Example #1
0
function xmldb_customlabel_upgrade($oldversion = 0)
{
    global $CFG, $THEME, $DB;
    $result = true;
    $dbman = $DB->get_manager();
    //===== 1.9.0 upgrade line ======//
    if ($result && $oldversion < 2012062401) {
        // Define field fallbacktype to be added to customlabel.
        $table = new xmldb_table('customlabel');
        $field = new xmldb_field('fallbacktype');
        $field->set_attributes(XMLDB_TYPE_CHAR, '32', null, null, null, null, 'labelclass');
        // Launch add field parent.
        $result = $result || $dbman->add_field($table, $field);
        // customlabel savepoint reached.
        upgrade_mod_savepoint($result, 2012062401, 'customlabel');
    }
    if ($result && $oldversion < 2013041802) {
        // Regenerates all contents to match template changes.
        $sql = "\n            SELECT DISTINCT\n                c.id,\n                c.shortname,\n                c.fullname,\n                c.idnumber,\n                c.summary,\n                c.category,\n                c.summaryformat\n            FROM\n                {course} c,\n                {course_modules} cm,\n                {modules} m\n            WHERE\n                c.id = cm.course AND\n                cm.module = m.id AND\n                m.name = 'customlabel'\n        ";
        $courses = $DB->get_records_sql($sql);
        if ($courses) {
            echo '<pre>';
            foreach ($courses as $c) {
                customlabel_course_preprocess_filepickers($c);
                customlabel_course_regenerate($c, 'all');
            }
            echo '</pre>';
        }
        upgrade_mod_savepoint($result, 2013041802, 'customlabel');
    }
    return $result;
}
function xmldb_hotquestion_upgrade($oldversion = 0)
{
    global $CFG, $DB;
    $result = true;
    //===== 1.9.0 upgrade line ======//
    if ($result && $oldversion < 2007040100) {
        /// Define field course to be added to hotquestion
        $table = new XMLDBTable('hotquestion');
        $field = new XMLDBField('course');
        $field->setAttributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null, null, '0', 'id');
        /// Launch add field course
        $result = $result && $table->add_field($field);
        /// Define field intro to be added to hotquestion
        $field = new xmldb_field('intro');
        $field->set_attributes(XMLDB_TYPE_TEXT, 'medium', null, null, null, null, null, null, 'name');
        /// Launch add field intro
        $result = $result && $table->add_field($field);
        /// Define field introformat to be added to hotquestion
        $field = new xmldb_field('introformat');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null, null, '0', 'intro');
        /// Launch add field introformat
        $result = $result && $table->add_field($field);
    }
    if ($result && $oldversion < 2007040101) {
        /// Define field timecreated to be added to hotquestion
        $table = new xmldb_table('hotquestion');
        $field = new xmldb_field('timecreated');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null, null, '0', 'introformat');
        /// Launch add field timecreated
        $result = $result && $table->add_field($field);
        $field = new xmldb_field('timemodified');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null, null, '0', 'timecreated');
        /// Launch add field timemodified
        $result = $result && $table->add_field($table, $field);
        /// Define index course (not unique) to be added to hotquestion
        $result = $result && $table->add_index('course', XMLDB_INDEX_NOTUNIQUE, array('course'));
    }
    if ($result && $oldversion < 2007040200) {
        /// Add some actions to get them properly displayed in the logs
        $rec = new stdClass();
        $rec->module = 'hotquestion';
        $rec->action = 'add';
        $rec->mtable = 'hotquestion';
        $rec->filed = 'name';
        /// Insert the add action in log_display
        $result = $DB->insert_record('log_display', $rec);
        /// Now the update action
        $rec->action = 'update';
        $result = $DB->insert_record('log_display', $rec);
        /// Now the view action
        $rec->action = 'view';
        $result = $DB->insert_record('log_display', $rec);
    }
    //===== 2.0 upgrade start here ======//
    return $result;
}
Example #3
0
function xmldb_local_lae_install()
{
    global $CFG, $DB;
    $dbman = $DB->get_manager();
    // Migrate the old config setting, if present.
    if (!empty($CFG->forum_anonymous)) {
        set_config('forum_enableanonymousposts', $CFG->forum_anonymous);
        set_config('forum_anonymous', null);
    }
    // Extend forum tables.
    $table = new xmldb_table('forum');
    $field = new xmldb_field('anonymous');
    $field->set_attributes(XMLDB_TYPE_INTEGER, '2', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'completionposts');
    if (!$dbman->field_exists($table, $field)) {
        $dbman->add_field($table, $field);
    }
    $table = new xmldb_table('forum_posts');
    $field = new xmldb_field('hiddenuserid');
    $field->set_attributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null, null, 'mailnow');
    if (!$dbman->field_exists($table, $field)) {
        $dbman->add_field($table, $field);
    }
    // Add anonymous user.
    if (empty($CFG->anonymous_userid)) {
        $anon_user = new stdClass();
        $anon_user->username = '******';
        // The password needs strings.
        $anon_user->password = hash_internal_user_password(str_shuffle($anon_user->username) . (string) mt_rand());
        $anon_user->auth = 'nologin';
        $anon_user->firstname = get_string('auser_firstname', 'local_lae');
        $anon_user->lastname = get_string('auser_lastname', 'local_lae');
        $anon_user->mnethostid = $CFG->mnet_localhost_id;
        $anon_user->email = get_string('auser_email', 'local_lae');
        if ($result = $DB->insert_record('user', $anon_user)) {
            set_config('anonymous_userid', $result);
            context_user::instance($result);
        } else {
            print_error("Failed to create anonymous user");
            return false;
        }
    }
    // Update course table to support display defaults
    $table = new xmldb_table('course');
    $field = new xmldb_field('filedisplaydefault', XMLDB_TYPE_INTEGER, '2', null, null, null, null, null);
    if (!$dbman->field_exists($table, $field)) {
        $dbman->add_field($table, $field);
    }
    return true;
}
function xmldb_groupselect_upgrade($oldversion = 0)
{
    global $CFG, $THEME, $DB;
    $result = true;
    $dbman = $DB->get_manager();
    if ($result && $oldversion < 2009020600) {
        /// Define field signuptype to be added to groupselect
        $table = new xmldb_table('groupselect');
        $field = new xmldb_field('signuptype');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, '0', 'intro');
        $dbman->add_field($table, $field);
        /// Define field timecreated to be added to groupselect
        $table = new xmldb_table('groupselect');
        $field = new xmldb_field('timecreated');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'timedue');
        $dbman->add_field($table, $field);
    }
    if ($result && $oldversion < 2009030500) {
        /// Define field targetgrouping to be added to groupselect
        $table = new xmldb_table('groupselect');
        $field = new xmldb_field('targetgrouping');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'intro');
        $dbman->add_field($table, $field);
    }
    if ($result && $oldversion < 2009061200) {
        $table = new xmldb_table('groupselect');
        $field = new xmldb_field('individual_limits');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '2', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $dbman->add_field($table, $field);
        $table = new xmldb_table('groupselect_limits');
        if ($result && !$dbman->table_exists($table)) {
            $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE);
            $table->add_field('groupselect', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL);
            $table->add_field('groupid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL);
            $table->add_field('lim', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL);
            $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
            $table->add_index('groupselect', XMLDB_INDEX_NOTUNIQUE, array('groupselect'));
            $dbman->create_table($table);
        }
    }
    // Define field introformat to be added to groupselect
    if ($result && $oldversion < 2010101300) {
        $table = new xmldb_table('groupselect');
        $field = new xmldb_field('introformat');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $dbman->add_field($table, $field);
    }
    return $result;
}
Example #5
0
function xmldb_block_poll_upgrade($oldversion)
{
    global $DB;
    $dbman = $DB->get_manager();
    // Add a new column for anonymous polls.
    if ($oldversion < 2011041400) {
        $table = new xmldb_table('block_poll');
        $field = new xmldb_field('anonymous');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '2', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'created');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
    }
    return true;
}
 /**
  * Invoke method, every class will have its own
  * returns true/false on completion, setting both
  * errormsg and output as necessary
  */
 function invoke()
 {
     parent::invoke();
     $result = true;
     // Set own core attributes
     $this->does_generate = ACTION_NONE;
     //$this->does_generate = ACTION_GENERATE_HTML;
     // These are always here
     global $CFG, $XMLDB;
     // Do the job, setting result as needed
     // Get the dir containing the file
     $dirpath = required_param('dir', PARAM_PATH);
     $dirpath = $CFG->dirroot . $dirpath;
     // Get the correct dirs
     if (!empty($XMLDB->dbdirs)) {
         $dbdir =& $XMLDB->dbdirs[$dirpath];
     } else {
         return false;
     }
     if (!empty($XMLDB->editeddirs)) {
         $editeddir =& $XMLDB->editeddirs[$dirpath];
         $structure =& $editeddir->xml_file->getStructure();
     }
     // If the changeme table exists, just get it and continue
     $changeme_exists = false;
     if ($tables =& $structure->getTables()) {
         if ($table =& $structure->getTable('changeme')) {
             $changeme_exists = true;
         }
     }
     if (!$changeme_exists) {
         // Lets create the table
         $field = new xmldb_field('id');
         $field->setType(XMLDB_TYPE_INTEGER);
         $field->setLength(10);
         $field->setNotNull(true);
         $field->setUnsigned(true);
         $field->setSequence(true);
         $field->setLoaded(true);
         $field->setChanged(true);
         $key = new xmldb_key('primary');
         $key->setType(XMLDB_KEY_PRIMARY);
         $key->setFields(array('id'));
         $key->setLoaded(true);
         $key->setChanged(true);
         $table = new xmldb_table('changeme');
         $table->setComment('Default comment for the table, please edit me');
         $table->addField($field);
         $table->addKey($key);
         // Finally, add the whole retrofitted table to the structure
         // in the place specified
         $structure->addTable($table);
     }
     // Launch postaction if exists (leave this here!)
     if ($this->getPostAction() && $result) {
         return $this->launch($this->getPostAction());
     }
     // Return ok if arrived here
     return $result;
 }
function xmldb_customlabel_upgrade($oldversion = 0)
{
    global $CFG, $THEME, $DB;
    $result = true;
    $dbman = $DB->get_manager();
    //===== 1.9.0 upgrade line ======//
    if ($result && $oldversion < 2012062401) {
        /// Define field fallbacktype to be added to customlabel
        $table = new xmldb_table('customlabel');
        $field = new xmldb_field('fallbacktype');
        $field->set_attributes(XMLDB_TYPE_CHAR, '32', null, null, null, null, 'labelclass');
        /// Launch add field parent
        $result = $result || $dbman->add_field($table, $field);
        /// customlabel savepoint reached
        upgrade_mod_savepoint($result, 2012062401, 'customlabel');
    }
    return $result;
}
/**
 * Upgrades for engagement
 *
 * @package    mod_engagement
 * @copyright  2012 NetSpot Pty Ltd
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
function xmldb_engagement_upgrade($oldversion)
{
    global $CFG, $DB;
    $dbman = $DB->get_manager();
    if ($oldversion < 2012061900) {
        if (!$dbman->table_exists('engagement_cache')) {
            $dbman->install_one_table_from_xmldb_file($CFG->dirroot . '/mod/engagement/db/install.xml', 'engagement_cache');
        }
        upgrade_mod_savepoint(true, 2012061900, 'engagement');
    }
    if ($oldversion < 2012080700) {
        $table = new xmldb_table('engagement_cache');
        $field = new xmldb_field('rawdata');
        $field->set_attributes(XMLDB_TYPE_TEXT, 'big', null, null, null, null, null);
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field, 'settings');
        }
        upgrade_mod_savepoint(true, 2012080700, 'engagement');
    }
    return true;
}
Example #9
0
function xmldb_conceptmap_upgrade($oldversion = 0)
{
    if ($oldversion < 20151231) {
        // Add new fields to certificate table.
        $table = new xmldb_table('concept-map');
        $field = new xmldb_field('showcode');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'savecert');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Add new fields to certificate_issues table.
        $table = new xmldb_table('certificate_issues');
        $field = new xmldb_field('code');
        $field->set_attributes(XMLDB_TYPE_CHAR, '50', null, null, null, null, 'certificateid');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Certificate savepoint reached.
        upgrade_mod_savepoint(true, 2012091800, 'certificate');
    }
}
Example #10
0
function xmldb_groupreg_upgrade($oldversion)
{
    global $CFG, $DB;
    $dbman = $DB->get_manager();
    // loads ddl manager and xmldb classes
    if ($oldversion < 2011100201) {
        $table = new xmldb_table('groupreg');
        $field = new xmldb_field('groupmembers');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '5', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '4', 'assigned');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
    }
    if ($oldversion < 2011112601) {
        // Adding DB field: boolean (int-1) "finalized", telling whether the students have already been put in their groups.
        $table = new xmldb_table('groupreg');
        $field = new xmldb_field('finalized');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'groupmembers');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
    }
    return true;
}
Example #11
0
/**
 * Mindmap plugin upgrade code
 *
 * @package    mod
 * @subpackage mindmap
 * @author ekpenso.com
 * @copyright  2011 Tõnis Tartes <*****@*****.**>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
function xmldb_mindmap_upgrade($oldversion = 0)
{
    global $CFG, $THEME, $DB;
    $dbman = $DB->get_manager();
    /// loads ddl manager and xmldb classes
    $result = true;
    if ($oldversion < 2012032300) {
        upgrade_mod_savepoint(true, 2012032300, 'mindmap');
    }
    if ($oldversion < 2012061300) {
        $table = new xmldb_table('mindmap');
        $field = new xmldb_field('editable', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'userid');
        $dbman->change_field_type($table, $field);
        upgrade_mod_savepoint(true, 2012061300, 'mindmap');
    }
    if ($oldversion < 2012070400) {
        upgrade_mod_savepoint(true, 2012070400, 'mindmap');
    }
    //Locking functionality
    if ($oldversion < 2013030100) {
        $table = new xmldb_table('mindmap');
        $field = new xmldb_field('locking');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '1', 'timemodified');
        $dbman->add_field($table, $field);
        $table = new xmldb_table('mindmap');
        $field = new xmldb_field('locked');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'locking');
        $dbman->add_field($table, $field);
        $table = new xmldb_table('mindmap');
        $field = new xmldb_field('lockedbyuser');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '12', null, XMLDB_NOTNULL, null, '0', 'locked');
        $dbman->add_field($table, $field);
        upgrade_mod_savepoint(true, 2013030100, 'mindmap');
    }
    return $result;
}
 /**
  * Returns the code (array of statements) needed to execute extra statements on table rename
  */
 public function getRenameTableExtraSQL($xmldb_table, $newname)
 {
     $results = array();
     $xmldb_field = new xmldb_field('id');
     // Fields having sequences should be exclusively, id.
     $oldseqname = $this->getSequenceFromDB($xmldb_table);
     $newseqname = $this->getNameForObject($newname, $xmldb_field->getName(), 'seq');
     /// Rename de sequence
     $results[] = 'RENAME ' . $oldseqname . ' TO ' . $newseqname;
     $oldtriggername = $this->getTriggerFromDB($xmldb_table);
     $newtriggername = $this->getNameForObject($newname, $xmldb_field->getName(), 'trg');
     /// Drop old trigger
     $results[] = "DROP TRIGGER " . $oldtriggername;
     $newt = new xmldb_table($newname);
     /// Temp table for trigger code generation
     /// Create new trigger
     $results = array_merge($results, $this->getCreateTriggerSQL($newt, $xmldb_field));
     /// Rename all the check constraints in the table
     $oldtablename = $this->getTableName($xmldb_table);
     $newtablename = $this->getTableName($newt);
     $oldconstraintprefix = $this->getNameForObject($xmldb_table->getName(), '');
     $newconstraintprefix = $this->getNameForObject($newt->getName(), '', '');
     if ($constraints = $this->getCheckConstraintsFromDB($xmldb_table)) {
         foreach ($constraints as $constraint) {
             /// Drop the old constraint
             $results[] = 'ALTER TABLE ' . $newtablename . ' DROP CONSTRAINT ' . $constraint->name;
         }
     }
     return $results;
 }
Example #13
0
 /**
  * Load data from XML to the table
  */
 function arr2xmldb_table($xmlarr)
 {
     global $CFG;
     $result = true;
     /// Debug the table
     /// traverse_xmlize($xmlarr);                   //Debug
     /// print_object ($GLOBALS['traverse_array']);  //Debug
     /// $GLOBALS['traverse_array']="";              //Debug
     /// Process table attributes (name, comment, previoustable and nexttable)
     if (isset($xmlarr['@']['NAME'])) {
         $this->name = trim($xmlarr['@']['NAME']);
     } else {
         $this->errormsg = 'Missing NAME attribute';
         $this->debug($this->errormsg);
         $result = false;
     }
     if (isset($xmlarr['@']['COMMENT'])) {
         $this->comment = trim($xmlarr['@']['COMMENT']);
     } else {
         if (!empty($CFG->xmldbdisablecommentchecking)) {
             $this->comment = '';
         } else {
             $this->errormsg = 'Missing COMMENT attribute';
             $this->debug($this->errormsg);
             $result = false;
         }
     }
     if (isset($xmlarr['@']['PREVIOUS'])) {
         $this->previous = trim($xmlarr['@']['PREVIOUS']);
     }
     if (isset($xmlarr['@']['NEXT'])) {
         $this->next = trim($xmlarr['@']['NEXT']);
     }
     /// Iterate over fields
     if (isset($xmlarr['#']['FIELDS']['0']['#']['FIELD'])) {
         foreach ($xmlarr['#']['FIELDS']['0']['#']['FIELD'] as $xmlfield) {
             if (!$result) {
                 //Skip on error
                 continue;
             }
             $name = trim($xmlfield['@']['NAME']);
             $field = new xmldb_field($name);
             $field->arr2xmldb_field($xmlfield);
             $this->fields[] = $field;
             if (!$field->isLoaded()) {
                 $this->errormsg = 'Problem loading field ' . $name;
                 $this->debug($this->errormsg);
                 $result = false;
             }
         }
     } else {
         $this->errormsg = 'Missing FIELDS section';
         $this->debug($this->errormsg);
         $result = false;
     }
     /// Perform some general checks over fields
     if ($result && $this->fields) {
         /// Check field names are ok (lowercase, a-z _-)
         if (!$this->checkNameValues($this->fields)) {
             $this->errormsg = 'Some FIELDS name values are incorrect';
             $this->debug($this->errormsg);
             $result = false;
         }
         /// Check previous & next are ok (duplicates and existing fields)
         $this->fixPrevNext($this->fields);
         if ($result && !$this->checkPreviousNextValues($this->fields)) {
             $this->errormsg = 'Some FIELDS previous/next values are incorrect';
             $this->debug($this->errormsg);
             $result = false;
         }
         /// Order fields
         if ($result && !$this->orderFields($this->fields)) {
             $this->errormsg = 'Error ordering the fields';
             $this->debug($this->errormsg);
             $result = false;
         }
     }
     /// Iterate over keys
     if (isset($xmlarr['#']['KEYS']['0']['#']['KEY'])) {
         foreach ($xmlarr['#']['KEYS']['0']['#']['KEY'] as $xmlkey) {
             if (!$result) {
                 //Skip on error
                 continue;
             }
             $name = trim($xmlkey['@']['NAME']);
             $key = new xmldb_key($name);
             $key->arr2xmldb_key($xmlkey);
             $this->keys[] = $key;
             if (!$key->isLoaded()) {
                 $this->errormsg = 'Problem loading key ' . $name;
                 $this->debug($this->errormsg);
                 $result = false;
             }
         }
     } else {
         $this->errormsg = 'Missing KEYS section (at least one PK must exist)';
         $this->debug($this->errormsg);
         $result = false;
     }
     /// Perform some general checks over keys
     if ($result && $this->keys) {
         /// Check keys names are ok (lowercase, a-z _-)
         if (!$this->checkNameValues($this->keys)) {
             $this->errormsg = 'Some KEYS name values are incorrect';
             $this->debug($this->errormsg);
             $result = false;
         }
         /// Check previous & next are ok (duplicates and existing keys)
         $this->fixPrevNext($this->keys);
         if ($result && !$this->checkPreviousNextValues($this->keys)) {
             $this->errormsg = 'Some KEYS previous/next values are incorrect';
             $this->debug($this->errormsg);
             $result = false;
         }
         /// Order keys
         if ($result && !$this->orderKeys($this->keys)) {
             $this->errormsg = 'Error ordering the keys';
             $this->debug($this->errormsg);
             $result = false;
         }
         /// TODO: Only one PK
         /// TODO: Not keys with repeated fields
         /// TODO: Check fields and reffieds exist in table
     }
     /// Iterate over indexes
     if (isset($xmlarr['#']['INDEXES']['0']['#']['INDEX'])) {
         foreach ($xmlarr['#']['INDEXES']['0']['#']['INDEX'] as $xmlindex) {
             if (!$result) {
                 //Skip on error
                 continue;
             }
             $name = trim($xmlindex['@']['NAME']);
             $index = new xmldb_index($name);
             $index->arr2xmldb_index($xmlindex);
             $this->indexes[] = $index;
             if (!$index->isLoaded()) {
                 $this->errormsg = 'Problem loading index ' . $name;
                 $this->debug($this->errormsg);
                 $result = false;
             }
         }
     }
     /// Perform some general checks over indexes
     if ($result && $this->indexes) {
         /// Check field names are ok (lowercase, a-z _-)
         if (!$this->checkNameValues($this->indexes)) {
             $this->errormsg = 'Some INDEXES name values are incorrect';
             $this->debug($this->errormsg);
             $result = false;
         }
         /// Check previous & next are ok (duplicates and existing INDEXES)
         $this->fixPrevNext($this->indexes);
         if ($result && !$this->checkPreviousNextValues($this->indexes)) {
             $this->errormsg = 'Some INDEXES previous/next values are incorrect';
             $this->debug($this->errormsg);
             $result = false;
         }
         /// Order indexes
         if ($result && !$this->orderIndexes($this->indexes)) {
             $this->errormsg = 'Error ordering the indexes';
             $this->debug($this->errormsg);
             $result = false;
         }
         /// TODO: Not indexes with repeated fields
         /// TODO: Check fields exist in table
     }
     /// Set some attributes
     if ($result) {
         $this->loaded = true;
     }
     $this->calculateHash();
     return $result;
 }
function xmldb_offlinequiz_upgrade($oldversion = 0)
{
    global $CFG, $THEME, $DB, $OUTPUT;
    $dbman = $DB->get_manager();
    // And upgrade begins here. For each one, you'll need one
    // Block of code similar to the next one. Please, delete
    // This comment lines once this file start handling proper
    // Upgrade code.
    // ONLY UPGRADE FROM Moodle 1.9.x (module version 2009042100) is supported.
    if ($oldversion < 2009120700) {
        // Define field counter to be added to offlinequiz_i_log.
        $table = new xmldb_table('offlinequiz_i_log');
        $field = new xmldb_field('counter');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'rawdata');
        // Launch add field counter.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Define field corners to be added to offlinequiz_i_log.
        $field = new xmldb_field('corners');
        $field->set_attributes(XMLDB_TYPE_CHAR, '50', null, null, null, null, 'counter');
        // Launch add field corners.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Define field pdfintro to be added to offlinequiz.
        $table = new xmldb_table('offlinequiz');
        $field = new xmldb_field('pdfintro');
        $field->set_attributes(XMLDB_TYPE_TEXT, 'small', null, null, null, null, 'intro');
        // Launch add field pdfintro.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2009120700, 'offlinequiz');
    }
    if ($oldversion < 2010082900) {
        // Define table offlinequiz_p_list to be created.
        $table = new xmldb_table('offlinequiz_p_list');
        // Adding fields to table offlinequiz_p_list.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('offlinequiz', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('name', XMLDB_TYPE_CHAR, '255', null, null, null, null, null, null);
        $table->add_field('list', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '1');
        // Adding keys to table offlinequiz_p_list.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Launch create table for offlinequiz_p_list.
        $dbman->create_table($table);
        // Define field position to be dropped from offlinequiz_participants.
        $table = new xmldb_table('offlinequiz_participants');
        $field = new xmldb_field('position');
        // Launch drop field position.
        $dbman->drop_field($table, $field);
        // Define field page to be dropped from offlinequiz_participants.
        $table = new xmldb_table('offlinequiz_participants');
        $field = new xmldb_field('page');
        // Launch drop field page.
        $dbman->drop_field($table, $field);
        // Define field list to be added to offlinequiz_participants.
        $table = new xmldb_table('offlinequiz_participants');
        $field = new xmldb_field('list');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '1', 'userid');
        // Launch add field list.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2010082900, 'offlinequiz');
    }
    if ($oldversion < 2010090600) {
        // Define index offlinequiz (not unique) to be added to offlinequiz_p_list.
        $table = new xmldb_table('offlinequiz_p_list');
        $index = new XMLDBIndex('offlinequiz');
        $index->set_attributes(XMLDB_INDEX_NOTUNIQUE, array('offlinequiz'));
        // Launch add index offlinequiz.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        $index = new XMLDBIndex('list');
        $index->set_attributes(XMLDB_INDEX_NOTUNIQUE, array('list'));
        // Launch add index list.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Define index offlinequiz (not unique) to be added to offlinequiz_participants.
        $table = new xmldb_table('offlinequiz_participants');
        $index = new XMLDBIndex('offlinequiz');
        $index->set_attributes(XMLDB_INDEX_NOTUNIQUE, array('offlinequiz'));
        // Launch add index offlinequiz.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        $index = new XMLDBIndex('list');
        $index->set_attributes(XMLDB_INDEX_NOTUNIQUE, array('list'));
        // Launch add index list.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        $index = new XMLDBIndex('userid');
        $index->set_attributes(XMLDB_INDEX_NOTUNIQUE, array('userid'));
        // Launch add index list.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2010090600, 'offlinequiz');
    }
    if ($oldversion < 2011021400) {
        // Define field fileformat to be added to offlinequiz.
        $table = new xmldb_table('offlinequiz');
        $field = new xmldb_field('fileformat');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'timemodified');
        // Launch add field fileformat.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2011021400, 'offlinequiz');
    }
    if ($oldversion < 2011032900) {
        // Define field page to be added to offlinequiz_i_log.
        $table = new xmldb_table('offlinequiz_i_log');
        $field = new xmldb_field('page');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'corners');
        // Launch add field page.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Define field username to be added to offlinequiz_i_log.
        $field = new xmldb_field('username');
        $field->set_attributes(XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null, 'page');
        // Launch add field username.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Define index username (not unique) to be added to offlinequiz_i_log.
        $index = new XMLDBIndex('username');
        $index->set_attributes(XMLDB_INDEX_NOTUNIQUE, array('username'));
        // Launch add index username.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Define field showgrades to be added to offlinequiz.
        $table = new xmldb_table('offlinequiz');
        $field = new xmldb_field('showgrades');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'fileformat');
        // Launch add field showgrades.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2011032900, 'offlinequiz');
    }
    if ($oldversion < 2011081700) {
        // Define field showtutorial to be added to offlinequiz.
        $table = new xmldb_table('offlinequiz');
        $field = new xmldb_field('showtutorial');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'showgrades');
        // Launch add field showtutorial.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2011081700, 'offlinequiz');
    }
    // ------------------------------------------------------
    // UPGRADE for Moodle 2.0 module starts here.
    // ------------------------------------------------------
    // First we do the changes to the main table 'offlinequiz'.
    // ------------------------------------------------------
    if ($oldversion < 2012010100) {
        // Define field docscreated to be added to offlinequiz.
        $table = new xmldb_table('offlinequiz');
        $field = new xmldb_field('docscreated', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'questionsperpage');
        // Conditionally launch add field docscreated.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012010100, 'offlinequiz');
    }
    // Fill the new field docscreated.
    if ($oldversion < 2012010101) {
        $offlinequizzes = $DB->get_records('offlinequiz');
        foreach ($offlinequizzes as $offlinequiz) {
            $dirname = $CFG->dataroot . '/' . $offlinequiz->course . '/moddata/offlinequiz/' . $offlinequiz->id . '/pdfs';
            // If the answer pdf file for group 1 exists then we have created the documents.
            if (file_exists($dirname . '/answer-a.pdf')) {
                $DB->set_field('offlinequiz', 'docscreated', 1, array('id' => $offlinequiz->id));
            }
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012010101, 'offlinequiz');
    }
    if ($oldversion < 2012010105) {
        // Define table offlinequiz_reports to be created.
        $table = new xmldb_table('offlinequiz_reports');
        // Adding fields to table offlinequiz_reports.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('name', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        $table->add_field('displayorder', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('lastcron', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('cron', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('capability', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        // Adding keys to table offlinequiz_reports.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table offlinequiz_reports.
        // $table->add_index('name', XMLDB_INDEX_UNIQUE, array('name'));.
        // Conditionally launch create table for offlinequiz_reports.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        if (!$DB->get_records_sql("SELECT * FROM {offlinequiz_reports} WHERE name = 'overview'", array())) {
            $record = new stdClass();
            $record->name = 'overview';
            $record->displayorder = '10000';
            $DB->insert_record('offlinequiz_reports', $record);
        }
        if (!$DB->get_records_sql("SELECT * FROM {offlinequiz_reports} WHERE name = 'rimport'", array())) {
            $record = new stdClass();
            $record->name = 'rimport';
            $record->displayorder = '9000';
            $DB->insert_record('offlinequiz_reports', $record);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012010105, 'offlinequiz');
    }
    // Now we create all the new tables.
    // Create table offlinequiz_groups.
    if ($oldversion < 2012010200) {
        echo $OUTPUT->notification('Creating new tables', 'notifysuccess');
        // Define table offlinequiz_groups to be created.
        $table = new xmldb_table('offlinequiz_groups');
        // Adding fields to table offlinequiz_groups.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('offlinequizid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('number', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('sumgrades', XMLDB_TYPE_NUMBER, '10, 5', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('numberofpages', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('templateusageid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        // Adding keys to table offlinequiz_groups.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table offlinequiz_groups.
        $table->add_index('offlinequizid', XMLDB_INDEX_NOTUNIQUE, array('offlinequizid'));
        // Conditionally launch create table for offlinequiz_groups.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012010200, 'offlinequiz');
    }
    // Create table offlinequiz_group_questions.
    if ($oldversion < 2012010300) {
        // Define table offlinequiz_group_questions to be created.
        $table = new xmldb_table('offlinequiz_group_questions');
        // Adding fields to table offlinequiz_group_questions.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('offlinequizid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('offlinegroupid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('questionid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('position', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '1');
        $table->add_field('pagenumber', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('usageslot', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, null, null, null);
        // Adding keys to table offlinequiz_group_questions.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table offlinequiz_group_questions.
        $table->add_index('offlinequiz', XMLDB_INDEX_NOTUNIQUE, array('offlinequizid'));
        // Conditionally launch create table for offlinequiz_group_questions.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012010300, 'offlinequiz');
    }
    if ($oldversion < 2012010400) {
        // Define table offlinequiz_scanned_pages to be created.
        $table = new xmldb_table('offlinequiz_scanned_pages');
        // Adding fields to table offlinequiz_scanned_pages.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('offlinequizid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('resultid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('filename', XMLDB_TYPE_CHAR, '1000', null, null, null, null);
        $table->add_field('warningfilename', XMLDB_TYPE_CHAR, '1000', null, null, null, null);
        $table->add_field('groupnumber', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('userkey', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        $table->add_field('pagenumber', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('time', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('status', XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, null);
        $table->add_field('error', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        $table->add_field('info', XMLDB_TYPE_TEXT, 'medium', null, null, null, null);
        // Adding keys to table offlinequiz_scanned_pages.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table offlinequiz_scanned_pages.
        $table->add_index('offlinequizid', XMLDB_INDEX_NOTUNIQUE, array('offlinequizid'));
        // Conditionally launch create table for offlinequiz_scanned_pages.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012010400, 'offlinequiz');
    }
    if ($oldversion < 2012010500) {
        // Define table offlinequiz_choices to be created.
        $table = new xmldb_table('offlinequiz_choices');
        // Adding fields to table offlinequiz_choices.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('scannedpageid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('slotnumber', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('choicenumber', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('value', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table offlinequiz_choices.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table offlinequiz_choices.
        $table->add_index('scannedpageid', XMLDB_INDEX_NOTUNIQUE, array('scannedpageid'));
        // Conditionally launch create table for offlinequiz_choices.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012010500, 'offlinequiz');
    }
    if ($oldversion < 2012010600) {
        // Define table offlinequiz_page_corners to be created.
        $table = new xmldb_table('offlinequiz_page_corners');
        // Adding fields to table offlinequiz_page_corners.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('scannedpageid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('x', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('y', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('position', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        // Adding keys to table offlinequiz_page_corners.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Conditionally launch create table for offlinequiz_page_corners.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012010600, 'offlinequiz');
    }
    if ($oldversion < 2012010700) {
        // Define table offlinequiz_results to be created.
        $table = new xmldb_table('offlinequiz_results');
        // Adding fields to table offlinequiz_results.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('offlinequizid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('offlinegroupid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('sumgrades', XMLDB_TYPE_NUMBER, '10, 5', null, null, null, null);
        $table->add_field('usageid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('teacherid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('attendant', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('status', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timestart', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('timefinish', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, '0');
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('preview', XMLDB_TYPE_INTEGER, '3', XMLDB_UNSIGNED, null, null, '0');
        // Adding keys to table offlinequiz_results.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Conditionally launch create table for offlinequiz_results.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012010700, 'offlinequiz');
    }
    if ($oldversion < 2012010800) {
        // Define table offlinequiz_scanned_p_pages to be created.
        $table = new xmldb_table('offlinequiz_scanned_p_pages');
        // Adding fields to table offlinequiz_scanned_p_pages.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('offlinequizid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('listnumber', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('filename', XMLDB_TYPE_CHAR, '1000', null, null, null, null);
        $table->add_field('time', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('status', XMLDB_TYPE_TEXT, 'small', null, XMLDB_NOTNULL, null);
        $table->add_field('error', XMLDB_TYPE_TEXT, 'small', null, null, null, null);
        // Adding keys to table offlinequiz_scanned_p_pages.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Conditionally launch create table for offlinequiz_scanned_p_pages.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012010800, 'offlinequiz');
    }
    if ($oldversion < 2012010900) {
        // Define table offlinequiz_p_choices to be created.
        $table = new xmldb_table('offlinequiz_p_choices');
        // Adding fields to table offlinequiz_p_choices.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('scannedppageid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('value', XMLDB_TYPE_INTEGER, '4', null, XMLDB_NOTNULL, null, '0');
        // Adding keys to table offlinequiz_p_choices.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Conditionally launch create table for offlinequiz_p_choices.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012010900, 'offlinequiz');
    }
    if ($oldversion < 2012011000) {
        // Define table offlinequiz_p_lists to be created.
        $table = new xmldb_table('offlinequiz_p_lists');
        // Adding fields to table offlinequiz_p_lists.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('offlinequizid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('name', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        $table->add_field('number', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '1');
        $table->add_field('filename', XMLDB_TYPE_CHAR, '1000', null, null, null, null);
        // Adding keys to table offlinequiz_p_lists.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table offlinequiz_p_lists.
        $table->add_index('offlinequizid', XMLDB_INDEX_NOTUNIQUE, array('offlinequizid'));
        // Conditionally launch create table for offlinequiz_p_lists.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012011000, 'offlinequiz');
    }
    // ------------------------------------------------------
    // New we rename fields in old tables.
    // ------------------------------------------------------
    // Rename fields in offlinequiz_queue table.
    if ($oldversion < 2012020100) {
        echo $OUTPUT->notification('Renaming fields in old tables.', 'notifysuccess');
        // Rename field offlinequiz on table offlinequiz_queue to NEWNAMEGOESHERE.
        $table = new xmldb_table('offlinequiz_queue');
        $field = new xmldb_field('offlinequiz');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null, null, '0', 'timefinish');
        // Launch rename field offlinequiz.
        $dbman->rename_field($table, $field, 'offlinequizid');
        $field = new xmldb_field('importadmin');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null, null, '0', 'id');
        // Launch rename field importadmin.
        $dbman->rename_field($table, $field, 'importuserid');
        // New status field.
        $field = new xmldb_field('status', XMLDB_TYPE_TEXT, 'small', null, null, null, 'processed', 'timefinish');
        // Conditionally launch add field status.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012020100, 'offlinequiz');
    }
    // Add and rename fields in table offlinquiz_queue_data.
    if ($oldversion < 2012020200) {
        // Define field status to be added to offlinequiz_queue_data.
        $table = new xmldb_table('offlinequiz_queue_data');
        $field = new xmldb_field('status', XMLDB_TYPE_TEXT, 'small', null, XMLDB_NOTNULL, null, 'ok', 'filename');
        // Conditionally launch add field status.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        } else {
            $dbman->change_field_type($table, $field);
            $dbman->change_field_precision($table, $field);
            $dbman->change_field_notnull($table, $field);
            $dbman->change_field_unsigned($table, $field);
        }
        // Add new field 'error'.
        $field = new xmldb_field('error', XMLDB_TYPE_TEXT, 'small', null, null, null, null, 'status');
        // Conditionally launch add field error.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Rename field queue to queueid.
        $field = new xmldb_field('queue', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'id');
        // Launch rename field queueid.
        $dbman->rename_field($table, $field, 'queueid');
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012020200, 'offlinequiz');
    }
    // Rename field list on table offlinequiz_participants to listid.
    if ($oldversion < 2012020300) {
        // Rename field list on table offlinequiz_participants to listid.
        $table = new xmldb_table('offlinequiz_participants');
        $field = new xmldb_field('list', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'id');
        // Launch rename field listid.
        $dbman->rename_field($table, $field, 'listid');
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012020300, 'offlinequiz');
    }
    // Migrate the old lists of participants to the new table offlinequiz_p_lists (with 's').
    if ($oldversion < 2012020400) {
        $oldplists = $DB->get_records('offlinequiz_p_list');
        foreach ($oldplists as $oldplist) {
            $newplist = new StdClass();
            $newplist->offlinequizid = $oldplist->offlinequiz;
            $newplist->name = $oldplist->name;
            $newplist->number = $oldplist->list;
            // NOTE.
            // We don't set filename because we can always recreate the PDF files if needed.
            $newplist->id = $DB->insert_record('offlinequiz_p_lists', $newplist);
            // Get all the participants linked to the old list and link them to the new list in offlinequiz_p_lists.
            if ($oldparts = $DB->get_records('offlinequiz_participants', array('listid' => $oldplist->id))) {
                foreach ($oldparts as $oldpart) {
                    $oldpart->listid = $newplist->id;
                    $DB->update_record('offlinequiz_participants', $oldpart);
                }
            }
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012020400, 'offlinequiz');
    }
    // Check if there are inconsistencies in the DB, i.e. uniqueids used by both quizzes and offlinequizzes.
    if ($oldversion < 2012020410) {
        $sql = 'SELECT uniqueid
        FROM {offlinequiz_attempts} qa WHERE
        EXISTS (SELECT id from {quiz_attempts} where uniqueid = qa.uniqueid)';
        $doubleids = $DB->get_fieldset_sql($sql, array());
        // For each double uniqueid create a new uniqueid and change the fields in the tables.
        // Offlinequiz_attempts, question_sessions and question_states.
        echo $OUTPUT->notification('Fixing ' . count($doubleids) . ' question attempt uniqueids that are not unique', 'notifysuccess');
        foreach ($doubleids as $doubleid) {
            echo $doubleid . ', ';
            if ($usage = $DB->get_record('question_usages', array('id' => $doubleid))) {
                $transaction = $DB->start_delegated_transaction();
                unset($usage->id);
                $usage->id = $DB->insert_record('question_usages', $usage);
                $DB->set_field_select('offlinequiz_attempts', 'uniqueid', $usage->id, 'uniqueid = :oldid', array('oldid' => $doubleid));
                $DB->set_field_select('question_states', 'attempt', $usage->id, 'attempt = :oldid', array('oldid' => $doubleid));
                $DB->set_field_select('question_sessions', 'attemptid', $usage->id, 'attemptid = :oldid', array('oldid' => $doubleid));
                $transaction->allow_commit();
            }
        }
        upgrade_mod_savepoint(true, 2012020410, 'offlinequiz');
    }
    // -----------------------------------------------------
    //  Update the contextid field in question_usages (compare lib/db/upgrade.php lines 6108 following).
    // -----------------------------------------------------
    if ($oldversion < 2012020500) {
        echo $OUTPUT->notification('Fixing question usages context ID', 'notifysuccess');
        // Update the component field if necessary.
        $DB->set_field('question_usages', 'component', 'mod_offlinequiz', array('component' => 'offlinequiz'));
        // Populate the contextid field.
        $offlinequizmoduleid = $DB->get_field('modules', 'id', array('name' => 'offlinequiz'));
        $DB->execute("\n                UPDATE {question_usages} SET contextid = (\n                SELECT ctx.id\n                FROM {context} ctx\n                JOIN {course_modules} cm ON cm.id = ctx.instanceid AND cm.module = {$offlinequizmoduleid}\n                JOIN {offlinequiz_attempts} quiza ON quiza.offlinequiz = cm.instance\n                WHERE ctx.contextlevel = " . CONTEXT_MODULE . "\n                AND quiza.uniqueid = {question_usages}.id)\n                WHERE (\n                SELECT ctx.id\n                FROM {context} ctx\n                JOIN {course_modules} cm ON cm.id = ctx.instanceid AND cm.module = {$offlinequizmoduleid}\n                JOIN {offlinequiz_attempts} quiza ON quiza.offlinequiz = cm.instance\n                WHERE ctx.contextlevel = " . CONTEXT_MODULE . "\n                AND quiza.uniqueid = {question_usages}.id) IS NOT NULL\n                ");
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012020500, 'offlinequiz');
    }
    // -----------------------------------------------------
    //  Now we migrate data from the old to the new tables.
    // -----------------------------------------------------
    // We have to delete redundant question instances from offlinequizzes because they are incompatible with the new code.
    if ($oldversion < 2012030100) {
        echo $OUTPUT->notification('Migrating old offline quizzes to new offline quizzes..', 'notifysuccess');
        require_once $CFG->dirroot . '/mod/offlinequiz/db/upgradelib.php';
        offlinequiz_remove_redundant_q_instances();
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012030100, 'offlinequiz');
    }
    // Migrate all entries in the offlinequiz_group table to the new tables offlinequiz_groups  and offlinequiz_group_questions.
    if ($oldversion < 2012030101) {
        echo $OUTPUT->notification('Creating new offlinequiz groups', 'notifysuccess');
        $offlinequizzes = $DB->get_records('offlinequiz');
        $counter = 0;
        foreach ($offlinequizzes as $offlinequiz) {
            if (!$DB->get_records('offlinequiz_groups', array('offlinequizid' => $offlinequiz->id))) {
                echo '.';
                $counter++;
                flush();
                ob_flush();
                if ($counter % 100 == 0) {
                    echo "<br/>\n";
                    echo $counter;
                }
                $transaction = $DB->start_delegated_transaction();
                $oldgroups = $DB->get_records('offlinequiz_group', array('offlinequiz' => $offlinequiz->id), 'groupid ASC');
                $newgroups = array();
                foreach ($oldgroups as $oldgroup) {
                    $newgroup = new StdClass();
                    $newgroup->offlinequizid = $offlinequiz->id;
                    $newgroup->number = $oldgroup->groupid;
                    $newgroup->sumgrades = $oldgroup->sumgrades;
                    $newgroup->timecreated = time();
                    $newgroup->timemodified = time();
                    // First we need the ID of the new group.
                    if (!($oldid = $DB->get_field('offlinequiz_groups', 'id', array('offlinequizid' => $offlinequiz->id, 'number' => $newgroup->number)))) {
                        $newgroup->id = $DB->insert_record('offlinequiz_groups', $newgroup);
                    } else {
                        $newgroup->id = $oldid;
                    }
                    // Now create an entry in offlinquiz_group_questions for each question in the old group layout.
                    $questions = explode(',', $oldgroup->questions);
                    $position = 1;
                    foreach ($questions as $question) {
                        $groupquestion = new StdClass();
                        $groupquestion->offlinequizid = $offlinequiz->id;
                        $groupquestion->offlinegroupid = $newgroup->id;
                        $groupquestion->questionid = $question;
                        $groupquestion->position = $position++;
                        if (!$DB->get_record('offlinequiz_group_questions', array('offlinequizid' => $offlinequiz->id, 'offlinegroupid' => $newgroup->id, 'questionid' => $question))) {
                            $DB->insert_record('offlinequiz_group_questions', $groupquestion);
                        }
                    }
                    $newgroups[] = $newgroup;
                }
                require_once $CFG->dirroot . '/mod/offlinequiz/evallib.php';
                list($maxquestions, $maxanswers, $formtype, $questionsperpage) = offlinequiz_get_question_numbers($offlinequiz, $newgroups);
                foreach ($newgroups as $newgroup) {
                    // Now we know the number of pages of the group.
