示例#1
0
/**
 * Main upgrade tasks to be executed on Moodle version bump
 *
 * This function is automatically executed after one bump in the Moodle core
 * version is detected. It's in charge of performing the required tasks
 * to raise core from the previous version to the next one.
 *
 * It's a collection of ordered blocks of code, named "upgrade steps",
 * each one performing one isolated (from the rest of steps) task. Usually
 * tasks involve creating new DB objects or performing manipulation of the
 * information for cleanup/fixup purposes.
 *
 * Each upgrade step has a fixed structure, that can be summarised as follows:
 *
 * if ($oldversion < XXXXXXXXXX.XX) {
 *     // Explanation of the update step, linking to issue in the Tracker if necessary
 *     upgrade_set_timeout(XX); // Optional for big tasks
 *     // Code to execute goes here, usually the XMLDB Editor will
 *     // help you here. See {@link http://docs.moodle.org/dev/XMLDB_editor}.
 *     upgrade_main_savepoint(true, XXXXXXXXXX.XX);
 * }
 *
 * All plugins within Moodle (modules, blocks, reports...) support the existence of
 * their own upgrade.php file, using the "Frankenstyle" component name as
 * defined at {@link http://docs.moodle.org/dev/Frankenstyle}, for example:
 *     - {@link xmldb_page_upgrade($oldversion)}. (modules don't require the plugintype ("mod_") to be used.
 *     - {@link xmldb_auth_manual_upgrade($oldversion)}.
 *     - {@link xmldb_workshopform_accumulative_upgrade($oldversion)}.
 *     - ....
 *
 * In order to keep the contents of this file reduced, it's allowed to create some helper
 * functions to be used here in the {@link upgradelib.php} file at the same directory. Note
 * that such a file must be manually included from upgrade.php, and there are some restrictions
 * about what can be used within it.
 *
 * For more information, take a look to the documentation available:
 *     - Data definition API: {@link http://docs.moodle.org/dev/Data_definition_API}
 *     - Upgrade API: {@link http://docs.moodle.org/dev/Upgrade_API}
 *
 * @param int $oldversion
 * @return bool always true
 */
function xmldb_main_upgrade($oldversion)
{
    global $CFG, $DB;
    require_once $CFG->libdir . '/db/upgradelib.php';
    // Core Upgrade-related functions.
    $dbman = $DB->get_manager();
    // Loads ddl manager and xmldb classes.
    // Always keep this upgrade step with version being the minimum
    // allowed version to upgrade from (v2.7.0 right now).
    if ($oldversion < 2014051200) {
        // Just in case somebody hacks upgrade scripts or env, we really can not continue.
        echo "You need to upgrade to 2.7.x or higher first!\n";
        exit(1);
        // Note this savepoint is 100% unreachable, but needed to pass the upgrade checks.
        upgrade_main_savepoint(true, 2014051200);
    }
    // MDL-32543 Make sure that the log table has correct length for action and url fields.
    if ($oldversion < 2014051200.02) {
        $table = new xmldb_table('log');
        $columns = $DB->get_columns('log');
        if ($columns['action']->max_length < 40) {
            $index1 = new xmldb_index('course-module-action', XMLDB_INDEX_NOTUNIQUE, array('course', 'module', 'action'));
            if ($dbman->index_exists($table, $index1)) {
                $dbman->drop_index($table, $index1);
            }
            $index2 = new xmldb_index('action', XMLDB_INDEX_NOTUNIQUE, array('action'));
            if ($dbman->index_exists($table, $index2)) {
                $dbman->drop_index($table, $index2);
            }
            $field = new xmldb_field('action', XMLDB_TYPE_CHAR, '40', null, XMLDB_NOTNULL, null, null, 'cmid');
            $dbman->change_field_precision($table, $field);
            $dbman->add_index($table, $index1);
            $dbman->add_index($table, $index2);
        }
        if ($columns['url']->max_length < 100) {
            $field = new xmldb_field('url', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null, 'action');
            $dbman->change_field_precision($table, $field);
        }
        upgrade_main_savepoint(true, 2014051200.02);
    }
    if ($oldversion < 2014060300.0) {
        $gspath = get_config('assignfeedback_editpdf', 'gspath');
        if ($gspath !== false) {
            set_config('pathtogs', $gspath);
            unset_config('gspath', 'assignfeedback_editpdf');
        }
        upgrade_main_savepoint(true, 2014060300.0);
    }
    if ($oldversion < 2014061000.0) {
        // Fixing possible wrong MIME type for Publisher files.