                    $newgroup->numberofpages = ceil($maxquestions / ($formtype * 24));
                    $DB->update_record('offlinequiz_groups', $newgroup);
                }
                $transaction->allow_commit();
            }
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012030101, 'offlinequiz');
    }
    // Migrate all entries in the offlinequiz_i_log table to the new tables offlinequiz_scanned_pages, offlinequiz_choices and.
    // Offlinequiz_page_corners. Also migrate the files to the new filesystem.
    // First we mark all offlinequizzes s.t. we upgrade them only once. Many things can go wrong here..
    if ($oldversion < 2012030200) {
        // Define field needsilogupgrade to be added to offlinequiz_attempts.
        $table = new xmldb_table('offlinequiz');
        $field = new xmldb_field('needsilogupgrade', XMLDB_TYPE_INTEGER, '3', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'timeopen');
        // Launch add field needsilogupgrade.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $DB->set_field('offlinequiz', 'needsilogupgrade', 1);
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012030200, 'offlinequiz');
    }
    // Then we mark all offlinequiz_attempts to be upgraded.
    if ($oldversion < 2012030300) {
        // Define field needsupgradetonewqe to be added to offlinequiz_attempts.
        $table = new xmldb_table('offlinequiz_attempts');
        $field = new xmldb_field('needsupgradetonewqe', XMLDB_TYPE_INTEGER, '3', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'sheet');
        // Launch add field needsupgradetonewqe.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $DB->set_field('offlinequiz_attempts', 'needsupgradetonewqe', 1);
        // Quiz savepoint reached.
        upgrade_mod_savepoint(true, 2012030300, 'offlinequiz');
    }
    // In a first step we upgrade the offlinequiz_attempts exactly like quiz_attempts (see mod/quiz/db/upgrade.php).
    if ($oldversion < 2012030400) {
        $table = new xmldb_table('question_states');
        // Echo "upgrading attempts to new question engine <br/>\n";.
        if ($dbman->table_exists($table)) {
            // NOTE: We need all attemps, also the ones with sheet=1 because the are the groups' template attempts.
            // Now update all the old attempt data.
            $oldrcachesetting = $CFG->rcache;
            $CFG->rcache = false;
            require_once $CFG->dirroot . '/mod/offlinequiz/db/upgradelib.php';
            $upgrader = new offlinequiz_attempt_upgrader();
            $upgrader->convert_all_quiz_attempts();
            $CFG->rcache = $oldrcachesetting;
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012030400, 'offlinequiz');
    }
    // Then we mark all offlinequiz_attempts to be upgraded.
    if ($oldversion < 2012030500) {
        // Define field resultid to be added to offlinequiz_attempts for later reference.
        set_time_limit(3000);
        $table = new xmldb_table('offlinequiz_attempts');
        $field = new xmldb_field('resultid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        // Launch add field resultid.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Quiz savepoint reached.
        upgrade_mod_savepoint(true, 2012030500, 'offlinequiz');
    }
    // In a second step we convert all offlinequiz_attempts into offlinequiz_results and also upgrade the ilog table.
    if ($oldversion < 2012060101) {
        require_once $CFG->dirroot . '/mod/offlinequiz/db/upgradelib.php';
        $oldrcachesetting = $CFG->rcache;
        $CFG->rcache = false;
        $upgrader = new offlinequiz_ilog_upgrader();
        $upgrader->convert_all_offlinequiz_attempts();
        $CFG->rcache = $oldrcachesetting;
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012060101, 'offlinequiz');
    }
    if ($oldversion < 2012060105) {
        // Changing type of field grade on table offlinequiz_q_instances to number.
        $table = new xmldb_table('offlinequiz_q_instances');
        $field = new xmldb_field('grade', XMLDB_TYPE_NUMBER, '12, 7', null, XMLDB_NOTNULL, null, '0', 'question');
        // Launch change of type for field grade.
        $dbman->change_field_type($table, $field);
        // Launch change of precision for field grade.
        $dbman->change_field_precision($table, $field);
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012060105, 'offlinequiz');
    }
    if ($oldversion < 2012121200) {
        // Define field introformat to be added to offlinequiz.
        $table = new xmldb_table('offlinequiz');
        $field = new xmldb_field('introformat', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'intro');
        // Conditionally launch add field introformat.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2012121200, 'offlinequiz');
    }
    if ($oldversion < 2013012400) {
        // Define field info to be added to offlinequiz_queue.
        $table = new xmldb_table('offlinequiz_queue');
        $field = new xmldb_field('info', XMLDB_TYPE_TEXT, 'medium', null, null, null, null, 'status');
        // Conditionally launch add field info.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2013012400, 'offlinequiz');
    }
    if ($oldversion < 2013012410) {
        // Define field info to be added to offlinequiz_queue_data.
        $table = new xmldb_table('offlinequiz_queue_data');
        $field = new xmldb_field('info', XMLDB_TYPE_TEXT, 'medium', null, null, null, null, 'error');
        // Conditionally launch add field info.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2013012410, 'offlinequiz');
    }
    if ($oldversion < 2013012500) {
        // Changing type of field grade on table offlinequiz to int.
        $table = new xmldb_table('offlinequiz');
        $field = new xmldb_field('grade', XMLDB_TYPE_NUMBER, '10, 5', null, XMLDB_NOTNULL, null, '0', 'time');
        // Launch change for field grade.
        $dbman->change_field_type($table, $field);
        $dbman->change_field_precision($table, $field);
        $dbman->change_field_unsigned($table, $field);
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2013012500, 'offlinequiz');
    }
    if ($oldversion < 2013041600) {
        // Rename field question on table offlinequiz_q_instances to questionid.
        $table = new xmldb_table('offlinequiz_q_instances');
        $field = new xmldb_field('question', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'offlinequiz');
        // Launch rename field question.
        $dbman->rename_field($table, $field, 'questionid');
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2013041600, 'offlinequiz');
    }
    if ($oldversion < 2013041601) {
        // Rename field offlinequiz on table offlinequiz_q_instances to offlinequizid.
        $table = new xmldb_table('offlinequiz_q_instances');
        $field = new xmldb_field('offlinequiz', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'id');
        // Launch rename field offlinequiz.
        $dbman->rename_field($table, $field, 'offlinequizid');
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2013041601, 'offlinequiz');
    }
    if ($oldversion < 2013061300) {
        // Define table offlinequiz_hotspots to be created.
        $table = new xmldb_table('offlinequiz_hotspots');
        // Adding fields to table offlinequiz_hotspots.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('scannedpageid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('name', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('x', XMLDB_TYPE_NUMBER, '10, 2', null, XMLDB_NOTNULL, null, null);
        $table->add_field('y', XMLDB_TYPE_NUMBER, '10, 2', null, XMLDB_NOTNULL, null, null);
        $table->add_field('blank', XMLDB_TYPE_INTEGER, '1', null, null, null, null);
        $table->add_field('time', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');
        // Adding keys to table offlinequiz_hotspots.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table offlinequiz_hotspots.
        $table->add_index('scannedpageididx', XMLDB_INDEX_NOTUNIQUE, array('scannedpageid'));
        // Conditionally launch create table for offlinequiz_hotspots.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2013061300, 'offlinequiz');
    }
    if ($oldversion < 2013110800) {
        // Define field timecreated to be added to offlinequiz_queue.
        $table = new xmldb_table('offlinequiz_queue');
        $field = new xmldb_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'importuserid');
        // Conditionally launch add field timecreated.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2013110800, 'offlinequiz');
    }
    if ($oldversion < 2013112500) {
        // Define index offlinequiz_userid_idx (not unique) to be added to offlinequiz_results.
        $table = new xmldb_table('offlinequiz_results');
        $index = new xmldb_index('offlinequiz_userid_idx', XMLDB_INDEX_NOTUNIQUE, array('userid'));
        // Conditionally launch add index offlinequiz_userid_idx.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2013112500, 'offlinequiz');
    }
    // Moodle v2.8.5+ release upgrade line.
    // Put any upgrade step following this.
    if ($oldversion < 2015060500) {
        // Rename field page on table offlinequiz_group_questions to NEWNAMEGOESHERE.
        $table = new xmldb_table('offlinequiz_group_questions');
        $field = new xmldb_field('pagenumber', XMLDB_TYPE_INTEGER, '4', null, null, null, null, 'position');
        // Launch rename field page.
        $dbman->rename_field($table, $field, 'page');
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2015060500, 'offlinequiz');
    }
    if ($oldversion < 2015060501) {
        // Rename field page on table offlinequiz_group_questions to NEWNAMEGOESHERE.
        $table = new xmldb_table('offlinequiz_group_questions');
        $field = new xmldb_field('usageslot', XMLDB_TYPE_INTEGER, '4', null, null, null, null, 'position');
        // Launch rename field page.
        $dbman->rename_field($table, $field, 'slot');
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2015060501, 'offlinequiz');
    }
    if ($oldversion < 2015060502) {
        // Define field maxmark to be added to offlinequiz_group_questions.
        $table = new xmldb_table('offlinequiz_group_questions');
        $field = new xmldb_field('maxmark', XMLDB_TYPE_NUMBER, '12, 7', null, XMLDB_NOTNULL, null, '1', 'slot');
        // Conditionally launch add field maxmark.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2015060502, 'offlinequiz');
    }
    if ($oldversion < 2015060902) {
        // This upgrade migrates old offlinequiz_q_instances grades (maxgrades) to new
        // maxmark field in offlinequiz_group_questions.
        // It also deletes group questions with questionid 0 (pagebreaks) and inserts the
        // correct page number instead.
        $numofflinequizzes = $DB->count_records('offlinequiz');
        if ($numofflinequizzes > 0) {
            $pbar = new progress_bar('offlinequizquestionstoslots', 500, true);
            $pbar->create();
            $pbar->update(0, $numofflinequizzes, "Upgrading offlinequiz group questions - {0}/{$numofflinequizzes}.");
            $numberdone = 0;
            $offlinequizzes = $DB->get_recordset('offlinequiz', null, 'id', 'id, numgroups');
            foreach ($offlinequizzes as $offlinequiz) {
                $transaction = $DB->start_delegated_transaction();
                $groups = $DB->get_records('offlinequiz_groups', array('offlinequizid' => $offlinequiz->id), 'number', '*');
                $instancesraw = $DB->get_records('offlinequiz_q_instances', array('offlinequizid' => $offlinequiz->id));
                $questioninstances = array();
                foreach ($instancesraw as $instance) {
                    if (!array_key_exists($instance->questionid, $questioninstances)) {
                        $questioninstances[$instance->questionid] = $instance;
                    }
                }
                foreach ($groups as $group) {
                    $groupquestions = $DB->get_records('offlinequiz_group_questions', array('offlinequizid' => $offlinequiz->id, 'offlinegroupid' => $group->id), 'position');
                    // For every group we start on page 1.
                    $currentpage = 1;
                    $currentslot = 1;
                    foreach ($groupquestions as $groupquestion) {
                        $needsupdate = false;
                        if ($groupquestion->questionid == 0) {
                            // We remove the old pagebreaks with questionid==0.
                            $DB->delete_records('offlinequiz_group_questions', array('id' => $groupquestion->id));
                            $currentpage++;
                            continue;
                        }
                        // If the maxmarks in the question instances differs from the default maxmark (1)
                        // of the offlinequiz_group_questions then change it.
                        if (array_key_exists($groupquestion->questionid, $questioninstances) && ($maxmark = floatval($questioninstances[$groupquestion->questionid]->grade)) && abs(floatval($groupquestion->maxmark) - $maxmark) > 0.001) {
                            $groupquestion->maxmark = $maxmark;
                            $needsupdate = true;
                        }
                        // If the page number is not correct, then change it.
                        if ($groupquestion->page != $currentpage) {
                            $groupquestion->page = $currentpage;
                            $needsupdate = true;
                        }
                        // If the slot is not set, then fill it.
                        if (!$groupquestion->slot) {
                            $groupquestion->slot = $currentslot;
                            $needsupdate = true;
                        }
                        if ($needsupdate) {
                            $DB->update_record('offlinequiz_group_questions', $groupquestion);
                        }
                        $currentslot++;
                    }
                }
                // Done with this offlinequiz. Update progress bar.
                $numberdone++;
                $pbar->update($numberdone, $numofflinequizzes, "Upgrading offlinequiz group questions - {$numberdone}/{$numofflinequizzes}.");
                $transaction->allow_commit();
            }
        }
        // Offlinequiz savepoint reached.
        upgrade_mod_savepoint(true, 2015060902, 'offlinequiz');
    }
    // TODO migrate old offlinequiz_q_instances maxmarks to new maxmark field in offlinequiz_group_questions.
    // TODO migrate  offlinequiz_group_questions to fill in page field correctly. For every group use the
    //      position field to find new pages and insert them.
    //      Adapt offlinequiz code to handle missing zeros as pagebreaks.
    return true;
}
/**
 *
 * @global stdClass $CFG
 * @global stdClass $USER
 * @global moodle_database $DB
 * @global core_renderer $OUTPUT
 * @param int $oldversion
 * @return bool always true
 */
function xmldb_main_upgrade($oldversion)
{
    global $CFG, $USER, $DB, $OUTPUT;
    require_once $CFG->libdir . '/db/upgradelib.php';
    // Core Upgrade-related functions
    $dbman = $DB->get_manager();
    // loads ddl manager and xmldb classes
    ////////////////////////////////////////
    ///upgrade supported only from 1.9.x ///
    ////////////////////////////////////////
    if ($oldversion < 2008030600) {
        //NOTE: this table was added much later later in dev cycle, but we need it here, upgrades from pre PR1 not supported
        /// Define table upgrade_log to be created
        $table = new xmldb_table('upgrade_log');
        /// Adding fields to table upgrade_log
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('type', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('plugin', XMLDB_TYPE_CHAR, '100', null, null, null, null);
        $table->add_field('version', XMLDB_TYPE_CHAR, '100', null, null, null, null);
        $table->add_field('targetversion', XMLDB_TYPE_CHAR, '100', null, null, null, null);
        $table->add_field('info', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('details', XMLDB_TYPE_TEXT, 'small', null, null, null, null);
        $table->add_field('backtrace', XMLDB_TYPE_TEXT, 'small', null, null, null, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        /// Adding keys to table upgrade_log
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        /// Adding indexes to table upgrade_log
        $table->add_index('timemodified', XMLDB_INDEX_NOTUNIQUE, array('timemodified'));
        $table->add_index('type-timemodified', XMLDB_INDEX_NOTUNIQUE, array('type', 'timemodified'));
        /// Create table for upgrade_log
        $dbman->create_table($table);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008030600);
    }
    if ($oldversion < 2008030601) {
        //NOTE: this table was added much later later in dev cycle, but we need it here, upgrades from pre PR1 not supported
        /// Define table log_queries to be created
        $table = new xmldb_table('log_queries');
        /// Adding fields to table log_queries
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('qtype', XMLDB_TYPE_INTEGER, '5', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('sqltext', XMLDB_TYPE_TEXT, 'medium', null, XMLDB_NOTNULL, null, null);
        $table->add_field('sqlparams', XMLDB_TYPE_TEXT, 'big', null, null, null, null);
        $table->add_field('error', XMLDB_TYPE_INTEGER, '5', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('info', XMLDB_TYPE_TEXT, 'small', null, null, null, null);
        $table->add_field('backtrace', XMLDB_TYPE_TEXT, 'small', null, null, null, null);
        $table->add_field('exectime', XMLDB_TYPE_NUMBER, '10, 5', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timelogged', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        /// Adding keys to table log_queries
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Conditionally launch create table for log_queries
        $dbman->create_table($table);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008030601);
    }
    if ($oldversion < 2008030602) {
        @unlink($CFG->dataroot . '/cache/languages');
        if (file_exists("{$CFG->dataroot}/lang")) {
            // rename old lang directory so that the new and old langs do not mix
            if (rename("{$CFG->dataroot}/lang", "{$CFG->dataroot}/oldlang")) {
                $oldlang = "{$CFG->dataroot}/oldlang";
            } else {
                $oldlang = "{$CFG->dataroot}/lang";
            }
        } else {
            $oldlang = '';
        }
        // TODO: fetch previously installed languages ("*_utf8") found in $oldlang from moodle.org
        upgrade_set_timeout(60 * 20);
        // this may take a while
        // TODO: add some info file to $oldlang describing what to do with "$oldlang/*_utf8_local" dirs
        // Main savepoint reached
        upgrade_main_savepoint(true, 2008030602);
    }
    if ($oldversion < 2008030700) {
        upgrade_set_timeout(60 * 20);
        // this may take a while
        /// Define index contextid-lowerboundary (not unique) to be dropped form grade_letters
        $table = new xmldb_table('grade_letters');
        $index = new xmldb_index('contextid-lowerboundary', XMLDB_INDEX_NOTUNIQUE, array('contextid', 'lowerboundary'));
        /// Launch drop index contextid-lowerboundary
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        /// Define index contextid-lowerboundary-letter (unique) to be added to grade_letters
        $table = new xmldb_table('grade_letters');
        $index = new xmldb_index('contextid-lowerboundary-letter', XMLDB_INDEX_UNIQUE, array('contextid', 'lowerboundary', 'letter'));
        /// Launch add index contextid-lowerboundary-letter
        $dbman->add_index($table, $index);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008030700);
    }
    if ($oldversion < 2008050100) {
        // Update courses that used weekscss to weeks
        $DB->set_field('course', 'format', 'weeks', array('format' => 'weekscss'));
        upgrade_main_savepoint(true, 2008050100);
    }
    if ($oldversion < 2008050200) {
        // remove unused config options
        unset_config('statsrolesupgraded');
        upgrade_main_savepoint(true, 2008050200);
    }
    if ($oldversion < 2008050700) {
        upgrade_set_timeout(60 * 20);
        // this may take a while
        /// Fix minor problem caused by MDL-5482.
        require_once $CFG->dirroot . '/question/upgrade.php';
        question_fix_random_question_parents();
        upgrade_main_savepoint(true, 2008050700);
    }
    if ($oldversion < 2008051201) {
        echo $OUTPUT->notification('Increasing size of user idnumber field, this may take a while...', 'notifysuccess');
        upgrade_set_timeout(60 * 20);
        // this may take a while
        /// Under MySQL and Postgres... detect old NULL contents and change them by correct empty string. MDL-14859
        $dbfamily = $DB->get_dbfamily();
        if ($dbfamily === 'mysql' || $dbfamily === 'postgres') {
            $DB->execute("UPDATE {user} SET idnumber = '' WHERE idnumber IS NULL");
        }
        /// Define index idnumber (not unique) to be dropped form user
        $table = new xmldb_table('user');
        $index = new xmldb_index('idnumber', XMLDB_INDEX_NOTUNIQUE, array('idnumber'));
        /// Launch drop index idnumber
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        /// Changing precision of field idnumber on table user to (255)
        $table = new xmldb_table('user');
        $field = new xmldb_field('idnumber', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null, 'password');
        /// Launch change of precision for field idnumber
        $dbman->change_field_precision($table, $field);
        /// Launch add index idnumber again
        $index = new xmldb_index('idnumber', XMLDB_INDEX_NOTUNIQUE, array('idnumber'));
        $dbman->add_index($table, $index);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008051201);
    }
    if ($oldversion < 2008051203) {
        $table = new xmldb_table('mnet_enrol_course');
        $field = new xmldb_field('sortorder', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, 0);
        $dbman->change_field_precision($table, $field);
        upgrade_main_savepoint(true, 2008051203);
    }
    if ($oldversion < 2008063001) {
        upgrade_set_timeout(60 * 20);
        // this may take a while
        // table to be modified
        $table = new xmldb_table('tag_instance');
        // add field
        $field = new xmldb_field('tiuserid');
        if (!$dbman->field_exists($table, $field)) {
            $field->set_attributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, 0, 'itemid');
            $dbman->add_field($table, $field);
        }
        // modify index
        $index = new xmldb_index('itemtype-itemid-tagid');
        $index->set_attributes(XMLDB_INDEX_UNIQUE, array('itemtype', 'itemid', 'tagid'));
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        $index = new xmldb_index('itemtype-itemid-tagid-tiuserid');
        $index->set_attributes(XMLDB_INDEX_UNIQUE, array('itemtype', 'itemid', 'tagid', 'tiuserid'));
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008063001);
    }
    if ($oldversion < 2008070300) {
        $DB->delete_records_select('role_names', $DB->sql_isempty('role_names', 'name', false, false));
        upgrade_main_savepoint(true, 2008070300);
    }
    if ($oldversion < 2008070701) {
        /// Define table portfolio_instance to be created
        $table = new xmldb_table('portfolio_instance');
        /// Adding fields to table portfolio_instance
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('plugin', XMLDB_TYPE_CHAR, '50', null, XMLDB_NOTNULL, null, null);
        $table->add_field('name', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('visible', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '1');
        /// Adding keys to table portfolio_instance
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Conditionally launch create table for portfolio_instance
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Define table portfolio_instance_config to be created
        $table = new xmldb_table('portfolio_instance_config');
        /// Adding fields to table portfolio_instance_config
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('instance', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('name', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('value', XMLDB_TYPE_TEXT, 'big', null, null, null, null);
        /// Adding keys to table portfolio_instance_config
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('instance', XMLDB_KEY_FOREIGN, array('instance'), 'portfolio_instance', array('id'));
        /// Adding indexes to table portfolio_instance_config
        $table->add_index('name', XMLDB_INDEX_NOTUNIQUE, array('name'));
        /// Conditionally launch create table for portfolio_instance_config
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Define table portfolio_instance_user to be created
        $table = new xmldb_table('portfolio_instance_user');
        /// Adding fields to table portfolio_instance_user
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null, null);
        $table->add_field('instance', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('name', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('value', XMLDB_TYPE_TEXT, 'big', null, null, null, null);
        /// Adding keys to table portfolio_instance_user
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('instancefk', XMLDB_KEY_FOREIGN, array('instance'), 'portfolio_instance', array('id'));
        $table->add_key('userfk', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        /// Conditionally launch create table for portfolio_instance_user
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008070701);
    }
    if ($oldversion < 2008072400) {
        /// Create the database tables for message_processors
        $table = new xmldb_table('message_processors');
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('name', XMLDB_TYPE_CHAR, '166', null, XMLDB_NOTNULL, null, null);
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $dbman->create_table($table);
        /// delete old and create new fields
        $table = new xmldb_table('message');
        $field = new xmldb_field('messagetype');
        $dbman->drop_field($table, $field);
        /// fields to rename
        $field = new xmldb_field('message');
        $field->set_attributes(XMLDB_TYPE_TEXT, 'small', null, null, null, null, null);
        $dbman->rename_field($table, $field, 'fullmessage');
        $field = new xmldb_field('format');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, null, null, '0', null);
        $dbman->rename_field($table, $field, 'fullmessageformat');
        /// new message fields
        $field = new xmldb_field('subject');
        $field->set_attributes(XMLDB_TYPE_TEXT, 'small', null, null, null, null, null);
        $dbman->add_field($table, $field);
        $field = new xmldb_field('fullmessagehtml');
        $field->set_attributes(XMLDB_TYPE_TEXT, 'medium', null, null, null, null, null);
        $dbman->add_field($table, $field);
        $field = new xmldb_field('smallmessage');
        $field->set_attributes(XMLDB_TYPE_TEXT, 'small', null, null, null, null, null);
        $dbman->add_field($table, $field);
        $table = new xmldb_table('message_read');
        $field = new xmldb_field('messagetype');
        $dbman->drop_field($table, $field);
        $field = new xmldb_field('mailed');
        $dbman->drop_field($table, $field);
        /// fields to rename
        $field = new xmldb_field('message');
        $field->set_attributes(XMLDB_TYPE_TEXT, 'small', null, null, null, null, null);
        $dbman->rename_field($table, $field, 'fullmessage');
        $field = new xmldb_field('format');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, null, null, '0', null);
        $dbman->rename_field($table, $field, 'fullmessageformat');
        /// new message fields
        $field = new xmldb_field('subject');
        $field->set_attributes(XMLDB_TYPE_TEXT, 'small', null, null, null, null, null);
        $dbman->add_field($table, $field);
        $field = new xmldb_field('fullmessagehtml');
        $field->set_attributes(XMLDB_TYPE_TEXT, 'medium', null, null, null, null, null);
        $dbman->add_field($table, $field);
        $field = new xmldb_field('smallmessage');
        $field->set_attributes(XMLDB_TYPE_TEXT, 'small', null, null, null, null, null);
        $dbman->add_field($table, $field);
        /// new table
        $table = new xmldb_table('message_working');
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('unreadmessageid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('processorid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $dbman->create_table($table);
        upgrade_main_savepoint(true, 2008072400);
    }
    if ($oldversion < 2008072800) {
        /// Define field enablecompletion to be added to course
        $table = new xmldb_table('course');
        $field = new xmldb_field('enablecompletion');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'defaultrole');
        /// Launch add field enablecompletion
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Define field completion to be added to course_modules
        $table = new xmldb_table('course_modules');
        $field = new xmldb_field('completion');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'groupmembersonly');
        /// Launch add field completion
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Define field completiongradeitemnumber to be added to course_modules
        $field = new xmldb_field('completiongradeitemnumber');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null, 'completion');
        /// Launch add field completiongradeitemnumber
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Define field completionview to be added to course_modules
        $field = new xmldb_field('completionview');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'completiongradeitemnumber');
        /// Launch add field completionview
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Define field completionexpected to be added to course_modules
        $field = new xmldb_field('completionexpected');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'completionview');
        /// Launch add field completionexpected
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Define table course_modules_completion to be created
        $table = new xmldb_table('course_modules_completion');
        if (!$dbman->table_exists($table)) {
            /// Adding fields to table course_modules_completion
            $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
            $table->add_field('coursemoduleid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
            $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
            $table->add_field('completionstate', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
            $table->add_field('viewed', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, null, null, null);
            $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
            /// Adding keys to table course_modules_completion
            $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
            /// Adding indexes to table course_modules_completion
            $table->add_index('coursemoduleid', XMLDB_INDEX_NOTUNIQUE, array('coursemoduleid'));
            $table->add_index('userid', XMLDB_INDEX_NOTUNIQUE, array('userid'));
            /// Launch create table for course_modules_completion
            $dbman->create_table($table);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008072800);
    }
    if ($oldversion < 2008073000) {
        /// Define table portfolio_log to be created
        $table = new xmldb_table('portfolio_log');
        /// Adding fields to table portfolio_log
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('time', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('portfolio', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('caller_class', XMLDB_TYPE_CHAR, '150', null, XMLDB_NOTNULL, null, null);
        $table->add_field('caller_file', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('caller_sha1', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('tempdataid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('returnurl', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('continueurl', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        /// Adding keys to table portfolio_log
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('userfk', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        $table->add_key('portfoliofk', XMLDB_KEY_FOREIGN, array('portfolio'), 'portfolio_instance', array('id'));
        /// Conditionally launch create table for portfolio_log
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008073000);
    }
    if ($oldversion < 2008073104) {
        /// Drop old table that might exist for some people
        $table = new xmldb_table('message_providers');
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        /// Define table message_providers to be created
        $table = new xmldb_table('message_providers');
        /// Adding fields to table message_providers
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('name', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null);
        $table->add_field('component', XMLDB_TYPE_CHAR, '200', null, XMLDB_NOTNULL, null, null);
        $table->add_field('capability', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        /// Adding keys to table message_providers
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Adding indexes to table message_providers
        $table->add_index('componentname', XMLDB_INDEX_UNIQUE, array('component', 'name'));
        /// Create table for message_providers
        $dbman->create_table($table);
        upgrade_main_savepoint(true, 2008073104);
    }
    if ($oldversion < 2008073111) {
        /// Define table files to be created
        $table = new xmldb_table('files');
        /// Adding fields to table files
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('contenthash', XMLDB_TYPE_CHAR, '40', null, XMLDB_NOTNULL, null, null);
        $table->add_field('pathnamehash', XMLDB_TYPE_CHAR, '40', null, XMLDB_NOTNULL, null, null);
        $table->add_field('contextid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('component', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null);
        $table->add_field('filearea', XMLDB_TYPE_CHAR, '50', null, XMLDB_NOTNULL, null, null);
        $table->add_field('itemid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('filepath', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('filename', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('filesize', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('mimetype', XMLDB_TYPE_CHAR, '100', null, null, null, null);
        $table->add_field('status', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('source', XMLDB_TYPE_TEXT, 'small', null, null, null, null);
        $table->add_field('author', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        $table->add_field('license', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        /// Adding keys to table files
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('contextid', XMLDB_KEY_FOREIGN, array('contextid'), 'context', array('id'));
        $table->add_key('userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        /// Adding indexes to table files
        $table->add_index('component-filearea-contextid-itemid', XMLDB_INDEX_NOTUNIQUE, array('component', 'filearea', 'contextid', 'itemid'));
        $table->add_index('contenthash', XMLDB_INDEX_NOTUNIQUE, array('contenthash'));
        $table->add_index('pathnamehash', XMLDB_INDEX_UNIQUE, array('pathnamehash'));
        /// Conditionally launch create table for files
        $dbman->create_table($table);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008073111);
    }
    if ($oldversion < 2008073112) {
        // Define field legacyfiles to be added to course
        $table = new xmldb_table('course');
        $field = new xmldb_field('legacyfiles', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'maxbytes');
        // Launch add field legacyfiles
        $dbman->add_field($table, $field);
        // enable legacy files in all courses
        $DB->execute("UPDATE {course} SET legacyfiles = 2");
        // Main savepoint reached
        upgrade_main_savepoint(true, 2008073112);
    }
    if ($oldversion < 2008073113) {
        /// move all course, backup and other files to new filepool based storage
        upgrade_migrate_files_courses();
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008073113);
    }
    if ($oldversion < 2008073114) {
        /// move all course, backup and other files to new filepool based storage
        upgrade_migrate_files_blog();
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008073114);
    }
    if ($oldversion < 2008080400) {
        // Add field ssl_jump_url to mnet application, and populate existing default applications
        $table = new xmldb_table('mnet_application');
        $field = new xmldb_field('sso_jump_url');
        if (!$dbman->field_exists($table, $field)) {
            $field->set_attributes(XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
            $dbman->add_field($table, $field);
            $DB->set_field('mnet_application', 'sso_jump_url', '/auth/mnet/jump.php', array('name' => 'moodle'));
            $DB->set_field('mnet_application', 'sso_jump_url', '/auth/xmlrpc/jump.php', array('name' => 'mahara'));
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008080400);
    }
    if ($oldversion < 2008080500) {
        /// Define table portfolio_tempdata to be created
        $table = new xmldb_table('portfolio_tempdata');
        /// Adding fields to table portfolio_tempdata
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('data', XMLDB_TYPE_TEXT, 'big', null, null, null, null);
        $table->add_field('expirytime', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('instance', XMLDB_TYPE_INTEGER, '10', null, null, null, '0');
        /// Adding keys to table portfolio_tempdata
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('userfk', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        $table->add_key('instance', XMLDB_KEY_FOREIGN, array('instance'), 'portfolio_instance', array('id'));
        /// Conditionally launch create table for portfolio_tempdata
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008080500);
    }
    if ($oldversion < 2008081500) {
        /// Changing the type of all the columns that the question bank uses to store grades to be NUMBER(12, 7).
        $table = new xmldb_table('question');
        $field = new xmldb_field('defaultgrade', XMLDB_TYPE_NUMBER, '12, 7', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '1.0000000', 'generalfeedback');
        $dbman->change_field_type($table, $field);
        upgrade_main_savepoint(true, 2008081500);
    }
    if ($oldversion < 2008081501) {
        $table = new xmldb_table('question');
        $field = new xmldb_field('penalty', XMLDB_TYPE_NUMBER, '12, 7', null, XMLDB_NOTNULL, null, '0.1000000', 'defaultgrade');
        $dbman->change_field_type($table, $field);
        upgrade_main_savepoint(true, 2008081501);
    }
    if ($oldversion < 2008081502) {
        $table = new xmldb_table('question_answers');
        $field = new xmldb_field('fraction', XMLDB_TYPE_NUMBER, '12, 7', null, XMLDB_NOTNULL, null, '0', 'answer');
        $dbman->change_field_type($table, $field);
        upgrade_main_savepoint(true, 2008081502);
    }
    if ($oldversion < 2008081503) {
        $table = new xmldb_table('question_sessions');
        $field = new xmldb_field('sumpenalty', XMLDB_TYPE_NUMBER, '12, 7', null, XMLDB_NOTNULL, null, '0', 'newgraded');
        $dbman->change_field_type($table, $field);
        upgrade_main_savepoint(true, 2008081503);
    }
    if ($oldversion < 2008081504) {
        $table = new xmldb_table('question_states');
        $field = new xmldb_field('grade', XMLDB_TYPE_NUMBER, '12, 7', null, XMLDB_NOTNULL, null, '0', 'event');
        $dbman->change_field_type($table, $field);
        upgrade_main_savepoint(true, 2008081504);
    }
    if ($oldversion < 2008081505) {
        $table = new xmldb_table('question_states');
        $field = new xmldb_field('raw_grade', XMLDB_TYPE_NUMBER, '12, 7', null, XMLDB_NOTNULL, null, '0', 'grade');
        $dbman->change_field_type($table, $field);
        upgrade_main_savepoint(true, 2008081505);
    }
    if ($oldversion < 2008081506) {
        $table = new xmldb_table('question_states');
        $field = new xmldb_field('penalty', XMLDB_TYPE_NUMBER, '12, 7', null, XMLDB_NOTNULL, null, '0', 'raw_grade');
        $dbman->change_field_type($table, $field);
        upgrade_main_savepoint(true, 2008081506);
    }
    if ($oldversion < 2008081600) {
        /// all 1.9 sites and fresh installs must already be unicode, not needed anymore
        unset_config('unicodedb');
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008081600);
    }
    if ($oldversion < 2008082602) {
        /// Define table repository to be dropped
        $table = new xmldb_table('repository');
        /// Conditionally launch drop table for repository
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        /// Define table repository to be created
        $table = new xmldb_table('repository');
        /// Adding fields to table repository
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('type', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('visible', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, null, null, '1');
        $table->add_field('sortorder', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        /// Adding keys to table repository
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Conditionally launch create table for repository
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Define table repository_instances to be created
        $table = new xmldb_table('repository_instances');
        /// Adding fields to table repository_instances
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('name', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('typeid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('contextid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('username', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        $table->add_field('password', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('readonly', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        /// Adding keys to table repository_instances
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Conditionally launch create table for repository_instances
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Define table repository_instance_config to be created
        $table = new xmldb_table('repository_instance_config');
        /// Adding fields to table repository_instance_config
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('instanceid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('name', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('value', XMLDB_TYPE_TEXT, 'big', null, null, null, null);
        /// Adding keys to table repository_instance_config
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Conditionally launch create table for repository_instance_config
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008082602);
    }
    if ($oldversion < 2008082700) {
        /// Add a new column to the question sessions table to record whether a
        /// question has been flagged.
        /// Define field flagged to be added to question_sessions
        $table = new xmldb_table('question_sessions');
        $field = new xmldb_field('flagged', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0', 'manualcomment');
        /// Conditionally launch add field flagged
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008082700);
    }
    if ($oldversion < 2008082900) {
        /// Changing precision of field parent_type on table mnet_rpc to (20)
        $table = new xmldb_table('mnet_rpc');
        $field = new xmldb_field('parent_type', XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, null, 'xmlrpc_path');
        /// Launch change of precision for field parent_type
        $dbman->change_field_precision($table, $field);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008082900);
    }
    // MDL-16411 Move all plugintype_pluginname_version values from config to config_plugins.
    if ($oldversion < 2008091000) {
        foreach (get_object_vars($CFG) as $name => $value) {
            if (substr($name, strlen($name) - 8) !== '_version') {
                continue;
            }
            $pluginname = substr($name, 0, strlen($name) - 8);
            if (!strpos($pluginname, '_')) {
                // Skip things like backup_version that don't contain an extra _
                continue;
            }
            if ($pluginname == 'enrol_ldap_version') {
                // Special case - this is something different from a plugin version number.
                continue;
            }
            if (!preg_match('/^\\d{10}$/', $value)) {
                // Extra safety check, skip anything that does not look like a Moodle
                // version number (10 digits).
                continue;
            }
            set_config('version', $value, $pluginname);
            unset_config($name);
        }
        upgrade_main_savepoint(true, 2008091000);
    }
    if ($oldversion < 2008092300) {
        unset_config('editorspelling');
        unset_config('editordictionary');
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008092300);
    }
    if ($oldversion < 2008101300) {
        if (!get_config(NULL, 'statsruntimedays')) {
            set_config('statsruntimedays', '31');
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008101300);
    }
    /// Drop the deprecated teacher, teachers, student and students columns from the course table.
    if ($oldversion < 2008111200) {
        $table = new xmldb_table('course');
        /// Conditionally launch drop field teacher
        $field = new xmldb_field('teacher');
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        /// Conditionally launch drop field teacher
        $field = new xmldb_field('teachers');
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        /// Conditionally launch drop field teacher
        $field = new xmldb_field('student');
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        /// Conditionally launch drop field teacher
        $field = new xmldb_field('students');
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008111200);
    }
    /// Add a unique index to the role.name column.
    if ($oldversion < 2008111800) {
        /// Define index name (unique) to be added to role
        $table = new xmldb_table('role');
        $index = new xmldb_index('name', XMLDB_INDEX_UNIQUE, array('name'));
        /// Conditionally launch add index name
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008111800);
    }
    /// Add a unique index to the role.shortname column.
    if ($oldversion < 2008111801) {
        /// Define index shortname (unique) to be added to role
        $table = new xmldb_table('role');
        $index = new xmldb_index('shortname', XMLDB_INDEX_UNIQUE, array('shortname'));
        /// Conditionally launch add index shortname
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008111801);
    }
    if ($oldversion < 2008120700) {
        /// Changing precision of field shortname on table course_request to (100)
        $table = new xmldb_table('course_request');
        $field = new xmldb_field('shortname', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null, 'fullname');
        /// Before changing the field, drop dependent indexes
        /// Define index shortname (not unique) to be dropped form course_request
        $index = new xmldb_index('shortname', XMLDB_INDEX_NOTUNIQUE, array('shortname'));
        /// Conditionally launch drop index shortname
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        /// Launch change of precision for field shortname
        $dbman->change_field_precision($table, $field);
        /// After changing the field, recreate dependent indexes
        /// Define index shortname (not unique) to be added to course_request
        $index = new xmldb_index('shortname', XMLDB_INDEX_NOTUNIQUE, array('shortname'));
        /// Conditionally launch add index shortname
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008120700);
    }
    if ($oldversion < 2008120801) {
        /// Changing precision of field shortname on table mnet_enrol_course to (100)
        $table = new xmldb_table('mnet_enrol_course');
        $field = new xmldb_field('shortname', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null, 'fullname');
        /// Launch change of precision for field shortname
        $dbman->change_field_precision($table, $field);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008120801);
    }
    if ($oldversion < 2008121701) {
        /// Define field availablefrom to be added to course_modules
        $table = new xmldb_table('course_modules');
        $field = new xmldb_field('availablefrom', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'completionexpected');
        /// Conditionally launch add field availablefrom
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Define field availableuntil to be added to course_modules
        $field = new xmldb_field('availableuntil', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'availablefrom');
        /// Conditionally launch add field availableuntil
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Define field showavailability to be added to course_modules
        $field = new xmldb_field('showavailability', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'availableuntil');
        /// Conditionally launch add field showavailability
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Define table course_modules_availability to be created
        $table = new xmldb_table('course_modules_availability');
        /// Adding fields to table course_modules_availability
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('coursemoduleid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('sourcecmid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('requiredcompletion', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('gradeitemid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('grademin', XMLDB_TYPE_NUMBER, '10, 5', null, null, null, null);
        $table->add_field('grademax', XMLDB_TYPE_NUMBER, '10, 5', null, null, null, null);
        /// Adding keys to table course_modules_availability
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('coursemoduleid', XMLDB_KEY_FOREIGN, array('coursemoduleid'), 'course_modules', array('id'));
        $table->add_key('sourcecmid', XMLDB_KEY_FOREIGN, array('sourcecmid'), 'course_modules', array('id'));
        $table->add_key('gradeitemid', XMLDB_KEY_FOREIGN, array('gradeitemid'), 'grade_items', array('id'));
        /// Conditionally launch create table for course_modules_availability
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Changes to modinfo mean we need to rebuild course cache
        require_once $CFG->dirroot . '/course/lib.php';
        rebuild_course_cache(0, true);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2008121701);
    }
    if ($oldversion < 2009010500) {
        /// clean up config table a bit
        unset_config('session_error_counter');
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009010500);
    }
    if ($oldversion < 2009010600) {
        /// Define field originalquestion to be dropped from question_states
        $table = new xmldb_table('question_states');
        $field = new xmldb_field('originalquestion');
        /// Conditionally launch drop field originalquestion
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009010600);
    }
    if ($oldversion < 2009010601) {
        /// Changing precision of field ip on table log to (45)
        $table = new xmldb_table('log');
        $field = new xmldb_field('ip', XMLDB_TYPE_CHAR, '45', null, XMLDB_NOTNULL, null, null, 'userid');
        /// Launch change of precision for field ip
        $dbman->change_field_precision($table, $field);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009010601);
    }
    if ($oldversion < 2009010602) {
        /// Changing precision of field lastip on table user to (45)
        $table = new xmldb_table('user');
        $field = new xmldb_field('lastip', XMLDB_TYPE_CHAR, '45', null, XMLDB_NOTNULL, null, null, 'currentlogin');
        /// Launch change of precision for field lastip
        $dbman->change_field_precision($table, $field);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009010602);
    }
    if ($oldversion < 2009010603) {
        /// Changing precision of field ip_address on table mnet_host to (45)
        $table = new xmldb_table('mnet_host');
        $field = new xmldb_field('ip_address', XMLDB_TYPE_CHAR, '45', null, XMLDB_NOTNULL, null, null, 'wwwroot');
        /// Launch change of precision for field ip_address
        $dbman->change_field_precision($table, $field);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009010603);
    }
    if ($oldversion < 2009010604) {
        /// Changing precision of field ip on table mnet_log to (45)
        $table = new xmldb_table('mnet_log');
        $field = new xmldb_field('ip', XMLDB_TYPE_CHAR, '45', null, XMLDB_NOTNULL, null, null, 'userid');
        /// Launch change of precision for field ip
        $dbman->change_field_precision($table, $field);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009010604);
    }
    if ($oldversion < 2009011000) {
        /// Changing nullability of field configdata on table block_instance to null
        $table = new xmldb_table('block_instance');
        $field = new xmldb_field('configdata');
        $field->set_attributes(XMLDB_TYPE_TEXT, 'small', null, null, null, null, 'visible');
        /// Launch change of nullability for field configdata
        $dbman->change_field_notnull($table, $field);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009011000);
    }
    if ($oldversion < 2009011100) {
        /// Remove unused settings
        unset_config('zip');
        unset_config('unzip');
        unset_config('adminblocks_initialised');
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009011100);
    }
    if ($oldversion < 2009011101) {
        /// Migrate backup settings to core plugin config table
        $configs = $DB->get_records('backup_config');
        foreach ($configs as $config) {
            set_config($config->name, $config->value, 'backup');
        }
        /// Define table to be dropped
        $table = new xmldb_table('backup_config');
        /// Launch drop table for old backup config
        $dbman->drop_table($table);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009011101);
    }
    if ($oldversion < 2009011303) {
        /// Define table config_log to be created
        $table = new xmldb_table('config_log');
        /// Adding fields to table config_log
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('plugin', XMLDB_TYPE_CHAR, '100', null, null, null, null);
        $table->add_field('name', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null);
        $table->add_field('value', XMLDB_TYPE_TEXT, 'small', null, null, null, null);
        $table->add_field('oldvalue', XMLDB_TYPE_TEXT, 'small', null, null, null, null);
        /// Adding keys to table config_log
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        /// Adding indexes to table config_log
        $table->add_index('timemodified', XMLDB_INDEX_NOTUNIQUE, array('timemodified'));
        /// Launch create table for config_log
        $dbman->create_table($table);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009011303);
    }
    if ($oldversion < 2009011900) {
        /// Define table sessions2 to be dropped
        $table = new xmldb_table('sessions2');
        /// Conditionally launch drop table for sessions
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        /// Define table sessions to be dropped
        $table = new xmldb_table('sessions');
        /// Conditionally launch drop table for sessions
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        /// Define table sessions to be created
        $table = new xmldb_table('sessions');
        /// Adding fields to table sessions
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('state', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('sid', XMLDB_TYPE_CHAR, '128', null, XMLDB_NOTNULL, null, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('sessdata', XMLDB_TYPE_TEXT, 'big', null, null, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('firstip', XMLDB_TYPE_CHAR, '45', null, null, null, null);
        $table->add_field('lastip', XMLDB_TYPE_CHAR, '45', null, null, null, null);
        /// Adding keys to table sessions
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        /// Adding indexes to table sessions
        $table->add_index('state', XMLDB_INDEX_NOTUNIQUE, array('state'));
        $table->add_index('sid', XMLDB_INDEX_UNIQUE, array('sid'));
        $table->add_index('timecreated', XMLDB_INDEX_NOTUNIQUE, array('timecreated'));
        $table->add_index('timemodified', XMLDB_INDEX_NOTUNIQUE, array('timemodified'));
        /// Launch create table for sessions
        $dbman->create_table($table);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009011900);
    }
    if ($oldversion < 2009021800) {
        // Converting format of grade conditions, if any exist, to percentages.