        $filetypes = array('%.pub' => 'application/x-mspublisher');
        upgrade_mimetypes($filetypes);
        upgrade_main_savepoint(true, 2014061000.0);
    }
    if ($oldversion < 2014062600.01) {
        // We only want to delete DragMath if the directory no longer exists. If the directory
        // is present then it means it has been restored, so do not perform the uninstall.
        if (!check_dir_exists($CFG->libdir . '/editor/tinymce/plugins/dragmath', false)) {
            // Purge DragMath plugin which is incompatible with GNU GPL license.
            unset_all_config_for_plugin('tinymce_dragmath');
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014062600.01);
    }
    // Switch the order of the fields in the files_reference index, to improve the performance of search_references.
    if ($oldversion < 2014070100.0) {
        $table = new xmldb_table('files_reference');
        $index = new xmldb_index('uq_external_file', XMLDB_INDEX_UNIQUE, array('repositoryid', 'referencehash'));
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        upgrade_main_savepoint(true, 2014070100.0);
    }
    if ($oldversion < 2014070101.0) {
        $table = new xmldb_table('files_reference');
        $index = new xmldb_index('uq_external_file', XMLDB_INDEX_UNIQUE, array('referencehash', 'repositoryid'));
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        upgrade_main_savepoint(true, 2014070101.0);
    }
    if ($oldversion < 2014072400.01) {
        $table = new xmldb_table('user_devices');
        $oldindex = new xmldb_index('pushid-platform', XMLDB_KEY_UNIQUE, array('pushid', 'platform'));
        if ($dbman->index_exists($table, $oldindex)) {
            $key = new xmldb_key('pushid-platform', XMLDB_KEY_UNIQUE, array('pushid', 'platform'));
            $dbman->drop_key($table, $key);
        }
        upgrade_main_savepoint(true, 2014072400.01);
    }
    if ($oldversion < 2014080801.0) {
        // Define index behaviour (not unique) to be added to question_attempts.
        $table = new xmldb_table('question_attempts');
        $index = new xmldb_index('behaviour', XMLDB_INDEX_NOTUNIQUE, array('behaviour'));
        // Conditionally launch add index behaviour.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014080801.0);
    }
    if ($oldversion < 2014082900.01) {
        // Fixing possible wrong MIME type for 7-zip and Rar files.
        $filetypes = array('%.7z' => 'application/x-7z-compressed', '%.rar' => 'application/x-rar-compressed');
        upgrade_mimetypes($filetypes);
        upgrade_main_savepoint(true, 2014082900.01);
    }
    if ($oldversion < 2014082900.02) {
        // Replace groupmembersonly usage with new availability system.
        $transaction = $DB->start_delegated_transaction();
        if ($CFG->enablegroupmembersonly) {
            // If it isn't already enabled, we need to enable availability.
            if (!$CFG->enableavailability) {
                set_config('enableavailability', 1);
            }
            // Count all course-modules with groupmembersonly set (for progress
            // bar).
            $total = $DB->count_records('course_modules', array('groupmembersonly' => 1));
            $pbar = new progress_bar('upgradegroupmembersonly', 500, true);
            // Get all these course-modules, one at a time.
            $rs = $DB->get_recordset('course_modules', array('groupmembersonly' => 1), 'course, id');
            $i = 0;
            foreach ($rs as $cm) {
                // Calculate and set new availability value.
                $availability = upgrade_group_members_only($cm->groupingid, $cm->availability);
                $DB->set_field('course_modules', 'availability', $availability, array('id' => $cm->id));
                // Update progress.
                $i++;
                $pbar->update($i, $total, "Upgrading groupmembersonly settings - {$i}/{$total}.");
            }
            $rs->close();
        }
        // Define field groupmembersonly to be dropped from course_modules.
        $table = new xmldb_table('course_modules');
        $field = new xmldb_field('groupmembersonly');
        // Conditionally launch drop field groupmembersonly.
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Unset old config variable.
        unset_config('enablegroupmembersonly');
        $transaction->allow_commit();
        upgrade_main_savepoint(true, 2014082900.02);
    }
    if ($oldversion < 2014100100.0) {
        // Define table messageinbound_handlers to be created.
        $table = new xmldb_table('messageinbound_handlers');
        // Adding fields to table messageinbound_handlers.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('component', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null);
        $table->add_field('classname', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('defaultexpiration', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '86400');
        $table->add_field('validateaddress', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '1');
        $table->add_field('enabled', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0');
        // Adding keys to table messageinbound_handlers.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('classname', XMLDB_KEY_UNIQUE, array('classname'));
        // Conditionally launch create table for messageinbound_handlers.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Define table messageinbound_datakeys to be created.