        $DB->execute("\nUPDATE {course_modules_availability} SET grademin=(\n    SELECT 100.0*({course_modules_availability}.grademin-gi.grademin)\n        /(gi.grademax-gi.grademin)\n    FROM {grade_items} gi\n    WHERE gi.id={course_modules_availability}.gradeitemid)\nWHERE gradeitemid IS NOT NULL AND grademin IS NOT NULL");
        $DB->execute("\nUPDATE {course_modules_availability} SET grademax=(\n    SELECT 100.0*({course_modules_availability}.grademax-gi.grademin)\n        /(gi.grademax-gi.grademin)\n    FROM {grade_items} gi\n    WHERE gi.id={course_modules_availability}.gradeitemid)\nWHERE gradeitemid IS NOT NULL AND grademax IS NOT NULL");
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009021800);
    }
    if ($oldversion < 2009021801) {
        /// Define field backuptype to be added to backup_log
        $table = new xmldb_table('backup_log');
        $field = new xmldb_field('backuptype', XMLDB_TYPE_CHAR, '50', null, XMLDB_NOTNULL, null, null, 'info');
        /// Conditionally Launch add field backuptype and set all old records as 'scheduledbackup' records.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
            $DB->execute("UPDATE {backup_log} SET backuptype='scheduledbackup'");
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009021801);
    }
    /// Add default sort order for question types.
    if ($oldversion < 2009030300) {
        set_config('multichoice_sortorder', 1, 'question');
        set_config('truefalse_sortorder', 2, 'question');
        set_config('shortanswer_sortorder', 3, 'question');
        set_config('numerical_sortorder', 4, 'question');
        set_config('calculated_sortorder', 5, 'question');
        set_config('essay_sortorder', 6, 'question');
        set_config('match_sortorder', 7, 'question');
        set_config('randomsamatch_sortorder', 8, 'question');
        set_config('multianswer_sortorder', 9, 'question');
        set_config('description_sortorder', 10, 'question');
        set_config('random_sortorder', 11, 'question');
        set_config('missingtype_sortorder', 12, 'question');
        upgrade_main_savepoint(true, 2009030300);
    }
    /// MDL-18132 replace the use a new Role allow switch settings page, instead of
    /// $CFG->allowuserswitchrolestheycantassign
    if ($oldversion < 2009032000) {
        /// First create the new table.
        $table = new xmldb_table('role_allow_switch');
        /// Adding fields to table role_allow_switch
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('roleid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('allowswitch', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        /// Adding keys to table role_allow_switch
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('roleid', XMLDB_KEY_FOREIGN, array('roleid'), 'role', array('id'));
        $table->add_key('allowswitch', XMLDB_KEY_FOREIGN, array('allowswitch'), 'role', array('id'));
        /// Adding indexes to table role_allow_switch
        $table->add_index('roleid-allowoverride', XMLDB_INDEX_UNIQUE, array('roleid', 'allowswitch'));
        /// Conditionally launch create table for role_allow_switch
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009032000);
    }
    if ($oldversion < 2009032001) {
        /// Copy from role_allow_assign into the new table.
        $DB->execute('INSERT INTO {role_allow_switch} (roleid, allowswitch)
                SELECT roleid, allowassign FROM {role_allow_assign}');
        /// Unset the config variable used in 1.9.
        unset_config('allowuserswitchrolestheycantassign');
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009032001);
    }
    if ($oldversion < 2009040300) {
        /// Define table filter_active to be created
        $table = new xmldb_table('filter_active');
        /// Adding fields to table filter_active
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('filter', XMLDB_TYPE_CHAR, '32', null, XMLDB_NOTNULL, null, null);
        $table->add_field('contextid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('active', XMLDB_TYPE_INTEGER, '4', null, XMLDB_NOTNULL, null, null);
        $table->add_field('sortorder', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');
        /// Adding keys to table filter_active
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('contextid', XMLDB_KEY_FOREIGN, array('contextid'), 'context', array('id'));
        /// Adding indexes to table filter_active
        $table->add_index('contextid-filter', XMLDB_INDEX_UNIQUE, array('contextid', 'filter'));
        /// Conditionally launch create table for filter_active
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009040300);
    }
    if ($oldversion < 2009040301) {
        /// Define table filter_config to be created
        $table = new xmldb_table('filter_config');
        /// Adding fields to table filter_config
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('filter', XMLDB_TYPE_CHAR, '32', null, XMLDB_NOTNULL, null, null);
        $table->add_field('contextid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('name', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('value', XMLDB_TYPE_TEXT, 'small', null, null, null, null);
        /// Adding keys to table filter_config
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('contextid', XMLDB_KEY_FOREIGN, array('contextid'), 'context', array('id'));
        /// Adding indexes to table filter_config
        $table->add_index('contextid-filter-name', XMLDB_INDEX_UNIQUE, array('contextid', 'filter', 'name'));
        /// Conditionally launch create table for filter_config
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009040301);
    }
    if ($oldversion < 2009040302) {
        /// Transfer current settings from $CFG->textfilters
        $disabledfilters = filter_get_all_installed();
        if (empty($CFG->textfilters)) {
            $activefilters = array();
        } else {
            $activefilters = explode(',', $CFG->textfilters);
        }
        $syscontext = get_context_instance(CONTEXT_SYSTEM);
        $sortorder = 1;
        foreach ($activefilters as $filter) {
            filter_set_global_state($filter, TEXTFILTER_ON, $sortorder);
            $sortorder += 1;
            unset($disabledfilters[$filter]);
        }
        foreach ($disabledfilters as $filter => $notused) {
            filter_set_global_state($filter, TEXTFILTER_DISABLED, $sortorder);
            $sortorder += 1;
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009040302);
    }
    if ($oldversion < 2009040600) {
        /// Ensure that $CFG->stringfilters is set.
        if (empty($CFG->stringfilters)) {
            if (!empty($CFG->filterall)) {
                set_config('stringfilters', $CFG->textfilters);
            } else {
                set_config('stringfilters', '');
            }
        }
        set_config('filterall', !empty($CFG->stringfilters));
        unset_config('textfilters');
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009040600);
    }
    if ($oldversion < 2009041700) {
        /// To ensure the UI remains consistent with no behaviour change, any
        /// 'until' date in an activity condition should have 1 second subtracted
        /// (to go from 0:00 on the following day to 23:59 on the previous one).
        $DB->execute('UPDATE {course_modules} SET availableuntil = availableuntil - 1 WHERE availableuntil <> 0');
        require_once $CFG->dirroot . '/course/lib.php';
        rebuild_course_cache(0, true);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009041700);
    }
    if ($oldversion < 2009042600) {
        /// Deleting orphaned messages from deleted users.
        require_once $CFG->dirroot . '/message/lib.php';
        /// Detect deleted users with messages sent(useridfrom) and not read
        if ($deletedusers = $DB->get_records_sql('SELECT DISTINCT u.id
                                                    FROM {user} u
                                                    JOIN {message} m ON m.useridfrom = u.id
                                                   WHERE u.deleted = ?', array(1))) {
            foreach ($deletedusers as $deleteduser) {
                message_move_userfrom_unread2read($deleteduser->id);
                // move messages
            }
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009042600);
    }
    /// Dropping all enums/check contraints from core. MDL-18577
    if ($oldversion < 2009042700) {
        /// Changing list of values (enum) of field stattype on table stats_daily to none
        $table = new xmldb_table('stats_daily');
        $field = new xmldb_field('stattype', XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, 'activity', 'roleid');
        /// Launch change of list of values for field stattype
        $dbman->drop_enum_from_field($table, $field);
        /// Changing list of values (enum) of field stattype on table stats_weekly to none
        $table = new xmldb_table('stats_weekly');
        $field = new xmldb_field('stattype', XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, 'activity', 'roleid');
        /// Launch change of list of values for field stattype
        $dbman->drop_enum_from_field($table, $field);
        /// Changing list of values (enum) of field stattype on table stats_monthly to none
        $table = new xmldb_table('stats_monthly');
        $field = new xmldb_field('stattype', XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, 'activity', 'roleid');
        /// Launch change of list of values for field stattype
        $dbman->drop_enum_from_field($table, $field);
        /// Changing list of values (enum) of field publishstate on table post to none
        $table = new xmldb_table('post');
        $field = new xmldb_field('publishstate', XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, 'draft', 'attachment');
        /// Launch change of list of values for field publishstate
        $dbman->drop_enum_from_field($table, $field);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009042700);
    }
    if ($oldversion < 2009043000) {
        unset_config('grade_report_showgroups');
        upgrade_main_savepoint(true, 2009043000);
    }
    if ($oldversion < 2009050600) {
        /// Site front page blocks need to be moved due to page name change.
        $DB->set_field('block_instance', 'pagetype', 'site-index', array('pagetype' => 'course-view', 'pageid' => SITEID));
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009050600);
    }
    if ($oldversion < 2009050601) {
        /// Define table block_instance to be renamed to block_instances
        $table = new xmldb_table('block_instance');
        /// Launch rename table for block_instance
        $dbman->rename_table($table, 'block_instances');
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009050601);
    }
    if ($oldversion < 2009050602) {
        /// Define table block_instance to be renamed to block_instance_old
        $table = new xmldb_table('block_pinned');
        /// Launch rename table for block_instance
        $dbman->rename_table($table, 'block_pinned_old');
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009050602);
    }
    if ($oldversion < 2009050603) {
        /// Define table block_instance_old to be created
        $table = new xmldb_table('block_instance_old');
        /// Adding fields to table block_instance_old
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('oldid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('blockid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('pageid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('pagetype', XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, null);
        $table->add_field('position', XMLDB_TYPE_CHAR, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('weight', XMLDB_TYPE_INTEGER, '3', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('visible', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('configdata', XMLDB_TYPE_TEXT, 'small', null, null, null, null);
        /// Adding keys to table block_instance_old
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('blockid', XMLDB_KEY_FOREIGN, array('blockid'), 'block', array('id'));
        /// Adding indexes to table block_instance_old
        $table->add_index('pageid', XMLDB_INDEX_NOTUNIQUE, array('pageid'));
        $table->add_index('pagetype', XMLDB_INDEX_NOTUNIQUE, array('pagetype'));
        /// Conditionally launch create table for block_instance_old
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009050603);
    }
    if ($oldversion < 2009050604) {
        /// Copy current blocks data from block_instances to block_instance_old
        $DB->execute('INSERT INTO {block_instance_old} (oldid, blockid, pageid, pagetype, position, weight, visible, configdata)
            SELECT id, blockid, pageid, pagetype, position, weight, visible, configdata FROM {block_instances} ORDER BY id');
        upgrade_main_savepoint(true, 2009050604);
    }
    if ($oldversion < 2009050605) {
        /// Define field multiple to be dropped from block
        $table = new xmldb_table('block');
        $field = new xmldb_field('multiple');
        /// Conditionally launch drop field multiple
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009050605);
    }
    if ($oldversion < 2009050606) {
        $table = new xmldb_table('block_instances');
        /// Rename field weight on table block_instances to defaultweight
        $field = new xmldb_field('weight', XMLDB_TYPE_INTEGER, 10, null, XMLDB_NOTNULL, null, null, 'position');
        $dbman->rename_field($table, $field, 'defaultweight');
        /// Rename field position on table block_instances to defaultregion
        $field = new xmldb_field('position', XMLDB_TYPE_CHAR, '10', null, XMLDB_NOTNULL, null, null, 'pagetype');
        $dbman->rename_field($table, $field, 'defaultregion');
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009050606);
    }
    if ($oldversion < 2009050607) {
        /// Changing precision of field defaultregion on table block_instances to (16)
        $table = new xmldb_table('block_instances');
        $field = new xmldb_field('defaultregion', XMLDB_TYPE_CHAR, '16', null, XMLDB_NOTNULL, null, null, 'pagetype');
        /// Launch change of precision for field defaultregion
        $dbman->change_field_precision($table, $field);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009050607);
    }
    if ($oldversion < 2009050608) {
        /// Change regions to the new notation
        $DB->set_field('block_instances', 'defaultregion', 'side-pre', array('defaultregion' => 'l'));
        $DB->set_field('block_instances', 'defaultregion', 'side-post', array('defaultregion' => 'r'));
        $DB->set_field('block_instances', 'defaultregion', 'course-view-top', array('defaultregion' => 'c'));
        // This third one is a custom value from contrib/patches/center_blocks_position_patch and the
        // flex page course format. Hopefully this new value is an adequate alternative.
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009050608);
    }
    if ($oldversion < 2009050609) {
        /// Define key blockname (unique) to be added to block
        $table = new xmldb_table('block');
        $key = new xmldb_key('blockname', XMLDB_KEY_UNIQUE, array('name'));
        /// Launch add key blockname
        $dbman->add_key($table, $key);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009050609);
    }
    if ($oldversion < 2009050610) {
        $table = new xmldb_table('block_instances');
        /// Define field blockname to be added to block_instances
        $field = new xmldb_field('blockname', XMLDB_TYPE_CHAR, '40', null, null, null, null, 'blockid');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Define field contextid to be added to block_instances
        $field = new xmldb_field('contextid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null, 'blockname');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Define field showinsubcontexts to be added to block_instances
        $field = new xmldb_field('showinsubcontexts', XMLDB_TYPE_INTEGER, '4', null, null, null, null, 'contextid');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Define field subpagepattern to be added to block_instances
        $field = new xmldb_field('subpagepattern', XMLDB_TYPE_CHAR, '16', null, null, null, null, 'pagetype');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009050610);
    }
    if ($oldversion < 2009050611) {
        $table = new xmldb_table('block_instances');
        /// Fill in blockname from blockid
        $DB->execute("UPDATE {block_instances} SET blockname = (SELECT name FROM {block} WHERE id = blockid)");
        /// Set showinsubcontexts = 0 for all rows.
        $DB->execute("UPDATE {block_instances} SET showinsubcontexts = 0");
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009050611);
    }
    if ($oldversion < 2009050612) {
        /// Rename field pagetype on table block_instances to pagetypepattern
        $table = new xmldb_table('block_instances');
        $field = new xmldb_field('pagetype', XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, null, 'pageid');
        /// Launch rename field pagetype
        $dbman->rename_field($table, $field, 'pagetypepattern');
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009050612);
    }
    if ($oldversion < 2009050613) {
        /// fill in contextid and subpage, and update pagetypepattern from pagetype and pageid
        /// site-index
        $frontpagecontext = get_context_instance(CONTEXT_COURSE, SITEID);
        $DB->execute("UPDATE {block_instances} SET contextid = " . $frontpagecontext->id . ",\n                                                   pagetypepattern = 'site-index',\n                                                   subpagepattern = NULL\n                      WHERE pagetypepattern = 'site-index'");
        /// course-view
        $DB->execute("UPDATE {block_instances} SET\n                        contextid = (\n                            SELECT {context}.id\n                            FROM {context}\n                            JOIN {course} ON instanceid = {course}.id AND contextlevel = " . CONTEXT_COURSE . "\n                            WHERE {course}.id = pageid\n                        ),\n                       pagetypepattern = 'course-view-*',\n                       subpagepattern = NULL\n                      WHERE pagetypepattern = 'course-view'");
        /// admin
        $syscontext = get_context_instance(CONTEXT_SYSTEM);
        $DB->execute("UPDATE {block_instances} SET\n                        contextid = " . $syscontext->id . ",\n                        pagetypepattern = 'admin-*',\n                        subpagepattern = NULL\n                      WHERE pagetypepattern = 'admin'");
        /// my-index
        $DB->execute("UPDATE {block_instances} SET\n                        contextid = (\n                            SELECT {context}.id\n                            FROM {context}\n                            JOIN {user} ON instanceid = {user}.id AND contextlevel = " . CONTEXT_USER . "\n                            WHERE {user}.id = pageid\n                        ),\n                        pagetypepattern = 'my-index',\n                        subpagepattern = NULL\n                      WHERE pagetypepattern = 'my-index'");
        /// tag-index
        $DB->execute("UPDATE {block_instances} SET\n                        contextid = " . $syscontext->id . ",\n                        pagetypepattern = 'tag-index',\n                        subpagepattern = pageid\n                      WHERE pagetypepattern = 'tag-index'");
        /// blog-view
        $DB->execute("UPDATE {block_instances} SET\n                        contextid = (\n                            SELECT {context}.id\n                            FROM {context}\n                            JOIN {user} ON instanceid = {user}.id AND contextlevel = " . CONTEXT_USER . "\n                            WHERE {user}.id = pageid\n                        ),\n                        pagetypepattern = 'blog-index',\n                        subpagepattern = NULL\n                      WHERE pagetypepattern = 'blog-view'");
        /// mod-xxx-view
        $moduleswithblocks = array('chat', 'data', 'lesson', 'quiz', 'dimdim', 'game', 'wiki', 'oublog');
        foreach ($moduleswithblocks as $modname) {
            if (!$dbman->table_exists($modname)) {
                continue;
            }
            $DB->execute("UPDATE {block_instances} SET\n                            contextid = (\n                                SELECT {context}.id\n                                FROM {context}\n                                JOIN {course_modules} ON instanceid = {course_modules}.id AND contextlevel = " . CONTEXT_MODULE . "\n                                JOIN {modules} ON {modules}.id = {course_modules}.module AND {modules}.name = '{$modname}'\n                                JOIN {{$modname}} ON {course_modules}.instance = {{$modname}}.id\n                                WHERE {{$modname}}.id = pageid\n                            ),\n                            pagetypepattern = 'blog-index',\n                            subpagepattern = NULL\n                          WHERE pagetypepattern = 'blog-view'");
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009050613);
    }
    if ($oldversion < 2009050614) {
        /// fill in any missing contextids with a dummy value, so we can add the not-null constraint.
        $DB->execute("UPDATE {block_instances} SET contextid = 0 WHERE contextid IS NULL");
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009050614);
    }
    if ($oldversion < 2009050615) {
        $table = new xmldb_table('block_instances');
        /// Arrived here, any block_instances record without blockname is one
        /// orphan block coming from 1.9. Just delete them. MDL-22503
        $DB->delete_records_select('block_instances', 'blockname IS NULL');
        /// Changing nullability of field blockname on table block_instances to not null
        $field = new xmldb_field('blockname', XMLDB_TYPE_CHAR, '40', null, XMLDB_NOTNULL, null, null, 'id');
        $dbman->change_field_notnull($table, $field);
        /// Changing nullability of field contextid on table block_instances to not null
        $field = new xmldb_field('contextid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null, 'blockname');
        $dbman->change_field_notnull($table, $field);
        /// Changing nullability of field showinsubcontexts on table block_instances to not null
        $field = new xmldb_field('showinsubcontexts', XMLDB_TYPE_INTEGER, '4', null, XMLDB_NOTNULL, null, null, 'contextid');
        $dbman->change_field_notnull($table, $field);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009050615);
    }
    if ($oldversion < 2009050616) {
        /// Add exiting sticky blocks.
        $blocks = $DB->get_records('block');
        $syscontext = get_context_instance(CONTEXT_SYSTEM);
        $newregions = array('l' => 'side-pre', 'r' => 'side-post', 'c' => 'course-view-top');
        $stickyblocks = $DB->get_recordset('block_pinned_old');
        foreach ($stickyblocks as $stickyblock) {
            // Only if the block exists (avoid orphaned sticky blocks)
            if (!isset($blocks[$stickyblock->blockid]) || empty($blocks[$stickyblock->blockid]->name)) {
                continue;
            }
            $newblock = new stdClass();
            $newblock->blockname = $blocks[$stickyblock->blockid]->name;
            $newblock->contextid = $syscontext->id;
            $newblock->showinsubcontexts = 1;
            switch ($stickyblock->pagetype) {
                case 'course-view':
                    $newblock->pagetypepattern = 'course-view-*';
                    break;
                default:
                    $newblock->pagetypepattern = $stickyblock->pagetype;
            }
            $newblock->defaultregion = $newregions[$stickyblock->position];
            $newblock->defaultweight = $stickyblock->weight;
            $newblock->configdata = $stickyblock->configdata;
            $newblock->visible = 1;
            $DB->insert_record('block_instances', $newblock);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009050616);
    }
    if ($oldversion < 2009050617) {
        /// Define table block_positions to be created
        $table = new xmldb_table('block_positions');
        /// Adding fields to table block_positions
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('blockinstanceid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('contextid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('pagetype', XMLDB_TYPE_CHAR, '64', null, XMLDB_NOTNULL, null, null);
        $table->add_field('subpage', XMLDB_TYPE_CHAR, '16', null, XMLDB_NOTNULL, null, null);
        $table->add_field('visible', XMLDB_TYPE_INTEGER, '4', null, XMLDB_NOTNULL, null, null);
        $table->add_field('region', XMLDB_TYPE_CHAR, '16', null, XMLDB_NOTNULL, null, null);
        $table->add_field('weight', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        /// Adding keys to table block_positions
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('blockinstanceid', XMLDB_KEY_FOREIGN, array('blockinstanceid'), 'block_instances', array('id'));
        $table->add_key('contextid', XMLDB_KEY_FOREIGN, array('contextid'), 'context', array('id'));
        /// Adding indexes to table block_positions
        $table->add_index('blockinstanceid-contextid-pagetype-subpage', XMLDB_INDEX_UNIQUE, array('blockinstanceid', 'contextid', 'pagetype', 'subpage'));
        /// Conditionally launch create table for block_positions
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009050617);
    }
    if ($oldversion < 2009050618) {
        /// And block instances with visible = 0, copy that information to block_positions
        $DB->execute("INSERT INTO {block_positions} (blockinstanceid, contextid, pagetype, subpage, visible, region, weight)\n                SELECT bi.id, bi.contextid,\n                       CASE WHEN bi.pagetypepattern = 'course-view-*'\n                           THEN (SELECT " . $DB->sql_concat("'course-view-'", 'c.format') . "\n                                   FROM {course} c\n                                   JOIN {context} ctx ON c.id = ctx.instanceid\n                                  WHERE ctx.id = bi.contextid)\n                           ELSE bi.pagetypepattern END,\n                       CASE WHEN bi.subpagepattern IS NULL\n                           THEN '" . $DB->sql_empty() . "'\n                           ELSE bi.subpagepattern END,\n                       0, bi.defaultregion, bi.defaultweight\n                  FROM {block_instances} bi\n                 WHERE bi.visible = 0 AND bi.pagetypepattern <> 'admin-*' AND bi.pagetypepattern IS NOT NULL");
        // note: MDL-25031 all block instances should have a pagetype pattern, NULL is not allowed,
        //       if we manage to find out how NULLs get there we should fix them before this step
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009050618);
    }
    if ($oldversion < 2009050619) {
        $table = new xmldb_table('block_instances');
        /// Define field blockid to be dropped from block_instances
        $field = new xmldb_field('blockid');
        if ($dbman->field_exists($table, $field)) {
            /// Before dropping the field, drop dependent indexes
            $index = new xmldb_index('blockid', XMLDB_INDEX_NOTUNIQUE, array('blockid'));
            if ($dbman->index_exists($table, $index)) {
                /// Launch drop index blockid
                $dbman->drop_index($table, $index);
            }
            $dbman->drop_field($table, $field);
        }
        /// Define field pageid to be dropped from block_instances
        $field = new xmldb_field('pageid');
        if ($dbman->field_exists($table, $field)) {
            /// Before dropping the field, drop dependent indexes
            $index = new xmldb_index('pageid', XMLDB_INDEX_NOTUNIQUE, array('pageid'));
            if ($dbman->index_exists($table, $index)) {
                /// Launch drop index pageid
                $dbman->drop_index($table, $index);
            }
            $dbman->drop_field($table, $field);
        }
        /// Define field visible to be dropped from block_instances
        $field = new xmldb_field('visible');
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009050619);
    }
    if ($oldversion < 2009051200) {
        /// Let's check the status of mandatory mnet_host records, fixing them
        /// and moving "orphan" users to default localhost record. MDL-16879
        echo $OUTPUT->notification('Fixing mnet records, this may take a while...', 'notifysuccess');
        upgrade_fix_incorrect_mnethostids();
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009051200);
    }
    if ($oldversion < 2009051700) {
        /// migrate editor settings
        if (empty($CFG->htmleditor)) {
            set_config('texteditors', 'textarea');
        } else {
            set_config('texteditors', 'tinymce,textarea');
        }
        unset_config('htmleditor');
        unset_config('defaulthtmleditor');
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009051700);
    }
    /// Repeat 2009050607 upgrade step, which Petr commented out because of XMLDB
    /// stupidity, so lots of people will have missed.
    if ($oldversion < 2009061600) {
        /// Changing precision of field defaultregion on table block_instances to (16)
        $table = new xmldb_table('block_instances');
        $field = new xmldb_field('defaultregion', XMLDB_TYPE_CHAR, '16', null, XMLDB_NOTNULL, null, null, 'configdata');
        /// Launch change of precision for field defaultregion
        $dbman->change_field_precision($table, $field);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009061600);
    }
    if ($oldversion < 2009061702) {
        // standardizing plugin names
        if ($configs = $DB->get_records_select('config_plugins', "plugin LIKE 'quizreport_%'")) {
            foreach ($configs as $config) {
                unset_config($config->name, $config->plugin);
                /// unset old config
                $config->plugin = str_replace('quizreport_', 'quiz_', $config->plugin);
                set_config($config->name, $config->value, $config->plugin);
                /// set new config
            }
        }
        unset($configs);
        upgrade_main_savepoint(true, 2009061702);
    }
    if ($oldversion < 2009061703) {
        // standardizing plugin names
        if ($configs = $DB->get_records_select('config_plugins', "plugin LIKE 'assignment_type_%'")) {
            foreach ($configs as $config) {
                unset_config($config->name, $config->plugin);
                /// unset old config
                $config->plugin = str_replace('assignment_type_', 'assignment_', $config->plugin);
                set_config($config->name, $config->value, $config->plugin);
                /// set new config
            }
        }
        unset($configs);
        upgrade_main_savepoint(true, 2009061703);
    }
    if ($oldversion < 2009061704) {
        // change component string in capability records to new "_" format
        if ($caps = $DB->get_records('capabilities')) {
            foreach ($caps as $cap) {
                $cap->component = str_replace('/', '_', $cap->component);
                $DB->update_record('capabilities', $cap);
            }
        }
        unset($caps);
        upgrade_main_savepoint(true, 2009061704);
    }
    if ($oldversion < 2009063000) {
        // upgrade format of _with_advanced settings - quiz only
        // note: this can be removed later, not needed for upgrades from 1.9.x
        if ($quiz = get_config('quiz')) {
            foreach ($quiz as $name => $value) {
                if (strpos($name, 'fix_') !== 0) {
                    continue;
                }
                $newname = substr($name, 4) . '_adv';
                set_config($newname, $value, 'quiz');
                unset_config($name, 'quiz');
            }
        }
        upgrade_main_savepoint(true, 2009063000);
    }
    if ($oldversion < 2009071000) {
        /// Rename field contextid on table block_instances to parentcontextid
        $table = new xmldb_table('block_instances');
        $field = new xmldb_field('contextid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null, 'blockname');
        /// Launch rename field parentcontextid
        $dbman->rename_field($table, $field, 'parentcontextid');
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009071000);
    }
    if ($oldversion < 2009071600) {
        /// Define field summaryformat to be added to post
        $table = new xmldb_table('post');
        $field = new xmldb_field('summaryformat', XMLDB_TYPE_INTEGER, '2', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'format');
        /// Conditionally launch add field summaryformat
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009071600);
    }
    if ($oldversion < 2009072400) {
        /// Define table comments to be created
        $table = new xmldb_table('comments');
        /// Adding fields to table comments
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('contextid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('commentarea', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('itemid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('content', XMLDB_TYPE_TEXT, 'small', null, XMLDB_NOTNULL, null, null);
        $table->add_field('format', XMLDB_TYPE_INTEGER, '2', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        /// Adding keys to table comments
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Conditionally launch create table for comments
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009072400);
    }
    /**
     * This upgrade is to set up the new navigation blocks that have been developed
     * as part of Moodle 2.0
     * Now I [Sam Hemelryk] hit a conundrum while exploring how to go about this
     * as not only do we want to install the new blocks but we also want to set up
     * default instances of them, and at the same time remove instances of the blocks
     * that were/will-be outmoded by the two new navigation blocks.
     * After talking it through with Tim Hunt {@link http://moodle.org/mod/cvsadmin/view.php?conversationid=3112}
     * we decided that the best way to go about this was to put the bulk of the
     * upgrade operation into core upgrade `here` but to let the plugins block
     * still install the blocks.
     * This leaves one hairy end in that we will create block_instances within the
     * DB before the blocks themselves are created within the DB
     */
    if ($oldversion < 2009082800) {
        echo $OUTPUT->notification(get_string('navigationupgrade', 'admin'));
        // Get the system context so we can set the block instances to it
        $syscontext = get_context_instance(CONTEXT_SYSTEM);
        // An array to contain the new block instances we will create
        $newblockinstances = array('globalnavigation' => new stdClass(), 'settingsnavigation' => new stdClass());
        // The new global navigation block instance as a stdClass
        $newblockinstances['globalnavigation']->blockname = 'global_navigation_tree';
        $newblockinstances['globalnavigation']->parentcontextid = $syscontext->id;
        // System context
        $newblockinstances['globalnavigation']->showinsubcontexts = true;
        // Show absolutely everywhere
        $newblockinstances['globalnavigation']->pagetypepattern = '*';
        // Thats right everywhere
        $newblockinstances['globalnavigation']->subpagetypepattern = null;
        $newblockinstances['globalnavigation']->defaultregion = BLOCK_POS_LEFT;
        $newblockinstances['globalnavigation']->defaultweight = -10;
        // Try make this first
        $newblockinstances['globalnavigation']->configdata = '';
        // The new settings navigation block instance as a stdClass
        $newblockinstances['settingsnavigation']->blockname = 'settings_navigation_tree';
        $newblockinstances['settingsnavigation']->parentcontextid = $syscontext->id;
        $newblockinstances['settingsnavigation']->showinsubcontexts = true;
        $newblockinstances['settingsnavigation']->pagetypepattern = '*';
        $newblockinstances['settingsnavigation']->subpagetypepattern = null;
        $newblockinstances['settingsnavigation']->defaultregion = BLOCK_POS_LEFT;
        $newblockinstances['settingsnavigation']->defaultweight = -9;
        // Try make this second
        $newblockinstances['settingsnavigation']->configdata = '';
        // Blocks that are outmoded and for whom the bells will toll... by which I
        // mean we will delete all instances of
        $outmodedblocks = array('participants', 'admin_tree', 'activity_modules', 'admin', 'course_list');
        $outmodedblocksstring = '\'' . join('\',\'', $outmodedblocks) . '\'';
        unset($outmodedblocks);
        // Retrieve the block instance id's and parent contexts, so we can join them an GREATLY
        // cut down the number of delete queries we will need to run
        $allblockinstances = $DB->get_recordset_select('block_instances', 'blockname IN (' . $outmodedblocksstring . ')', array(), '', 'id, parentcontextid');
        $contextids = array();
        $instanceids = array();
        // Iterate through all block instances
        foreach ($allblockinstances as $blockinstance) {
            if (!in_array($blockinstance->parentcontextid, $contextids)) {
                $contextids[] = $blockinstance->parentcontextid;
                // If we have over 1000 contexts clean them up and reset the array
                // this ensures we don't hit any nasty memory limits or such
                if (count($contextids) > 1000) {
                    upgrade_cleanup_unwanted_block_contexts($contextids);
                    $contextids = array();
                }
            }
            if (!in_array($blockinstance->id, $instanceids)) {
                $instanceids[] = $blockinstance->id;
                // If we have more than 1000 block instances now remove all block positions
                // and empty the array
                if (count($contextids) > 1000) {
                    $instanceidstring = join(',', $instanceids);
                    $DB->delete_records_select('block_positions', 'blockinstanceid IN (' . $instanceidstring . ')');
                    $instanceids = array();
                }
            }
        }
        upgrade_cleanup_unwanted_block_contexts($contextids);
        $instanceidstring = join(',', $instanceids);
        $DB->delete_records_select('block_positions', 'blockinstanceid IN (' . $instanceidstring . ')');
        unset($allblockinstances);
        unset($contextids);
        unset($instanceids);
        unset($instanceidstring);
        // Now remove the actual block instance
        $DB->delete_records_select('block_instances', 'blockname IN (' . $outmodedblocksstring . ')');
        unset($outmodedblocksstring);
        // Insert the new block instances. Remember they have not been installed yet
        // however this should not be a problem
        foreach ($newblockinstances as $blockinstance) {
            $blockinstance->id = $DB->insert_record('block_instances', $blockinstance);
            // Ensure the block context is created.
            get_context_instance(CONTEXT_BLOCK, $blockinstance->id);
        }
        unset($newblockinstances);
        upgrade_main_savepoint(true, 2009082800);
        // The end of the navigation upgrade
    }
    if ($oldversion < 2009100602) {
        /// Define table external_functions to be created
        $table = new xmldb_table('external_functions');
        /// Adding fields to table external_functions
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('name', XMLDB_TYPE_CHAR, '200', null, XMLDB_NOTNULL, null, null);
        $table->add_field('classname', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null);
        $table->add_field('methodname', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null);
        $table->add_field('classpath', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        $table->add_field('component', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null);
        /// Adding keys to table external_functions
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Adding indexes to table external_functions
        $table->add_index('name', XMLDB_INDEX_UNIQUE, array('name'));
        /// Launch create table for external_functions
        $dbman->create_table($table);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009100602);
    }
    if ($oldversion < 2009100603) {
        /// Define table external_services to be created
        $table = new xmldb_table('external_services');
        /// Adding fields to table external_services
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('name', XMLDB_TYPE_CHAR, '200', null, XMLDB_NOTNULL, null, null);
        $table->add_field('enabled', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('requiredcapability', XMLDB_TYPE_CHAR, '150', null, null, null, null);
        $table->add_field('restrictedusers', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('component', XMLDB_TYPE_CHAR, '100', null, null, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        /// Adding keys to table external_services
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Adding indexes to table external_services
        $table->add_index('name', XMLDB_INDEX_UNIQUE, array('name'));
        /// Launch create table for external_services
        $dbman->create_table($table);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009100603);
    }
    if ($oldversion < 2009100604) {
        /// Define table external_services_functions to be created
        $table = new xmldb_table('external_services_functions');
        /// Adding fields to table external_services_functions
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('externalserviceid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('functionname', XMLDB_TYPE_CHAR, '200', null, XMLDB_NOTNULL, null, null);
        /// Adding keys to table external_services_functions
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('externalserviceid', XMLDB_KEY_FOREIGN, array('externalserviceid'), 'external_services', array('id'));
        /// Launch create table for external_services_functions
        $dbman->create_table($table);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009100604);
    }
    if ($oldversion < 2009100605) {
        /// Define table external_services_users to be created
        $table = new xmldb_table('external_services_users');
        /// Adding fields to table external_services_users
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('externalserviceid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('iprestriction', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        $table->add_field('validuntil', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        /// Adding keys to table external_services_users
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('externalserviceid', XMLDB_KEY_FOREIGN, array('externalserviceid'), 'external_services', array('id'));
        $table->add_key('userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        /// Launch create table for external_services_users
        $dbman->create_table($table);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009100605);
    }
    if ($oldversion < 2009102600) {
        /// Define table external_tokens to be created
        $table = new xmldb_table('external_tokens');
        /// Adding fields to table external_tokens
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('token', XMLDB_TYPE_CHAR, '128', null, XMLDB_NOTNULL, null, null);
        $table->add_field('tokentype', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('externalserviceid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('sid', XMLDB_TYPE_CHAR, '128', null, null, null, null);
        $table->add_field('contextid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('creatorid', XMLDB_TYPE_INTEGER, '20', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '1');
        $table->add_field('iprestriction', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        $table->add_field('validuntil', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('lastaccess', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        /// Adding keys to table external_tokens
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        $table->add_key('externalserviceid', XMLDB_KEY_FOREIGN, array('externalserviceid'), 'external_services', array('id'));
        $table->add_key('contextid', XMLDB_KEY_FOREIGN, array('contextid'), 'context', array('id'));
        $table->add_key('creatorid', XMLDB_KEY_FOREIGN, array('creatorid'), 'user', array('id'));
        /// Launch create table for external_tokens
        $dbman->create_table($table);
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009102600);
    }
    if ($oldversion < 2009103000) {
        /// Define table blog_association to be created
        $table = new xmldb_table('blog_association');
        /// Adding fields to table blog_association
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('contextid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('blogid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        /// Adding keys to table blog_association
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('contextid', XMLDB_KEY_FOREIGN, array('contextid'), 'context', array('id'));
        $table->add_key('blogid', XMLDB_KEY_FOREIGN, array('blogid'), 'post', array('id'));
        /// Conditionally launch create table for blog_association
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Define table blog_external to be created
        $table = new xmldb_table('blog_external');
        /// Adding fields to table blog_external
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('name', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('description', XMLDB_TYPE_TEXT, 'small', null, null, null, null);
        $table->add_field('url', XMLDB_TYPE_TEXT, 'small', null, XMLDB_NOTNULL, null, null);
        $table->add_field('filtertags', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        $table->add_field('failedlastsync', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('timefetched', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        /// Adding keys to table blog_external
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        /// Conditionally launch create table for blog_external
        if ($dbman->table_exists($table)) {
            // Delete the existing one first (comes from early dev version)
            $dbman->drop_table($table);
        }
        $dbman->create_table($table);
        // now inform admins that some settings require attention after upgrade
        if (($CFG->bloglevel == BLOG_COURSE_LEVEL || $CFG->bloglevel == BLOG_GROUP_LEVEL) && empty($CFG->bloglevel_upgrade_complete)) {
            echo $OUTPUT->notification(get_string('bloglevelupgradenotice', 'admin'));
            $site = get_site();
            $a = new StdClass();
            $a->sitename = $site->fullname;
            $a->fixurl = "{$CFG->wwwroot}/{$CFG->admin}/bloglevelupgrade.php";
            $subject = get_string('bloglevelupgrade', 'admin');
            $description = get_string('bloglevelupgradedescription', 'admin', $a);
            // can not use messaging here because it is not configured yet!
            upgrade_log(UPGRADE_LOG_NOTICE, null, $subject, $description);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2009103000);
    }
    if ($oldversion < 2009110400) {
        // list of tables where we need to add new format field and convert texts
        $extendtables = array('course' => 'summary', 'course_categories' => 'description', 'course_categories' => 'description', 'course_request' => 'summary', 'grade_outcomes' => 'description', 'groups' => 'description', 'groupings' => 'description', 'scale' => 'description', 'user_info_field' => 'description', 'user_info_field' => 'defaultdata', 'user_info_data' => 'data');
        foreach ($extendtables as $tablestr => $fieldstr) {
            $formatfieldstr = $fieldstr . 'format';
            $table = new xmldb_table($tablestr);
            $field = new xmldb_field($formatfieldstr, XMLDB_TYPE_INTEGER, '2', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', $fieldstr);
            // Check that the field doesn't already exists
            if (!$dbman->field_exists($table, $field)) {
                // Add the new field
                $dbman->add_field($table, $field);
            }
            if ($CFG->texteditors !== 'textarea') {
                $rs = $DB->get_recordset($tablestr, array($formatfieldstr => FORMAT_MOODLE), '', "id,{$fieldstr},{$formatfieldstr}");
                foreach ($rs as $rec) {
                    $rec->{$fieldstr} = text_to_html($rec->{$fieldstr}, false, false, true);
                    $rec->{$formatfieldstr} = FORMAT_HTML;
                    $DB->update_record($tablestr, $rec);
                    upgrade_set_timeout();
                }
                $rs->close();
                unset($rs);
            }
        }
        unset($rec);
        unset($extendtables);
        upgrade_main_savepoint(true, 2009110400);
    }
    if ($oldversion < 2009110401) {
        $table = new xmldb_table('user');
        // Change the precision of the description field first up.
        // This may grow!
        $field = new xmldb_field('description', XMLDB_TYPE_TEXT, 'big', null, null, null, null, 'url');
        $dbman->change_field_precision($table, $field);
        $field = new xmldb_field('descriptionformat', XMLDB_TYPE_INTEGER, '2', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'description');
        // Check that the field doesn't already exists
        if (!$dbman->field_exists($table, $field)) {
            // Add the new field
            $dbman->add_field($table, $field);
        }
        if ($CFG->texteditors !== 'textarea') {
            $rs = $DB->get_recordset('user', array('descriptionformat' => FORMAT_MOODLE, 'deleted' => 0, 'htmleditor' => 1), '', "id,description,descriptionformat");
            foreach ($rs as $rec) {
                $rec->description = text_to_html($rec->description, false, false, true);
                $rec->descriptionformat = FORMAT_HTML;
                $DB->update_record('user', $rec);
                upgrade_set_timeout();
            }
            $rs->close();
        }
        upgrade_main_savepoint(true, 2009110401);
    }
    if ($oldversion < 2009112400) {
        if (empty($CFG->passwordsaltmain)) {
            $subject = get_string('check_passwordsaltmain_name', 'report_security');
            $description = get_string('check_passwordsaltmain_warning', 'report_security');
            upgrade_log(UPGRADE_LOG_NOTICE, null, $subject, $description);
        }
        upgrade_main_savepoint(true, 2009112400);
    }
    if ($oldversion < 2010011200) {
        $table = new xmldb_table('grade_categories');
        $field = new xmldb_field('hidden', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, 0, 'timemodified');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        upgrade_main_savepoint(true, 2010011200);
    }
    if ($oldversion < 2010012500) {
        upgrade_fix_incorrect_mnethostids();
        upgrade_main_savepoint(true, 2010012500);
    }
    if ($oldversion < 2010012600) {
        // do stuff to the mnet table
        $table = new xmldb_table('mnet_rpc');
        $field = new xmldb_field('parent_type', XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, null, 'xmlrpc_path');
        $dbman->rename_field($table, $field, 'plugintype');
        $field = new xmldb_field('parent', XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, null, 'xmlrpc_path');
        $dbman->rename_field($table, $field, 'pluginname');
        $field = new xmldb_field('filename', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null, 'profile');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('classname', XMLDB_TYPE_CHAR, '150', null, null, null, null, 'filename');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('static', XMLDB_TYPE_INTEGER, '1', null, null, null, null, 'classname');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010012600);
    }
    if ($oldversion < 2010012900) {
        /// Define table mnet_remote_rpc to be created
        $table = new xmldb_table('mnet_remote_rpc');
        /// Adding fields to table mnet_remote_rpc
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('functionname', XMLDB_TYPE_CHAR, '40', null, XMLDB_NOTNULL, null, null);
        $table->add_field('xmlrpcpath', XMLDB_TYPE_CHAR, '80', null, XMLDB_NOTNULL, null, null);
        /// Adding keys to table mnet_remote_rpc
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Conditionally launch create table for mnet_remote_rpc
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Define table mnet_remote_service2rpc to be created
        $table = new xmldb_table('mnet_remote_service2rpc');
        /// Adding fields to table mnet_remote_service2rpc
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('serviceid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('rpcid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        /// Adding keys to table mnet_remote_service2rpc
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Adding indexes to table mnet_remote_service2rpc
        $table->add_index('rpcid_serviceid', XMLDB_INDEX_UNIQUE, array('rpcid', 'serviceid'));
        /// Conditionally launch create table for mnet_remote_service2rpc
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Rename field function_name on table mnet_rpc to functionname
        $table = new xmldb_table('mnet_rpc');
        $field = new xmldb_field('function_name', XMLDB_TYPE_CHAR, '40', null, XMLDB_NOTNULL, null, null, 'id');
        /// Launch rename field function_name
        $dbman->rename_field($table, $field, 'functionname');
        /// Rename field xmlrpc_path on table mnet_rpc to xmlrpcpath
        $table = new xmldb_table('mnet_rpc');
        $field = new xmldb_field('xmlrpc_path', XMLDB_TYPE_CHAR, '80', null, XMLDB_NOTNULL, null, null, 'function_name');
        /// Launch rename field xmlrpc_path
        $dbman->rename_field($table, $field, 'xmlrpcpath');
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010012900);
    }
    if ($oldversion < 2010012901) {
        /// Define field plugintype to be added to mnet_remote_rpc
        $table = new xmldb_table('mnet_remote_rpc');
        $field = new xmldb_field('plugintype', XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, null, 'xmlrpcpath');
        /// Conditionally launch add field plugintype
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Define field pluginname to be added to mnet_remote_rpc
        $field = new xmldb_field('pluginname', XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, null, 'plugintype');
        /// Conditionally launch add field pluginname
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010012901);
    }
    if ($oldversion < 2010012902) {
        /// Define field enabled to be added to mnet_remote_rpc
        $table = new xmldb_table('mnet_remote_rpc');
        $field = new xmldb_field('enabled', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, null, 'pluginname');
        /// Conditionally launch add field enabled
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010012902);
    }
    /// MDL-17863. Increase the portno column length on mnet_host to handle any port number
    if ($oldversion < 2010020100) {
        /// Changing precision of field portno on table mnet_host to (5)
        $table = new xmldb_table('mnet_host');
        $field = new xmldb_field('portno', XMLDB_TYPE_INTEGER, '5', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'transport');
        /// Launch change of precision for field portno
        $dbman->change_field_precision($table, $field);
        upgrade_main_savepoint(true, 2010020100);
    }
    if ($oldversion < 2010020300) {
        /// Define field timecreated to be added to user
        $table = new xmldb_table('user');
        $field = new xmldb_field('timecreated', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'trackforums');
        if (!$dbman->field_exists($table, $field)) {
            /// Launch add field timecreated
            $dbman->add_field($table, $field);
            $DB->execute("UPDATE {user} SET timecreated = firstaccess");
            $sql = "UPDATE {user} SET timecreated = " . time() . " where timecreated = 0";
            $DB->execute($sql);
        }
        upgrade_main_savepoint(true, 2010020300);
    }
    // MDL-21407. Trim leading spaces from default tex latexpreamble causing problems under some confs
    if ($oldversion < 2010020301) {
        if ($preamble = $CFG->filter_tex_latexpreamble) {
            $preamble = preg_replace('/^ +/m', '', $preamble);
            set_config('filter_tex_latexpreamble', $preamble);
        }
        upgrade_main_savepoint(true, 2010020301);
    }
    if ($oldversion < 2010021400) {
        /// Changes to modinfo mean we need to rebuild course cache
        require_once $CFG->dirroot . '/course/lib.php';
        rebuild_course_cache(0, true);
        upgrade_main_savepoint(true, 2010021400);
    }
    if ($oldversion < 2010021800) {
        $DB->set_field('mnet_application', 'sso_jump_url', '/auth/mnet/jump.php', array('name' => 'moodle'));
        upgrade_main_savepoint(true, 2010021800);
    }
    if ($oldversion < 2010031900) {
        // regeneration of sessions is always enabled, no need for this setting any more
        unset_config('regenloginsession');
        upgrade_main_savepoint(true, 2010031900);
    }
    if ($oldversion < 2010033101.02) {
        /// Define table license to be created
        $table = new xmldb_table('license');
        /// Adding fields to table license
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('shortname', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        $table->add_field('fullname', XMLDB_TYPE_TEXT, 'small', null, null, null, null);
        $table->add_field('source', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        $table->add_field('enabled', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '1');
        $table->add_field('version', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');
        /// Adding keys to table license
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Conditionally launch create table for license
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        $active_licenses = array();
        $license = new stdClass();
        // add unknown license
        $license->shortname = 'unknown';
        $license->fullname = 'Unknown license';
        $license->source = '';
        $license->enabled = 1;
        $license->version = '2010033100';
        $active_licenses[] = $license->shortname;
        if ($record = $DB->get_record('license', array('shortname' => $license->shortname))) {
            if ($record->version < $license->version) {
                // update license record
                $license->enabled = $record->enabled;
                $license->id = $record->id;
                $DB->update_record('license', $license);
            }
        } else {
            $DB->insert_record('license', $license);
        }
        // add all rights reserved license
        $license->shortname = 'allrightsreserved';
        $license->fullname = 'All rights reserved';
        $license->source = 'http://en.wikipedia.org/wiki/All_rights_reserved';
        $license->enabled = 1;
        $license->version = '2010033100';
        $active_licenses[] = $license->shortname;
        if ($record = $DB->get_record('license', array('shortname' => $license->shortname))) {
            if ($record->version < $license->version) {
                // update license record
                $license->id = $record->id;
                $license->enabled = $record->enabled;
                $DB->update_record('license', $license);
            }
        } else {
            $DB->insert_record('license', $license);
        }
        // add public domain license
        $license->shortname = 'public';
        $license->fullname = 'Public Domain';
        $license->source = 'http://creativecommons.org/licenses/publicdomain/';
        $license->enabled = 1;
        $license->version = '2010033100';
        $active_licenses[] = $license->shortname;
        if ($record = $DB->get_record('license', array('shortname' => $license->shortname))) {
            if ($record->version < $license->version) {
                // update license record
                $license->enabled = $record->enabled;
                $license->id = $record->id;
                $DB->update_record('license', $license);
            }
        } else {
            $DB->insert_record('license', $license);
        }
        // add creative commons license
        $license->shortname = 'cc';
        $license->fullname = 'Creative Commons';
        $license->source = 'http://creativecommons.org/licenses/by/3.0/';
        $license->enabled = 1;
        $license->version = '2010033100';
        $active_licenses[] = $license->shortname;
        if ($record = $DB->get_record('license', array('shortname' => $license->shortname))) {
            if ($record->version < $license->version) {
                // update license record
                $license->enabled = $record->enabled;
                $license->id = $record->id;
                $DB->update_record('license', $license);
            }
        } else {
            $DB->insert_record('license', $license);
        }
        // add creative commons no derivs license
        $license->shortname = 'cc-nd';
        $license->fullname = 'Creative Commons - NoDerivs';
        $license->source = 'http://creativecommons.org/licenses/by-nd/3.0/';
        $license->enabled = 1;
        $license->version = '2010033100';
        $active_licenses[] = $license->shortname;
        if ($record = $DB->get_record('license', array('shortname' => $license->shortname))) {
            if ($record->version < $license->version) {
                // update license record
                $license->enabled = $record->enabled;
                $license->id = $record->id;
                $DB->update_record('license', $license);
            }
        } else {
            $DB->insert_record('license', $license);
        }
        // add creative commons no commercial no derivs license
        $license->shortname = 'cc-nc-nd';
        $license->fullname = 'Creative Commons - No Commercial NoDerivs';
        $license->source = 'http://creativecommons.org/licenses/by-nc-nd/3.0/';
        $license->enabled = 1;
        $license->version = '2010033100';
        $active_licenses[] = $license->shortname;
        if ($record = $DB->get_record('license', array('shortname' => $license->shortname))) {
            if ($record->version < $license->version) {
                // update license record
                $license->enabled = $record->enabled;
                $license->id = $record->id;
                $DB->update_record('license', $license);
            }
        } else {
            $DB->insert_record('license', $license);
        }
        // add creative commons no commercial
        $license->shortname = 'cc-nc-nd';
        $license->shortname = 'cc-nc';
        $license->fullname = 'Creative Commons - No Commercial';
        $license->source = 'http://creativecommons.org/licenses/by-nd/3.0/';
        $license->enabled = 1;
        $license->version = '2010033100';
        $active_licenses[] = $license->shortname;
        if ($record = $DB->get_record('license', array('shortname' => $license->shortname))) {
            if ($record->version < $license->version) {
                // update license record
                $license->enabled = $record->enabled;
                $license->id = $record->id;
                $DB->update_record('license', $license);
            }
        } else {
            $DB->insert_record('license', $license);
        }
        // add creative commons no commercial sharealike
        $license->shortname = 'cc-nc-sa';
        $license->fullname = 'Creative Commons - No Commercial ShareAlike';
        $license->source = 'http://creativecommons.org/licenses/by-nc-sa/3.0/';
        $license->enabled = 1;
        $license->version = '2010033100';
        $active_licenses[] = $license->shortname;
        if ($record = $DB->get_record('license', array('shortname' => $license->shortname))) {
            if ($record->version < $license->version) {
                // update license record
                $license->enabled = $record->enabled;
                $license->id = $record->id;
                $DB->update_record('license', $license);
            }
        } else {
            $DB->insert_record('license', $license);
        }
        // add creative commons sharealike
        $license->shortname = 'cc-sa';
        $license->fullname = 'Creative Commons - ShareAlike';
        $license->source = 'http://creativecommons.org/licenses/by-sa/3.0/';
        $license->enabled = 1;
        $license->version = '2010033100';
        $active_licenses[] = $license->shortname;
        if ($record = $DB->get_record('license', array('shortname' => $license->shortname))) {
            if ($record->version < $license->version) {
                // update license record
                $license->enabled = $record->enabled;
                $license->id = $record->id;
                $DB->update_record('license', $license);
            }
        } else {
            $DB->insert_record('license', $license);
        }
        set_config('licenses', implode(',', $active_licenses));
        /// set site default license
        set_config('sitedefaultlicense', 'allrightsreserved');
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010033101.02);
    }
    if ($oldversion < 2010033102.0) {
        // rename course view capability to participate
        $params = array('viewcap' => 'moodle/course:view', 'participatecap' => 'moodle/course:participate');
        $sql = "UPDATE {role_capabilities} SET capability = :participatecap WHERE capability = :viewcap";
        $DB->execute($sql, $params);
        $sql = "UPDATE {capabilities} SET name = :participatecap WHERE name = :viewcap";
        $DB->execute($sql, $params);
        // note: the view capability is readded again at the end of upgrade, but with different meaning
        upgrade_main_savepoint(true, 2010033102.0);
    }
    if ($oldversion < 2010033102.01) {
        // Define field archetype to be added to role table
        $table = new xmldb_table('role');
        $field = new xmldb_field('archetype', XMLDB_TYPE_CHAR, '30', null, XMLDB_NOTNULL, null, null, 'sortorder');
        $dbman->add_field($table, $field);
        upgrade_main_savepoint(true, 2010033102.01);
    }
    if ($oldversion < 2010033102.02) {
        // Set archetype for existing roles and change admin role to manager role
        $sql = "SELECT r.*, rc.capability\n                  FROM {role} r\n                  JOIN {role_capabilities} rc ON rc.roleid = r.id\n                 WHERE rc.contextid = :syscontextid AND rc.capability LIKE :legacycaps\n              ORDER BY r.id";
        $params = array('syscontextid' => SYSCONTEXTID, 'legacycaps' => 'moodle/legacy:%');
        $substart = strlen('moodle/legacy:');
        $roles = $DB->get_recordset_sql($sql, $params);
        // in theory could be multiple legacy flags in one role
        foreach ($roles as $role) {
            $role->archetype = substr($role->capability, $substart);
            unset($role->capability);
            if ($role->archetype === 'admin') {
                $i = '';
                if ($DB->record_exists('role', array('shortname' => 'manager')) or $DB->record_exists('role', array('name' => get_string('manager', 'role')))) {
                    $i = 2;
                    while ($DB->record_exists('role', array('shortname' => 'manager' . $i)) or $DB->record_exists('role', array('name' => get_string('manager', 'role') . $i))) {
                        $i++;
                    }
                }
                $role->archetype = 'manager';
                if ($role->shortname === 'admin') {
                    $role->shortname = 'manager' . $i;
                    $role->name = get_string('manager', 'role') . $i;
                    $role->description = get_string('managerdescription', 'role');
                }
            }
            $DB->update_record('role', $role);
        }
        $roles->close();
        upgrade_main_savepoint(true, 2010033102.02);
    }
    if ($oldversion < 2010033102.03) {
        // Now pick site admins (===have manager role assigned at the system context)
        // and store them in the new $CFG->siteadmins setting as comma separated list
        $sql = "SELECT ra.id, ra.userid\n                  FROM {role_assignments} ra\n                  JOIN {role} r ON r.id = ra.roleid\n                  JOIN {user} u ON u.id = ra.userid\n                 WHERE ra.contextid = :syscontext AND r.archetype = 'manager' AND u.deleted = 0\n              ORDER BY ra.id";
        $ras = $DB->get_records_sql($sql, array('syscontext' => SYSCONTEXTID));
        $admins = array();
        foreach ($ras as $ra) {
            $admins[$ra->userid] = $ra->userid;
            set_config('siteadmins', implode(',', $admins));
            // better to save it repeatedly, we do need at least one admin
            $DB->delete_records('role_assignments', array('id' => $ra->id));
        }
        upgrade_main_savepoint(true, 2010033102.03);
    }
    if ($oldversion < 2010033102.04) {
        // clean up the manager roles
        $managers = $DB->get_records('role', array('archetype' => 'manager'));
        foreach ($managers as $manager) {
            // now sanitize the capabilities and overrides
            $DB->delete_records('role_capabilities', array('capability' => 'moodle/site:config', 'roleid' => $manager->id));
            // only site admins may configure servers
            // note: doanything and legacy caps are deleted automatically, they get moodle/course:view later at the end of the upgrade
            // remove manager role assignments bellow the course context level - admin role was never intended for activities and blocks,
            // the problem is that those assignments would not be visible after upgrade and old style admins in activities make no sense anyway
            $DB->delete_records_select('role_assignments', "roleid = :manager AND contextid IN (SELECT id FROM {context} WHERE contextlevel > 50)", array('manager' => $manager->id));
            // allow them to assign all roles except default user, guest and frontpage - users get these roles automatically on the fly when needed
            $DB->delete_records('role_allow_assign', array('roleid' => $manager->id));
            $roles = $DB->get_records_sql("SELECT * FROM {role} WHERE archetype <> 'user' AND archetype <> 'guest' AND archetype <> 'frontpage'");
            foreach ($roles as $role) {
                $record = (object) array('roleid' => $manager->id, 'allowassign' => $role->id);
                $DB->insert_record('role_allow_assign', $record);
            }
            // allow them to override all roles
            $DB->delete_records('role_allow_override', array('roleid' => $manager->id));
            $roles = $DB->get_records_sql("SELECT * FROM {role}");
            foreach ($roles as $role) {
                $record = (object) array('roleid' => $manager->id, 'allowoverride' => $role->id);
                $DB->insert_record('role_allow_override', $record);
            }
            // allow them to switch to all following roles
            $DB->delete_records('role_allow_switch', array('roleid' => $manager->id));
            $roles = $DB->get_records_sql("SELECT * FROM {role} WHERE archetype IN ('student', 'teacher', 'editingteacher')");
            foreach ($roles as $role) {
                $record = (object) array('roleid' => $manager->id, 'allowswitch' => $role->id);
                $DB->insert_record('role_allow_switch', $record);
            }
        }
        upgrade_main_savepoint(true, 2010033102.04);
    }
    if ($oldversion < 2010033102.05) {
        // remove course:view from all roles that are not used for enrolment, it does NOT belong there because it really means user is enrolled!
        $noenrolroles = $DB->get_records_select('role', "archetype IN ('guest', 'user', 'manager', 'coursecreator', 'frontpage')");
        foreach ($noenrolroles as $role) {
            $DB->delete_records('role_capabilities', array('roleid' => $role->id, 'capability' => 'moodle/course:participate'));
        }
        upgrade_main_savepoint(true, 2010033102.05);
    }
    if ($oldversion < 2010033102.06) {
        // make sure there is nothing weird in default user role
        if (!empty($CFG->defaultuserroleid)) {
            if ($role = $DB->get_record('role', array('id' => $CFG->defaultuserroleid))) {
                if ($role->archetype !== '' and $role->archetype !== 'user') {
                    upgrade_log(UPGRADE_LOG_NOTICE, null, 'Default authenticated user role (defaultuserroleid) value is invalid, setting cleared.');
                    unset_config('defaultuserroleid');
                }
            } else {
                unset_config('defaultuserroleid');
            }
        }
        upgrade_main_savepoint(true, 2010033102.06);
    }
    if ($oldversion < 2010033102.07) {
        if (!empty($CFG->displayloginfailures) and $CFG->displayloginfailures === 'teacher') {
            upgrade_log(UPGRADE_LOG_NOTICE, null, 'Displaying of login failuters to teachers is not supported any more.');
            unset_config('displayloginfailures');
        }
        upgrade_main_savepoint(true, 2010033102.07);
    }
    if ($oldversion < 2010033102.08) {
        // make sure there are no problems in default guest role settings
        if (!empty($CFG->guestroleid)) {
            if ($role = $DB->get_record('role', array('id' => $CFG->guestroleid))) {
                if ($role->archetype !== '' and $role->archetype !== 'guest') {
                    upgrade_log(UPGRADE_LOG_NOTICE, null, 'Default guest role (guestroleid) value is invalid, setting cleared.');
                    unset_config('guestroleid');
                }
            } else {
                upgrade_log(UPGRADE_LOG_NOTICE, null, 'Role specified in Default guest role (guestroleid) does not exist, setting cleared.');
                unset_config('guestroleid');
            }
        }
        // remove all roles of the guest account - the only way to change it is to override the guest role, sorry
        // the guest account gets all the role assignments on the fly which works fine in has_capability(),
        $DB->delete_records_select('role_assignments', "userid IN (SELECT id FROM {user} WHERE username = '******')");
        upgrade_main_savepoint(true, 2010033102.08);
    }
    /// New table for storing which roles can be assigned in which contexts.
    if ($oldversion < 2010033102.09) {
        /// Define table role_context_levels to be created
        $table = new xmldb_table('role_context_levels');
        /// Adding fields to table role_context_levels
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('roleid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('contextlevel', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        /// Adding keys to table role_context_levels
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('contextlevel-roleid', XMLDB_KEY_UNIQUE, array('contextlevel', 'roleid'));
        $table->add_key('roleid', XMLDB_KEY_FOREIGN, array('roleid'), 'role', array('id'));
        /// Conditionally launch create table for role_context_levels
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010033102.09);
    }
    if ($oldversion < 2010033102.1) {
        // Now populate the role_context_levels table with the default values
        // NOTE: do not use accesslib methods here
        $rolecontextlevels = array();
        $defaults = array('manager' => array(CONTEXT_SYSTEM, CONTEXT_COURSECAT, CONTEXT_COURSE), 'coursecreator' => array(CONTEXT_SYSTEM, CONTEXT_COURSECAT), 'editingteacher' => array(CONTEXT_COURSE, CONTEXT_MODULE), 'teacher' => array(CONTEXT_COURSE, CONTEXT_MODULE), 'student' => array(CONTEXT_COURSE, CONTEXT_MODULE), 'guest' => array(), 'user' => array(), 'frontpage' => array());
        $roles = $DB->get_records('role', array(), '', 'id, archetype');
        foreach ($roles as $role) {
            if (isset($defaults[$role->archetype])) {
                $rolecontextlevels[$role->id] = $defaults[$role->archetype];
            }
        }
        // add roles without archetypes, it may contain weird things, but we can not fix them
        list($narsql, $params) = $DB->get_in_or_equal(array_keys($defaults), SQL_PARAMS_NAMED, 'ar', false);
        $sql = "SELECT DISTINCT ra.roleid, con.contextlevel\n                  FROM {role_assignments} ra\n                  JOIN {context} con ON ra.contextid = con.id\n                  JOIN {role} r ON r.id = ra.roleid\n                 WHERE r.archetype {$narsql}";
        $existingrolecontextlevels = $DB->get_recordset_sql($sql, $params);
        foreach ($existingrolecontextlevels as $rcl) {
            if (!isset($rolecontextlevels[$rcl->roleid])) {
                $rolecontextlevels[$rcl->roleid] = array();
            }
            $rolecontextlevels[$rcl->roleid][] = $rcl->contextlevel;
        }
        $existingrolecontextlevels->close();
        // Put the data into the database.
        $rcl = new stdClass();
        foreach ($rolecontextlevels as $roleid => $contextlevels) {
            $rcl->roleid = $roleid;
            foreach ($contextlevels as $level) {
                $rcl->contextlevel = $level;
                $DB->insert_record('role_context_levels', $rcl, false);
            }
        }
        // release memory!!
        unset($roles);
        unset($defaults);
        unset($rcl);
        unset($existingrolecontextlevels);
        unset($rolecontextlevels);
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010033102.1);
    }
    if ($oldversion < 2010040700) {
        // migrate old groupings --> groupmembersonly setting
        if (isset($CFG->enablegroupings)) {
            set_config('enablegroupmembersonly', $CFG->enablegroupings);
            unset_config('enablegroupings');
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010040700);
    }
    if ($oldversion < 2010040900) {
        // Changing the default of field lang on table user to good old "en"
        $table = new xmldb_table('user');
        $field = new xmldb_field('lang', XMLDB_TYPE_CHAR, '30', null, XMLDB_NOTNULL, null, 'en', 'country');
        // Launch change of default for field lang
        $dbman->change_field_default($table, $field);
        // update main site lang
        if (strpos($CFG->lang, '_utf8') !== false) {
            $lang = str_replace('_utf8', '', $CFG->lang);
            set_config('lang', $lang);
        }
        // tweak langlist
        if (!empty($CFG->langlist)) {
            $langs = explode(',', $CFG->langlist);
            foreach ($langs as $key => $lang) {
                $lang = str_replace('_utf8', '', $lang);
                $langs[$key] = $lang;
            }
            set_config('langlist', implode(',', $langs));
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010040900);
    }
    if ($oldversion < 2010040901) {
        // Remove "_utf8" suffix from all langs in user table
        $langs = $DB->get_records_sql("SELECT DISTINCT lang FROM {user} WHERE lang LIKE ?", array('%_utf8'));
        foreach ($langs as $lang => $unused) {
            $newlang = str_replace('_utf8', '', $lang);
            $sql = "UPDATE {user} SET lang = :newlang WHERE lang = :lang";
            $DB->execute($sql, array('newlang' => $newlang, 'lang' => $lang));
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010040901);
    }
    if ($oldversion < 2010041301) {
        $sql = "UPDATE {block} SET name=? WHERE name=?";
        $DB->execute($sql, array('navigation', 'global_navigation_tree'));
        $DB->execute($sql, array('settings', 'settings_navigation_tree'));
        $sql = "UPDATE {block_instances} SET blockname=? WHERE blockname=?";
        $DB->execute($sql, array('navigation', 'global_navigation_tree'));
        $DB->execute($sql, array('settings', 'settings_navigation_tree'));
        upgrade_main_savepoint(true, 2010041301);
    }
    if ($oldversion < 2010042100) {
        /// Define table backup_controllers to be created
        $table = new xmldb_table('backup_controllers');
        /// Adding fields to table backup_controllers
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('backupid', XMLDB_TYPE_CHAR, '32', null, XMLDB_NOTNULL, null, null);
        $table->add_field('type', XMLDB_TYPE_CHAR, '6', null, XMLDB_NOTNULL, null, null);
        $table->add_field('itemid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('format', XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, null);
        $table->add_field('interactive', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('purpose', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('status', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('execution', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('executiontime', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('checksum', XMLDB_TYPE_CHAR, '32', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('controller', XMLDB_TYPE_TEXT, 'big', null, XMLDB_NOTNULL, null, null);
        /// Adding keys to table backup_controllers
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('backupid_uk', XMLDB_KEY_UNIQUE, array('backupid'));
        $table->add_key('userid_fk', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        /// Adding indexes to table backup_controllers
        $table->add_index('typeitem_ix', XMLDB_INDEX_NOTUNIQUE, array('type', 'itemid'));
        /// Conditionally launch create table for backup_controllers
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Define table backup_ids_template to be created
        $table = new xmldb_table('backup_ids_template');
        /// Adding fields to table backup_ids_template
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('backupid', XMLDB_TYPE_CHAR, '32', null, XMLDB_NOTNULL, null, null);
        $table->add_field('itemname', XMLDB_TYPE_CHAR, '30', null, XMLDB_NOTNULL, null, null);
        $table->add_field('itemid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('parentitemid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        /// Adding keys to table backup_ids_template
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('backupid_itemname_itemid_uk', XMLDB_KEY_UNIQUE, array('backupid', 'itemname', 'itemid'));
        /// Adding indexes to table backup_ids_template
        $table->add_index('backupid_parentitemid_ix', XMLDB_INDEX_NOTUNIQUE, array('backupid', 'itemname', 'parentitemid'));
        /// Conditionally launch create table for backup_controllers
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010042100);
    }
    if ($oldversion < 2010042301) {
        $table = new xmldb_table('course_sections');
        $field = new xmldb_field('name', XMLDB_TYPE_CHAR, '255', null, null, null, null, 'section');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        upgrade_main_savepoint(true, 2010042301);
    }
    if ($oldversion < 2010042302) {
        // Define table cohort to be created
        $table = new xmldb_table('cohort');
        // Adding fields to table cohort
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('contextid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('name', XMLDB_TYPE_CHAR, '254', null, XMLDB_NOTNULL, null, null);
        $table->add_field('idnumber', XMLDB_TYPE_CHAR, '100', null, null, null, null);
        $table->add_field('description', XMLDB_TYPE_TEXT, 'small', null, null, null, null);
        $table->add_field('descriptionformat', XMLDB_TYPE_INTEGER, '2', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('component', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        // Adding keys to table cohort
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('context', XMLDB_KEY_FOREIGN, array('contextid'), 'context', array('id'));
        // Conditionally launch create table for cohort
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        upgrade_main_savepoint(true, 2010042302);
    }
    if ($oldversion < 2010042303) {
        // Define table cohort_members to be created
        $table = new xmldb_table('cohort_members');
        // Adding fields to table cohort_members
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('cohortid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('timeadded', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        // Adding keys to table cohort_members
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('cohortid', XMLDB_KEY_FOREIGN, array('cohortid'), 'cohort', array('id'));
        $table->add_key('userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        // Adding indexes to table cohort_members
        $table->add_index('cohortid-userid', XMLDB_INDEX_UNIQUE, array('cohortid', 'userid'));
        // Conditionally launch create table for cohort_members
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010042303);
    }
    if ($oldversion < 2010042800) {
        //drop the previously created ratings table
        $table = new xmldb_table('ratings');
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        //create the rating table (replaces module specific rating implementations)
        $table = new xmldb_table('rating');
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        /// Adding fields to table rating
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('contextid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('itemid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('scaleid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('rating', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        /// Adding keys to table rating
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('contextid', XMLDB_KEY_FOREIGN, array('contextid'), 'context', array('id'));
        $table->add_key('userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        /// Adding indexes to table rating
        $table->add_index('itemid', XMLDB_INDEX_NOTUNIQUE, array('itemid'));
        /// Create table for ratings
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        upgrade_main_savepoint(true, 2010042800);
    }
    if ($oldversion < 2010042801) {
        // migrating old comments block content
        $DB->execute("UPDATE {comments}\n                         SET contextid = (SELECT parentcontextid\n                                            FROM {block_instances}\n                                           WHERE id = {comments}.itemid AND blockname = 'comments'),\n                             commentarea = 'page_comments',\n                             itemid = 0\n                       WHERE commentarea = 'block_comments'\n                             AND itemid != 0\n                             AND EXISTS (SELECT 'x'\n                                           FROM {block_instances}\n                                          WHERE id = {comments}.itemid\n                                                AND blockname = 'comments')");
        // remove all orphaned record
        $DB->delete_records('comments', array('commentarea' => 'block_comments'));
        upgrade_main_savepoint(true, 2010042801);
    }
    if ($oldversion < 2010042802) {
        // Change backup_controllers->type to varchar10 (recreate dep. index)
        /// Define index typeitem_ix (not unique) to be dropped form backup_controllers
        $table = new xmldb_table('backup_controllers');
        $index = new xmldb_index('typeitem_ix', XMLDB_INDEX_NOTUNIQUE, array('type', 'itemid'));
        /// Conditionally launch drop index typeitem_ix
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        /// Changing precision of field type on table backup_controllers to (10)
        $table = new xmldb_table('backup_controllers');
        $field = new xmldb_field('type', XMLDB_TYPE_CHAR, '10', null, XMLDB_NOTNULL, null, null, 'backupid');
        /// Launch change of precision for field type
        $dbman->change_field_precision($table, $field);
        /// Define index typeitem_ix (not unique) to be added to backup_controllers
        $table = new xmldb_table('backup_controllers');
        $index = new xmldb_index('typeitem_ix', XMLDB_INDEX_NOTUNIQUE, array('type', 'itemid'));
        /// Conditionally launch add index typeitem_ix
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010042802);
    }
    if ($oldversion < 2010043000) {
        // Adding new course completion feature
        /// Add course completion tables
        /// Define table course_completion_aggr_methd to be created
        $table = new xmldb_table('course_completion_aggr_methd');
        /// Adding fields to table course_completion_aggr_methd
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('course', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('criteriatype', XMLDB_TYPE_INTEGER, '20', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('method', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('value', XMLDB_TYPE_NUMBER, '10, 5', null, null, null, null);
        /// Adding keys to table course_completion_aggr_methd
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Adding indexes to table course_completion_aggr_methd
        $table->add_index('course', XMLDB_INDEX_NOTUNIQUE, array('course'));
        $table->add_index('criteriatype', XMLDB_INDEX_NOTUNIQUE, array('criteriatype'));
        /// Conditionally launch create table for course_completion_aggr_methd
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Define table course_completion_criteria to be created
        $table = new xmldb_table('course_completion_criteria');
        /// Adding fields to table course_completion_criteria
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('course', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('criteriatype', XMLDB_TYPE_INTEGER, '20', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('module', XMLDB_TYPE_CHAR, '100', null, null, null, null);
        $table->add_field('moduleinstance', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('courseinstance', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('enrolperiod', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('timeend', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('gradepass', XMLDB_TYPE_NUMBER, '10, 5', null, null, null, null);
        $table->add_field('role', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        /// Adding keys to table course_completion_criteria
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Adding indexes to table course_completion_criteria
        $table->add_index('course', XMLDB_INDEX_NOTUNIQUE, array('course'));
        /// Conditionally launch create table for course_completion_criteria
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Define table course_completion_crit_compl to be created
        $table = new xmldb_table('course_completion_crit_compl');
        /// Adding fields to table course_completion_crit_compl
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('course', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('criteriaid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('gradefinal', XMLDB_TYPE_NUMBER, '10, 5', null, null, null, null);
        $table->add_field('unenroled', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('deleted', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('timecompleted', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        /// Adding keys to table course_completion_crit_compl
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Adding indexes to table course_completion_crit_compl
        $table->add_index('userid', XMLDB_INDEX_NOTUNIQUE, array('userid'));
        $table->add_index('course', XMLDB_INDEX_NOTUNIQUE, array('course'));
        $table->add_index('criteriaid', XMLDB_INDEX_NOTUNIQUE, array('criteriaid'));
        $table->add_index('timecompleted', XMLDB_INDEX_NOTUNIQUE, array('timecompleted'));
        /// Conditionally launch create table for course_completion_crit_compl
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Define table course_completion_notify to be created
        $table = new xmldb_table('course_completion_notify');
        /// Adding fields to table course_completion_notify
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('course', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('role', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('message', XMLDB_TYPE_TEXT, 'small', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timesent', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        /// Adding keys to table course_completion_notify
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Adding indexes to table course_completion_notify
        $table->add_index('course', XMLDB_INDEX_NOTUNIQUE, array('course'));
        /// Conditionally launch create table for course_completion_notify
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Define table course_completions to be created
        $table = new xmldb_table('course_completions');
        /// Adding fields to table course_completions
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('course', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('deleted', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('timenotified', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('timeenrolled', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('timestarted', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('timecompleted', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('reaggregate', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        /// Adding keys to table course_completions
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Adding indexes to table course_completions
        $table->add_index('userid', XMLDB_INDEX_NOTUNIQUE, array('userid'));
        $table->add_index('course', XMLDB_INDEX_NOTUNIQUE, array('course'));
        $table->add_index('timecompleted', XMLDB_INDEX_NOTUNIQUE, array('timecompleted'));
        /// Conditionally launch create table for course_completions
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Add cols to course table
        /// Define field enablecompletion to be added to course
        $table = new xmldb_table('course');
        $field = new xmldb_field('enablecompletion', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'defaultrole');
        /// Conditionally launch add field enablecompletion
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Define field completionstartonenrol to be added to course
        $field = new xmldb_field('completionstartonenrol', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'enablecompletion');
        /// Conditionally launch add field completionstartonenrol
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Define field completionnotify to be added to course
        $field = new xmldb_field('completionnotify', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'enablecompletion');
        /// Conditionally launch add field completionnotify
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        upgrade_main_savepoint(true, 2010043000);
    }
    if ($oldversion < 2010043001) {
        /// Define table registration_hubs to be created
        $table = new xmldb_table('registration_hubs');
        /// Adding fields to table registration_hubs
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('token', XMLDB_TYPE_CHAR, '40', null, XMLDB_NOTNULL, null, null);
        $table->add_field('hubname', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('huburl', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('confirmed', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        /// Adding keys to table registration_hubs
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Conditionally launch create table for registration_hubs
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010043001);
    }
    if ($oldversion < 2010050200) {
        /// Define table backup_logs to be created
        $table = new xmldb_table('backup_logs');
        /// Adding fields to table backup_logs
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('backupid', XMLDB_TYPE_CHAR, '32', null, XMLDB_NOTNULL, null, null);
        $table->add_field('loglevel', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('message', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        /// Adding keys to table backup_logs
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('backupid', XMLDB_KEY_FOREIGN, array('backupid'), 'backup_controllers', array('backupid'));
        /// Adding indexes to table backup_logs
        $table->add_index('backupid-id', XMLDB_INDEX_UNIQUE, array('backupid', 'id'));
        /// Conditionally launch create table for backup_logs
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Drop some old backup tables, not used anymore
        /// Define table backup_files to be dropped
        $table = new xmldb_table('backup_files');
        /// Conditionally launch drop table for backup_files
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        /// Define table backup_ids to be dropped
        $table = new xmldb_table('backup_ids');
        /// Conditionally launch drop table for backup_ids
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010050200);
    }
    if ($oldversion < 2010050403) {
        // my_pages for My Moodle and Public Profile pages
        /// Define table my_pages to be created
        $table = new xmldb_table('my_pages');
        /// Adding fields to table my_pages
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, 0);
        $table->add_field('name', XMLDB_TYPE_CHAR, '200', null, XMLDB_NOTNULL, null, null);
        $table->add_field('private', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '1');
        $table->add_field('sortorder', XMLDB_TYPE_INTEGER, '6', null, XMLDB_NOTNULL, null, '0');
        /// Adding keys to table my_pages
        $table->add_key('id', XMLDB_KEY_PRIMARY, array('id'));
        /// Adding indexes to table my_pages
        $table->add_index('useridprivate', XMLDB_INDEX_NOTUNIQUE, array('userid', 'private'));
        /// Conditionally launch create table for my_pages
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Add two lines of data into this new table.  These are the default pages.
        $mypage = new stdClass();
        $mypage->userid = NULL;
        $mypage->name = '__default';
        $mypage->private = 0;
        $mypage->sortorder = 0;
        if (!$DB->record_exists('my_pages', array('userid' => NULL, 'private' => 0))) {
            $DB->insert_record('my_pages', $mypage);
        }
        $mypage->private = 1;
        if (!$DB->record_exists('my_pages', array('userid' => NULL, 'private' => 1))) {
            $DB->insert_record('my_pages', $mypage);
        }
        /// This bit is a "illegal" hack, unfortunately, but there is not a better way to install default
        /// blocks right now, since the upgrade function need to be called after core AND plugins upgrade,
        /// and there is no such hook yet.  Sigh.
        if ($mypage = $DB->get_record('my_pages', array('userid' => NULL, 'private' => 1))) {
            if (!$DB->record_exists('block_instances', array('pagetypepattern' => 'my-index', 'parentcontextid' => SITEID, 'subpagepattern' => $mypage->id))) {
                // No default exist there yet, let's put a few into My Moodle so it's useful.
                $blockinstance = new stdClass();
                $blockinstance->parentcontextid = SYSCONTEXTID;
                $blockinstance->showinsubcontexts = 0;
                $blockinstance->pagetypepattern = 'my-index';
                $blockinstance->subpagepattern = $mypage->id;
                $blockinstance->configdata = '';
                $blockinstance->blockname = 'private_files';
                $blockinstance->defaultregion = 'side-post';
                $blockinstance->defaultweight = 0;
                $blockinstanceid = $DB->insert_record('block_instances', $blockinstance);
                get_context_instance(CONTEXT_BLOCK, $blockinstanceid);
                $blockinstance->blockname = 'online_users';
                $blockinstance->defaultregion = 'side-post';
                $blockinstance->defaultweight = 1;
                $blockinstanceid = $DB->insert_record('block_instances', $blockinstance);
                get_context_instance(CONTEXT_BLOCK, $blockinstanceid);
                $blockinstance->blockname = 'course_overview';
                $blockinstance->defaultregion = 'content';
                $blockinstance->defaultweight = 0;
                $blockinstanceid = $DB->insert_record('block_instances', $blockinstance);
                get_context_instance(CONTEXT_BLOCK, $blockinstanceid);
            }
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010050403);
    }
    if ($oldversion < 2010051500) {
        /// Fix a bad table name that existed for a few days in HEAD
        $table = new xmldb_table('published_courses');
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        /// Define table course_published to be created
        $table = new xmldb_table('course_published');
        /// Adding fields to table course_published
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('hubid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('courseid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('timepublished', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('enrollable', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '1');
        $table->add_field('hubcourseid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        /// Adding keys to table course_published
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Conditionally launch create table for course_published
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010051500);
    }
    if ($oldversion < 2010051600) {
        /// Delete the blocks completely.  All the contexts, instances etc were cleaned up above in 2009082800
        $DB->delete_records('block', array('name' => 'admin'));
        $DB->delete_records('block', array('name' => 'admin_tree'));
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010051600);
    }
    if ($oldversion < 2010051800) {
        // switching to userid in config settings because user names are not unique and reliable enough
        if (!empty($CFG->courserequestnotify) and $CFG->courserequestnotify !== '$@NONE@$' and $CFG->courserequestnotify !== '$@ALL@$') {
            list($where, $params) = $DB->get_in_or_equal(explode(',', $CFG->courserequestnotify));
            $params[] = $CFG->mnet_localhost_id;
            $users = $DB->get_fieldset_select('user', 'id', "username {$where} AND mnethostid = ?", $params);
            if ($users) {
                set_config('courserequestnotify', implode(',', $users));
            } else {
                set_config('courserequestnotify', '$@NONE@$');
            }
        }
        upgrade_main_savepoint(true, 2010051800);
    }
    if ($oldversion < 2010051801) {
        // Update the notifyloginfailures setting.