        $table = new xmldb_table('messageinbound_datakeys');
        // Adding fields to table messageinbound_datakeys.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('handler', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('datavalue', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('datakey', XMLDB_TYPE_CHAR, '64', null, null, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('expires', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        // Adding keys to table messageinbound_datakeys.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('handler_datavalue', XMLDB_KEY_UNIQUE, array('handler', 'datavalue'));
        $table->add_key('handler', XMLDB_KEY_FOREIGN, array('handler'), 'messageinbound_handlers', array('id'));
        // Conditionally launch create table for messageinbound_datakeys.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100100.0);
    }
    if ($oldversion < 2014100600.01) {
        // Define field aggregationstatus to be added to grade_grades.
        $table = new xmldb_table('grade_grades');
        $field = new xmldb_field('aggregationstatus', XMLDB_TYPE_CHAR, '10', null, XMLDB_NOTNULL, null, 'unknown', 'timemodified');
        // Conditionally launch add field aggregationstatus.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('aggregationweight', XMLDB_TYPE_NUMBER, '10, 5', null, null, null, null, 'aggregationstatus');
        // Conditionally launch add field aggregationweight.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Define field aggregationcoef2 to be added to grade_items.
        $table = new xmldb_table('grade_items');
        $field = new xmldb_field('aggregationcoef2', XMLDB_TYPE_NUMBER, '10, 5', null, XMLDB_NOTNULL, null, '0', 'aggregationcoef');
        // Conditionally launch add field aggregationcoef2.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('weightoverride', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'needsupdate');
        // Conditionally launch add field weightoverride.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100600.01);
    }
    if ($oldversion < 2014100600.02) {
        // Define field aggregationcoef2 to be added to grade_items_history.
        $table = new xmldb_table('grade_items_history');
        $field = new xmldb_field('aggregationcoef2', XMLDB_TYPE_NUMBER, '10, 5', null, XMLDB_NOTNULL, null, '0', 'aggregationcoef');
        // Conditionally launch add field aggregationcoef2.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100600.02);
    }
    if ($oldversion < 2014100600.03) {
        // Define field weightoverride to be added to grade_items_history.
        $table = new xmldb_table('grade_items_history');
        $field = new xmldb_field('weightoverride', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'decimals');
        // Conditionally launch add field weightoverride.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100600.03);
    }
    if ($oldversion < 2014100600.04) {
        // Set flags so we can display a notice on all courses that might
        // be affected by the uprade to natural aggregation.
        if (!get_config('grades_sumofgrades_upgrade_flagged', 'core')) {
            // 13 == SUM_OF_GRADES.
            $sql = 'SELECT DISTINCT courseid
                      FROM {grade_categories}
                     WHERE aggregation = ?';
            $courses = $DB->get_records_sql($sql, array(13));
            foreach ($courses as $course) {
                set_config('show_sumofgrades_upgrade_' . $course->courseid, 1);
                // Set each of the grade items to needing an update so that when the user visits the grade reports the
                // figures will be updated.
                $DB->set_field('grade_items', 'needsupdate', 1, array('courseid' => $course->courseid));
            }
            set_config('grades_sumofgrades_upgrade_flagged', 1);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100600.04);
    }
    if ($oldversion < 2014100700.0) {
        // Define table messageinbound_messagelist to be created.
        $table = new xmldb_table('messageinbound_messagelist');
        // Adding fields to table messageinbound_messagelist.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('messageid', XMLDB_TYPE_TEXT, null, null, XMLDB_NOTNULL, null, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('address', XMLDB_TYPE_TEXT, null, null, XMLDB_NOTNULL, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table messageinbound_messagelist.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        // Conditionally launch create table for messageinbound_messagelist.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100700.0);
    }
    if ($oldversion < 2014100700.01) {
        // Define field visible to be added to cohort.
        $table = new xmldb_table('cohort');
        $field = new xmldb_field('visible', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '1', 'descriptionformat');
        // Conditionally launch add field visible.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100700.01);
    }
    if ($oldversion < 2014100800.0) {
        // Remove qformat_learnwise (unless it has manually been added back).
        if (!file_exists($CFG->dirroot . '/question/format/learnwise/format.php')) {
            unset_all_config_for_plugin('qformat_learnwise');
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100800.0);
    }
    if ($oldversion < 2014101001.0) {
        // Some blocks added themselves to the my/ home page, but they did not declare the
        // subpage of the default my home page. While the upgrade script has been fixed, this
        // upgrade script will fix the data that was wrongly added.