        if ($CFG->notifyloginfailures == 'mainadmin') {
            if ($admins = explode(',', $CFG->siteadmins)) {
                $adminid = reset($admins);
                set_config('notifyloginfailures', $adminid);
            } else {
                unset_config('notifyloginfailures');
                // let them choose
            }
            unset($admins);
        } else {
            if ($CFG->notifyloginfailures == 'alladmins') {
                set_config('notifyloginfailures', '$@ALL@$');
            } else {
                set_config('notifyloginfailures', '$@NONE@$');
            }
        }
        upgrade_main_savepoint(true, 2010051801);
    }
    if ($oldversion < 2010052100) {
        // Switch to html purifier as default cleaning engine - KSES is really very bad
        if (empty($CFG->enablehtmlpurifier)) {
            unset_config('enablehtmlpurifier');
        }
        upgrade_main_savepoint(true, 2010052100);
    }
    if ($oldversion < 2010052200) {
        // Define field legacyfiles to be added to course - just in case we are upgrading from PR1
        $table = new xmldb_table('course');
        $field = new xmldb_field('legacyfiles', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'maxbytes');
        // Conditionally launch add field legacyfiles
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
            // enable legacy files in all courses
            $DB->execute("UPDATE {course} SET legacyfiles = 2");
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010052200);
    }
    if ($oldversion < 2010052401) {
        /// Define field status to be added to course_published
        $table = new xmldb_table('course_published');
        $field = new xmldb_field('status', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, null, null, '0', 'hubcourseid');
        /// Conditionally launch add field status
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Define field timechecked to be added to course_published
        $table = new xmldb_table('course_published');
        $field = new xmldb_field('timechecked', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null, 'status');
        /// Conditionally launch add field timechecked
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010052401);
    }
    if ($oldversion < 2010052700) {
        /// Define field summaryformat to be added to course sections table
        $table = new xmldb_table('course_sections');
        $field = new xmldb_field('summaryformat', XMLDB_TYPE_INTEGER, '2', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'summary');
        /// Conditionally launch add field summaryformat
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $DB->set_field('course_sections', 'summaryformat', 1, array());
        // originally treated as HTML
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010052700);
    }
    if ($oldversion < 2010052800) {
        /// Changes to modinfo mean we need to rebuild course cache
        require_once $CFG->dirroot . '/course/lib.php';
        rebuild_course_cache(0, true);
        upgrade_main_savepoint(true, 2010052800);
    }
    if ($oldversion < 2010052801) {
        /// Define field sortorder to be added to files
        $table = new xmldb_table('files');
        $field = new xmldb_field('sortorder', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'timemodified');
        /// Conditionally launch add field sortorder
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010052801);
    }
    if ($oldversion < 2010061900.01) {
        // Define table enrol to be created
        $table = new xmldb_table('enrol');
        // Adding fields to table enrol
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('enrol', XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, null);
        $table->add_field('status', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('courseid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('sortorder', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('name', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        $table->add_field('enrolperiod', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, '0');
        $table->add_field('enrolstartdate', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, '0');
        $table->add_field('enrolenddate', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, '0');
        $table->add_field('expirynotify', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, null, null, '0');
        $table->add_field('expirythreshold', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, '0');
        $table->add_field('notifyall', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, null, null, '0');
        $table->add_field('password', XMLDB_TYPE_CHAR, '50', null, null, null, null);
        $table->add_field('cost', XMLDB_TYPE_CHAR, '20', null, null, null, null);
        $table->add_field('currency', XMLDB_TYPE_CHAR, '3', null, null, null, null);
        $table->add_field('roleid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, '0');
        $table->add_field('customint1', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('customint2', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('customint3', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('customint4', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('customchar1', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        $table->add_field('customchar2', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        $table->add_field('customdec1', XMLDB_TYPE_NUMBER, '12, 7', null, null, null, null);
        $table->add_field('customdec2', XMLDB_TYPE_NUMBER, '12, 7', null, null, null, null);
        $table->add_field('customtext1', XMLDB_TYPE_TEXT, 'big', null, null, null, null);
        $table->add_field('customtext2', XMLDB_TYPE_TEXT, 'big', null, null, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        // Adding keys to table enrol
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('courseid', XMLDB_KEY_FOREIGN, array('courseid'), 'course', array('id'));
        // Adding indexes to table enrol
        $table->add_index('enrol', XMLDB_INDEX_NOTUNIQUE, array('enrol'));
        // launch create table for enrol
        $dbman->create_table($table);
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010061900.01);
    }
    if ($oldversion < 2010061900.02) {
        // Define table course_participant to be created
        $table = new xmldb_table('user_enrolments');
        // Adding fields to table course_participant
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('status', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('enrolid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('timestart', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('timeend', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '2147483647');
        $table->add_field('modifierid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        // Adding keys to table course_participant
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('enrolid', XMLDB_KEY_FOREIGN, array('enrolid'), 'enrol', array('id'));
        $table->add_key('userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        $table->add_key('modifierid', XMLDB_KEY_FOREIGN, array('modifierid'), 'user', array('id'));
        // Adding indexes to table user_enrolments
        $table->add_index('enrolid-userid', XMLDB_INDEX_UNIQUE, array('enrolid', 'userid'));
        // Launch create table for course_participant
        $dbman->create_table($table);
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010061900.02);
    }
    if ($oldversion < 2010061900.03) {
        // Define field itemid to be added to role_assignments
        $table = new xmldb_table('role_assignments');
        $field = new xmldb_field('itemid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, 0, 'enrol');
        // Launch add field itemid
        $dbman->add_field($table, $field);
        // The new enrol plugins may assign one role several times in one context,
        // if we did not allow it we would have big problems with roles when unenrolling
        $table = new xmldb_table('role_assignments');
        $index = new xmldb_index('contextid-roleid-userid', XMLDB_INDEX_UNIQUE, array('contextid', 'roleid', 'userid'));
        // Conditionally launch drop index contextid-roleid-userid
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010061900.03);
    }
    if ($oldversion < 2010061900.04) {
        // there is no default course role any more, each enrol plugin has to handle it separately
        if (!empty($CFG->defaultcourseroleid)) {
            $sql = "UPDATE {course} SET defaultrole = :defaultrole WHERE defaultrole = 0";
            $params = array('defaultrole' => $CFG->defaultcourseroleid);
            $DB->execute($sql, $params);
        }
        unset_config('defaultcourseroleid');
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010061900.04);
    }
    if ($oldversion < 2010061900.05) {
        // make sure enrol settings make actually sense and tweak defaults a bit
        $sqlempty = $DB->sql_empty();
        // set course->enrol to default value so that other upgrade code is simpler
        $defaultenrol = empty($CFG->enrol) ? 'manual' : $CFG->enrol;
        $sql = "UPDATE {course} SET enrol = ? WHERE enrol = '{$sqlempty}'";
        $DB->execute($sql, array($defaultenrol));
        unset_config('enrol');
        if (!isset($CFG->enrol_plugins_enabled) or empty($CFG->enrol_plugins_enabled)) {
            set_config('enrol_plugins_enabled', 'manual');
        } else {
            $enabledplugins = explode(',', $CFG->enrol_plugins_enabled);
            $enabledplugins = array_unique($enabledplugins);
            set_config('enrol_plugins_enabled', implode(',', $enabledplugins));
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010061900.05);
    }
    if ($oldversion < 2010061900.06) {
        $sqlempty = $DB->sql_empty();
        $params = array('siteid' => SITEID);
        // enable manual in all courses
        $sql = "INSERT INTO {enrol} (enrol, status, courseid, sortorder, enrolperiod, expirynotify, expirythreshold, notifyall, roleid, timecreated, timemodified)\n                SELECT 'manual', 0, id, 0, enrolperiod, expirynotify, expirythreshold, notifystudents, defaultrole, timecreated, timemodified\n                  FROM {course}\n                 WHERE id <> :siteid";
        $DB->execute($sql, $params);
        // enable self enrol only when course enrollable
        $sql = "INSERT INTO {enrol} (enrol, status, courseid, sortorder, enrolperiod, enrolstartdate, enrolenddate, expirynotify, expirythreshold,\n                                     notifyall, password, roleid, timecreated, timemodified)\n                SELECT 'self', 0, id, 1, enrolperiod, enrolstartdate, enrolenddate, expirynotify, expirythreshold,\n                       notifystudents, password, defaultrole, timecreated, timemodified\n                  FROM {course}\n                 WHERE enrollable = 1 AND id <> :siteid";
        $DB->execute($sql, $params);
        // enable guest access if previously allowed - separately with or without password
        $sql = "INSERT INTO {enrol} (enrol, status, courseid, sortorder, timecreated, timemodified)\n                SELECT 'guest', 0, id, 2, timecreated, timemodified\n                  FROM {course}\n                 WHERE guest = 1 AND id <> :siteid";
        $DB->execute($sql, $params);
        $sql = "INSERT INTO {enrol} (enrol, status, courseid, sortorder, password, timecreated, timemodified)\n                SELECT 'guest', 0, id, 2, password, timecreated, timemodified\n                  FROM {course}\n                 WHERE guest = 2 and password <> '{$sqlempty}' AND id <> :siteid";
        $DB->execute($sql, $params);
        upgrade_main_savepoint(true, 2010061900.06);
    }
    if ($oldversion < 2010061900.07) {
        // now migrate old style "interactive" enrol plugins - we know them by looking into course.enrol
        $params = array('siteid' => SITEID);
        $enabledplugins = explode(',', $CFG->enrol_plugins_enabled);
        $usedplugins = $DB->get_fieldset_sql("SELECT DISTINCT enrol FROM {course}");
        foreach ($usedplugins as $plugin) {
            if ($plugin === 'manual') {
                continue;
            }
            $enabled = in_array($plugin, $enabledplugins) ? 0 : 1;
            // 0 means active, 1 disabled
            $sql = "INSERT INTO {enrol} (enrol, status, courseid, sortorder, enrolperiod, enrolstartdate, enrolenddate, expirynotify, expirythreshold,\n                                         notifyall, password, cost, currency, roleid, timecreated, timemodified)\n                    SELECT enrol, {$enabled}, id, 4, enrolperiod, enrolstartdate, enrolenddate, expirynotify, expirythreshold,\n                           notifystudents, password, cost, currency, defaultrole, timecreated, timemodified\n                      FROM {course}\n                     WHERE enrol = :plugin AND id <> :siteid";
            $params['plugin'] = $plugin;
            $DB->execute($sql, $params);
        }
        upgrade_main_savepoint(true, 2010061900.07);
    }
    if ($oldversion < 2010061900.08) {
        // now migrate the rest - these plugins are not in course.enrol, instead we just look for suspicious role assignments,
        // unfortunately old enrol plugins were doing sometimes weird role assignments :-(
        // enabled
        $enabledplugins = explode(',', $CFG->enrol_plugins_enabled);
        list($sqlenabled, $params) = $DB->get_in_or_equal($enabledplugins, SQL_PARAMS_NAMED, 'ena');
        $params['siteid'] = SITEID;
        $sql = "INSERT INTO {enrol} (enrol, status, courseid, sortorder, enrolperiod, enrolstartdate, enrolenddate, expirynotify, expirythreshold,\n                                     notifyall, password, cost, currency, roleid, timecreated, timemodified)\n                SELECT DISTINCT ra.enrol, 0, c.id, 5, c.enrolperiod, c.enrolstartdate, c.enrolenddate, c.expirynotify, c.expirythreshold,\n                       c.notifystudents, c.password, c.cost, c.currency, c.defaultrole, c.timecreated, c.timemodified\n                  FROM {course} c\n                  JOIN {context} ctx ON (ctx.instanceid = c.id AND ctx.contextlevel = 50)\n                  JOIN {role_assignments} ra ON (ra.contextid = ctx.id)\n                 WHERE c.id <> :siteid AND ra.enrol {$sqlenabled}";
        $processed = $DB->get_fieldset_sql("SELECT DISTINCT enrol FROM {enrol}");
        if ($processed) {
            list($sqlnotprocessed, $params2) = $DB->get_in_or_equal($processed, SQL_PARAMS_NAMED, 'np', false);
            $params = array_merge($params, $params2);
            $sql = "{$sql} AND ra.enrol {$sqlnotprocessed}";
        }
        $DB->execute($sql, $params);
        // disabled
        $params = array('siteid' => SITEID);
        $sql = "INSERT INTO {enrol} (enrol, status, courseid, sortorder, enrolperiod, enrolstartdate, enrolenddate, expirynotify, expirythreshold,\n                                     notifyall, password, cost, currency, roleid, timecreated, timemodified)\n                SELECT DISTINCT ra.enrol, 1, c.id, 5, c.enrolperiod, c.enrolstartdate, c.enrolenddate, c.expirynotify, c.expirythreshold,\n                       c.notifystudents, c.password, c.cost, c.currency, c.defaultrole, c.timecreated, c.timemodified\n                  FROM {course} c\n                  JOIN {context} ctx ON (ctx.instanceid = c.id AND ctx.contextlevel = 50)\n                  JOIN {role_assignments} ra ON (ra.contextid = ctx.id)\n                 WHERE c.id <> :siteid";
        $processed = $DB->get_fieldset_sql("SELECT DISTINCT enrol FROM {enrol}");
        if ($processed) {
            list($sqlnotprocessed, $params2) = $DB->get_in_or_equal($processed, SQL_PARAMS_NAMED, 'np', false);
            $params = array_merge($params, $params2);
            $sql = "{$sql} AND ra.enrol {$sqlnotprocessed}";
        }
        $DB->execute($sql, $params);
        upgrade_main_savepoint(true, 2010061900.08);
    }
    if ($oldversion < 2010061900.09) {
        // unfortunately there may be still some leftovers
        // after reconfigured, uninstalled or borked enrol plugins,
        // unfortunately this may be a bit slow - but there should not be many of these
        upgrade_set_timeout();
        $sqlempty = $DB->sql_empty();
        $sql = "SELECT DISTINCT c.id AS courseid, ra.enrol, c.timecreated, c.timemodified\n                  FROM {course} c\n                  JOIN {context} ctx ON (ctx.instanceid = c.id AND ctx.contextlevel = 50)\n                  JOIN {role_assignments} ra ON (ra.contextid = ctx.id AND ra.enrol <> '{$sqlempty}')\n             LEFT JOIN {enrol} e ON (e.courseid = c.id AND e.enrol = ra.enrol)\n                 WHERE c.id <> :siteid AND e.id IS NULL";
        $params = array('siteid' => SITEID);
        $rs = $DB->get_recordset_sql($sql, $params);
        foreach ($rs as $enrol) {
            upgrade_set_timeout();
            $enrol->status = 1;
            // better disable them
            $DB->insert_record('enrol', $enrol);
        }
        $rs->close();
        upgrade_main_savepoint(true, 2010061900.09);
    }
    if ($oldversion < 2010061900.1) {
        // migrate existing setup of meta courses, ignore records referencing invalid courses
        $sql = "INSERT INTO {enrol} (enrol, status, courseid, sortorder, customint1)\n                SELECT 'meta', 0, cm.parent_course, 5, cm.child_course\n                  FROM {course_meta} cm\n                  JOIN {course} p ON p.id = cm.parent_course\n                  JOIN {course} c ON c.id = cm.child_course";
        $DB->execute($sql);
        upgrade_main_savepoint(true, 2010061900.1);
    }
    if ($oldversion < 2010061900.11) {
        // nuke any old role assignments+enrolments in previous meta courses, we have to start from scratch
        $select = "SELECT ctx.id\n                     FROM {context} ctx\n                     JOIN {course} c ON (c.id = ctx.instanceid AND ctx.contextlevel = 50 AND c.metacourse = 1)";
        $DB->delete_records_select('role_assignments', "contextid IN ({$select}) AND enrol = 'manual'");
        // course_meta to be dropped - we use enrol_meta plugin instead now
        $table = new xmldb_table('course_meta');
        // Launch drop table for course_meta
        $dbman->drop_table($table);
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010061900.11);
    }
    if ($oldversion < 2010061900.12) {
        // finally remove all obsolete fields from the course table - yay!
        // all the information was migrated to the enrol table
        // Define field guest to be dropped from course
        $table = new xmldb_table('course');
        $field = new xmldb_field('guest');
        // Conditionally launch drop field guest
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Define field password to be dropped from course
        $table = new xmldb_table('course');
        $field = new xmldb_field('password');
        // Conditionally launch drop field password
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Define field enrolperiod to be dropped from course
        $table = new xmldb_table('course');
        $field = new xmldb_field('enrolperiod');
        // Conditionally launch drop field enrolperiod
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Define field cost to be dropped from course
        $table = new xmldb_table('course');
        $field = new xmldb_field('cost');
        // Conditionally launch drop field cost
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Define field currency to be dropped from course
        $table = new xmldb_table('course');
        $field = new xmldb_field('currency');
        // Conditionally launch drop field currency
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Define field metacourse to be dropped from course
        $table = new xmldb_table('course');
        $field = new xmldb_field('metacourse');
        // Conditionally launch drop field metacourse
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Define field expirynotify to be dropped from course
        $table = new xmldb_table('course');
        $field = new xmldb_field('expirynotify');
        // Conditionally launch drop field expirynotify
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Define field expirythreshold to be dropped from course
        $table = new xmldb_table('course');
        $field = new xmldb_field('expirythreshold');
        // Conditionally launch drop field expirythreshold
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Define field notifystudents to be dropped from course
        $table = new xmldb_table('course');
        $field = new xmldb_field('notifystudents');
        // Conditionally launch drop field notifystudents
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Define field enrollable to be dropped from course
        $table = new xmldb_table('course');
        $field = new xmldb_field('enrollable');
        // Conditionally launch drop field enrollable
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Define field enrolstartdate to be dropped from course
        $table = new xmldb_table('course');
        $field = new xmldb_field('enrolstartdate');
        // Conditionally launch drop field enrolstartdate
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Define field enrolenddate to be dropped from course
        $table = new xmldb_table('course');
        $field = new xmldb_field('enrolenddate');
        // Conditionally launch drop field enrolenddate
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Define field enrol to be dropped from course
        $table = new xmldb_table('course');
        $field = new xmldb_field('enrol');
        // Conditionally launch drop field enrol
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Define field defaultrole to be dropped from course
        $table = new xmldb_table('course');
        $field = new xmldb_field('defaultrole');
        // Conditionally launch drop field defaultrole
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        upgrade_main_savepoint(true, 2010061900.12);
    }
    if ($oldversion < 2010061900.13) {
        // Define field visibleold to be added to course_categories
        $table = new xmldb_table('course_categories');
        $field = new xmldb_field('visibleold', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '1', 'visible');
        // Launch add field visibleold
        $dbman->add_field($table, $field);
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010061900.13);
    }
    if ($oldversion < 2010061900.14) {
        // keep previous visible state
        $DB->execute("UPDATE {course_categories} SET visibleold = visible");
        // make sure all subcategories of hidden categories are hidden too, do not rely on category path yet
        $sql = "SELECT c.id\n                  FROM {course_categories} c\n                  JOIN {course_categories} pc ON (pc.id = c.parent AND pc.visible = 0)\n                 WHERE c.visible = 1";
        while ($categories = $DB->get_records_sql($sql)) {
            foreach ($categories as $cat) {
                upgrade_set_timeout();
                $DB->set_field('course_categories', 'visible', 0, array('id' => $cat->id));
            }
        }
        upgrade_main_savepoint(true, 2010061900.14);
    }
    if ($oldversion < 2010061900.15) {
        // Define field visibleold to be added to course
        $table = new xmldb_table('course');
        $field = new xmldb_field('visibleold', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '1', 'visible');
        // Launch add field visibleold
        $dbman->add_field($table, $field);
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010061900.15);
    }
    if ($oldversion < 2010061900.16) {
        // keep previous visible state
        $DB->execute("UPDATE {course} SET visibleold = visible");
        // make sure all courses in hidden categories are hidden
        $DB->execute("UPDATE {course} SET visible = 0 WHERE category IN (SELECT id FROM {course_categories} WHERE visible = 0)");
        upgrade_main_savepoint(true, 2010061900.16);
    }
    if ($oldversion < 2010061900.2) {
        // now set up the enrolments - look for roles with course:participate only at course context - the category enrolments are synchronised later by archetype and new capability
        $syscontext = get_context_instance(CONTEXT_SYSTEM);
        $params = array('syscontext' => $syscontext->id, 'participate' => 'moodle/course:participate');
        $roles = $DB->get_fieldset_sql("SELECT DISTINCT roleid FROM {role_capabilities} WHERE contextid = :syscontext AND capability = :participate AND permission = 1", $params);
        if ($roles) {
            list($sqlroles, $params) = $DB->get_in_or_equal($roles, SQL_PARAMS_NAMED, 'r');
            $sql = "INSERT INTO {user_enrolments} (status, enrolid, userid, timestart, timeend, modifierid, timecreated, timemodified)\n\n                    SELECT 0, e.id, ra.userid, MIN(ra.timestart), MIN(ra.timeend), 0, MIN(ra.timemodified), MAX(ra.timemodified)\n                      FROM {role_assignments} ra\n                      JOIN {context} c ON (c.id = ra.contextid AND c.contextlevel = 50)\n                      JOIN {enrol} e ON (e.enrol = ra.enrol AND e.courseid = c.instanceid)\n                      JOIN {user} u ON u.id = ra.userid\n                     WHERE u.deleted = 0 AND ra.roleid {$sqlroles}\n                  GROUP BY e.id, ra.userid";
            $DB->execute($sql, $params);
        }
        upgrade_main_savepoint(true, 2010061900.2);
    }
    if ($oldversion < 2010061900.21) {
        // hidden is completely removed, timestart+timeend are now in the user_enrolments table
        // Define field hidden to be dropped from role_assignments
        $table = new xmldb_table('role_assignments');
        $field = new xmldb_field('hidden');
        // Conditionally launch drop field hidden
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Define field timestart to be dropped from role_assignments
        $table = new xmldb_table('role_assignments');
        $field = new xmldb_field('timestart');
        // Conditionally launch drop field timestart
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Define field timeend to be dropped from role_assignments
        $table = new xmldb_table('role_assignments');
        $field = new xmldb_field('timeend');
        // Conditionally launch drop field timeend
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010061900.21);
    }
    if ($oldversion < 2010061900.22) {
        // Rename field enrol on table role_assignments to component and update content
        $table = new xmldb_table('role_assignments');
        $field = new xmldb_field('enrol', XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, null, 'modifierid');
        // Launch rename field enrol
        $dbman->rename_field($table, $field, 'component');
        // Changing precision of field component on table role_assignments to (100)
        $table = new xmldb_table('role_assignments');
        $field = new xmldb_field('component', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null, 'modifierid');
        // Launch change of precision for field component
        $dbman->change_field_precision($table, $field);
        // Manual is a special case - we use empty string instead now
        $params = array('empty' => $DB->sql_empty(), 'manual' => 'manual');
        $sql = "UPDATE {role_assignments}\n                   SET component = :empty\n                 WHERE component = :manual";
        $DB->execute($sql, $params);
        // Now migrate to real enrol component names
        $params = array('empty' => $DB->sql_empty());
        $concat = $DB->sql_concat("'enrol_'", 'component');
        $sql = "UPDATE {role_assignments}\n                   SET component = {$concat}\n                 WHERE component <> :empty\n                       AND contextid IN (\n                           SELECT id\n                             FROM {context}\n                            WHERE contextlevel >= 50)";
        $DB->execute($sql, $params);
        // Now migrate to real auth component names
        $params = array('empty' => $DB->sql_empty());
        $concat = $DB->sql_concat("'auth_'", 'component');
        $sql = "UPDATE {role_assignments}\n                   SET component = {$concat}\n                 WHERE component <> :empty\n                       AND contextid IN (\n                           SELECT id\n                             FROM {context}\n                            WHERE contextlevel < 50)";
        $DB->execute($sql, $params);
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010061900.22);
    }
    if ($oldversion < 2010061900.23) {
        // add proper itemid to role assignments that were added by enrolment plugins
        $sql = "UPDATE {role_assignments}\n                   SET itemid = (SELECT MIN({enrol}.id)\n                                    FROM {enrol}\n                                    JOIN {context} ON ({context}.contextlevel = 50 AND {context}.instanceid = {enrol}.courseid)\n                                   WHERE {role_assignments}.component = " . $DB->sql_concat("'enrol_'", "{enrol}.enrol") . " AND {context}.id = {role_assignments}.contextid)\n                 WHERE component <> 'enrol_manual' AND component LIKE 'enrol_%'";
        $DB->execute($sql);
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010061900.23);
    }
    if ($oldversion < 2010061900.3) {
        // make new list of active enrol plugins - order is important, meta should be always last, manual first
        $enabledplugins = explode(',', $CFG->enrol_plugins_enabled);
        $enabledplugins = array_merge(array('manual', 'guest', 'self', 'cohort'), $enabledplugins);
        if ($DB->record_exists('enrol', array('enrol' => 'meta'))) {
            $enabledplugins[] = 'meta';
        }
        $enabledplugins = array_unique($enabledplugins);
        set_config('enrol_plugins_enabled', implode(',', $enabledplugins));
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010061900.3);
    }
    if ($oldversion < 2010061900.31) {
        // finalise all new enrol settings and cleanup old settings
        // legacy allowunenrol was deprecated in 1.9 already
        unset_config('allwunenroll');
        // obsolete course presets
        unset_config('metacourse', 'moodlecourse');
        unset_config('enrol', 'moodlecourse');
        unset_config('enrollable', 'moodlecourse');
        unset_config('enrolperiod', 'moodlecourse');
        unset_config('expirynotify', 'moodlecourse');
        unset_config('notifystudents', 'moodlecourse');
        unset_config('expirythreshold', 'moodlecourse');
        unset_config('enrolpassword', 'moodlecourse');
        unset_config('guest', 'moodlecourse');
        unset_config('backup_sche_metacourse', 'backup');
        unset_config('lastexpirynotify');
        // hidden course categories now prevent only browsing, courses are accessible if you know the URL and course is visible
        unset_config('allowvisiblecoursesinhiddencategories');
        if (isset($CFG->coursemanager)) {
            set_config('coursecontact', $CFG->coursemanager);
            unset_config('coursemanager');
        }
        // migrate plugin settings - the problem here is we are splitting manual into three different plugins
        if (isset($CFG->enrol_manual_usepasswordpolicy)) {
            set_config('usepasswordpolicy', $CFG->enrol_manual_usepasswordpolicy, 'enrol_guest');
            set_config('usepasswordpolicy', $CFG->enrol_manual_usepasswordpolicy, 'enrol_self');
            set_config('groupenrolmentkeypolicy', $CFG->enrol_manual_usepasswordpolicy);
            unset_config('enrol_manual_usepasswordpolicy');
        }
        if (isset($CFG->enrol_manual_requirekey)) {
            set_config('requirepassword', $CFG->enrol_manual_requirekey, 'enrol_guest');
            set_config('requirepassword', $CFG->enrol_manual_requirekey, 'enrol_self');
            unset_config('enrol_manual_requirekey');
        }
        if (isset($CFG->enrol_manual_showhint)) {
            set_config('showhint', $CFG->enrol_manual_showhint, 'enrol_guest');
            set_config('showhint', $CFG->enrol_manual_showhint, 'enrol_self');
            unset_config('enrol_manual_showhint');
        }
        upgrade_main_savepoint(true, 2010061900.31);
    }
    if ($oldversion < 2010061900.32) {
        // MDL-22797 course completion has to be updated to use new enrol framework, it will not be enabled in final 2.0
        set_config('enableavailability', 0);
        set_config('enablecompletion', 0);
        upgrade_main_savepoint(true, 2010061900.32);
    }
    if ($oldversion < 2010062101) {
        /// Define field huburl to be dropped from course_published
        $table = new xmldb_table('course_published');
        $field = new xmldb_field('hubid');
        /// Conditionally launch drop field huburl
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        /// Define field huburl to be added to course_published
        $table = new xmldb_table('course_published');
        $field = new xmldb_field('huburl', XMLDB_TYPE_CHAR, '255', null, null, null, null, 'id');
        /// Conditionally launch add field huburl
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010062101);
    }
    if ($oldversion < 2010070300) {
        //TODO: this is a temporary hack for upgrade from PR3, to be removed later
        // Define field component to be added to files
        $table = new xmldb_table('files');
        $field = new xmldb_field('component', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null, 'contextid');
        // Conditionally upgrade from PR3
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
            $index = new xmldb_index('filearea-contextid-itemid', XMLDB_INDEX_NOTUNIQUE, array('filearea', 'contextid', 'itemid'));
            $dbman->drop_index($table, $index);
            $index = new xmldb_index('component-filearea-contextid-itemid', XMLDB_INDEX_NOTUNIQUE, array('component', 'filearea', 'contextid', 'itemid'));
            $dbman->add_index($table, $index);
            // Rename areas as add proper component
            $areas = $DB->get_fieldset_sql("SELECT DISTINCT filearea FROM {files}");
            if ($areas) {
                // fix incorrect itemids
                $DB->execute("UPDATE {files} SET itemid = 0 WHERE filearea = 'category_description'");
                // context identifies instances
                $DB->execute("UPDATE {files} SET itemid = 0 WHERE filearea = 'user_profile'");
                // context identifies instances
                $DB->execute("UPDATE {files} SET itemid = 0 WHERE filearea = 'block_html'");
                // context identifies instances
                foreach ($areas as $area) {
                    // rename areas
                    if ($area === 'course_backup') {
                        $area = 'backup_course';
                    } else {
                        if ($area === 'section_backup') {
                            $area = 'backup_section';
                        } else {
                            if ($area === 'activity_backup') {
                                $area = 'backup_activity';
                            } else {
                                if ($area === 'category_description') {
                                    $area = 'coursecat_description';
                                }
                            }
                        }
                    }
                    if ($area === 'block_html') {
                        $component = 'block_html';
                        $filearea = 'content';
                    } else {
                        list($component, $filearea) = explode('_', $area, 2);
                        // note this is just a hack which guesses plugin from old PRE3 files code, the whole point of adding component is to get rid of this guessing
                        if (file_exists("{$CFG->dirroot}/mod/{$component}/lib.php")) {
                            $component = 'mod_' . $component;
                        }
                    }
                    $DB->execute("UPDATE {files} SET component = :component, filearea = :filearea WHERE filearea = :area", array('component' => $component, 'filearea' => $filearea, 'area' => $area));
                }
                // Update all hashes
                $rs = $DB->get_recordset('files', array());
                foreach ($rs as $file) {
                    upgrade_set_timeout();
                    $pathnamehash = sha1("/{$file->contextid}/{$file->component}/{$file->filearea}/{$file->itemid}" . $file->filepath . $file->filename);
                    $DB->set_field('files', 'pathnamehash', $pathnamehash, array('id' => $file->id));
                }
                $rs->close();
            }
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010070300);
    }
    if ($oldversion < 2010070500) {
        /// Define field operation to be added to backup_controllers
        $table = new xmldb_table('backup_controllers');
        $field = new xmldb_field('operation', XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, 'backup', 'backupid');
        /// Conditionally launch add field operation
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010070500);
    }
    if ($oldversion < 2010070501) {
        /// Define field suspended to be added to user
        $table = new xmldb_table('user');
        $field = new xmldb_field('suspended', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'deleted');
        /// Conditionally launch add field suspended
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010070501);
    }
    if ($oldversion < 2010070502) {
        /// Define field newitemid to be added to backup_ids_template
        $table = new xmldb_table('backup_ids_template');
        $field = new xmldb_field('newitemid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'itemid');
        /// Conditionally launch add field newitemid
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Define field info to be added to backup_ids_template
        $table = new xmldb_table('backup_ids_template');
        $field = new xmldb_field('info', XMLDB_TYPE_TEXT, 'medium', null, null, null, null, 'parentitemid');
        /// Conditionally launch add field info
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010070502);
    }
    if ($oldversion < 2010070601) {
        // delete loan calc if not used - it was moved to contrib
        if (!file_exists("{$CFG->dirroot}/blocks/loancalc/version.php")) {
            if (!$DB->record_exists('block_instances', array('blockname' => 'loancalc'))) {
                $DB->delete_records('block', array('name' => 'loancalc'));
            }
        }
        upgrade_main_savepoint(true, 2010070601);
    }
    if ($oldversion < 2010070602) {
        // delete exercise if not used and not installed - now in contrib (do not use adminlib uninstall functions, they may change)
        if (!file_exists("{$CFG->dirroot}/mod/exercise/version.php")) {
            if ($module = $DB->get_record('modules', array('name' => 'exercise'))) {
                if (!$DB->record_exists('course_modules', array('module' => $module->id))) {
                    //purge capabilities
                    $DB->delete_records_select('capabilities', "name LIKE ?", array('mod/exercise:%'));
                    $DB->delete_records_select('role_capabilities', "capability LIKE ?", array('mod/exercise:%'));
                    $tables = array('exercise', 'exercise_submissions', 'exercise_assessments', 'exercise_elements', 'exercise_rubrics', 'exercise_grades');
                    foreach ($tables as $tname) {
                        $table = new xmldb_table($tname);
                        if ($dbman->table_exists($table)) {
                            $dbman->drop_table($table);
                        }
                    }
                    $DB->delete_records('event', array('modulename' => 'exercise'));
                    $DB->delete_records('log', array('module' => 'exercise'));
                    $DB->delete_records('modules', array('name' => 'exercise'));
                }
            }
        }
        upgrade_main_savepoint(true, 2010070602);
    }
    if ($oldversion < 2010070603) {
        // delete journal if not used and not installed - now in contrib (do not use adminlib uninstall functions, they may change)
        if (!file_exists("{$CFG->dirroot}/mod/journal/version.php")) {
            if ($module = $DB->get_record('modules', array('name' => 'journal'))) {
                if (!$DB->record_exists('course_modules', array('module' => $module->id))) {
                    //purge capabilities
                    $DB->delete_records_select('capabilities', "name LIKE ?", array('mod/journal:%'));
                    $DB->delete_records_select('role_capabilities', "capability LIKE ?", array('mod/journal:%'));
                    $tables = array('journal', 'journal_entries');
                    foreach ($tables as $tname) {
                        $table = new xmldb_table($tname);
                        if ($dbman->table_exists($table)) {
                            $dbman->drop_table($table);
                        }
                    }
                    $DB->delete_records('event', array('modulename' => 'journal'));
                    $DB->delete_records('log', array('module' => 'journal'));
                    $DB->delete_records('modules', array('name' => 'journal'));
                    unset_config('journal_initialdisable');
                }
            }
        }
        upgrade_main_savepoint(true, 2010070603);
    }
    if ($oldversion < 2010070604) {
        // delete lams if not used and not installed - now in contrib (do not use adminlib uninstall functions, they may change)
        if (!file_exists("{$CFG->dirroot}/mod/lams/version.php")) {
            if ($module = $DB->get_record('modules', array('name' => 'lams'))) {
                if (!$DB->record_exists('course_modules', array('module' => $module->id))) {
                    //purge capabilities
                    $DB->delete_records_select('capabilities', "name LIKE ?", array('mod/lams:%'));
                    $DB->delete_records_select('role_capabilities', "capability LIKE ?", array('mod/lams:%'));
                    $tables = array('lams', '');
                    foreach ($tables as $tname) {
                        $table = new xmldb_table($tname);
                        if ($dbman->table_exists($table)) {
                            $dbman->drop_table($table);
                        }
                    }
                    $DB->delete_records('event', array('modulename' => 'lams'));
                    $DB->delete_records('log', array('module' => 'lams'));
                    $DB->delete_records('modules', array('name' => 'lams'));
                    unset_config('lams_initialdisable');
                }
            }
        }
        upgrade_main_savepoint(true, 2010070604);
    }
    if ($oldversion < 2010070801) {
        /// Before changing the field, drop dependent indexes
        /// Define index shortname (not unique) to be dropped form course_request
        $table = new xmldb_table('user');
        $index = new xmldb_index('city', XMLDB_INDEX_NOTUNIQUE, array('city'));
        /// Conditionally launch drop index shortname
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        /// Changing precision of field city on table user to (120)
        $field = new xmldb_field('city', XMLDB_TYPE_CHAR, '120', null, XMLDB_NOTNULL, null, null, 'address');
        /// Launch change of precision for field city
        $dbman->change_field_precision($table, $field);
        /// Conditionally launch add index typeitem_ix
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010070801);
    }
    if ($oldversion < 2010071000) {
        //purge unused editor settings
        unset_config('editorbackgroundcolor');
        unset_config('editorfontfamily');
        unset_config('editorfontsize');
        unset_config('editorkillword');
        unset_config('editorhidebuttons');
        unset_config('editorfontlist');
        upgrade_main_savepoint(true, 2010071000);
    }
    if ($oldversion < 2010071001) {
        // purge obsolete stats settings
        unset_config('statscatdepth');
        upgrade_main_savepoint(true, 2010071001);
    }
    if ($oldversion < 2010071100) {
        // move user icons to file storage pool
        upgrade_migrate_user_icons();
        upgrade_main_savepoint(true, 2010071100);
    }
    if ($oldversion < 2010071101) {
        // move user icons to file storage pool
        upgrade_migrate_group_icons();
        upgrade_main_savepoint(true, 2010071101);
    }
    if ($oldversion < 2010071300) {
        // Define field timecreated to be added to user_enrolments
        $table = new xmldb_table('user_enrolments');
        $field = new xmldb_field('timecreated', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, 0, 'modifierid');
        // Launch add field timecreated
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // now try to guess the time created
        $sql = "UPDATE {user_enrolments} SET timecreated = timemodified WHERE timecreated = 0";
        $DB->execute($sql);
        $sql = "UPDATE {user_enrolments} SET timecreated = timestart WHERE timestart <> 0 AND timestart < timemodified";
        $DB->execute($sql);
        upgrade_main_savepoint(true, 2010071300);
    }
    if ($oldversion < 2010071700) {
        // Make itemname bigger (160cc) to store component+filearea
        $table = new xmldb_table('backup_ids_template');
        // Define key backupid_itemname_itemid_uk (unique) to be dropped form backup_ids_template
        $key = new xmldb_key('backupid_itemname_itemid_uk', XMLDB_KEY_UNIQUE, array('backupid', 'itemname', 'itemid'));
        // Define index backupid_parentitemid_ix (not unique) to be dropped form backup_ids_template
        $index = new xmldb_index('backupid_parentitemid_ix', XMLDB_INDEX_NOTUNIQUE, array('backupid', 'itemname', 'parentitemid'));
        // Define field itemname to be 160cc
        $field = new xmldb_field('itemname', XMLDB_TYPE_CHAR, '160', null, XMLDB_NOTNULL, null, null, 'backupid');
        // Launch drop key backupid_itemname_itemid_uk
        $dbman->drop_key($table, $key);
        // Conditionally launch drop index backupid_parentitemid_ix
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Changing precision of field itemname on table backup_ids_template to (160)
        $dbman->change_field_precision($table, $field);
        // Launch add key backupid_itemname_itemid_uk
        $dbman->add_key($table, $key);
        // Conditionally launch add index backupid_parentitemid_ix
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010071700);
    }
    if ($oldversion < 2010071701) {
        // Drop legacy core tables that now belongs to mnetservice_enrol plugin
        // Upgrade procedure not needed as the tables are used for caching purposes only
        $tables = array('mnet_enrol_course', 'mnet_enrol_assignments');
        foreach ($tables as $tname) {
            $table = new xmldb_table($tname);
            if ($dbman->table_exists($table)) {
                $dbman->drop_table($table);
            }
        }
        upgrade_main_savepoint(true, 2010071701);
    }
    if ($oldversion < 2010071800) {
        // Define table backup_files_template to be created
        $table = new xmldb_table('backup_files_template');
        // Adding fields to table backup_files_template
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('backupid', XMLDB_TYPE_CHAR, '32', null, XMLDB_NOTNULL, null, null);
        $table->add_field('contextid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('component', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null);
        $table->add_field('filearea', XMLDB_TYPE_CHAR, '50', null, XMLDB_NOTNULL, null, null);
        $table->add_field('itemid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('info', XMLDB_TYPE_TEXT, 'medium', null, null, null, null);
        // Adding keys to table backup_files_template
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table backup_files_template
        $table->add_index('backupid_contextid_component_filearea_itemid_ix', XMLDB_INDEX_NOTUNIQUE, array('backupid', 'contextid', 'component', 'filearea', 'itemid'));
        // Conditionally launch create table for backup_files_template
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010071800);
    }
    if ($oldversion < 2010072300) {
        // Define field capabilities to be added to external_functions
        $table = new xmldb_table('external_functions');
        $field = new xmldb_field('capabilities', XMLDB_TYPE_CHAR, '255', null, null, null, null, 'component');
        // Conditionally launch add field capabilities
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010072300);
    }
    if ($oldversion < 2010072700) {
        // Define index backupid_itemname_newitemid_ix (not unique) to be added to backup_ids_template
        $table = new xmldb_table('backup_ids_template');
        $index = new xmldb_index('backupid_itemname_newitemid_ix', XMLDB_INDEX_NOTUNIQUE, array('backupid', 'itemname', 'newitemid'));
        // Conditionally launch add index backupid_itemname_newitemid_ix
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010072700);
    }
    if ($oldversion < 2010080303) {
        $rs = $DB->get_recordset_sql('SELECT i.id, i.name, r.type FROM {repository_instances} i, {repository} r WHERE i.typeid = r.id');
        foreach ($rs as $record) {
            upgrade_set_timeout();
            if ($record->name == $record->type) {
                // repository_instances was saving type name as in name field
                // which should be empty, the repository api will try to find
                // instance name from language files
                $DB->set_field('repository_instances', 'name', '');
            }
        }
        $rs->close();
        upgrade_main_savepoint(true, 2010080303);
    }
    if ($oldversion < 2010080305) {
        // first drop all log display actions, we will recreate them automatically later
        $DB->delete_records('log_display', array());
        // Define field component to be added to log_display
        $table = new xmldb_table('log_display');
        $field = new xmldb_field('component', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null, 'field');
        // Launch add field component
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010080305);
    }
    if ($oldversion < 2010080900) {
        /// Define field generalfeedbackformat to be added to question
        $table = new xmldb_table('question');
        $field = new xmldb_field('generalfeedbackformat', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0', 'generalfeedback');
        /// Conditionally launch add field generalfeedbackformat
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Upgrading the text formats in some question types depends on the
        /// questiontextformat field, but the question type upgrade only runs
        /// after the code below has messed around with the questiontextformat
        /// value. Therefore, we need to create a new column to store the old value.
        /// The column should be dropped in Moodle 2.1.
        /// Define field oldquestiontextformat to be added to question
        $field = new xmldb_field('oldquestiontextformat', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0', 'generalfeedback');
        /// Conditionally launch add field oldquestiontextformat
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Define field infoformat to be added to question_categories
        $table = new xmldb_table('question_categories');
        $field = new xmldb_field('infoformat', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0', 'info');
        /// Conditionally launch add field infoformat
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Define field answerformat to be added to question_answers
        $table = new xmldb_table('question_answers');
        $field = new xmldb_field('answerformat', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0', 'answer');
        /// Conditionally launch add field answerformat
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Define field feedbackformat to be added to question_answers
        $field = new xmldb_field('feedbackformat', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0', 'feedback');
        /// Conditionally launch add field feedbackformat
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Define field manualcommentformat to be added to question_sessions
        $table = new xmldb_table('question_sessions');
        $field = new xmldb_field('manualcommentformat', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0', 'manualcomment');
        /// Conditionally launch add field manualcommentformat
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Main savepoint reached
        upgrade_main_savepoint(true, 2010080900);
    }
    /// updating question image
    if ($oldversion < 2010080901) {
        $fs = get_file_storage();
        // Define field image to be dropped from question
        $table = new xmldb_table('question');
        $field = new xmldb_field('image');
        // Conditionally launch drop field image
        if ($dbman->field_exists($table, $field)) {
            $rs = $DB->get_recordset('question');
            $textlib = textlib_get_instance();
            foreach ($rs as $question) {
                // may take awhile
                upgrade_set_timeout();
                if (empty($question->image)) {
                    continue;
                }
                if (!($category = $DB->get_record('question_categories', array('id' => $question->category)))) {
                    continue;
                }
                $categorycontext = get_context_instance_by_id($category->contextid);
                // question files are stored in course level
                // so we have to find course context
                switch ($categorycontext->contextlevel) {
                    case CONTEXT_COURSE:
                        $context = $categorycontext;
                        break;
                    case CONTEXT_MODULE:
                        $courseid = $DB->get_field('course_modules', 'course', array('id' => $categorycontext->instanceid));
                        $context = get_context_instance(CONTEXT_COURSE, $courseid);
                        break;
                    case CONTEXT_COURSECAT:
                    case CONTEXT_SYSTEM:
                        $context = get_system_context();
                        break;
                    default:
                        continue;
                }
                if ($textlib->substr($textlib->strtolower($question->image), 0, 7) == 'http://') {
                    // it is a link, appending to existing question text
                    $question->questiontext .= ' <img src="' . $question->image . '" />';
                    $question->image = '';
                    // update question record
                    $DB->update_record('question', $question);
                } else {
                    $filename = basename($question->image);
                    $filepath = dirname($question->image);
                    if (empty($filepath) or $filepath == '.' or $filepath == '/') {
                        $filepath = '/';
                    } else {
                        // append /
                        $filepath = '/' . trim($filepath, './@#$ ') . '/';
                    }
                    // course files already moved to file pool by previous upgrade block
                    // so we just create copy from course_legacy area
                    if ($image = $fs->get_file($context->id, 'course', 'legacy', 0, $filepath, $filename)) {
                        // move files to file pool
                        $file_record = array('contextid' => $category->contextid, 'component' => 'question', 'filearea' => 'questiontext', 'itemid' => $question->id);
                        $fs->create_file_from_storedfile($file_record, $image);
                        $question->questiontext .= ' <img src="@@PLUGINFILE@@' . $filepath . $filename . '" />';
                        $question->image = '';
                        // update question record
                        $DB->update_record('question', $question);
                    }
                }
            }
            $rs->close();
            $dbman->drop_field($table, $field);
        }
        // Update question_answers.
        // In question_answers.feedback was previously always treated as
        // FORMAT_HTML in calculated, multianswer, multichoice, numerical,
        // shortanswer and truefalse; and
        // FORMAT_MOODLE in essay (despite being edited using the HTML editor)
        // So essay feedback needs to be converted to HTML unless $CFG->texteditors == 'textarea'.
        // For all question types except multichoice,
        // question_answers.answer is FORMAT_PLAIN and does not need to be changed.
        // For multichoice, question_answers.answer is FORMAT_MOODLE, and should
        // stay that way, at least for now.
        $rs = $DB->get_recordset_sql('
                SELECT qa.*, q.qtype
                FROM {question_answers} qa
                JOIN {question} q ON qa.question = q.id');
        foreach ($rs as $record) {
            // may take awhile
            upgrade_set_timeout();
            // Convert question_answers.answer
            if ($record->qtype !== 'multichoice') {
                $record->answerformat = FORMAT_PLAIN;
            } else {
                $record->answerformat = FORMAT_MOODLE;
            }
            // Convert question_answers.feedback
            if ($CFG->texteditors !== 'textarea') {
                if ($record->qtype == 'essay') {
                    $record->feedback = text_to_html($record->feedback, false, false, true);
                }
                $record->feedbackformat = FORMAT_HTML;
            } else {
                $record->feedbackformat = FORMAT_MOODLE;
            }
            $DB->update_record('question_answers', $record);
        }
        $rs->close();
        // In the question table, the code previously used questiontextformat
        // for both question text and general feedback. We need to copy the
        // values into the new column.
        // Then we need to convert FORMAT_MOODLE to FORMAT_HTML (depending on
        // $CFG->texteditors).
        $DB->execute('
                UPDATE {question}
                SET generalfeedbackformat = questiontextformat');
        // Also save the old questiontextformat, so that plugins that need it
        // can access it.
        $DB->execute('
                UPDATE {question}
                SET oldquestiontextformat = questiontextformat');
        // Now covert FORMAT_MOODLE content, if necssary.
        if ($CFG->texteditors !== 'textarea') {
            $rs = $DB->get_recordset('question', array('questiontextformat' => FORMAT_MOODLE));
            foreach ($rs as $record) {
                // may take awhile
                upgrade_set_timeout();
                $record->questiontext = text_to_html($record->questiontext, false, false, true);
                $record->questiontextformat = FORMAT_HTML;
                $record->generalfeedback = text_to_html($record->generalfeedback, false, false, true);
                $record->generalfeedbackformat = FORMAT_HTML;
                $DB->update_record('question', $record);
            }
            $rs->close();
        }
        // In the past, question_sessions.manualcommentformat was always treated
        // as FORMAT_HTML.
        $DB->set_field('question_sessions', 'manualcommentformat', FORMAT_HTML);
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010080901);
    }
    if ($oldversion < 2010082502) {
        // migrate file pool xx/xx/xx directory structure to xx/xx in older 2.0dev installs
        upgrade_simplify_overkill_pool_structure();
        upgrade_main_savepoint(true, 2010082502);
    }
    if ($oldversion < 2010091303) {
        // drop all test tables from old xmldb test suite
        $table = new xmldb_table('testtable');
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        $table = new xmldb_table('anothertest');
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        $table = new xmldb_table('newnameforthetable');
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        upgrade_main_savepoint(true, 2010091303);
    }
    if ($oldversion < 2010091500) {
        // Changing precision of field token on table registration_hubs to (255)
        $table = new xmldb_table('registration_hubs');
        $field = new xmldb_field('token', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null, 'id');
        // Launch change of precision for field token
        $dbman->change_field_precision($table, $field);
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010091500);
    }
    if ($oldversion < 2010091501) {
        // This index used to exist in Moodle 1.9 and was never dropped in the upgrade above.
        // Drop it now, or it breaks the following alter column.
        // Define index pagetypepattern (not unique) to be dropped form block_instances
        $table = new xmldb_table('block_instances');
        $index = new xmldb_index('pagetypepattern', XMLDB_INDEX_NOTUNIQUE, array('pagetypepattern'));
        // Conditionally launch drop index pagetypepattern
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010091501);
    }
    if ($oldversion < 2010091502) {
        // Need to drop the index before we can alter the column precision in the next step.
        // Define index parentcontextid-showinsubcontexts-pagetypepattern-subpagepattern (not unique) to be dropped form block_instances
        $table = new xmldb_table('block_instances');
        $index = new xmldb_index('parentcontextid-showinsubcontexts-pagetypepattern-subpagepattern', XMLDB_INDEX_NOTUNIQUE, array('parentcontextid', 'showinsubcontexts', 'pagetypepattern', 'subpagepattern'));
        // Conditionally launch drop index parentcontextid-showinsubcontexts-pagetypepattern-subpagepattern
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010091502);
    }
    if ($oldversion < 2010091503) {
        // Changing precision of field pagetypepattern on table block_instances to (64)
        $table = new xmldb_table('block_instances');
        $field = new xmldb_field('pagetypepattern', XMLDB_TYPE_CHAR, '64', null, XMLDB_NOTNULL, null, null, 'showinsubcontexts');
        // Launch change of precision for field pagetypepattern
        $dbman->change_field_precision($table, $field);
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010091503);
    }
    if ($oldversion < 2010091504) {
        // Now add the index back.
        // Define index parentcontextid-showinsubcontexts-pagetypepattern-subpagepattern (not unique) to be added to block_instances
        $table = new xmldb_table('block_instances');
        $index = new xmldb_index('parentcontextid-showinsubcontexts-pagetypepattern-subpagepattern', XMLDB_INDEX_NOTUNIQUE, array('parentcontextid', 'showinsubcontexts', 'pagetypepattern', 'subpagepattern'));
        // Conditionally launch add index parentcontextid-showinsubcontexts-pagetypepattern-subpagepattern
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010091504);
    }
    if ($oldversion < 2010091505) {
        // drop all events queued from 1.9, unfortunately we can not process them because the serialisation of data changed
        // also the events format was changed....
        $DB->delete_records('events_queue_handlers', array());
        $DB->delete_records('events_queue', array());
        //reset all status fields too
        $DB->set_field('events_handlers', 'status', 0, array());
        upgrade_main_savepoint(true, 2010091505);
    }
    if ($oldversion < 2010091506) {
        // change component string in events_handlers records to new "_" format
        if ($handlers = $DB->get_records('events_handlers')) {
            foreach ($handlers as $handler) {
                $handler->handlermodule = str_replace('/', '_', $handler->handlermodule);
                $DB->update_record('events_handlers', $handler);
            }
        }
        unset($handlers);
        upgrade_main_savepoint(true, 2010091506);
    }
    if ($oldversion < 2010091507) {
        // Define index eventname-handlermodule (unique) to be dropped form events_handlers
        $table = new xmldb_table('events_handlers');
        $index = new xmldb_index('eventname-handlermodule', XMLDB_INDEX_UNIQUE, array('eventname', 'handlermodule'));
        // Conditionally launch drop index eventname-handlermodule
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010091507);
    }
    if ($oldversion < 2010091508) {
        // Rename field handlermodule on table events_handlers to component
        $table = new xmldb_table('events_handlers');
        $field = new xmldb_field('handlermodule', XMLDB_TYPE_CHAR, '166', null, XMLDB_NOTNULL, null, null, 'eventname');
        // Launch rename field handlermodule
        $dbman->rename_field($table, $field, 'component');
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010091508);
    }
    if ($oldversion < 2010091509) {
        // Define index eventname-component (unique) to be added to events_handlers
        $table = new xmldb_table('events_handlers');
        $index = new xmldb_index('eventname-component', XMLDB_INDEX_UNIQUE, array('eventname', 'component'));
        // Conditionally launch add index eventname-component
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010091509);
    }
    if ($oldversion < 2010091510) {
        // Define field internal to be added to events_handlers
        $table = new xmldb_table('events_handlers');
        $field = new xmldb_field('internal', XMLDB_TYPE_INTEGER, '2', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '1', 'status');
        // Conditionally launch add field internal
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010091510);
    }
    if ($oldversion < 2010091700) {
        // Fix MNet sso_jump_url for Moodle application
        $DB->set_field('mnet_application', 'sso_jump_url', '/auth/mnet/jump.php', array('name' => 'moodle', 'sso_jump_url' => '/auth/mnet/land.php'));
        upgrade_main_savepoint(true, 2010091700);
    }
    if ($oldversion < 2010092000) {
        // drop multiple field again because it was still in install.xml in 2.0dev
        // Define field multiple to be dropped from block
        $table = new xmldb_table('block');
        $field = new xmldb_field('multiple');
        // Conditionally launch drop field multiple
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010092000);
    }
    if ($oldversion < 2010101300) {
        // Fix MDL-24641 : the registered language should not be empty otherwise cron will fail
        $registeredhubs = $DB->get_records('registration_hubs', array('confirmed' => 1));
        if (!empty($registeredhubs)) {
            foreach ($registeredhubs as $hub) {
                $cleanhuburl = clean_param($hub->huburl, PARAM_ALPHANUMEXT);
                $sitelanguage = get_config('hub', 'site_language_' . $cleanhuburl);
                if (empty($sitelanguage)) {
                    set_config('site_language_' . $cleanhuburl, current_language(), 'hub');
                }
            }
        }
        upgrade_main_savepoint(true, 2010101300);
    }
    //MDL-24721 -add hidden column to grade_categories. This was done previously but it wasn't included in
    //install.xml so there are 2.0 sites that are missing it.
    if ($oldversion < 2010101900) {
        $table = new xmldb_table('grade_categories');
        $field = new xmldb_field('hidden', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, 0, 'timemodified');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        upgrade_main_savepoint(true, 2010101900);
    }
    // new format of the emoticons setting
    if ($oldversion < 2010102300) {
        unset($CFG->emoticons);
        $DB->delete_records('config', array('name' => 'emoticons'));
        $DB->delete_records('cache_text');
        // changed md5 hash calculation
        upgrade_main_savepoint(true, 2010102300);
    }
    //MDL-24771
    if ($oldversion < 2010102601) {
        $fieldnotification = new xmldb_field('notification', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, null, null, 0, 'smallmessage');
        $fieldcontexturl = new xmldb_field('contexturl', XMLDB_TYPE_TEXT, 'small', null, null, null, null, 'notification');
        $fieldcontexturlname = new xmldb_field('contexturlname', XMLDB_TYPE_TEXT, 'small', null, null, null, null, 'contexturl');
        $fieldstoadd = array($fieldnotification, $fieldcontexturl, $fieldcontexturlname);
        $tablestomodify = array(new xmldb_table('message'), new xmldb_table('message_read'));
        foreach ($tablestomodify as $table) {
            foreach ($fieldstoadd as $field) {
                if (!$dbman->field_exists($table, $field)) {
                    $dbman->add_field($table, $field);
                }
            }
        }
        upgrade_main_savepoint(true, 2010102601);
    }
    // MDL-24694 needs increasing size of user_preferences.name(varchar[50]) field due to
    // long preferences names for messaging which need components parts within the name
    // eg: 'message_provider_mod_assignment_assignments_loggedin'
    if ($oldversion < 2010102602) {
        // Define index userid-name (unique) to be dropped form user_preferences
        $table = new xmldb_table('user_preferences');
        $index = new xmldb_index('userid-name', XMLDB_INDEX_UNIQUE, array('userid', 'name'));
        // Conditionally launch drop index userid-name
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Changing precision of field name on table user_preferences to (255)
        $field = new xmldb_field('name', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null, 'userid');
        // Launch change of precision for field name
        $dbman->change_field_precision($table, $field);
        // Conditionally launch add index userid-name
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010102602);
    }
    if ($oldversion < 2010102700) {
        $table = new xmldb_table('post');
        $field = new xmldb_field('uniquehash', XMLDB_TYPE_CHAR, '128', null, XMLDB_NOTNULL, null, null, 'content');
        // Launch change of precision for field name
        $dbman->change_field_precision($table, $field);
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010102700);
    }
    if ($oldversion < 2010110200) {
        // fix tags itemtype for wiki
        $sql = "UPDATE {tag_instance}\n                SET itemtype = 'wiki_pages'\n                WHERE itemtype = 'wiki_page'";
        $DB->execute($sql);
        echo $OUTPUT->notification('Updating tags itemtype', 'notifysuccess');
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010110200);
    }
    //remove forum_logblocked from config. No longer required after user->emailstop was removed
    if ($oldversion < 2010110500) {
        unset_config('forum_logblocked');
        upgrade_main_savepoint(true, 2010110500);
    }
    if ($oldversion < 2010110800) {
        // convert $CFG->disablecourseajax to $CFG->enablecourseajax
        $disabledcourseajax = get_config('disablecourseajax', 0);
        if ($disabledcourseajax) {
            set_config('enablecourseajax', 0);
        } else {
            set_config('enablecourseajax', 1);
        }
        unset_config('disablecourseajax');
        upgrade_main_savepoint(true, 2010110800);
    }
    if ($oldversion < 2010111000) {
        // Clean up the old scheduled backup settings that are no longer relevant
        update_fix_automated_backup_config();
        upgrade_main_savepoint(true, 2010111000);
    }
    if ($oldversion < 2010111702) {
        // Clean up the old experimental split restore no loger used
        unset_config('experimentalsplitrestore');
        upgrade_main_savepoint(true, 2010111702);
    }
    if ($oldversion < 2010121401) {
        // Define table profiling to be created
        $table = new xmldb_table('profiling');
        // Adding fields to table profiling
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('runid', XMLDB_TYPE_CHAR, '32', null, XMLDB_NOTNULL, null, null);
        $table->add_field('url', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('data', XMLDB_TYPE_TEXT, 'big', null, XMLDB_NOTNULL, null, null);
        $table->add_field('totalexecutiontime', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('totalcputime', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('totalcalls', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('totalmemory', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('runreference', XMLDB_TYPE_INTEGER, '2', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('runcomment', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        // Adding keys to table profiling
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('runid_uk', XMLDB_KEY_UNIQUE, array('runid'));
        // Adding indexes to table profiling
        $table->add_index('url_runreference_ix', XMLDB_INDEX_NOTUNIQUE, array('url', 'runreference'));
        $table->add_index('timecreated_runreference_ix', XMLDB_INDEX_NOTUNIQUE, array('timecreated', 'runreference'));
        // Conditionally launch create table for profiling
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2010121401);
    }
    if ($oldversion < 2011011401) {
        $columns = $DB->get_columns('block_instances');
        // Check if we need to fix the default weight column
        if (array_key_exists('defaultweight', $columns) && $columns['defaultweight']->max_length != 10) {
            // Fix discrepancies in the block_instances table after upgrade from 1.9
            $table = new xmldb_table('block_instances');
            // defaultweight is smallint(3) after upgrade should be bigint 10
            // Also fixed in earlier upgrade code
            $field = new xmldb_field('defaultweight', XMLDB_TYPE_INTEGER, 10, null, XMLDB_NOTNULL, null, null, 'defaultregion');
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_type($table, $field);
            }
            // add missing key `blocinst_par_ix` (`parentcontextid`)
            $index = new xmldb_index('parentcontextid', XMLDB_INDEX_NOTUNIQUE, array('parentcontextid'));
            if (!$dbman->index_exists($table, $index)) {
                $dbman->add_index($table, $index);
            }
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2011011401);
    }
    if ($oldversion < 2011011402) {
        // Fix discrepancies in the block_positions table after upgrade from 1.9
        $table = new xmldb_table('block_positions');
        $columns = $DB->get_columns('block_positions');
        // Check if we need to fix the blockinstanceid field
        if (array_key_exists('blockinstanceid', $columns) && empty($columns['blockinstanceid']->unsigned)) {
            // Fix blockinstanceid
            // First remove the indexs on the field
            $indexone = new xmldb_index('blockinstanceid', XMLDB_INDEX_NOTUNIQUE, array('blockinstanceid'));
            $indexall = new xmldb_index('blockinstanceid-contextid-pagetype-subpage', XMLDB_INDEX_UNIQUE, array('blockinstanceid', 'contextid', 'pagetype', 'subpage'));
            if ($dbman->index_exists($table, $indexone)) {
                $dbman->drop_index($table, $indexone);
            }
            if ($dbman->index_exists($table, $indexall)) {
                $dbman->drop_index($table, $indexall);
            }
            // blockinstanceid should be unsigned
            // Also fixed in earlier upgrade code
            $field = new xmldb_field('blockinstanceid', XMLDB_TYPE_INTEGER, 10, XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null, 'id');
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_unsigned($table, $field);
            }
            // Add the indexs back in
            $dbman->add_index($table, $indexone);
            $dbman->add_index($table, $indexall);
        }
        // Check if the visible field needs fixing.
        if (array_key_exists('visible', $columns) && !empty($columns['visible']->has_default)) {
            // visible shouldn't have a default
            // Also fixed in earlier upgrade code
            $field = new xmldb_field('visible', XMLDB_TYPE_INTEGER, 4, null, XMLDB_NOTNULL, null, null, 'subpage');
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_default($table, $field);
            }
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2011011402);
    }
    if ($oldversion < 2011011403) {
        $columns = $DB->get_columns('grade_categories');
        // Check if we need to fix the hidden field
        if (array_key_exists('hidden', $columns) && $columns['hidden']->max_length != 1) {
            // Fix discrepancies in the grade_categories table after upgrade from 1.9
            $table = new xmldb_table('grade_categories');
            // hidden should be tinyint(1)
            // Also fixed in earlier upgrade code
            $field = new xmldb_field('hidden', XMLDB_TYPE_INTEGER, 1, XMLDB_UNSIGNED, XMLDB_NOTNULL, null, 0, 'timemodified');
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_precision($table, $field);
            }
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2011011403);
    }
    if ($oldversion < 2011011404) {
        // Fix discrepancies in the message table after upgrade from 1.9
        $columns = $DB->get_columns('message');
        $table = new xmldb_table('message');
        // Check if we need to fix the useridfrom field
        if (array_key_exists('useridfrom', $columns) && empty($columns['useridfrom']->unsigned)) {
            // useridfrom should be unsigned
            $field = new xmldb_field('useridfrom', XMLDB_TYPE_INTEGER, 10, XMLDB_UNSIGNED, XMLDB_NOTNULL, null, 0, 'id');
            $index = new xmldb_index('useridfrom', XMLDB_INDEX_NOTUNIQUE, array('useridfrom'));
            if ($dbman->index_exists($table, $index)) {
                $dbman->drop_index($table, $index);
            }
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_unsigned($table, $field);
            }
            $dbman->add_index($table, $index);
        }
        // Check if we need to fix the useridto field
        if (array_key_exists('useridto', $columns) && empty($columns['useridto']->unsigned)) {
            // useridto should be unsigned
            $field = new xmldb_field('useridto', XMLDB_TYPE_INTEGER, 10, XMLDB_UNSIGNED, XMLDB_NOTNULL, null, 0, 'useridfrom');
            $index = new xmldb_index('useridto', XMLDB_INDEX_NOTUNIQUE, array('useridto'));
            if ($dbman->index_exists($table, $index)) {
                $dbman->drop_index($table, $index);
            }
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_unsigned($table, $field);
            }
            $dbman->add_index($table, $index);
        }
        // Check if we need to fix the notification field
        if (array_key_exists('notification', $columns) && !empty($columns['notification']->not_null)) {
            // notification should allow null
            // Fixed in earlier upgrade code
            $field = new xmldb_field('notification', XMLDB_TYPE_INTEGER, 1, XMLDB_UNSIGNED, null, null, 0, 'smallmessage');
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_notnull($table, $field);
            }
        }
        // Check if we need to fix the contexturl field
        if (array_key_exists('contexturl', $columns) && strpos($columns['contexturl']->type, 'text') === false) {
            // contexturl should be text
            // Fixed in earlier upgrade code
            $field = new xmldb_field('contexturl', XMLDB_TYPE_TEXT, 'small', null, null, null, null, 'notification');
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_type($table, $field);
            }
        }
        // Check if we need to fix the contexturl field
        if (array_key_exists('contexturlname', $columns) && strpos($columns['contexturlname']->type, 'text') === false) {
            // contexturlname should be text
            // Fixed in earlier upgrade code
            $field = new xmldb_field('contexturlname', XMLDB_TYPE_TEXT, 'small', null, null, null, null, 'contexturl');
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_type($table, $field);
            }
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2011011404);
    }
    if ($oldversion < 2011011405) {
        // Fix discrepancies in the message_read table after upgrade from 1.9
        $columns = $DB->get_columns('message_read');
        $table = new xmldb_table('message_read');
        // Check if we need to fix the useridfrom field
        if (array_key_exists('useridfrom', $columns) && empty($columns['useridfrom']->unsigned)) {
            // useridfrom should be unsigned
            $field = new xmldb_field('useridfrom', XMLDB_TYPE_INTEGER, 10, XMLDB_UNSIGNED, XMLDB_NOTNULL, null, 0, 'id');
            $index = new xmldb_index('useridfrom', XMLDB_INDEX_NOTUNIQUE, array('useridfrom'));
            if ($dbman->index_exists($table, $index)) {
                $dbman->drop_index($table, $index);
            }
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_unsigned($table, $field);
            }
            $dbman->add_index($table, $index);
        }
        // Check if we need to fix the useridto field
        if (array_key_exists('useridto', $columns) && empty($columns['useridto']->unsigned)) {
            // useridto should be unsigned
            $field = new xmldb_field('useridto', XMLDB_TYPE_INTEGER, 10, XMLDB_UNSIGNED, XMLDB_NOTNULL, null, 0, 'useridfrom');
            $index = new xmldb_index('useridto', XMLDB_INDEX_NOTUNIQUE, array('useridto'));
            if ($dbman->index_exists($table, $index)) {
                $dbman->drop_index($table, $index);
            }
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_unsigned($table, $field);
            }
            $dbman->add_index($table, $index);
        }
        // Check if we need to fix the notification field
        if (array_key_exists('notification', $columns) && !empty($columns['notification']->not_null)) {
            // notification should allow null
            // Fixed in earlier upgrade code
            $field = new xmldb_field('notification', XMLDB_TYPE_INTEGER, 1, XMLDB_UNSIGNED, null, null, 0, 'smallmessage');
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_notnull($table, $field);
            }
        }
        // Check if we need to fix the contexturl field
        if (array_key_exists('contexturl', $columns) && strpos($columns['contexturl']->type, 'text') === false) {
            // contexturl should be text
            // Fixed in earlier upgrade code
            $field = new xmldb_field('contexturl', XMLDB_TYPE_TEXT, 'small', null, null, null, null, 'notification');
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_type($table, $field);
            }
        }
        // Check if we need to fix the contexturl field
        if (array_key_exists('contexturlname', $columns) && strpos($columns['contexturlname']->type, 'text') === false) {
            // contexturlname should be text
            // Fixed in earlier upgrade code
            $field = new xmldb_field('contexturlname', XMLDB_TYPE_TEXT, 'small', null, null, null, null, 'contexturl');
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_type($table, $field);
            }
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2011011405);
    }
    if ($oldversion < 2011011406) {
        // Fix discrepancies in the my_pages table after upgrade from 1.9
        $columns = $DB->get_columns('my_pages');
        $table = new xmldb_table('my_pages');
        // Check if we need to fix the private column
        if (array_key_exists('private', $columns) && $columns['private']->default_value != '1') {
            // private should be default 1
            // Fixed in earlier upgrade code
            $field = new xmldb_field('private', XMLDB_TYPE_INTEGER, 1, XMLDB_UNSIGNED, XMLDB_NOTNULL, null, 1, 'name');
            $index = new xmldb_index('user_idx', XMLDB_INDEX_NOTUNIQUE, array('userid', 'private'));
            if ($dbman->index_exists($table, $index)) {
                $dbman->drop_index($table, $index);
            }
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_default($table, $field);
            }
            $dbman->add_index($table, $index);
        }
        // Check if we need to fix the sortorder field
        if (array_key_exists('sortorder', $columns) && !empty($columns['sortorder']->unsigned)) {
            // Sortorder should not be unsigned
            // Fixed in earlier upgrade code
            $field = new xmldb_field('sortorder', XMLDB_TYPE_INTEGER, 6, null, XMLDB_NOTNULL, null, 0, 'private');
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_notnull($table, $field);
            }
        }
        upgrade_main_savepoint(true, 2011011406);
    }
    if ($oldversion < 2011011407) {
        // Check if we need to fix post.uniquehash
        $columns = $DB->get_columns('my_pages');
        if (array_key_exists('uniquehash', $columns) && $columns['uniquehash']->max_length != 128) {
            // Fix discrepancies in the post table after upgrade from 1.9
            $table = new xmldb_table('post');
            // Uniquehash should be 128 chars
            // Fixed in earlier upgrade code
            $field = new xmldb_field('uniquehash', XMLDB_TYPE_CHAR, 128, null, XMLDB_NOTNULL, null, null, 'content');
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_precision($table, $field);
            }
        }
        upgrade_main_savepoint(true, 2011011407);
    }
    if ($oldversion < 2011011408) {
        // Fix question in the post table after upgrade from 1.9
        $columns = $DB->get_columns('question');
        $table = new xmldb_table('question');
        // Check if we need to fix default grade
        if (array_key_exists('defaultgrade', $columns) && (empty($columns['defaultgrade']->unsigned) || empty($columns['defaultgrade']->not_null) || $columns['defaultgrade']->default_value !== '1.0000000')) {
            // defaultgrade should be unsigned NOT NULL DEFAULT '1.0000000'
            // Fixed in earlier upgrade code
            $field = new xmldb_field('defaultgrade', XMLDB_TYPE_NUMBER, '12, 7', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '1.0000000', 'generalfeedbackformat');
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_default($table, $field);
            }
        }
        // Check if we need to fix penalty
        if (array_key_exists('penalty', $columns) && (empty($columns['penalty']->not_null) || $columns['penalty']->default_value !== '0.1000000')) {
            // penalty should be NOT NULL DEFAULT '0.1000000'
            // Fixed in earlier upgrade code
            $field = new xmldb_field('penalty', XMLDB_TYPE_NUMBER, '12, 7', null, XMLDB_NOTNULL, null, '0.1000000', 'defaultgrade');
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_default($table, $field);
            }
        }
        upgrade_main_savepoint(true, 2011011408);
    }
    if ($oldversion < 2011011409) {
        // Fix question_answers in the post table after upgrade from 1.9
        $columns = $DB->get_columns('question_answers');
        $table = new xmldb_table('question_answers');
        if (array_key_exists('fraction', $columns) && empty($columns['fraction']->not_null)) {
            // fraction should be NOT NULL DEFAULT '0.0000000',
            // Fixed in earlier upgrade code
            $field = new xmldb_field('fraction', XMLDB_TYPE_NUMBER, '12, 7', null, XMLDB_NOTNULL, null, '0', 'feedback');
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_default($table, $field);
            }
        }
        upgrade_main_savepoint(true, 2011011409);
    }
    if ($oldversion < 2011011410) {
        // Fix question_sessions in the post table after upgrade from 1.9
        $columns = $DB->get_columns('question_sessions');
        $table = new xmldb_table('question_sessions');
        // Check if we need to fix sumpenalty
        if (array_key_exists('sumpenalty', $columns) && empty($columns['sumpenalty']->not_null)) {
            // sumpenalty should be NOT NULL DEFAULT '0.0000000',
            // Fixed in earlier upgrade code
            $field = new xmldb_field('sumpenalty', XMLDB_TYPE_NUMBER, '12, 7', null, XMLDB_NOTNULL, null, '0', 'newgraded');
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_default($table, $field);
            }
        }
        upgrade_main_savepoint(true, 2011011410);
    }
    if ($oldversion < 2011011411) {
        // Fix question_states in the post table after upgrade from 1.9
        $columns = $DB->get_columns('question_states');
        $table = new xmldb_table('question_states');
        // Check if we need to fix grade
        if (array_key_exists('grade', $columns) && empty($columns['grade']->not_null)) {
            // grade should be NOT NULL DEFAULT '0.0000000',
            // Fixed in earlier upgrade code
            $field = new xmldb_field('grade', XMLDB_TYPE_NUMBER, '12, 7', null, XMLDB_NOTNULL, null, '0', 'event');
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_default($table, $field);
            }
        }
        // Check if we need to fix raw_grade
        if (array_key_exists('raw_grade', $columns) && empty($columns['raw_grade']->not_null)) {
            // raw_grade should be NOT NULL DEFAULT '0.0000000',
            // Fixed in earlier upgrade code
            $field = new xmldb_field('raw_grade', XMLDB_TYPE_NUMBER, '12, 7', null, XMLDB_NOTNULL, null, '0', 'grade');
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_default($table, $field);
            }
        }
        // Check if we need to fix raw_grade
        if (array_key_exists('penalty', $columns) && empty($columns['penalty']->not_null)) {
            // penalty should be NOT NULL DEFAULT '0.0000000',
            // Fixed in earlier upgrade code
            $field = new xmldb_field('penalty', XMLDB_TYPE_NUMBER, '12, 7', null, XMLDB_NOTNULL, null, '0', 'raw_grade');
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_default($table, $field);
            }
        }
        upgrade_main_savepoint(true, 2011011411);
    }
    if ($oldversion < 2011011412) {
        // Fix tag_instance in the post table after upgrade from 1.9
        $columns = $DB->get_columns('tag_instance');
        $table = new xmldb_table('tag_instance');
        // Check if we need to fix tiuserid
        if (array_key_exists('tiuserid', $columns) && !empty($columns['tiuserid']->has_default)) {
            // tiuserid should have no default
            // Fixed in earlier upgrade code
            $field = new xmldb_field('tiuserid', XMLDB_TYPE_INTEGER, 10, XMLDB_UNSIGNED, XMLDB_NOTNULL, null, 0, 'itemid');
            $index = new xmldb_index('itemtype-itemid-tagid-tiuserid', XMLDB_INDEX_UNIQUE, array('itemtype', 'itemid', 'tagid', 'tiuserid'));
            if ($dbman->index_exists($table, $index)) {
                $dbman->drop_index($table, $index);
            }
            if ($dbman->field_exists($table, $field)) {
                $dbman->change_field_default($table, $field);
            }
            $dbman->add_index($table, $index);
        }
        upgrade_main_savepoint(true, 2011011412);
    }
    if ($oldversion < 2011011413) {
        // Fix user_info_field in the post table after upgrade from 1.9
        $table = new xmldb_table('user_info_field');
        // Missing field descriptionformat
        // Fixed in earlier upgrade code
        $field = new xmldb_field('descriptionformat', XMLDB_TYPE_INTEGER, 2, XMLDB_UNSIGNED, XMLDB_NOTNULL, null, 0, 'description');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        upgrade_main_savepoint(true, 2011011413);
    }
    if ($oldversion < 2011011414) {
        // Drop the adodb_logsql table if it exists... it was never actually used anyway.
        $table = new xmldb_table('adodb_logsql');
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        upgrade_main_savepoint(true, 2011011414);
    }
    if ($oldversion < 2011011415) {
        //create the rating table indexes if required
        $table = new xmldb_table('rating');
        $index = new xmldb_index('itemid', XMLDB_INDEX_NOTUNIQUE, array('itemid'));
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
            $key = new xmldb_key('contextid', XMLDB_KEY_FOREIGN, array('contextid'), 'context', array('id'));
            $dbman->add_key($table, $key);
            $key = new xmldb_key('userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
            $dbman->add_key($table, $key);
        }
        upgrade_main_savepoint(true, 2011011415);
    }
    if ($oldversion < 2011012400) {
        // Clean up the old progress tracked roles setting, no longer used (replaced by enrolment)
        unset_config('progresstrackedroles');
        upgrade_main_savepoint(true, 2011012400);
    }
    if ($oldversion < 2011012500) {
        $columns = $DB->get_columns('tag_instance');
        $table = new xmldb_table('tag_instance');
        // Drop and recreate index if tiuserid doesn't have default value
        if (array_key_exists('tiuserid', $columns) && empty($columns['tiuserid']->has_default)) {
            // Define index itemtype-itemid-tagid-tiuserid (unique) to be dropped form tag_instance
            $index = new xmldb_index('itemtype-itemid-tagid-tiuserid', XMLDB_INDEX_UNIQUE, array('itemtype', 'itemid', 'tagid', 'tiuserid'));
            // Conditionally launch drop index itemtype-itemid-tagid-tiuserid
            if ($dbman->index_exists($table, $index)) {
                $dbman->drop_index($table, $index);
            }
            // Changing the default of field tiuserid on table tag_instance to 0
            $field = new xmldb_field('tiuserid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'itemid');
            // Launch change of default for field tiuserid
            $dbman->change_field_default($table, $field);
            $index = new xmldb_index('itemtype-itemid-tagid-tiuserid', XMLDB_INDEX_UNIQUE, array('itemtype', 'itemid', 'tagid', 'tiuserid'));
            // Conditionally launch add index itemtype-itemid-tagid-tiuserid
            if (!$dbman->index_exists($table, $index)) {
                $dbman->add_index($table, $index);
            }
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2011012500);
    }
    if ($oldversion < 2011012501) {
        //add the index userfieldidx (not unique) to user_info_data
        $table = new xmldb_table('user_info_data');
        $index = new xmldb_index('userfieldidx', XMLDB_INDEX_NOTUNIQUE, array('userid', 'fieldid'));
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        upgrade_main_savepoint(true, 2011012501);
    }
    if ($oldversion < 2011020200.01) {
        // Define field targetversion to be added to upgrade_log
        $table = new xmldb_table('upgrade_log');
        $field = new xmldb_field('targetversion', XMLDB_TYPE_CHAR, '100', null, null, null, null, 'version');
        // Conditionally launch add field targetversion
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2011020200.01);
    }
    if ($oldversion < 2011020900.07) {
        $DB->delete_records('course_display', array('display' => 0));
        upgrade_main_savepoint(true, 2011020900.07);
    }
    if ($oldversion < 2011020900.08) {
        // Define field secret to be added to registration_hubs
        $table = new xmldb_table('registration_hubs');
        $field = new xmldb_field('secret', XMLDB_TYPE_CHAR, '255', null, null, null, $CFG->siteidentifier, 'confirmed');
        // Conditionally launch add field secret
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2011020900.08);
    }
    if ($oldversion < 2011022100.01) {
        // hack alert: inject missing version of manual auth_plugin,
        //             we need to do it so that we may use upgrade.php there
        set_config('version', 2011022100, 'auth_manual');
        upgrade_main_savepoint(true, 2011022100.01);
    }
    if ($oldversion < 2011052300.0) {
        $table = new xmldb_table('rating');
        // Add the component field to the ratings table
        upgrade_set_timeout(60 * 20);
        $field = new xmldb_field('component', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, 'unknown', 'contextid');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Add the ratingarea field to the ratings table
        upgrade_set_timeout(60 * 20);
        $field = new xmldb_field('ratingarea', XMLDB_TYPE_CHAR, '50', null, XMLDB_NOTNULL, null, 'unknown', 'component');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        upgrade_main_savepoint(true, 2011052300.0);
    }
    if ($oldversion < 2011052300.01) {
        // Define index uniqueuserrating (unique) to be added to rating
        $table = new xmldb_table('rating');
        $index = new xmldb_index('uniqueuserrating', XMLDB_INDEX_NOTUNIQUE, array('component', 'ratingarea', 'contextid', 'itemid'));
        // Conditionally launch add index uniqueuserrating
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2011052300.01);
    }
    if ($oldversion < 2011052300.02) {
        // Define index itemid (not unique) to be dropped form rating
        $table = new xmldb_table('rating');
        $index = new xmldb_index('itemid', XMLDB_INDEX_NOTUNIQUE, array('itemid'));
        // Conditionally launch drop index itemid
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2011052300.02);
    }
    // Question engine 2 changes (14) start here
    if ($oldversion < 2011060300) {
        // Changing the default of field penalty on table question to 0.3333333
        $table = new xmldb_table('question');
        $field = new xmldb_field('penalty');
        $field->set_attributes(XMLDB_TYPE_NUMBER, '12, 7', null, XMLDB_NOTNULL, null, '0.3333333');
        // Launch change of default for field penalty
        $dbman->change_field_default($table, $field);
        // quiz savepoint reached
        upgrade_main_savepoint(true, 2011060300);
    }
    if ($oldversion < 2011060301) {
        // Rename field defaultgrade on table question to defaultmark
        $table = new xmldb_table('question');
        $field = new xmldb_field('defaultgrade');
        $field->set_attributes(XMLDB_TYPE_NUMBER, '12, 7', null, XMLDB_NOTNULL, null, '1');
        // Launch rename field defaultmark
        if ($dbman->field_exists($table, $field)) {
            $dbman->rename_field($table, $field, 'defaultmark');
        }
        // quiz savepoint reached
        upgrade_main_savepoint(true, 2011060301);
    }
    if ($oldversion < 2011060302) {
        // Rename the question_attempts table to question_usages.
        $table = new xmldb_table('question_attempts');
        if (!$dbman->table_exists('question_usages')) {
            $dbman->rename_table($table, 'question_usages');
        }
        // quiz savepoint reached
        upgrade_main_savepoint(true, 2011060302);
    }
    if ($oldversion < 2011060303) {
        // Rename the modulename field to component ...
        $table = new xmldb_table('question_usages');
        $field = new xmldb_field('modulename');
        $field->set_attributes(XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null, 'contextid');
        if ($dbman->field_exists($table, $field)) {
            $dbman->rename_field($table, $field, 'component');
        }
        // ... and update its contents.
        $DB->set_field('question_usages', 'component', 'mod_quiz', array('component' => 'quiz'));
        // Add the contextid field.
        $field = new xmldb_field('contextid');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null, 'id');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
            // And populate it.
            $quizmoduleid = $DB->get_field('modules', 'id', array('name' => 'quiz'));
            $DB->execute("\n                UPDATE {question_usages} SET contextid = (\n                    SELECT ctx.id\n                    FROM {context} ctx\n                    JOIN {course_modules} cm ON cm.id = ctx.instanceid AND cm.module = {$quizmoduleid}\n                    JOIN {quiz_attempts} quiza ON quiza.quiz = cm.instance\n                    WHERE ctx.contextlevel = " . CONTEXT_MODULE . "\n                    AND quiza.uniqueid = {question_usages}.id\n                )\n            ");
            // It seems that it is possible, in old versions of Moodle, for a
            // quiz_attempt to be deleted while the question_attempt remains.
            // In that situation we still get NULLs left in the table, which
            // causes the upgrade to break at the next step. To avoid breakage,
            // without risking dataloss, we just replace all NULLs with 0 here.
            $DB->set_field_select('question_usages', 'contextid', 0, 'contextid IS NULL');
            // Then make it NOT NULL.
            $field = new xmldb_field('contextid');
            $field->set_attributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null, 'id');
            $dbman->change_field_notnull($table, $field);
        }
        // Add the preferredbehaviour column. Populate it with a dummy value
        // for now. We will fill in the appropriate behaviour name when
        // updating all the rest of the attempt data.
        $field = new xmldb_field('preferredbehaviour');
        if (!$dbman->field_exists($table, $field)) {
            $field->set_attributes(XMLDB_TYPE_CHAR, '32', null, XMLDB_NOTNULL, null, 'to_be_set_later', 'component');
            $dbman->add_field($table, $field);
            // Then remove the default value, now the column is populated.
            $field = new xmldb_field('preferredbehaviour');
            $field->set_attributes(XMLDB_TYPE_CHAR, '32', null, XMLDB_NOTNULL, null, null, 'component');
            $dbman->change_field_default($table, $field);
        }
        // quiz savepoint reached
        upgrade_main_savepoint(true, 2011060303);
    }
    if ($oldversion < 2011060304) {
        // Define key contextid (foreign) to be added to question_usages
        $table = new xmldb_table('question_usages');
        $key = new XMLDBKey('contextid');
        $key->set_attributes(XMLDB_KEY_FOREIGN, array('contextid'), 'context', array('id'));
        // Launch add key contextid
        $dbman->add_key($table, $key);
        // quiz savepoint reached
        upgrade_main_savepoint(true, 2011060304);
    }
    if ($oldversion < 2011060305) {
        // Changing precision of field component on table question_usages to (255)
        // This was missed during the upgrade from old versions.
        $table = new xmldb_table('question_usages');
        $field = new xmldb_field('component');
        $field->set_attributes(XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null, 'contextid');
        // Launch change of precision for field component
        $dbman->change_field_precision($table, $field);
        // quiz savepoint reached
        upgrade_main_savepoint(true, 2011060305);
    }
    if ($oldversion < 2011060306) {
        // Define table question_attempts to be created
        $table = new xmldb_table('question_attempts');
        if (!$dbman->table_exists($table)) {
            // Adding fields to table question_attempts
            $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
            $table->add_field('questionusageid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
            $table->add_field('slot', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
            $table->add_field('behaviour', XMLDB_TYPE_CHAR, '32', null, XMLDB_NOTNULL, null, null);
            $table->add_field('questionid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
            $table->add_field('maxmark', XMLDB_TYPE_NUMBER, '12, 7', null, XMLDB_NOTNULL, null, null);
            $table->add_field('minfraction', XMLDB_TYPE_NUMBER, '12, 7', null, XMLDB_NOTNULL, null, null);
            $table->add_field('flagged', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
            $table->add_field('questionsummary', XMLDB_TYPE_TEXT, 'small', null, null, null, null);
            $table->add_field('rightanswer', XMLDB_TYPE_TEXT, 'small', null, null, null, null);
            $table->add_field('responsesummary', XMLDB_TYPE_TEXT, 'small', null, null, null, null);
            $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
            // Adding keys to table question_attempts
            $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
            $table->add_key('questionid', XMLDB_KEY_FOREIGN, array('questionid'), 'question', array('id'));
            $table->add_key('questionusageid', XMLDB_KEY_FOREIGN, array('questionusageid'), 'question_usages', array('id'));
            // Adding indexes to table question_attempts
            $table->add_index('questionusageid-slot', XMLDB_INDEX_UNIQUE, array('questionusageid', 'slot'));
            // Launch create table for question_attempts
            $dbman->create_table($table);
        }
        // quiz savepoint reached
        upgrade_main_savepoint(true, 2011060306);
    }
    if ($oldversion < 2011060307) {
        // Define table question_attempt_steps to be created
        $table = new xmldb_table('question_attempt_steps');
        if (!$dbman->table_exists($table)) {
            // Adding fields to table question_attempt_steps
            $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
            $table->add_field('questionattemptid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
            $table->add_field('sequencenumber', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
            $table->add_field('state', XMLDB_TYPE_CHAR, '13', null, XMLDB_NOTNULL, null, null);
            $table->add_field('fraction', XMLDB_TYPE_NUMBER, '12, 7', null, null, null, null);
            $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
            $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
            // Adding keys to table question_attempt_steps
            $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
            $table->add_key('questionattemptid', XMLDB_KEY_FOREIGN, array('questionattemptid'), 'question_attempts_new', array('id'));
            $table->add_key('userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
            // Adding indexes to table question_attempt_steps
            $table->add_index('questionattemptid-sequencenumber', XMLDB_INDEX_UNIQUE, array('questionattemptid', 'sequencenumber'));
            // Launch create table for question_attempt_steps
            $dbman->create_table($table);
        }
        // quiz savepoint reached
        upgrade_main_savepoint(true, 2011060307);
    }
    if ($oldversion < 2011060308) {
        // Define table question_attempt_step_data to be created
        $table = new xmldb_table('question_attempt_step_data');
        if (!$dbman->table_exists($table)) {
            // Adding fields to table question_attempt_step_data
            $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
            $table->add_field('attemptstepid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
            $table->add_field('name', XMLDB_TYPE_CHAR, '32', null, XMLDB_NOTNULL, null, null);
            $table->add_field('value', XMLDB_TYPE_TEXT, 'small', null, null, null, null);
            // Adding keys to table question_attempt_step_data
            $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
            $table->add_key('attemptstepid', XMLDB_KEY_FOREIGN, array('attemptstepid'), 'question_attempt_steps', array('id'));
            // Adding indexes to table question_attempt_step_data
            $table->add_index('attemptstepid-name', XMLDB_INDEX_UNIQUE, array('attemptstepid', 'name'));
            // Launch create table for question_attempt_step_data
            $dbman->create_table($table);
        }
        // quiz savepoint reached
        upgrade_main_savepoint(true, 2011060308);
    }
    if ($oldversion < 2011060309) {
        // Define table question_hints to be created
        $table = new xmldb_table('question_hints');
        // Adding fields to table question_hints
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('questionid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('hint', XMLDB_TYPE_TEXT, 'small', null, XMLDB_NOTNULL, null, null);
        $table->add_field('hintformat', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('shownumcorrect', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('clearwrong', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, null, null, null);
        $table->add_field('options', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        // Adding keys to table question_hints
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('questionid', XMLDB_KEY_FOREIGN, array('questionid'), 'question', array('id'));
        // Conditionally launch create table for question_hints
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // quiz savepoint reached
        upgrade_main_savepoint(true, 2011060309);
    }
    if ($oldversion < 2011060310) {
        // In the past, question_answer fractions were stored with rather
        // sloppy rounding. Now update them to the new standard of 7 d.p.
        $changes = array('-0.66666' => '-0.6666667', '-0.33333' => '-0.3333333', '-0.16666' => '-0.1666667', '-0.142857' => '-0.1428571', '0.11111' => '0.1111111', '0.142857' => '0.1428571', '0.16666' => '0.1666667', '0.33333' => '0.3333333', '0.333333' => '0.3333333', '0.66666' => '0.6666667');
        foreach ($changes as $from => $to) {
            $DB->set_field('question_answers', 'fraction', $to, array('fraction' => $from));
        }
        // quiz savepoint reached
        upgrade_main_savepoint(true, 2011060310);
    }
    if ($oldversion < 2011060311) {
        // In the past, question penalties were stored with rather
        // sloppy rounding. Now update them to the new standard of 7 d.p.
        $DB->set_field('question', 'penalty', 0.3333333, array('penalty' => 33.3));
        $DB->set_field_select('question', 'penalty', 0.3333333, 'penalty >= 0.33 AND penalty <= 0.34');
        $DB->set_field_select('question', 'penalty', 0.6666666999999999, 'penalty >= 0.66 AND penalty <= 0.67');
        $DB->set_field_select('question', 'penalty', 1, 'penalty > 1');
        // quiz savepoint reached
        upgrade_main_savepoint(true, 2011060311);
    }
    if ($oldversion < 2011060312) {
        // Define field hintformat to be added to question_hints table.
        $table = new xmldb_table('question_hints');
        $field = new xmldb_field('hintformat', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        // Conditionally launch add field partiallycorrectfeedbackformat
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        upgrade_main_savepoint(true, 2011060312);
    }
    if ($oldversion < 2011060313) {
        // Define field variant to be added to question_attempts
        $table = new xmldb_table('question_attempts');
        $field = new xmldb_field('variant', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, 1, 'questionid');
        // Launch add field component
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2011060313);
    }
    // Question engine 2 changes (14) end here
    if ($oldversion < 2011060500) {
        // Define index uniqueuserrating (not unique) to be dropped from rating
        $table = new xmldb_table('rating');
        $index = new xmldb_index('uniqueuserrating', XMLDB_INDEX_NOTUNIQUE, array('component', 'ratingarea', 'contextid', 'itemid'));
        // Drop dependent index before changing fields specs
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Changing the default of field component on table rating to drop it
        $field = new xmldb_field('component', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null, 'contextid');
        // Launch change of default for field component
        $dbman->change_field_default($table, $field);
        // Changing the default of field ratingarea on table rating to drop it
        $field = new xmldb_field('ratingarea', XMLDB_TYPE_CHAR, '50', null, XMLDB_NOTNULL, null, null, 'component');
        // Launch change of default for field ratingarea
        $dbman->change_field_default($table, $field);
        // Add dependent index back
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2011060500);
    }
    if ($oldversion < 2011060800) {
        // Add enabled field to message_processors
        $table = new xmldb_table('message_processors');
        $field = new xmldb_field('enabled');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '1', 'name');
        // Launch add field addition
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Populate default messaging settings
        upgrade_populate_default_messaging_prefs();
        upgrade_main_savepoint(true, 2011060800);
    }
    if ($oldversion < 2011060800.01) {
        //TODO: put the right latest version
        // Define field shortname to be added to external_services
        $table = new xmldb_table('external_services');
        $field = new xmldb_field('shortname', XMLDB_TYPE_CHAR, '255', null, null, null, null, 'timemodified');
        // Conditionally launch add field shortname
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2011060800.01);
    }
    if ($oldversion < 2011062000.01) {
        // Changing sign of field minfraction on table question_attempts to signed
        $table = new xmldb_table('question_attempts');
        $field = new xmldb_field('minfraction', XMLDB_TYPE_NUMBER, '12, 7', null, XMLDB_NOTNULL, null, null, 'maxmark');
        // Launch change of sign for field minfraction
        $dbman->change_field_unsigned($table, $field);
        // Main savepoint reached
        upgrade_main_savepoint(true, 2011062000.01);
    }
    // Signed fixes - MDL-28032
    if ($oldversion < 2011062400.02) {
        // Changing sign of field defaultmark on table question to unsigned
        $table = new xmldb_table('question');
        $field = new xmldb_field('defaultmark', XMLDB_TYPE_NUMBER, '12, 7', null, XMLDB_NOTNULL, null, '1', 'generalfeedbackformat');
        // Launch change of sign for field defaultmark
        $dbman->change_field_unsigned($table, $field);
        // Main savepoint reached
        upgrade_main_savepoint(true, 2011062400.02);
    }
    if ($oldversion < 2011062400.03) {
        // Completion system has issue in which possible duplicate rows are
        // added to the course_modules_completion table. This change deletes
        // the older version of duplicate rows and replaces an index with a
        // unique one so it won't happen again.