        // We only proceed if we can find the right entry from my_pages. Private => 1 refers to
        // the constant value MY_PAGE_PRIVATE.
        if ($systempage = $DB->get_record('my_pages', array('userid' => null, 'private' => 1))) {
            // Select the blocks there could have been automatically added. showinsubcontexts is hardcoded to 0
            // because it is possible for administrators to have forced it on the my/ page by adding it to the
            // system directly rather than updating the default my/ page.
            $blocks = array('course_overview', 'private_files', 'online_users', 'badges', 'calendar_month', 'calendar_upcoming');
            list($blocksql, $blockparams) = $DB->get_in_or_equal($blocks, SQL_PARAMS_NAMED);
            $select = "parentcontextid = :contextid\n                    AND pagetypepattern = :page\n                    AND showinsubcontexts = 0\n                    AND subpagepattern IS NULL\n                    AND blockname {$blocksql}";
            $params = array('contextid' => context_system::instance()->id, 'page' => 'my-index');
            $params = array_merge($params, $blockparams);
            $DB->set_field_select('block_instances', 'subpagepattern', $systempage->id, $select, $params);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014101001.0);
    }
    if ($oldversion < 2014102000.0) {
        // Define field aggregatesubcats to be dropped from grade_categories.
        $table = new xmldb_table('grade_categories');
        $field = new xmldb_field('aggregatesubcats');
        // Conditionally launch drop field aggregatesubcats.
        if ($dbman->field_exists($table, $field)) {
            $sql = 'SELECT DISTINCT courseid
                      FROM {grade_categories}
                     WHERE aggregatesubcats = ?';
            $courses = $DB->get_records_sql($sql, array(1));
            foreach ($courses as $course) {
                set_config('show_aggregatesubcats_upgrade_' . $course->courseid, 1);
                // Set each of the grade items to needing an update so that when the user visits the grade reports the
                // figures will be updated.
                $DB->set_field('grade_items', 'needsupdate', 1, array('courseid' => $course->courseid));
            }
            $dbman->drop_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014102000.0);
    }
    if ($oldversion < 2014110300.0) {
        // Run script restoring missing folder records for draft file areas.
        upgrade_fix_missing_root_folders_draft();
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014110300.0);
    }
    // Moodle v2.8.0 release upgrade line.
    // Put any upgrade step following this.
    if ($oldversion < 2014111000.0) {
        // Coming from 2.7 or older, we need to flag the step minmaxgrade to be ignored.
        set_config('upgrade_minmaxgradestepignored', 1);
        // Coming from 2.7 or older, we need to flag the step for changing calculated grades to be regraded.
        set_config('upgrade_calculatedgradeitemsonlyregrade', 1);
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014111000.0);
    }
    if ($oldversion < 2014120100.0) {
        // Define field sslverification to be added to mnet_host.
        $table = new xmldb_table('mnet_host');
        $field = new xmldb_field('sslverification', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'applicationid');
        // Conditionally launch add field sslverification.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014120100.0);
    }
    if ($oldversion < 2014120101.0) {
        // Define field component to be added to comments.
        $table = new xmldb_table('comments');
        $field = new xmldb_field('component', XMLDB_TYPE_CHAR, '255', null, null, null, null, 'contextid');
        // Conditionally launch add field component.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014120101.0);
    }
    if ($oldversion < 2014120102.0) {
        // Define table user_password_history to be created.
        $table = new xmldb_table('user_password_history');
        // Adding fields to table user_password_history.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('hash', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table user_password_history.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        // Conditionally launch create table for user_password_history.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014120102.0);
    }
    if ($oldversion < 2015010800.01) {
        // Make sure the private files handler is not set to expire.
        $DB->set_field('messageinbound_handlers', 'defaultexpiration', 0, array('classname' => '\\core\\message\\inbound\\private_files_handler'));
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015010800.01);
    }
    if ($oldversion < 2015012600.0) {
        // If the site is using internal and external storage, or just external
        // storage, and the external path specified is empty we change the setting
        // to internal only. That is how the backup code is handling this
        // misconfiguration.
        $storage = (int) get_config('backup', 'backup_auto_storage');
        $folder = get_config('backup', 'backup_auto_destination');
        if ($storage !== 0 && empty($folder)) {
            set_config('backup_auto_storage', 0, 'backup');
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015012600.0);
    }
    if ($oldversion < 2015012600.01) {
        // Convert calendar_lookahead to nearest new value.
        $value = $DB->get_field('config', 'value', array('name' => 'calendar_lookahead'));
        if ($value > 90) {
            set_config('calendar_lookahead', '120');
        } else {
            if ($value > 60 and $value < 90) {
                set_config('calendar_lookahead', '90');
            } else {
                if ($value > 30 and $value < 60) {
                    set_config('calendar_lookahead', '60');
                } else {
                    if ($value > 21 and $value < 30) {
                        set_config('calendar_lookahead', '30');
                    } else {
                        if ($value > 14 and $value < 21) {
                            set_config('calendar_lookahead', '21');
                        } else {
                            if ($value > 7 and $value < 14) {
                                set_config('calendar_lookahead', '14');
                            }
                        }
                    }
                }
            }
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015012600.01);
    }
    if ($oldversion < 2015021100.0) {
        // Define field timemodified to be added to registration_hubs.
        $table = new xmldb_table('registration_hubs');
        $field = new xmldb_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'secret');
        // Conditionally launch add field timemodified.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015021100.0);
    }
    if ($oldversion < 2015022401.0) {
        // Define index useridfromto (not unique) to be added to message.
        $table = new xmldb_table('message');
        $index = new xmldb_index('useridfromto', XMLDB_INDEX_NOTUNIQUE, array('useridfrom', 'useridto'));
        // Conditionally launch add index useridfromto.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Define index useridfromto (not unique) to be added to message_read.
        $table = new xmldb_table('message_read');
        $index = new xmldb_index('useridfromto', XMLDB_INDEX_NOTUNIQUE, array('useridfrom', 'useridto'));
        // Conditionally launch add index useridfromto.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015022401.0);
    }
    if ($oldversion < 2015022500.0) {
        $table = new xmldb_table('user_devices');
        $index = new xmldb_index('uuid-userid', XMLDB_INDEX_NOTUNIQUE, array('uuid', 'userid'));
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        upgrade_main_savepoint(true, 2015022500.0);
    }
    if ($oldversion < 2015030400.0) {
        // We have long since switched to storing timemodified per hub rather than a single 'registered' timestamp.
        unset_config('registered');
        upgrade_main_savepoint(true, 2015030400.0);
    }
    if ($oldversion < 2015031100.0) {
        // Unset old config variable.
        unset_config('enabletgzbackups');
        upgrade_main_savepoint(true, 2015031100.0);
    }
    if ($oldversion < 2015031400.0) {
        // Define index useridfrom (not unique) to be dropped form message.
        $table = new xmldb_table('message');
        $index = new xmldb_index('useridfrom', XMLDB_INDEX_NOTUNIQUE, array('useridfrom'));
        // Conditionally launch drop index useridfrom.
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Define index useridfrom (not unique) to be dropped form message_read.
        $table = new xmldb_table('message_read');
        $index = new xmldb_index('useridfrom', XMLDB_INDEX_NOTUNIQUE, array('useridfrom'));
        // Conditionally launch drop index useridfrom.
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015031400.0);
    }
    if ($oldversion < 2015031900.01) {
        unset_config('crontime', 'registration');
        upgrade_main_savepoint(true, 2015031900.01);
    }
    if ($oldversion < 2015032000.0) {
        $table = new xmldb_table('badge_criteria');
        $field = new xmldb_field('description', XMLDB_TYPE_TEXT, null, null, null, null, null);
        // Conditionally add description field to the badge_criteria table.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('descriptionformat', XMLDB_TYPE_INTEGER, 2, null, XMLDB_NOTNULL, null, 0);
        // Conditionally add description format field to the badge_criteria table.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        upgrade_main_savepoint(true, 2015032000.0);
    }
    if ($oldversion < 2015040200.01) {
        // Force uninstall of deleted tool.
        if (!file_exists("{$CFG->dirroot}/{$CFG->admin}/tool/timezoneimport")) {
            // Remove capabilities.
            capabilities_cleanup('tool_timezoneimport');
            // Remove all other associated config.
            unset_all_config_for_plugin('tool_timezoneimport');
        }
        upgrade_main_savepoint(true, 2015040200.01);
    }
    if ($oldversion < 2015040200.02) {
        // Define table timezone to be dropped.
        $table = new xmldb_table('timezone');
        // Conditionally launch drop table for timezone.