        // This would have been a single query but because MySQL is a PoS
        // and can't do subqueries in DELETE, I have made it into two. The
        // system is unlikely to run out of memory as only IDs are stored in
        // the array.
        // Find all rows cmc1 where there is another row cmc2 with the
        // same user id and the same coursemoduleid, but a higher id (=> newer,
        // meaning that cmc1 is an older row).
        $rs = $DB->get_recordset_sql("\nSELECT DISTINCT\n    cmc1.id\nFROM\n    {course_modules_completion} cmc1\n    JOIN {course_modules_completion} cmc2\n        ON cmc2.userid = cmc1.userid\n        AND cmc2.coursemoduleid = cmc1.coursemoduleid\n        AND cmc2.id > cmc1.id");
        $deleteids = array();
        foreach ($rs as $row) {
            $deleteids[] = $row->id;
        }
        $rs->close();
        // Note: SELECT part performance tested on table with ~7m
        // rows of which ~15k match, only took 30 seconds so probably okay.
        // Delete all those rows
        $DB->delete_records_list('course_modules_completion', 'id', $deleteids);
        // Define index userid (not unique) to be dropped form course_modules_completion
        $table = new xmldb_table('course_modules_completion');
        $index = new xmldb_index('userid', XMLDB_INDEX_NOTUNIQUE, array('userid'));
        // Conditionally launch drop index userid
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Define index userid-coursemoduleid (unique) to be added to course_modules_completion
        $index = new xmldb_index('userid-coursemoduleid', XMLDB_INDEX_UNIQUE, array('userid', 'coursemoduleid'));
        // Conditionally launch add index userid-coursemoduleid
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        upgrade_main_savepoint(true, 2011062400.03);
    }
    // Moodle v2.1.0 release upgrade line
    // Put any upgrade step following this
    return true;
}
Example #16
0
/**
 * This file keeps track of upgrades to the certificate module
 *
 * @package    mod_certificate
 * @copyright  Mark Nelson <*****@*****.**>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
function xmldb_certificate_upgrade($oldversion = 0)
{
    global $CFG, $THEME, $DB;
    $dbman = $DB->get_manager();
    // ===== 1.9.0 or older upgrade line ======//
    if ($oldversion < 2007061300) {
        // Add new fields to certificate table
        $table = new xmldb_table('certificate');
        $field = new xmldb_field('emailothers');
        $field->set_attributes(XMLDB_TYPE_TEXT, 'small', null, null, null, null, 'emailteachers');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $table = new xmldb_table('certificate');
        $field = new xmldb_field('printhours');
        $field->set_attributes(XMLDB_TYPE_TEXT, 'small', null, null, null, null, 'gradefmt');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $table = new xmldb_table('certificate');
        $field = new xmldb_field('lockgrade');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'printhours');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $table = new xmldb_table('certificate');
        $field = new xmldb_field('requiredgrade');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '4', null, XMLDB_NOTNULL, null, '0', 'lockgrade');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Rename field save to savecert
        $field = new xmldb_field('save');
        if ($dbman->field_exists($table, $field)) {
            $field->set_attributes(XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0', 'emailothers');
            // Launch rename field savecert
            $dbman->rename_field($table, $field, 'savecert');
        } else {
            $field = new xmldb_field('savecert');
            $field->set_attributes(XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0', 'emailothers');
            $dbman->add_field($table, $field);
        }
        // Certificate savepoint reached
        upgrade_mod_savepoint(true, 2007061300, 'certificate');
    }
    if ($oldversion < 2007061301) {
        $table = new xmldb_table('certificate_linked_modules');
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null, null);
        $table->add_field('certificate_id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'id');
        $table->add_field('linkid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'certificate_id');
        $table->add_field('linkgrade', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'linkid');
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'linkgrade');
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'), null, null);
        $table->add_index('certificate_id', XMLDB_INDEX_NOTUNIQUE, array('certificate_id'));
        $table->add_index('linkid', XMLDB_INDEX_NOTUNIQUE, array('linkid'));
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Certificate savepoint reached
        upgrade_mod_savepoint(true, 2007061301, 'certificate');
    }
    if ($oldversion < 2007102800) {
        // Add new fields to certificate table
        $table = new xmldb_table('certificate');
        $field = new xmldb_field('reportcert');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0', 'savecert');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $table = new xmldb_table('certificate_issues');
        $field = new xmldb_field('reportgrade');
        $field->set_attributes(XMLDB_TYPE_CHAR, '10', null, null, null, null, 'certdate');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Certificate savepoint reached
        upgrade_mod_savepoint(true, 2007102800, 'certificate');
    }
    if ($oldversion < 2007102806) {
        // Add new fields to certificate table
        $table = new xmldb_table('certificate');
        $field = new xmldb_field('printoutcome');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0', 'gradefmt');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Certificate savepoint reached
        upgrade_mod_savepoint(true, 2007102806, 'certificate');
    }
    if ($oldversion < 2008080904) {
        // Add new fields to certificate table if they dont already exist
        $table = new xmldb_table('certificate');
        $field = new xmldb_field('intro');
        $field->set_attributes(XMLDB_TYPE_TEXT, 'small', null, null, null, null, 'name');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Certificate savepoint reached
        upgrade_mod_savepoint(true, 2008080904, 'certificate');
    }
    //===== 2.0 or older upgrade line ======//
    // Note, fresh 1.9 installs add the version 2009080900, so they miss this when upgrading from 1.9 -> 2.0.
    if ($oldversion < 2009062900) {
        // Add new field to certificate table
        $table = new xmldb_table('certificate');
        $field = new xmldb_field('introformat', XMLDB_TYPE_INTEGER, '4', null, XMLDB_NOTNULL, null, '0', 'intro');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('orientation', XMLDB_TYPE_CHAR, '10', null, XMLDB_NOTNULL, null, ' ', 'certificatetype');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('reissuecert', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0', 'reportcert');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Set default orientation accordingly
        $DB->set_field('certificate', 'orientation', 'P', array('certificatetype' => 'portrait'));
        $DB->set_field('certificate', 'orientation', 'P', array('certificatetype' => 'letter_portrait'));
        $DB->set_field('certificate', 'orientation', 'P', array('certificatetype' => 'unicode_portrait'));
        $DB->set_field('certificate', 'orientation', 'L', array('certificatetype' => 'landscape'));
        $DB->set_field('certificate', 'orientation', 'L', array('certificatetype' => 'letter_landscape'));
        $DB->set_field('certificate', 'orientation', 'L', array('certificatetype' => 'unicode_landscape'));
        // Update all the certificate types
        $DB->set_field('certificate', 'certificatetype', 'A4_non_embedded', array('certificatetype' => 'landscape'));
        $DB->set_field('certificate', 'certificatetype', 'A4_non_embedded', array('certificatetype' => 'portrait'));
        $DB->set_field('certificate', 'certificatetype', 'A4_embedded', array('certificatetype' => 'unicode_landscape'));
        $DB->set_field('certificate', 'certificatetype', 'A4_embedded', array('certificatetype' => 'unicode_portrait'));
        $DB->set_field('certificate', 'certificatetype', 'letter_non_embedded', array('certificatetype' => 'letter_landscape'));
        $DB->set_field('certificate', 'certificatetype', 'letter_non_embedded', array('certificatetype' => 'letter_portrait'));
        // savepoint reached
        upgrade_mod_savepoint(true, 2009062900, 'certificate');
    }
    if ($oldversion < 2011030105) {
        // Define field id to be added to certificate
        $table = new xmldb_table('certificate');
        $field = new xmldb_field('introformat', XMLDB_TYPE_INTEGER, '4', null, XMLDB_NOTNULL, null, 0, 'intro');
        // Conditionally launch add field id
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Certificate savepoint reached
        upgrade_mod_savepoint(true, 2011030105, 'certificate');
    }
    // The Moodle 2.0 CVS certificate version sets it to 2011110101, if the user performed an upgrade
    // then this upgrade will take care of several issues, if it's a fresh install then nothing is done.
    if ($oldversion < 2011110102) {
        require_once $CFG->libdir . '/conditionlib.php';
        $table = new xmldb_table('certificate');
        // It is possible for these fields not to be added, ever, it is included in the upgrade
        // process but fresh certificate 1.9 install from CVS MOODLE_19_STABLE set the Moodle version
        // to 2009080900, which means it missed all the earlier code written for upgrading to 2.0.
        $reissuefield = new xmldb_field('reissuecert', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0', 'reportcert');
        $orientationfield = new xmldb_field('orientation', XMLDB_TYPE_CHAR, '10', null, XMLDB_NOTNULL, null, ' ', 'certificatetype');
        // Have to check, may be added during earlier upgrade, or may be missing due to not being included in install.xml
        if (!$dbman->field_exists($table, $reissuefield)) {
            $dbman->add_field($table, $reissuefield);
        }
        if (!$dbman->field_exists($table, $orientationfield)) {
            $dbman->add_field($table, $orientationfield);
        }
        // Fresh 2.0 installs won't have this table, but upgrades from 1.9 will
        if ($dbman->table_exists('certificate_linked_modules')) {
            // No longer need lock grade, or required grade, but first need to
            // convert so that the restrictions are still in place for Moodle 2.0
            if ($certs = $DB->get_records('certificate')) {
                foreach ($certs as $cert) {
                    if ($cert->lockgrade == 0) {
                        // Can skip this certificate, no course grade required
                        continue;
                    }
                    if (!($cm = get_coursemodule_from_instance('certificate', $cert->id))) {
                        // Not valid skip it
                        continue;
                    }
                    if (!($gradeitem = $DB->get_record('grade_items', array('courseid' => $cm->course, 'itemtype' => 'course')))) {
                        // Not valid skip it
                        continue;
                    }
                    $condition_info = new condition_info($cm, CONDITION_MISSING_EVERYTHING);
                    $condition_info->add_grade_condition($gradeitem->id, $cert->requiredgrade, '110');
                }
            }
            // Fresh installs won't have this table, but upgrades will
            // Lock grade and required grade field are not needed anymore
            if ($dbman->field_exists($table, 'lockgrade')) {
                $field = new xmldb_field('lockgrade');
                $dbman->drop_field($table, $field);
            }
            if ($dbman->field_exists($table, 'requiredgrade')) {
                $field = new xmldb_field('requiredgrade');
                $dbman->drop_field($table, $field);
            }
            // Now we need to loop through the restrictions in the certificate_linked_modules
            // table and convert it into the new Moodle 2.0 restrictions
            if ($certlinks = $DB->get_records('certificate_linked_modules')) {
                foreach ($certlinks as $link) {
                    // If the link id is '-1' then the setting applies to the time spent in the course and is not
                    // related to a module, meaning we can skip it for this section
                    if ($link->linkid == '-1') {
                        continue;
                    }
                    // Get the course module
                    if (!($cm = get_coursemodule_from_instance('certificate', $link->certificate_id))) {
                        // Not valid skip it
                        continue;
                    }
                    // Get grade item for module specified - is there an API function for this ??
                    $sql = "SELECT gi.id\n                            FROM {course_modules} cm\n                            INNER JOIN {modules} m\n                            ON cm.module = m.id\n                            INNER JOIN {grade_items} gi\n                            ON m.name = gi.itemmodule\n                            WHERE cm.id = :cmid\n                            AND cm.course = :courseid\n                            AND cm.instance = gi.iteminstance";
                    if (!($gradeitem = $DB->get_record_sql($sql, array('cmid' => $link->linkid, 'courseid' => $cm->course)))) {
                        // Not valid skip it
                        continue;
                    }
                    $condition_info = new condition_info($cm, CONDITION_MISSING_EVERYTHING);
                    $condition_info->add_grade_condition($gradeitem->id, $link->linkgrade, '110', true);
                }
            }
        }
        // Certificate savepoint reached
        upgrade_mod_savepoint(true, 2011110102, 'certificate');
    }
    // Note - the date has not changed as it has been set in the future, so I am incrementing
    // last digits. Actual date - 15/09/11
    if ($oldversion < 2011110103) {
        // New orientation field needs a value in order to view the cert, otherwise you get
        // an issue with FPDF and invalid orientation. This should be done during the upgrade,
        // but due to version number issues it is possible it was not executed, so do it now.
        $DB->set_field('certificate', 'orientation', 'P', array('certificatetype' => 'portrait'));
        $DB->set_field('certificate', 'orientation', 'P', array('certificatetype' => 'letter_portrait'));
        $DB->set_field('certificate', 'orientation', 'P', array('certificatetype' => 'unicode_portrait'));
        $DB->set_field('certificate', 'orientation', 'L', array('certificatetype' => 'landscape'));
        $DB->set_field('certificate', 'orientation', 'L', array('certificatetype' => 'letter_landscape'));
        $DB->set_field('certificate', 'orientation', 'L', array('certificatetype' => 'unicode_landscape'));
        // If the certificate type does not match any of the orientations in the above then set to 'L'
        $sql = "UPDATE {certificate}\n                SET orientation = 'L'\n                WHERE orientation = ''";
        $DB->execute($sql);
        // Update all the certificate types
        $DB->set_field('certificate', 'certificatetype', 'A4_non_embedded', array('certificatetype' => 'landscape'));
        $DB->set_field('certificate', 'certificatetype', 'A4_non_embedded', array('certificatetype' => 'portrait'));
        $DB->set_field('certificate', 'certificatetype', 'A4_embedded', array('certificatetype' => 'unicode_landscape'));
        $DB->set_field('certificate', 'certificatetype', 'A4_embedded', array('certificatetype' => 'unicode_portrait'));
        $DB->set_field('certificate', 'certificatetype', 'letter_non_embedded', array('certificatetype' => 'letter_landscape'));
        $DB->set_field('certificate', 'certificatetype', 'letter_non_embedded', array('certificatetype' => 'letter_portrait'));
        // Certificate savepoint reached
        upgrade_mod_savepoint(true, 2011110103, 'certificate');
    }
    if ($oldversion < 2012022001) {
        // CONTRIB-3470 - certdate remaining 0 on issued certificates, need to update
        $sql = "UPDATE {certificate_issues}\n                SET certdate = timecreated\n                WHERE certdate = 0";
        $DB->execute($sql);
        // Certificate savepoint reached
        upgrade_mod_savepoint(true, 2012022001, 'certificate');
    }
    if ($oldversion < 2012060901) {
        // Editing this table
        $table = new xmldb_table('certificate');
        // Get rid of the reissue cert column, this was a hack introduced later
        // in 1.9 when the bug was brought up that grades were not refreshing
        // since they were being stored in the issues table.
        // The certificate will now always return the current grade, student name
        // and course name.
        $field = new xmldb_field('reissuecert');
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // The poor certificate_issues table is going to have a lot of
        // duplicates, we don't need that now, just keep the latest one
        $sql = "SELECT MAX(id) id1, MAX(id) as id2\n                FROM {certificate_issues}\n                GROUP BY certificateid, userid";
        if ($arrids = $DB->get_records_sql_menu($sql)) {
            $idstokeep = implode(",", $arrids);
            $sql = "DELETE\n                    FROM {certificate_issues}\n                    WHERE id NOT IN ({$idstokeep})";
            $DB->execute($sql);
        }
        // Going to be editing this table
        $table = new xmldb_table('certificate_issues');
        // Conditionally remove columns no longer needed
        $field = new xmldb_field('studentname');
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        $field = new xmldb_field('classname');
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        $field = new xmldb_field('certdate');
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        $field = new xmldb_field('reportgrade');
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        $field = new xmldb_field('mailed');
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Certificate savepoint reached
        upgrade_mod_savepoint(true, 2012060901, 'certificate');
    }
    if ($oldversion < 2012072501) {
        // Add a column to store the required grade
        $table = new xmldb_table('certificate');
        $requiredtimefield = new xmldb_field('requiredtime', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'delivery');
        if (!$dbman->field_exists($table, $requiredtimefield)) {
            $dbman->add_field($table, $requiredtimefield);
        }
        // If this table still exists, then the install was from a 1.9 version
        if ($dbman->table_exists('certificate_linked_modules')) {
            // Now we need to loop through the restrictions in the certificate_linked_modules
            // table and check if there were any required time conditions
            if ($certlinks = $DB->get_records('certificate_linked_modules')) {
                foreach ($certlinks as $link) {
                    // If the link id is '-1' then the setting applies to the time spent in the course
                    if ($link->linkid == '-1') {
                        // Make sure the certificate exists
                        if ($certificate = $DB->get_record('certificate', array('id' => $link->certificate_id))) {
                            $certificate->requiredtime = $link->linkgrade;
                            $DB->update_record('certificate', $certificate);
                        }
                    }
                }
            }
            // We can now get rid of this table
            $table = new xmldb_table('certificate_linked_modules');
            $dbman->drop_table($table);
        }
        // Certificate savepoint reached
        upgrade_mod_savepoint(true, 2012072501, 'certificate');
    }
    if ($oldversion < 2012082401) {
        $table = new xmldb_table('certificate');
        // Change length of the fields that store images, so longer image names can be stored
        $field = new xmldb_field('borderstyle', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, 0);
        $dbman->change_field_precision($table, $field);
        $field = new xmldb_field('printwmark', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, 0);
        $dbman->change_field_precision($table, $field);
        $field = new xmldb_field('printsignature', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, 0);
        $dbman->change_field_precision($table, $field);
        $field = new xmldb_field('printseal', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, 0);
        $dbman->change_field_precision($table, $field);
        // Change length of fields that are unnecessarily large
        $field = new xmldb_field('printnumber', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, 0, 0);
        $dbman->change_field_precision($table, $field);
        $field = new xmldb_field('printhours', XMLDB_TYPE_CHAR, '255', null, false, 0, 0);
        $dbman->change_field_precision($table, $field);
        $field = new xmldb_field('emailteachers', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, 0, 0);
        $dbman->change_field_precision($table, $field);
        $field = new xmldb_field('savecert', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, 0, 0);
        $dbman->change_field_precision($table, $field);
        $field = new xmldb_field('reportcert', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, 0, 0);
        $dbman->change_field_precision($table, $field);
        // Certificate savepoint reached
        upgrade_mod_savepoint(true, 2012082401, 'certificate');
    }
    if ($oldversion < 2012090901) {
        $table = new xmldb_table('certificate');
        $field = new xmldb_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, 0, 0, 'printseal');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Set the time created to the time modified
        $sql = "UPDATE {certificate}\n                SET timecreated = timemodified";
        $DB->execute($sql);
        // Certificate savepoint reached
        upgrade_mod_savepoint(true, 2012090901, 'certificate');
    }
    if ($oldversion < 2014041802) {
        // Fix previous upgrades.
        $table = new xmldb_table('certificate');
        $field = new xmldb_field('borderstyle', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, 0, '0');
        $dbman->change_field_default($table, $field);
        $field = new xmldb_field('printwmark', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, 0, '0');
        $dbman->change_field_default($table, $field);
        $field = new xmldb_field('printhours', XMLDB_TYPE_CHAR, '255', null, false, 0, null);
        $dbman->change_field_default($table, $field);
        $field = new xmldb_field('printsignature', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, 0, '0');
        $dbman->change_field_default($table, $field);
        $field = new xmldb_field('printseal', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, 0, '0');
        $dbman->change_field_default($table, $field);
        // Certificate savepoint reached.
        upgrade_mod_savepoint(true, 2014041802, 'certificate');
    }
    return true;
}
Example #17
0
 /**
  * Returns the code (array of statements) needed to execute extra statements on table rename
  */
 public function getRenameTableExtraSQL($xmldb_table, $newname)
 {
     $results = array();
     $xmldb_field = new xmldb_field('id');
     // Fields having sequences should be exclusively, id.
     $oldseqname = $this->getSequenceFromDB($xmldb_table);
     $newseqname = $this->getNameForObject($newname, $xmldb_field->getName(), 'seq');
     $oldtriggername = $this->getTriggerFromDB($xmldb_table);
     $newtriggername = $this->getNameForObject($newname, $xmldb_field->getName(), 'trg');
     /// Drop old trigger (first of all)
     $results[] = "DROP TRIGGER " . $oldtriggername;
     /// Rename the sequence, disablig CACHE before and enablig it later
     /// to avoid consuming of values on rename
     $results[] = 'ALTER SEQUENCE ' . $oldseqname . ' NOCACHE';
     $results[] = 'RENAME ' . $oldseqname . ' TO ' . $newseqname;
     $results[] = 'ALTER SEQUENCE ' . $newseqname . ' CACHE ' . $this->sequence_cache_size;
     /// Create new trigger
     $newt = new xmldb_table($newname);
     /// Temp table for trigger code generation
     $results = array_merge($results, $this->getCreateTriggerSQL($newt, $xmldb_field, $newseqname));
     /// Rename all the check constraints in the table
     $oldtablename = $this->getTableName($xmldb_table);
     $newtablename = $this->getTableName($newt);
     $oldconstraintprefix = $this->getNameForObject($xmldb_table->getName(), '');
     $newconstraintprefix = $this->getNameForObject($newt->getName(), '', '');
     if ($constraints = $this->getCheckConstraintsFromDB($xmldb_table)) {
         foreach ($constraints as $constraint) {
             /// Drop the old constraint
             $results[] = 'ALTER TABLE ' . $newtablename . ' DROP CONSTRAINT ' . $constraint->name;
         }
     }
     return $results;
 }
Example #18
0
function xmldb_block_helpmenow_upgrade($oldversion = 0)
{
    global $CFG, $USER, $DB;
    $dbman = $DB->get_manager();
    $result = true;
    if ($result && $oldversion < 2012082101) {
        /// Define field notify to be added to block_helpmenow_message
        $table = new xmldb_table('block_helpmenow_message');
        $field = new xmldb_field('notify');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '1', 'message');
        /// Launch add field notify
        $result = $result && $dbman->add_field($table, $field);
    }
    if ($result && $oldversion < 2012082102) {
        /// system messages are no longer using get_admin()->id for userid, but instead null
        $result = $result && $DB->set_field('block_helpmenow_message', 'userid', null, array('userid' => get_admin()->id));
    }
    if ($result && $oldversion < 2012082400) {
        /// Define field last_message to be added to block_helpmenow_session2user
        $table = new xmldb_table('block_helpmenow_session2user');
        $field = new xmldb_field('last_message');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '20', XMLDB_UNSIGNED, null, null, null, 'last_refresh');
        /// Launch add field last_message
        $result = $result && $dbman->add_field($table, $field);
    }
    if ($result && $oldversion < 2012091200) {
        /// Define field last_message to be added to block_helpmenow_session
        $table = new xmldb_table('block_helpmenow_session');
        $field = new xmldb_field('last_message');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '20', XMLDB_UNSIGNED, null, null, null, 'timecreated');
        /// Launch add field last_message
        $result = $result && $dbman->add_field($table, $field);
    }
    if ($result && $oldversion < 2012091400) {
        /// Changing the default of field last_message on table block_helpmenow_session2user to 0
        $table = new xmldb_table('block_helpmenow_session2user');
        $field = new xmldb_field('last_message');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '20', XMLDB_UNSIGNED, null, null, '0', 'last_refresh');
        /// Launch change of default for field last_message
        $result = $result && $dbman->change_field_default($table, $field);
        /// Changing the default of field last_message on table block_helpmenow_session to 0
        $table = new xmldb_table('block_helpmenow_session');
        $field = new xmldb_field('last_message');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '20', XMLDB_UNSIGNED, null, null, '0', 'timecreated');
        /// Launch change of default for field last_message
        $result = $result && $dbman->change_field_default($table, $field);
    }
    if ($result && $oldversion < 2012092100) {
        /// Define field lastaccess to be added to block_helpmenow_user
        $table = new xmldb_table('block_helpmenow_user');
        $field = new xmldb_field('lastaccess');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '20', XMLDB_UNSIGNED, null, null, null, 'motd');
        /// Launch add field lastaccess
        $result = $result && $dbman->add_field($table, $field);
    }
    if ($result && $oldversion < 2012121900) {
        /// Define field optimistic_last_message to be added to block_helpmenow_session2user
        $table = new xmldb_table('block_helpmenow_session2user');
        $field = new xmldb_field('optimistic_last_message');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '20', XMLDB_UNSIGNED, null, null, null, 'last_message');
        /// Launch add field optimistic_last_message
        $result = $result && $dbman->add_field($table, $field);
        /// Define field cache to be added to block_helpmenow_session2user
        $table = new xmldb_table('block_helpmenow_session2user');
        $field = new xmldb_field('cache');
        $field->set_attributes(XMLDB_TYPE_TEXT, 'big', null, null, null, null, 'optimistic_last_message');
        /// Launch add field cache
        $result = $result && $dbman->add_field($table, $field);
    }
    if ($result && $oldversion < 2012122700) {
        /// Define table block_helpmenow_error_log to be created
        $table = new xmldb_table('block_helpmenow_error_log');
        /// Adding fields to table block_helpmenow_error_log
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('error', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('details', XMLDB_TYPE_TEXT, 'big', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '20', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        /// Adding keys to table block_helpmenow_error_log
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Launch create table for block_helpmenow_error_log
        $result = $result && $dbman->create_table($table);
    }
    if ($result && $oldversion < 2012123100) {
        /// Define field userid to be added to block_helpmenow_error_log
        $table = new xmldb_table('block_helpmenow_error_log');
        $field = new xmldb_field('userid');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '20', XMLDB_UNSIGNED, null, null, null, 'timecreated');
        /// Launch add field userid
        $result = $result && $dbman->add_field($table, $field);
    }
    if ($result && $oldversion < 2013011800) {
        /// Define table block_helpmenow_contact to be created
        $table = new xmldb_table('block_helpmenow_contact');
        /// Adding fields to table block_helpmenow_contact
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '20', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('contact_userid', XMLDB_TYPE_INTEGER, '20', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '20', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        /// Adding keys to table block_helpmenow_contact
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Adding indexes to table block_helpmenow_contact
        $table->add_index('block_helpmenow_contact_userid_ix', XMLDB_INDEX_NOTUNIQUE, array('userid'));
        /// Launch create table for block_helpmenow_contact
        $result = $result && $dbman->create_table($table);
    }
    if ($result && $oldversion < 2013050200) {
        /// Define index block_helpmenow_log_u_ix (not unique) to be added to block_helpmenow_log
        $table = new xmldb_table('block_helpmenow_log');
        $index = new xmldb_index('block_helpmenow_log_u_ix');
        $index->set_attributes(XMLDB_INDEX_NOTUNIQUE, array('userid'));
        /// Launch add index block_helpmenow_log_u_ix
        $result = $result && $dbman->add_index($table, $index);
        /// Define index block_helpmenow_log_ua_ix (not unique) to be added to block_helpmenow_log
        $table = new xmldb_table('block_helpmenow_log');
        $index = new xmldb_index('block_helpmenow_log_ua_ix');
        $index->set_attributes(XMLDB_INDEX_NOTUNIQUE, array('userid', 'action'));
        /// Launch add index block_helpmenow_log_ua_ix
        $result = $result && $dbman->add_index($table, $index);
    }
    if ($result && $oldversion < 2013050700) {
        /// Define field last_read to be added to block_helpmenow_session2user
        $table = new xmldb_table('block_helpmenow_session2user');
        $field = new xmldb_field('last_read');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '20', XMLDB_UNSIGNED, null, null, '0', 'cache');
        /// Launch add field last_read
        $result = $result && $dbman->add_field($table, $field);
    }
    if ($result && $oldversion < 2014050401) {
        // Reminder: do not use core/lib function in upgrade script!
        $contextid = $DB->get_field('context', 'id', array('contextlevel' => CONTEXT_SYSTEM));
        // Hardcode the capability as they must match the value at this upgrade time.
        $HELPMENOW_CAP_QUEUE_ANSWER = 'block/helpmenow:global_queue_answer';
        $HELPMENOW_CAP_QUEUE_ASK = 'block/helpmenow:queue_ask';
        $HELPMENOW_CAP_MANAGE = 'block/helpmenow:manage_queues';
        // Add Help Me Now block manager system role.
        $role = new stdClass();
        $role->name = 'Help Me Now Manager';
        $role->shortname = 'helpmenowmanager';
        $role->description = 'can assign a queue helper - can do anything on helpmenow.';
        // Find free sortorder number.
        $role->sortorder = $DB->get_field('role', 'MAX(sortorder) + 1', array());
        if (empty($role->sortorder)) {
            $role->sortorder = 1;
        }
        $roleid = $DB->insert_record('role', $role);
        // Set the role as system role.
        $rcl = new stdClass();
        $rcl->roleid = $roleid;
        $rcl->contextlevel = CONTEXT_SYSTEM;
        $DB->insert_record('role_context_levels', $rcl, false, true);
        // Assign correct permission to Help Me Now block manager role.
        $cap = new stdClass();
        $cap->contextid = $contextid;
        $cap->roleid = $roleid;
        $cap->capability = $HELPMENOW_CAP_MANAGE;
        $cap->permission = 1;
        $cap->timemodified = time();
        $cap->modifierid = empty($USER->id) ? 0 : $USER->id;
        $DB->insert_record('role_capabilities', $cap);
        $cap->capability = $HELPMENOW_CAP_QUEUE_ANSWER;
        $DB->insert_record('role_capabilities', $cap);
        $cap->capability = $HELPMENOW_CAP_QUEUE_ASK;
        $DB->insert_record('role_capabilities', $cap);
        // Add Help Me Now block instructor system role.
        $role = new stdClass();
        $role->name = 'Help Me Now instructor';
        $role->shortname = 'helpmenowinstructor';
        $role->description = 'can login in an office and answer questions.';
        $role->sortorder = $DB->get_field('role', 'MAX(sortorder) + 1', array());
        $roleid = $DB->insert_record('role', $role);
        $rcl = new stdClass();
        $rcl->roleid = $roleid;
        $rcl->contextlevel = CONTEXT_SYSTEM;
        $DB->insert_record('role_context_levels', $rcl, false, true);
        $cap->roleid = $roleid;
        $cap->capability = $HELPMENOW_CAP_QUEUE_ASK;
        $DB->insert_record('role_capabilities', $cap);
        $cap->capability = $HELPMENOW_CAP_QUEUE_ANSWER;
        $DB->insert_record('role_capabilities', $cap);
        // Add Help Me Now block student system role.
        $role = new stdClass();
        $role->name = 'Help Me Now student';
        $role->shortname = 'helpmenowstudent';
        $role->description = 'can ask questions to instructors and helpers.';
        $role->sortorder = $DB->get_field('role', 'MAX(sortorder) + 1', array());
        $roleid = $DB->insert_record('role', $role);
        $rcl = new stdClass();
        $rcl->roleid = $roleid;
        $rcl->contextlevel = CONTEXT_SYSTEM;
        $DB->insert_record('role_context_levels', $rcl, false, true);
        $cap->roleid = $roleid;
        $cap->capability = $HELPMENOW_CAP_QUEUE_ASK;
        $DB->insert_record('role_capabilities', $cap);
        // Helpmenow savepoint reached.
        upgrade_block_savepoint(true, 2014050401, 'helpmenow');
    }
    return $result;
}
Example #19
0
 /**
  * Function to emulate full ALTER TABLE which SQLite does not support.
  * The function can be used to drop a column ($xmldb_delete_field != null and
  * $xmldb_add_field == null), add a column ($xmldb_delete_field == null and
  * $xmldb_add_field != null), change/rename a column ($xmldb_delete_field == null
  * and $xmldb_add_field == null).
  * @param xmldb_table $xmldb_table table to change
  * @param xmldb_field $xmldb_add_field column to create/modify (full specification is required)
  * @param xmldb_field $xmldb_delete_field column to delete/modify (only name field is required)
  * @return array of strings (SQL statements to alter the table structure)
  */
 protected function getAlterTableSchema($xmldb_table, $xmldb_add_field = NULL, $xmldb_delete_field = NULL)
 {
     /// Get the quoted name of the table and field
     $tablename = $this->getTableName($xmldb_table);
     $oldname = $xmldb_delete_field ? $xmldb_delete_field->getName() : NULL;
     $newname = $xmldb_add_field ? $xmldb_add_field->getName() : NULL;
     if ($xmldb_delete_field) {
         $xmldb_table->deleteField($oldname);
     }
     if ($xmldb_add_field) {
         $xmldb_table->addField($xmldb_add_field);
     }
     if ($oldname) {
         // alter indexes
         $indexes = $xmldb_table->getIndexes();
         foreach ($indexes as $index) {
             $fields = $index->getFields();
             $i = array_search($oldname, $fields);
             if ($i !== FALSE) {
                 if ($newname) {
                     $fields[$i] = $newname;
                 } else {
                     unset($fields[$i]);
                 }
                 $xmldb_table->deleteIndex($index->getName());
                 if (count($fields)) {
                     $index->setFields($fields);
                     $xmldb_table->addIndex($index);
                 }
             }
         }
         // alter keys
         $keys = $xmldb_table->getKeys();
         foreach ($keys as $key) {
             $fields = $key->getFields();
             $reffields = $key->getRefFields();
             $i = array_search($oldname, $fields);
             if ($i !== FALSE) {
                 if ($newname) {
                     $fields[$i] = $newname;
                 } else {
                     unset($fields[$i]);
                     unset($reffields[$i]);
                 }
                 $xmldb_table->deleteKey($key->getName());
                 if (count($fields)) {
                     $key->setFields($fields);
                     $key->setRefFields($fields);
                     $xmldb_table->addkey($key);
                 }
             }
         }
     }
     // prepare data copy
     $fields = $xmldb_table->getFields();
     foreach ($fields as $key => $field) {
         $fieldname = $field->getName();
         if ($fieldname == $newname && $oldname && $oldname != $newname) {
             // field rename operation
             $fields[$key] = $this->getEncQuoted($oldname) . ' AS ' . $this->getEncQuoted($newname);
         } else {
             $fields[$key] = $this->getEncQuoted($field->getName());
         }
     }
     $fields = implode(',', $fields);
     $results[] = 'BEGIN TRANSACTION';
     $results[] = 'CREATE TEMPORARY TABLE temp_data AS SELECT * FROM ' . $tablename;
     $results[] = 'DROP TABLE ' . $tablename;
     $results = array_merge($results, $this->getCreateTableSQL($xmldb_table));
     $results[] = 'INSERT INTO ' . $tablename . ' SELECT ' . $fields . ' FROM temp_data';
     $results[] = 'DROP TABLE temp_data';
     $results[] = 'COMMIT';
     return $results;
 }
<pre>
<?php 
require_once '../configpath.php';
require_once $CFG->dirroot . '/lib/xmldb/xmldb_object.php';
require_once $CFG->dirroot . '/lib/xmldb/xmldb_table.php';
$dbman = $DB->get_manager();
$problematic_table_list = array("block_ilp_plu_hte_ent" => 'value', "block_ilp_plu_are_ent" => 'value');
foreach ($problematic_table_list as $table => $field) {
    $table = new xmldb_table($table);
    $field = new xmldb_field($field);
    $field->setType(XMLDB_TYPE_TEXT);
    $dbman->change_field_type($table, $field);
    echo "{$table}.{$field} type is now 'text'\n";
}
/*
$table = new xmldb_table( 'block_ilp_plu_gradebooktracker_ent' );

$dropfield = new xmldb_field( 'review' );

if($dbman->field_exists( $table, $dropfield ) ){
    echo "Found 'review': dropping 'review' from block_ilp_plu_gradebooktracker_ent\n";
    $dbman->drop_field( $table, $dropfield );
}
else{
    echo "Didn't find 'review' in block_ilp_plu_gradebooktracker_ent\n";
}

$addfield = new xmldb_field( 'entry_id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED ) ;
if( !$dbman->field_exists( $table, $addfield ) ){
    echo "adding 'entry_id' to block_ilp_plu_gradebooktracker_ent\n";
    $dbman->add_field( $table, $addfield );
Example #21
0
 public function testRenameField()
 {
     $DB = $this->tdb;
     // do not use global $DB!
     $dbman = $this->tdb->get_manager();
     $table = $this->create_deftable('test_table0');
     $field = new xmldb_field('type');
     $field->set_attributes(XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, 'general', 'course');
     $dbman->rename_field($table, $field, 'newfieldname');
     $columns = $DB->get_columns('test_table0');
     $this->assertFalse(array_key_exists('type', $columns));
     $this->assertTrue(array_key_exists('newfieldname', $columns));
 }
Example #22
0
function xmldb_scorm_upgrade($oldversion)
{
    global $CFG, $DB;
    $dbman = $DB->get_manager();
    $result = true;
    //===== 1.9.0 upgrade line ======//
    // Adding missing 'whatgrade' field to table scorm
    if ($result && $oldversion < 2008073000) {
        $table = new xmldb_table('scorm');
        $field = new xmldb_field('whatgrade');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'grademethod');
        /// Launch add field whatgrade
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        upgrade_mod_savepoint($result, 2008073000, 'scorm');
    }
    if ($result && $oldversion < 2008082500) {
        /// Define field scormtype to be added to scorm
        $table = new xmldb_table('scorm');
        $field = new xmldb_field('scormtype', XMLDB_TYPE_CHAR, '50', null, XMLDB_NOTNULL, null, 'local', 'name');
        /// Launch add field scormtype
        $dbman->add_field($table, $field);
        /// scorm savepoint reached
        upgrade_mod_savepoint($result, 2008082500, 'scorm');
    }
    if ($result && $oldversion < 2008090300) {
        /// Define field sha1hash to be added to scorm
        $table = new xmldb_table('scorm');
        $field = new xmldb_field('sha1hash', XMLDB_TYPE_CHAR, '40', null, null, null, null, 'updatefreq');
        /// Launch add field sha1hash
        $dbman->add_field($table, $field);
        /// scorm savepoint reached
        upgrade_mod_savepoint($result, 2008090300, 'scorm');
    }
    if ($result && $oldversion < 2008090301) {
        /// Define field revision to be added to scorm
        $table = new xmldb_table('scorm');
        $field = new xmldb_field('revision', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'md5hash');
        /// Launch add field revision
        $dbman->add_field($table, $field);
        /// scorm savepoint reached
        upgrade_mod_savepoint($result, 2008090301, 'scorm');
    }
    if ($result && $oldversion < 2008090302) {
        $sql = "UPDATE {scorm}\n                   SET scormtype = 'external'\n                 WHERE reference LIKE ? OR reference LIKE ? OR reference LIKE ?";
        $DB->execute($sql, array('http://%imsmanifest.xml', 'https://%imsmanifest.xml', 'www.%imsmanifest.xml'));
        $sql = "UPDATE {scorm}\n                   SET scormtype = 'localsync'\n                 WHERE reference LIKE ? OR reference LIKE ? OR reference LIKE ?\n                       OR reference LIKE ? OR reference LIKE ? OR reference LIKE ?";
        $DB->execute($sql, array('http://%.zip', 'https://%.zip', 'www.%.zip', 'http://%.pif', 'https://%.pif', 'www.%.pif'));
        $sql = "UPDATE {scorm} SET scormtype = 'imsrepository' WHERE reference LIKE ?";
        $DB->execute($sql, array('#%'));
        /// scorm savepoint reached
        upgrade_mod_savepoint($result, 2008090302, 'scorm');
    }
    if ($result && $oldversion < 2008090303) {
        //remove obsoleted config settings
        unset_config('scorm_advancedsettings');
        unset_config('scorm_windowsettings');
        /// scorm savepoint reached
        upgrade_mod_savepoint($result, 2008090303, 'scorm');
    }
    if ($result && $oldversion < 2008090304) {
        /////////////////////////////////////
        /// new file storage upgrade code ///
        /////////////////////////////////////
        function scorm_migrate_content_files($context, $base, $path)
        {
            global $CFG, $OUTPUT;
            $fullpathname = $base . $path;
            $fs = get_file_storage();
            $filearea = 'scorm_content';
            $items = new DirectoryIterator($fullpathname);
            foreach ($items as $item) {
                if ($item->isDot()) {
                    unset($item);
                    // release file handle
                    continue;
                }
                if ($item->isLink()) {
                    // do not follow symlinks - they were never supported in moddata, sorry
                    unset($item);
                    // release file handle
                    continue;
                }
                if ($item->isFile()) {
                    if (!$item->isReadable()) {
                        echo $OUTPUT->notification(" File not readable, skipping: " . $fullpathname . $item->getFilename());
                        unset($item);
                        // release file handle
                        continue;
                    }
                    $filepath = clean_param($path, PARAM_PATH);
                    $filename = clean_param($item->getFilename(), PARAM_FILE);
                    $oldpathname = $fullpathname . $item->getFilename();
                    if ($filename === '') {
                        continue;
                        unset($item);
                        // release file handle
                    }
                    if (!$fs->file_exists($context->id, $filearea, '0', $filepath, $filename)) {
                        $file_record = array('contextid' => $context->id, 'filearea' => $filearea, 'itemid' => 0, 'filepath' => $filepath, 'filename' => $filename, 'timecreated' => $item->getCTime(), 'timemodified' => $item->getMTime());
                        unset($item);
                        // release file handle
                        if ($fs->create_file_from_pathname($file_record, $oldpathname)) {
                            @unlink($oldpathname);
                        }
                    } else {
                        unset($item);
                        // release file handle
                    }
                } else {
                    //migrate recursively all subdirectories
                    $oldpathname = $fullpathname . $item->getFilename() . '/';
                    $subpath = $path . $item->getFilename() . '/';
                    unset($item);
                    // release file handle
                    scorm_migrate_content_files($context, $base, $subpath);
                    @rmdir($oldpathname);
                    // deletes dir if empty
                }
            }
            unset($items);
            //release file handles
        }
        $fs = get_file_storage();
        $sqlfrom = "FROM {scorm} s\n                    JOIN {modules} m ON m.name = 'scorm'\n                    JOIN {course_modules} cm ON (cm.module = m.id AND cm.instance = s.id)";
        $count = $DB->count_records_sql("SELECT COUNT('x') {$sqlfrom}");
        if ($rs = $DB->get_recordset_sql("SELECT s.id, s.scormtype, s.reference, s.course, cm.id AS cmid {$sqlfrom} ORDER BY s.course, s.id")) {
            $pbar = new progress_bar('migratescormfiles', 500, true);
            $i = 0;
            foreach ($rs as $scorm) {
                $i++;
                upgrade_set_timeout(180);
                // set up timeout, may also abort execution
                $pbar->update($i, $count, "Migrating scorm files - {$i}/{$count}.");
                $context = get_context_instance(CONTEXT_MODULE, $scorm->cmid);
                $coursecontext = get_context_instance(CONTEXT_COURSE, $scorm->course);
                // first copy local packages if found - do not delete in case they are shared ;-)
                if ($scorm->scormtype === 'local' and preg_match('/.*(\\.zip|\\.pif)$/i', $scorm->reference)) {
                    $packagefile = '/' . clean_param($scorm->reference, PARAM_PATH);
                    $pathnamehash = sha1($coursecontext->id . 'course_content0' . $packagefile);
                    if ($file = $fs->get_file_by_hash($pathnamehash)) {
                        $file_record = array('scontextid' => $context->id, 'filearea' => 'scorm_pacakge', 'itemid' => 0, 'filepath' => '/');
                        $packagefile = $fs->create_file_from_storedfile($file_record, $file);
                        $scorm->reference = $packagefile->get_filename();
                    } else {
                        $scorm->reference = '';
                    }
                    $DB->update_record('scorm', $scorm);
                }
                // now migrate the extracted package
                $basepath = "{$CFG->dataroot}/{$scorm->course}/{$CFG->moddata}/scorm/{$scorm->id}";
                if (!is_dir($basepath)) {
                    //no files?
                    continue;
                }
                scorm_migrate_content_files($context, $basepath, '/');
                // remove dirs if empty
                @rmdir("{$CFG->dataroot}/{$scorm->course}/{$CFG->moddata}/scorm/{$scorm->id}/");
                @rmdir("{$CFG->dataroot}/{$scorm->course}/{$CFG->moddata}/scorm/");
                @rmdir("{$CFG->dataroot}/{$scorm->course}/{$CFG->moddata}/");
            }
            $rs->close();
        }
        /// scorm savepoint reached
        upgrade_mod_savepoint($result, 2008090304, 'scorm');
    }
    if ($result && $oldversion < 2008090305) {
        /// Define new fields forcecompleted, forcenewattempt, displayattemptstatus, and displaycoursestructure to be added to scorm
        $table = new xmldb_table('scorm');
        $field = new xmldb_field('forcecompleted', XMLDB_TYPE_INTEGER, '1', null, null, null, '0', 'maxattempt');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('forcenewattempt', XMLDB_TYPE_INTEGER, '1', null, null, null, '0', 'forcecompleted');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('lastattemptlock', XMLDB_TYPE_INTEGER, '1', null, null, null, '0', 'forcenewattempt');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('displayattemptstatus', XMLDB_TYPE_INTEGER, '1', null, null, null, '1', 'lastattemptlock');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('displaycoursestructure', XMLDB_TYPE_INTEGER, '1', null, null, null, '1', 'displayattemptstatus');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// scorm savepoint reached
        upgrade_mod_savepoint($result, 2008090305, 'scorm');
    }
    // remove redundant config values
    if ($result && $oldversion < 2008090306) {
        /*
        * comment this out as it is handled by the update mark 2008090310 below
        * left for historical documentation as some early adopters may have done
        * this already.
        $redundant_config = array(
                        'scorm_allowapidebug',
                        'scorm_allowtypeexternal',
                        'scorm_allowtypeimsrepository',
                        'scorm_allowtypelocalsync',
                        'scorm_apidebugmask',
                        'scorm_frameheight',
                        'scorm_framewidth',
                        'scorm_maxattempts',
                        'scorm_updatetime');
                foreach ($redundant_config as $rcfg) {
           if (isset($CFG->$rcfg)) {
               unset_config($rcfg);
           }
                }
        */
        /// scorm savepoint reached
        upgrade_mod_savepoint($result, 2008090306, 'scorm');
    }
    // remove redundant config values
    if ($result && $oldversion < 2008090307) {
        /*
        * comment this out as it is handled by the update mark 2008090310 below
        * left for historical documentation as some early adopters may have done
        * this already.
        $redundant_config = array(
                        'scorm_allowapidebug',
                        'scorm_allowtypeexternal',
                        'scorm_allowtypeimsrepository',
                        'scorm_allowtypelocalsync',
                        'scorm_apidebugmask',
                        'scorm_frameheight',
                        'scorm_framewidth',
                        'scorm_maxattempts',
                        'scorm_updatetime',
                        'scorm_resizable',
                        'scorm_scrollbars',
                        'scorm_directories',
                        'scorm_location',
                        'scorm_menubar',
                        'scorm_toolbar',
                        'scorm_status',
                        'scorm_grademethod',
                        'scorm_maxgrade',
                        'scorm_whatgrade',
                        'scorm_popup',
                        'scorm_skipview',
                        'scorm_hidebrowse',
                        'scorm_hidetoc',
                        'scorm_hidenav',
                        'scorm_auto',
                        'scorm_updatefreq'
        );
                foreach ($redundant_config as $rcfg) {
           if (isset($CFG->$rcfg)) {
               unset_config($rcfg);
           }
                }
        */
        /// scorm savepoint reached
        upgrade_mod_savepoint($result, 2008090307, 'scorm');
    }
    if ($result && $oldversion < 2008090308) {
        $table = new xmldb_table('scorm');
        $field = new xmldb_field('timeopen', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'height');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('timeclose', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'timeopen');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// scorm savepoint reached
        upgrade_mod_savepoint($result, 2008090308, 'scorm');
    }
    if ($result && $oldversion < 2008090310) {
        // take above blocks that delete config and move the values in to config_plugins
        $redundant_config = array('scorm_allowapidebug', 'scorm_allowtypeexternal', 'scorm_allowtypeimsrepository', 'scorm_allowtypelocalsync', 'scorm_apidebugmask', 'scorm_frameheight', 'scorm_framewidth', 'scorm_maxattempts', 'scorm_updatetime', 'scorm_resizable', 'scorm_scrollbars', 'scorm_directories', 'scorm_location', 'scorm_menubar', 'scorm_toolbar', 'scorm_status', 'scorm_grademethod', 'scorm_maxgrade', 'scorm_whatgrade', 'scorm_popup', 'scorm_skipview', 'scorm_hidebrowse', 'scorm_hidetoc', 'scorm_hidenav', 'scorm_auto', 'scorm_updatefreq', 'scorm_displayattemptstatus', 'scorm_displaycoursestructure', 'scorm_forcecompleted', 'scorm_forcenewattempt', 'scorm_lastattemptlock');
        foreach ($redundant_config as $rcfg) {
            if (isset($CFG->{$rcfg})) {
                $shortname = substr($rcfg, 6);
                $result = $result && set_config($shortname, $CFG->{$rcfg}, 'scorm');
                $result = $result && unset_config($rcfg);
            }
        }
        /// scorm savepoint reached
        upgrade_mod_savepoint($result, 2008090310, 'scorm');
    }
    if ($result && $oldversion < 2009042000) {
        /// Rename field summary on table scorm to intro
        $table = new xmldb_table('scorm');
        $field = new xmldb_field('summary', XMLDB_TYPE_TEXT, 'small', null, XMLDB_NOTNULL, null, null, 'reference');
        /// Launch rename field summary
        $dbman->rename_field($table, $field, 'intro');
        /// scorm savepoint reached
        upgrade_mod_savepoint($result, 2009042000, 'scorm');
    }
    if ($result && $oldversion < 2009042001) {
        /// Define field introformat to be added to scorm
        $table = new xmldb_table('scorm');
        $field = new xmldb_field('introformat', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'intro');
        /// Launch add field introformat
        $dbman->add_field($table, $field);
        /// scorm savepoint reached
        upgrade_mod_savepoint($result, 2009042001, 'scorm');
    }
    return $result;
}
Example #23
0
/**
 * This file keeps track of upgrades to
 * the forum module
 *
 * Sometimes, changes between versions involve
 * alterations to database structures and other
 * major things that may break installations.
 *
 * The upgrade function in this file will attempt
 * to perform all the necessary actions to upgrade
 * your older installation to the current version.
 *
 * If there's something it cannot do itself, it
 * will tell you what you need to do.
 *
 * The commands in here will all be database-neutral,
 * using the methods of database_manager class
 *
 * Please do not forget to use upgrade_set_timeout()
 * before any action that may take longer time to finish.
 *
 * @package mod-forum
 * @copyright 2003 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
function xmldb_forum_upgrade($oldversion)
{
    global $CFG, $DB, $OUTPUT;
    $dbman = $DB->get_manager();
    // loads ddl manager and xmldb classes
    //===== 1.9.0 upgrade line ======//
    if ($oldversion < 2007101511) {
        //MDL-13866 - send forum ratins to gradebook again
        require_once $CFG->dirroot . '/mod/forum/lib.php';
        forum_upgrade_grades();
        upgrade_mod_savepoint(true, 2007101511, 'forum');
    }
    if ($oldversion < 2008072800) {
        /// Define field completiondiscussions to be added to forum
        $table = new xmldb_table('forum');
        $field = new xmldb_field('completiondiscussions');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '9', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'blockperiod');
        /// Launch add field completiondiscussions
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('completionreplies');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '9', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'completiondiscussions');
        /// Launch add field completionreplies
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// Define field completionposts to be added to forum
        $field = new xmldb_field('completionposts');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '9', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'completionreplies');
        /// Launch add field completionposts
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        upgrade_mod_savepoint(true, 2008072800, 'forum');
    }
    if ($oldversion < 2008081900) {
        /////////////////////////////////////
        /// new file storage upgrade code ///
        /////////////////////////////////////
        $fs = get_file_storage();
        $empty = $DB->sql_empty();
        // silly oracle empty string handling workaround
        $sqlfrom = "FROM {forum_posts} p\n                    JOIN {forum_discussions} d ON d.id = p.discussion\n                    JOIN {forum} f ON f.id = d.forum\n                    JOIN {modules} m ON m.name = 'forum'\n                    JOIN {course_modules} cm ON (cm.module = m.id AND cm.instance = f.id)\n                   WHERE p.attachment <> '{$empty}' AND p.attachment <> '1'";
        $count = $DB->count_records_sql("SELECT COUNT('x') {$sqlfrom}");
        $rs = $DB->get_recordset_sql("SELECT p.id, p.attachment, p.userid, d.forum, f.course, cm.id AS cmid {$sqlfrom} ORDER BY f.course, f.id, d.id");
        if ($rs->valid()) {
            $pbar = new progress_bar('migrateforumfiles', 500, true);
            $i = 0;
            foreach ($rs as $post) {
                $i++;
                upgrade_set_timeout(60);
                // set up timeout, may also abort execution
                $pbar->update($i, $count, "Migrating forum posts - {$i}/{$count}.");
                $filepath = "{$CFG->dataroot}/{$post->course}/{$CFG->moddata}/forum/{$post->forum}/{$post->id}/{$post->attachment}";
                if (!is_readable($filepath)) {
                    //file missing??
                    echo $OUTPUT->notification("File not readable, skipping: " . $filepath);
                    $post->attachment = '';
                    $DB->update_record('forum_posts', $post);
                    continue;
                }
                $context = get_context_instance(CONTEXT_MODULE, $post->cmid);
                $filearea = 'attachment';
                $filename = clean_param($post->attachment, PARAM_FILE);
                if ($filename === '') {
                    echo $OUTPUT->notification("Unsupported post filename, skipping: " . $filepath);
                    $post->attachment = '';
                    $DB->update_record('forum_posts', $post);
                    continue;
                }
                if (!$fs->file_exists($context->id, 'mod_forum', $filearea, $post->id, '/', $filename)) {
                    $file_record = array('contextid' => $context->id, 'component' => 'mod_forum', 'filearea' => $filearea, 'itemid' => $post->id, 'filepath' => '/', 'filename' => $filename, 'userid' => $post->userid);
                    if ($fs->create_file_from_pathname($file_record, $filepath)) {
                        $post->attachment = '1';
                        $DB->update_record('forum_posts', $post);
                        unlink($filepath);
                    }
                }
                // remove dirs if empty
                @rmdir("{$CFG->dataroot}/{$post->course}/{$CFG->moddata}/forum/{$post->forum}/{$post->id}");
                @rmdir("{$CFG->dataroot}/{$post->course}/{$CFG->moddata}/forum/{$post->forum}");
                @rmdir("{$CFG->dataroot}/{$post->course}/{$CFG->moddata}/forum");
            }
        }
        $rs->close();
        upgrade_mod_savepoint(true, 2008081900, 'forum');
    }
    if ($oldversion < 2008090800) {
        /// Define field maxattachments to be added to forum
        $table = new xmldb_table('forum');
        $field = new xmldb_field('maxattachments', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '1', 'maxbytes');
        /// Conditionally launch add field maxattachments
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        /// forum savepoint reached
        upgrade_mod_savepoint(true, 2008090800, 'forum');
    }
    if ($oldversion < 2009042000) {
        /// Rename field format on table forum_posts to messageformat
        $table = new xmldb_table('forum_posts');
        $field = new xmldb_field('format', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0', 'message');
        /// Launch rename field format
        $dbman->rename_field($table, $field, 'messageformat');
        /// forum savepoint reached
        upgrade_mod_savepoint(true, 2009042000, 'forum');
    }
    if ($oldversion < 2009042001) {
        /// Define field messagetrust to be added to forum_posts
        $table = new xmldb_table('forum_posts');
        $field = new xmldb_field('messagetrust', XMLDB_TYPE_INTEGER, '2', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'messageformat');
        /// Launch add field messagetrust
        $dbman->add_field($table, $field);
        /// forum savepoint reached
        upgrade_mod_savepoint(true, 2009042001, 'forum');
    }
    if ($oldversion < 2009042002) {
        $trustmark = '#####TRUSTTEXT#####';
        $rs = $DB->get_recordset_sql("SELECT * FROM {forum_posts} WHERE message LIKE ?", array($trustmark . '%'));
        foreach ($rs as $post) {
            if (strpos($post->message, $trustmark) !== 0) {
                // probably lowercase in some DBs?
                continue;
            }
            $post->message = str_replace($trustmark, '', $post->message);
            $post->messagetrust = 1;
            $DB->update_record('forum_posts', $post);
        }
        $rs->close();
        /// forum savepoint reached
        upgrade_mod_savepoint(true, 2009042002, 'forum');
    }
    if ($oldversion < 2009042003) {
        /// Define field introformat to be added to forum
        $table = new xmldb_table('forum');
        $field = new xmldb_field('introformat', XMLDB_TYPE_INTEGER, '4', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'intro');
        /// Launch add field introformat
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // conditionally migrate to html format in intro
        if ($CFG->texteditors !== 'textarea') {
            $rs = $DB->get_recordset('forum', array('introformat' => FORMAT_MOODLE), '', 'id,intro,introformat');
            foreach ($rs as $f) {
                $f->intro = text_to_html($f->intro, false, false, true);
                $f->introformat = FORMAT_HTML;
                $DB->update_record('forum', $f);
                upgrade_set_timeout();
            }
            $rs->close();
        }
        /// forum savepoint reached
        upgrade_mod_savepoint(true, 2009042003, 'forum');
    }
    /// Dropping all enums/check contraints from core. MDL-18577
    if ($oldversion < 2009042700) {
        /// Changing list of values (enum) of field type on table forum to none
        $table = new xmldb_table('forum');
        $field = new xmldb_field('type', XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, 'general', 'course');
        /// Launch change of list of values for field type
        $dbman->drop_enum_from_field($table, $field);
        /// forum savepoint reached
        upgrade_mod_savepoint(true, 2009042700, 'forum');
    }
    if ($oldversion < 2009050400) {
        /// Clean existing wrong rates. MDL-18227
        $DB->delete_records('forum_ratings', array('post' => 0));
        /// forum savepoint reached
        upgrade_mod_savepoint(true, 2009050400, 'forum');
    }
    if ($oldversion < 2010042800) {
        //migrate forumratings to the central rating table
        $table = new xmldb_table('forum_ratings');
        if ($dbman->table_exists($table)) {
            //forum ratings only have a single time column so use it for both time created and modified
            $sql = "INSERT INTO {rating} (contextid, scaleid, itemid, rating, userid, timecreated, timemodified)\n\n                    SELECT cxt.id, f.scale, r.post AS itemid, r.rating, r.userid, r.time AS timecreated, r.time AS timemodified\n                      FROM {forum_ratings} r\n                      JOIN {forum_posts} p ON p.id=r.post\n                      JOIN {forum_discussions} d ON d.id=p.discussion\n                      JOIN {forum} f ON f.id=d.forum\n                      JOIN {course_modules} cm ON cm.instance=f.id\n                      JOIN {context} cxt ON cxt.instanceid=cm.id\n                      JOIN {modules} m ON m.id=cm.module\n                     WHERE m.name = :modname AND cxt.contextlevel = :contextlevel";
            $params['modname'] = 'forum';
            $params['contextlevel'] = CONTEXT_MODULE;
            $DB->execute($sql, $params);
            //now drop forum_ratings
            $dbman->drop_table($table);
        }
        upgrade_mod_savepoint(true, 2010042800, 'forum');
    }
    if ($oldversion < 2010070800) {
        // Remove the forum digests message provider MDL-23145
        $DB->delete_records('message_providers', array('name' => 'digests', 'component' => 'mod_forum'));
        // forum savepoint reached
        upgrade_mod_savepoint(true, 2010070800, 'forum');
    }
    if ($oldversion < 2010091900) {
        // rename files from borked upgrade in 2.0dev
        $fs = get_file_storage();
        $rs = $DB->get_recordset('files', array('component' => 'mod_form'));
        foreach ($rs as $oldrecord) {
            $file = $fs->get_file_instance($oldrecord);
            $newrecord = array('component' => 'mod_forum');
            if (!$fs->file_exists($oldrecord->contextid, 'mod_forum', $oldrecord->filearea, $oldrecord->itemid, $oldrecord->filepath, $oldrecord->filename)) {
                $fs->create_file_from_storedfile($newrecord, $file);
            }
            $file->delete();
        }
        $rs->close();
        upgrade_mod_savepoint(true, 2010091900, 'forum');
    }
    return true;
}
 /**
  * Invoke method, every class will have its own
  * returns true/false on completion, setting both
  * errormsg and output as necessary
  */
 function invoke()
 {
     parent::invoke();
     $result = true;
     /// Set own core attributes
     $this->does_generate = ACTION_NONE;
     //$this->does_generate = ACTION_GENERATE_HTML;
     /// These are always here
     global $CFG, $XMLDB;
     /// Do the job, setting result as needed
     if (!data_submitted()) {
         ///Basic prevention
         print_error('wrongcall', 'error');
     }
     /// Get parameters
     $dirpath = required_param('dir', PARAM_PATH);
     $dirpath = $CFG->dirroot . $dirpath;
     $tableparam = strtolower(required_param('table', PARAM_PATH));
     $fieldparam = strtolower(required_param('field', PARAM_PATH));
     $name = substr(trim(strtolower(optional_param('name', $fieldparam, PARAM_PATH))), 0, 30);
     $comment = required_param('comment', PARAM_CLEAN);
     $comment = trim($comment);
     $type = required_param('type', PARAM_INT);
     $length = strtolower(optional_param('length', NULL, PARAM_ALPHANUM));
     $decimals = optional_param('decimals', NULL, PARAM_INT);
     $unsigned = optional_param('unsigned', false, PARAM_BOOL);
     $notnull = optional_param('notnull', false, PARAM_BOOL);
     $sequence = optional_param('sequence', false, PARAM_BOOL);
     $default = optional_param('default', NULL, PARAM_PATH);
     $default = trim($default);
     $editeddir =& $XMLDB->editeddirs[$dirpath];
     $structure =& $editeddir->xml_file->getStructure();
     $table =& $structure->getTable($tableparam);
     $field =& $table->getField($fieldparam);
     $oldhash = $field->getHash();
     $errors = array();
     /// To store all the errors found
     /// Perform some automatic asumptions
     if ($sequence) {
         $unsigned = true;
         $notnull = true;
         $default = NULL;
     }
     if ($type != XMLDB_TYPE_NUMBER && $type != XMLDB_TYPE_FLOAT) {
         $decimals = NULL;
     }
     if ($type == XMLDB_TYPE_BINARY) {
         $default = NULL;
     }
     if ($default === '') {
         $default = NULL;
     }
     /// Perform some checks
     /// Check empty name
     if (empty($name)) {
         $errors[] = $this->str['fieldnameempty'];
     }
     /// Check incorrect name
     if ($name == 'changeme') {
         $errors[] = $this->str['incorrectfieldname'];
     }
     /// Check duplicate name
     if ($fieldparam != $name && $table->getField($name)) {
         $errors[] = $this->str['duplicatefieldname'];
     }
     /// Integer checks
     if ($type == XMLDB_TYPE_INTEGER) {
         if (!(is_numeric($length) && !empty($length) && intval($length) == floatval($length) && $length > 0 && $length <= 20)) {
             $errors[] = $this->str['integerincorrectlength'];
         }
         if (!(empty($default) || is_numeric($default) && !empty($default) && intval($default) == floatval($default))) {
             $errors[] = $this->str['defaultincorrect'];
         }
     }
     /// Number checks
     if ($type == XMLDB_TYPE_NUMBER) {
         if (!(is_numeric($length) && !empty($length) && intval($length) == floatval($length) && $length > 0 && $length <= 20)) {
             $errors[] = $this->str['numberincorrectlength'];
         }
         if (!(empty($decimals) || is_numeric($decimals) && !empty($decimals) && intval($decimals) == floatval($decimals) && $decimals >= 0 && $decimals < $length)) {
             $errors[] = $this->str['numberincorrectdecimals'];
         }
         if (!(empty($default) || is_numeric($default) && !empty($default))) {
             $errors[] = $this->str['defaultincorrect'];
         }
     }
     /// Float checks
     if ($type == XMLDB_TYPE_FLOAT) {
         if (!(empty($length) || is_numeric($length) && !empty($length) && intval($length) == floatval($length) && $length > 0 && $length <= 20)) {
             $errors[] = $this->str['floatincorrectlength'];
         }
         if (!(empty($decimals) || is_numeric($decimals) && !empty($decimals) && intval($decimals) == floatval($decimals) && $decimals >= 0 && $decimals < $length)) {
             $errors[] = $this->str['floatincorrectdecimals'];
         }
         if (!(empty($default) || is_numeric($default) && !empty($default))) {
             $errors[] = $this->str['defaultincorrect'];
         }
     }
     /// Char checks
     if ($type == XMLDB_TYPE_CHAR) {
         if (!(is_numeric($length) && !empty($length) && intval($length) == floatval($length) && $length > 0 && $length <= 255)) {
             $errors[] = $this->str['charincorrectlength'];
         }
         if ($default !== NULL && $default !== '') {
             if (substr($default, 0, 1) == "'" || substr($default, -1, 1) == "'") {
                 $errors[] = $this->str['defaultincorrect'];
             }
         }
     }
     /// Text checks
     if ($type == XMLDB_TYPE_TEXT) {
         if ($length != 'small' && $length != 'medium' && $length != 'big') {
             $errors[] = $this->str['textincorrectlength'];
         }
         if ($default !== NULL && $default !== '') {
             if (substr($default, 0, 1) == "'" || substr($default, -1, 1) == "'") {
                 $errors[] = $this->str['defaultincorrect'];
             }
         }
     }
     /// Binary checks
     if ($type == XMLDB_TYPE_BINARY) {
         if ($length != 'small' && $length != 'medium' && $length != 'big') {
             $errors[] = $this->str['binaryincorrectlength'];
         }
     }
     if (!empty($errors)) {
         $tempfield = new xmldb_field($name);
         $tempfield->setType($type);
         $tempfield->setLength($length);
         $tempfield->setDecimals($decimals);
         $tempfield->setUnsigned($unsigned);
         $tempfield->setNotNull($notnull);
         $tempfield->setSequence($sequence);
         $tempfield->setDefault($default);
         /// Prepare the output
         $site = get_site();
         $navlinks = array();
         $navlinks[] = array('name' => $this->str['administration'], 'link' => '../index.php', 'type' => 'misc');
         $navlinks[] = array('name' => 'XMLDB', 'link' => 'index.php', 'type' => 'misc');
         $navigation = build_navigation($navlinks);
         print_header("{$site->shortname}: XMLDB", "{$site->fullname}", $navigation);
         notice('<p>' . implode(', ', $errors) . '</p>
                  <p>' . $tempfield->readableInfo() . '</p>', 'index.php?action=edit_field&amp;field=' . $field->getName() . '&amp;table=' . $table->getName() . '&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)));
         die;
         /// re-die :-P
     }
     /// Continue if we aren't under errors
     if (empty($errors)) {
         /// If there is one name change, do it, changing the prev and next
         /// atributes of the adjacent fields
         if ($fieldparam != $name) {
             $field->setName($name);
             if ($field->getPrevious()) {
                 $prev =& $table->getField($field->getPrevious());
                 $prev->setNext($name);
                 $prev->setChanged(true);
             }
             if ($field->getNext()) {
                 $next =& $table->getField($field->getNext());
                 $next->setPrevious($name);
                 $next->setChanged(true);
             }
         }
         /// Set comment
         $field->setComment($comment);
         /// Set the rest of fields
         $field->setType($type);
         $field->setLength($length);
         $field->setDecimals($decimals);
         $field->setUnsigned($unsigned);
         $field->setNotNull($notnull);
         $field->setSequence($sequence);
         $field->setDefault($default);
         /// If the hash has changed from the old one, change the version
         /// and mark the structure as changed
         $field->calculateHash(true);
         if ($oldhash != $field->getHash()) {
             $field->setChanged(true);
             $table->setChanged(true);
             /// Recalculate the structure hash
             $structure->calculateHash(true);
             $structure->setVersion(userdate(time(), '%Y%m%d', 99, false));
             /// Mark as changed
             $structure->setChanged(true);
         }
         /// Launch postaction if exists (leave this here!)
         if ($this->getPostAction() && $result) {
             return $this->launch($this->getPostAction());
         }
     }
     /// Return ok if arrived here
     return $result;
 }
Example #25
0
 /**
  * Given one correct xmldb_field and the new name, returns the SQL statements
  * to rename it (inside one array).
  *
  * @param xmldb_table $xmldb_table The table related to $xmldb_field.
  * @param xmldb_field $xmldb_field The instance of xmldb_field to get the renamed field from.
  * @param string $newname The new name to rename the field to.
  * @return array The SQL statements for renaming the field.
  */
 public function getRenameFieldSQL($xmldb_table, $xmldb_field, $newname)
 {
     $results = array();
     //Array where all the sentences will be stored
     /// Although this is checked in database_manager::rename_field() - double check
     /// that we aren't trying to rename one "id" field. Although it could be
     /// implemented (if adding the necessary code to rename sequences, defaults,
     /// triggers... and so on under each getRenameFieldExtraSQL() function, it's
     /// better to forbid it, mainly because this field is the default PK and
     /// in the future, a lot of FKs can be pointing here. So, this field, more
     /// or less, must be considered immutable!
     if ($xmldb_field->getName() == 'id') {
         return array();
     }
     $rename = str_replace('TABLENAME', $this->getTableName($xmldb_table), $this->rename_column_sql);
     $rename = str_replace('OLDFIELDNAME', $this->getEncQuoted($xmldb_field->getName()), $rename);
     $rename = str_replace('NEWFIELDNAME', $this->getEncQuoted($newname), $rename);
     $results[] = $rename;
     /// Call to getRenameFieldExtraSQL(), override if needed
     $extra_sentences = $this->getRenameFieldExtraSQL($xmldb_table, $xmldb_field, $newname);
     $results = array_merge($results, $extra_sentences);
     return $results;
 }
Example #26
0
function xmldb_block_quickmail_upgrade($oldversion)
{
    global $DB;
    $result = true;
    $dbman = $DB->get_manager();
    // 1.9 to 2.0 upgrade
    if ($oldversion < 2011021812) {
        // Changing type of field attachment on table block_quickmail_log to text
        $table = new xmldb_table('block_quickmail_log');
        $field = new xmldb_field('attachment', XMLDB_TYPE_TEXT, 'small', null, XMLDB_NOTNULL, null, null, 'message');
        // Launch change of type for field attachment
        $dbman->change_field_type($table, $field);
        // Rename field timesent on table block_quickmail_log to time
        $table = new xmldb_table('block_quickmail_log');
        $field = new xmldb_field('timesent', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'format');
        // Conditionally launch rename field timesent
        if ($dbman->field_exists($table, $field)) {
            $dbman->rename_field($table, $field, 'time');
        }
        // Define table block_quickmail_signatures to be created
        $table = new xmldb_table('block_quickmail_signatures');
        // Adding fields to table block_quickmail_signatures
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '11', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('title', XMLDB_TYPE_CHAR, '125', null, null, null, null);
        $table->add_field('signature', XMLDB_TYPE_TEXT, 'medium', null, null, null, null);
        $table->add_field('default_flag', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '1');
        // Adding keys to table block_quickmail_signatures
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Conditionally launch create table for block_quickmail_signatures
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Define table block_quickmail_drafts to be created
        $table = new xmldb_table('block_quickmail_drafts');
        // Adding fields to table block_quickmail_drafts
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('courseid', XMLDB_TYPE_INTEGER, '11', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '11', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('mailto', XMLDB_TYPE_TEXT, 'medium', null, null, null, null);
        $table->add_field('subject', XMLDB_TYPE_TEXT, 'small', null, null, null, null);
        $table->add_field('message', XMLDB_TYPE_TEXT, 'medium', null, null, null, null);
        $table->add_field('attachment', XMLDB_TYPE_TEXT, 'small', null, XMLDB_NOTNULL, null, null);
        $table->add_field('format', XMLDB_TYPE_INTEGER, '3', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '1');
        $table->add_field('time', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null);
        // Adding keys to table block_quickmail_drafts
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Conditionally launch create table for block_quickmail_drafts
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Define table block_quickmail_config to be created
        $table = new xmldb_table('block_quickmail_config');
        // Adding fields to table block_quickmail_config
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('coursesid', XMLDB_TYPE_INTEGER, '11', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null);
        $table->add_field('name', XMLDB_TYPE_CHAR, '25', null, XMLDB_NOTNULL, null, null);
        $table->add_field('value', XMLDB_TYPE_CHAR, '125', null, null, null, null);
        // Adding keys to table block_quickmail_config
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Conditionally launch create table for block_quickmail_config
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // quickmail savepoint reached
        upgrade_block_savepoint($result, 2011021812, 'quickmail');
    }
    if ($oldversion < 2012021014) {
        $table = new xmldb_table('block_quickmail_alternate');
        $field = new xmldb_field('id');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, true, null, null);
        $table->addField($field);
        $field = new xmldb_field('courseid');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, false, null, 'id');
        $table->addField($field);
        $field = new xmldb_field('address');
        $field->set_attributes(XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, false, null, 'courseid');
        $table->addField($field);
        $field = new xmldb_field('valid');
        $field->set_attributes(XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, XMLDB_NOTNULL, false, '0', 'address');
        $table->addField($field);
        $key = new xmldb_key('PRIMARY');
        $key->set_attributes(XMLDB_KEY_PRIMARY, array('id'));
        $table->addKey($key);
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        foreach (array('log', 'drafts') as $table) {
            // Define field alternateid to be added to block_quickmail_log
            $table = new xmldb_table('block_quickmail_' . $table);
            $field = new xmldb_field('alternateid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null, 'userid');
            // Conditionally launch add field alternateid
            if (!$dbman->field_exists($table, $field)) {
                $dbman->add_field($table, $field);
            }
        }
        // quickmail savepoint reached
        upgrade_block_savepoint($result, 2012021014, 'quickmail');
    }
    if ($oldversion < 2012061112) {
        // Restructure database references to the new filearea locations
        foreach (array('log', 'drafts') as $type) {
            $params = array('component' => 'block_quickmail_' . $type, 'filearea' => 'attachment');
            $attachments = $DB->get_records('files', $params);
            foreach ($attachments as $attachment) {
                $attachment->filearea = 'attachment_' . $type;
                $attachment->component = 'block_quickmail';
                $result = $result && $DB->update_record('files', $attachment);
            }
        }
        upgrade_block_savepoint($result, 2012061112, 'quickmail');
    }
    if ($oldversion < 2012061112) {
        migrate_quickmail_20();
    }
    if ($oldversion < 2014042914) {
        // Define field status to be dropped from block_quickmail_log.
        $table = new xmldb_table('block_quickmail_log');
        $field = new xmldb_field('status');
        // Conditionally launch drop field status.
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Define field status to be added to block_quickmail_log.
        $table = new xmldb_table('block_quickmail_log');
        $field = new xmldb_field('failuserids', XMLDB_TYPE_TEXT, null, null, null, null, null, 'time');
        $field2 = new xmldb_field('additional_emails', XMLDB_TYPE_TEXT, null, null, null, null, null, 'failuserids');
        // Conditionally launch add field status.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        if (!$dbman->field_exists($table, $field2)) {
            $dbman->add_field($table, $field2);
        }
        // Define field additional_emails to be added to block_quickmail_drafts.
        $table = new xmldb_table('block_quickmail_drafts');
        $field = new xmldb_field('additional_emails', XMLDB_TYPE_TEXT, null, null, null, null, null, 'time');
        // Conditionally launch add field additional_emails.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Quickmail savepoint reached.
        upgrade_block_savepoint(true, 2014042914, 'quickmail');
    }
    return $result;
}
 function __construct($name)
 {
     parent::__construct($name);
 }
Example #28
0
 /**
  * Given one xmldb_table and one xmldb_field, return the SQL statements needed to alter the field in the table.
  *
  * PostgreSQL has some severe limits:
  *     - Any change of type or precision requires a new temporary column to be created, values to
  *       be transfered potentially casting them, to apply defaults if the column is not null and
  *       finally, to rename it
  *     - Changes in null/not null require the SET/DROP NOT NULL clause
  *     - Changes in default require the SET/DROP DEFAULT clause
  *
  * @param xmldb_table $xmldb_table The table related to $xmldb_field.
  * @param xmldb_field $xmldb_field The instance of xmldb_field to create the SQL from.
  * @param string $skip_type_clause The type clause on alter columns, NULL by default.
  * @param string $skip_default_clause The default clause on alter columns, NULL by default.
  * @param string $skip_notnull_clause The null/notnull clause on alter columns, NULL by default.
  * @return string The field altering SQL statement.
  */
 public function getAlterFieldSQL($xmldb_table, $xmldb_field, $skip_type_clause = NULL, $skip_default_clause = NULL, $skip_notnull_clause = NULL)
 {
     $results = array();
     // To store all the needed SQL commands
     // Get the normal names of the table and field
     $tablename = $xmldb_table->getName();
     $fieldname = $xmldb_field->getName();
     // Take a look to field metadata
     $meta = $this->mdb->get_columns($tablename);
     $metac = $meta[$xmldb_field->getName()];
     $oldmetatype = $metac->meta_type;
     $oldlength = $metac->max_length;
     $olddecimals = empty($metac->scale) ? null : $metac->scale;
     $oldnotnull = empty($metac->not_null) ? false : $metac->not_null;
     $olddefault = empty($metac->has_default) ? null : $metac->default_value;
     $typechanged = true;
     //By default, assume that the column type has changed
     $precisionchanged = true;
     //By default, assume that the column precision has changed
     $decimalchanged = true;
     //By default, assume that the column decimal has changed
     $defaultchanged = true;
     //By default, assume that the column default has changed
     $notnullchanged = true;
     //By default, assume that the column notnull has changed
     // Detect if we are changing the type of the column
     if ($xmldb_field->getType() == XMLDB_TYPE_INTEGER && $oldmetatype == 'I' || $xmldb_field->getType() == XMLDB_TYPE_NUMBER && $oldmetatype == 'N' || $xmldb_field->getType() == XMLDB_TYPE_FLOAT && $oldmetatype == 'F' || $xmldb_field->getType() == XMLDB_TYPE_CHAR && $oldmetatype == 'C' || $xmldb_field->getType() == XMLDB_TYPE_TEXT && $oldmetatype == 'X' || $xmldb_field->getType() == XMLDB_TYPE_BINARY && $oldmetatype == 'B') {
         $typechanged = false;
     }
     // Detect if we are changing the precision
     if ($xmldb_field->getType() == XMLDB_TYPE_TEXT || $xmldb_field->getType() == XMLDB_TYPE_BINARY || $oldlength == -1 || $xmldb_field->getLength() == $oldlength) {
         $precisionchanged = false;
     }
     // Detect if we are changing the decimals
     if ($xmldb_field->getType() == XMLDB_TYPE_INTEGER || $xmldb_field->getType() == XMLDB_TYPE_CHAR || $xmldb_field->getType() == XMLDB_TYPE_TEXT || $xmldb_field->getType() == XMLDB_TYPE_BINARY || !$xmldb_field->getDecimals() || !$olddecimals || $xmldb_field->getDecimals() == $olddecimals) {
         $decimalchanged = false;
     }
     // Detect if we are changing the default
     if ($xmldb_field->getDefault() === null && $olddefault === null || $xmldb_field->getDefault() === $olddefault) {
         $defaultchanged = false;
     }
     // Detect if we are changing the nullability
     if ($xmldb_field->getNotnull() === $oldnotnull) {
         $notnullchanged = false;
     }
     // Get the quoted name of the table and field
     $tablename = $this->getTableName($xmldb_table);
     $fieldname = $this->getEncQuoted($xmldb_field->getName());
     // Decide if we have changed the column specs (type/precision/decimals)
     $specschanged = $typechanged || $precisionchanged || $decimalchanged;
     // if specs have changed, need to alter column
     if ($specschanged) {
         // Always drop any exiting default before alter column (some type changes can cause casting error in default for column)
         if ($olddefault !== null) {
             $results[] = 'ALTER TABLE ' . $tablename . ' ALTER COLUMN ' . $fieldname . ' DROP DEFAULT';
             // Drop default clause
         }
         $alterstmt = 'ALTER TABLE ' . $tablename . ' ALTER COLUMN ' . $this->getEncQuoted($xmldb_field->getName()) . ' TYPE' . $this->getFieldSQL($xmldb_table, $xmldb_field, null, true, true, null, false);
         // Some castings must be performed explicitly (mainly from text|char to numeric|integer)
         if (($oldmetatype == 'C' || $oldmetatype == 'X') && ($xmldb_field->getType() == XMLDB_TYPE_NUMBER || $xmldb_field->getType() == XMLDB_TYPE_FLOAT)) {
             $alterstmt .= ' USING CAST(' . $fieldname . ' AS NUMERIC)';
             // from char or text to number or float
         } else {
             if (($oldmetatype == 'C' || $oldmetatype == 'X') && $xmldb_field->getType() == XMLDB_TYPE_INTEGER) {
                 $alterstmt .= ' USING CAST(CAST(' . $fieldname . ' AS NUMERIC) AS INTEGER)';
                 // From char to integer
             }
         }
         $results[] = $alterstmt;
     }
     // If the default has changed or we have performed one change in specs
     if ($defaultchanged || $specschanged) {
         $default_clause = $this->getDefaultClause($xmldb_field);
         if ($default_clause) {
             $sql = 'ALTER TABLE ' . $tablename . ' ALTER COLUMN ' . $fieldname . ' SET' . $default_clause;
             // Add default clause
             $results[] = $sql;
         } else {
             if (!$specschanged) {
                 // Only drop default if we haven't performed one specs change
                 $results[] = 'ALTER TABLE ' . $tablename . ' ALTER COLUMN ' . $fieldname . ' DROP DEFAULT';
                 // Drop default clause
             }
         }
     }
     // If the not null has changed
     if ($notnullchanged) {
         if ($xmldb_field->getNotnull()) {
             $results[] = 'ALTER TABLE ' . $tablename . ' ALTER COLUMN ' . $fieldname . ' SET NOT NULL';
         } else {
             $results[] = 'ALTER TABLE ' . $tablename . ' ALTER COLUMN ' . $fieldname . ' DROP NOT NULL';
         }
     }
     // Return the results
     return $results;
 }
 /**
  * Invoke method, every class will have its own
  * returns true/false on completion, setting both
  * errormsg and output as necessary
  */
 function invoke()
 {
     parent::invoke();
     $result = true;
     // Set own core attributes
     $this->does_generate = ACTION_GENERATE_HTML;
     // These are always here
     global $CFG, $XMLDB, $DB, $OUTPUT;
     // Do the job, setting result as needed
     // Get the dir containing the file
     $dirpath = required_param('dir', PARAM_PATH);
     $dirpath = $CFG->dirroot . $dirpath;
     // Get the correct dirs
     if (!empty($XMLDB->dbdirs)) {
         $dbdir = $XMLDB->dbdirs[$dirpath];
     } else {
         return false;
     }
     if (!empty($XMLDB->editeddirs)) {
         $editeddir = $XMLDB->editeddirs[$dirpath];
         $structure = $editeddir->xml_file->getStructure();
     }
     $tableparam = optional_param('table', NULL, PARAM_CLEAN);
     // If no table, show form
     if (!$tableparam) {
         // No postaction here
         $this->postaction = NULL;
         // Get list of tables
         $dbtables = $DB->get_tables();
         $selecttables = array();
         foreach ($dbtables as $dbtable) {
             $i = $structure->findTableInArray($dbtable);
             if ($i === NULL) {
                 $selecttables[$dbtable] = $dbtable;
             }
         }
         // Get list of after tables
         $aftertables = array();
         if ($tables = $structure->getTables()) {
             foreach ($tables as $aftertable) {
                 $aftertables[$aftertable->getName()] = $aftertable->getName();
             }
         }
         if (!$selecttables) {
             $this->errormsg = 'No tables available to be retrofitted';
             return false;
         }
         // Now build the form
         $o = '<form id="form" action="index.php" method="post">';
         $o .= '<div>';
         $o .= '    <input type="hidden" name ="dir" value="' . str_replace($CFG->dirroot, '', $dirpath) . '" />';
         $o .= '    <input type="hidden" name ="action" value="new_table_from_mysql" />';
         $o .= '    <input type="hidden" name ="postaction" value="edit_table" />';
         $o .= '    <input type="hidden" name ="sesskey" value="' . sesskey() . '" />';
         $o .= '    <table id="formelements" class="boxaligncenter" cellpadding="5">';
         $o .= '      <tr><td><label for="menutable" accesskey="t">' . $this->str['createtable'] . ' </label>' . html_writer::select($selecttables, 'table') . '<label for="menuafter" accesskey="a">' . $this->str['aftertable'] . ' </label>' . html_writer::select($aftertables, 'after') . '</td></tr>';
         $o .= '      <tr><td colspan="2" align="center"><input type="submit" value="' . $this->str['create'] . '" /></td></tr>';
         $o .= '      <tr><td colspan="2" align="center"><a href="index.php?action=edit_xml_file&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' . $this->str['back'] . ']</a></td></tr>';
         $o .= '    </table>';
         $o .= '</div></form>';
         $this->output = $o;
         // If table, retrofit information and, if everything works,
         // go to the table edit action
     } else {
         // Get some params (table is mandatory here)
         $tableparam = required_param('table', PARAM_CLEAN);
         $afterparam = required_param('after', PARAM_CLEAN);
         // Create one new xmldb_table
         $table = new xmldb_table(strtolower(trim($tableparam)));
         $table->setComment($table->getName() . ' table retrofitted from MySQL');
         // Get fields info from ADODb
         $dbfields = $DB->get_columns($tableparam);
         if ($dbfields) {
             foreach ($dbfields as $dbfield) {
                 // Create new XMLDB field
                 $field = new xmldb_field($dbfield->name);
                 // Set field with info retrofitted
                 $field->setFromADOField($dbfield);
                 // Add field to the table
                 $table->addField($field);
             }
         }
         // Get PK, UK and indexes info from ADODb
         $dbindexes = $DB->get_indexes($tableparam);
         if ($dbindexes) {
             $lastkey = NULL;
             //To temp store the last key processed
             foreach ($dbindexes as $indexname => $dbindex) {
                 // Add the indexname to the array
                 $dbindex['name'] = $indexname;
                 // We are handling one xmldb_key (primaries + uniques)
                 if ($dbindex['unique']) {
                     $key = new xmldb_key(strtolower($dbindex['name']));
                     // Set key with info retrofitted
                     $key->setFromADOKey($dbindex);
                     // Set default comment to PKs
                     if ($key->getType() == XMLDB_KEY_PRIMARY) {
                     }
                     // Add key to the table
                     $table->addKey($key);
                     // We are handling one xmldb_index (non-uniques)
                 } else {
                     $index = new xmldb_index(strtolower($dbindex['name']));
                     // Set index with info retrofitted
                     $index->setFromADOIndex($dbindex);
                     // Add index to the table
                     $table->addIndex($index);
                 }
             }
         }
         // Finally, add the whole retroffited table to the structure
         // in the place specified
         $structure->addTable($table, $afterparam);
     }
     // Launch postaction if exists (leave this here!)
     if ($this->getPostAction() && $result) {
         return $this->launch($this->getPostAction());
     }
     // Return ok if arrived here
     return $result;
 }
 /**
  * Given one correct xmldb_field and the new name, returns the SQL statements
  * to rename it (inside one array).
  *
  * @param xmldb_table $xmldb_table The table related to $xmldb_field.
  * @param xmldb_field $xmldb_field The instance of xmldb_field to get the renamed field from.
  * @param string $newname The new name to rename the field to.
  * @return array The SQL statements for renaming the field.
  */
 public function getRenameFieldSQL($xmldb_table, $xmldb_field, $newname)
 {
     // NOTE: MySQL is pretty different from the standard to justify this overloading.
     // Need a clone of xmldb_field to perform the change leaving original unmodified
     $xmldb_field_clone = clone $xmldb_field;
     // Change the name of the field to perform the change
     $xmldb_field_clone->setName($newname);
     $fieldsql = $this->getFieldSQL($xmldb_table, $xmldb_field_clone);
     $sql = 'ALTER TABLE ' . $this->getTableName($xmldb_table) . ' CHANGE ' . $xmldb_field->getName() . ' ' . $fieldsql;
     return array($sql);
 }