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        upgrade_main_savepoint(true, 2015040200.02);
    }
    if ($oldversion < 2015040200.03) {
        if (isset($CFG->timezone) and $CFG->timezone == 99) {
            // Migrate to real server timezone.
            unset_config('timezone');
        }
        upgrade_main_savepoint(true, 2015040200.03);
    }
    if ($oldversion < 2015040700.01) {
        $DB->delete_records('config_plugins', array('name' => 'requiremodintro'));
        upgrade_main_savepoint(true, 2015040700.01);
    }
    if ($oldversion < 2015040900.01) {
        // Add "My grades" to the user menu.
        $oldconfig = get_config('core', 'customusermenuitems');
        if (strpos("mygrades,grades|/grade/report/mygrades.php|grades", $oldconfig) === false) {
            $newconfig = "mygrades,grades|/grade/report/mygrades.php|grades\n" . $oldconfig;
            set_config('customusermenuitems', $newconfig);
        }
        upgrade_main_savepoint(true, 2015040900.01);
    }
    if ($oldversion < 2015040900.02) {
        // Update the default user menu (add preferences, remove my files and my badges).
        $oldconfig = get_config('core', 'customusermenuitems');
        // Add "My preferences" at the end.
        if (strpos($oldconfig, "mypreferences,moodle|/user/preference.php|preferences") === false) {
            $newconfig = $oldconfig . "\nmypreferences,moodle|/user/preferences.php|preferences";
        } else {
            $newconfig = $oldconfig;
        }
        // Remove my files.
        $newconfig = str_replace("myfiles,moodle|/user/files.php|download", "", $newconfig);
        // Remove my badges.
        $newconfig = str_replace("mybadges,badges|/badges/mybadges.php|award", "", $newconfig);
        // Remove holes.
        $newconfig = preg_replace('/\\n+/', "\n", $newconfig);
        $newconfig = preg_replace('/(\\r\\n)+/', "\n", $newconfig);
        set_config('customusermenuitems', $newconfig);
        upgrade_main_savepoint(true, 2015040900.02);
    }
    if ($oldversion < 2015050400.0) {
        $config = get_config('core', 'customusermenuitems');
        // Change "My preferences" in the user menu to "Preferences".
        $config = str_replace("mypreferences,moodle|/user/preferences.php|preferences", "preferences,moodle|/user/preferences.php|preferences", $config);
        // Change "My grades" in the user menu to "Grades".
        $config = str_replace("mygrades,grades|/grade/report/mygrades.php|grades", "grades,grades|/grade/report/mygrades.php|grades", $config);
        set_config('customusermenuitems', $config);
        upgrade_main_savepoint(true, 2015050400.0);
    }
    if ($oldversion < 2015050401.0) {
        // Make sure we have messages in the user menu because it's no longer in the nav tree.
        $oldconfig = get_config('core', 'customusermenuitems');
        $messagesconfig = "messages,message|/message/index.php|message";
        $preferencesconfig = "preferences,moodle|/user/preferences.php|preferences";
        // See if it exists.
        if (strpos($oldconfig, $messagesconfig) === false) {
            // See if preferences exists.
            if (strpos($oldconfig, "preferences,moodle|/user/preferences.php|preferences") !== false) {
                // Insert it before preferences.
                $newconfig = str_replace($preferencesconfig, $messagesconfig . "\n" . $preferencesconfig, $oldconfig);
            } else {
                // Custom config - we can only insert it at the end.
                $newconfig = $oldconfig . "\n" . $messagesconfig;
            }
            set_config('customusermenuitems', $newconfig);
        }
        upgrade_main_savepoint(true, 2015050401.0);
    }
    // Moodle v2.9.0 release upgrade line.
    // Put any upgrade step following this.
    if ($oldversion < 2015060400.02) {
        // Sites that were upgrading from 2.7 and older will ignore this step.
        if (empty($CFG->upgrade_minmaxgradestepignored)) {
            upgrade_minmaxgrade();
            // Flags this upgrade step as already run to prevent it from running multiple times.
            set_config('upgrade_minmaxgradestepignored', 1);
        }
        upgrade_main_savepoint(true, 2015060400.02);
    }
    if ($oldversion < 2015061900.0) {
        // MDL-49257. Changed the algorithm of calculating automatic weights of extra credit items.
        // Before the change, in case when grade category (in "Natural" agg. method) had items with
        // overridden weights, the automatic weight of extra credit items was illogical.
        // In order to prevent grades changes after the upgrade we need to freeze gradebook calculation
        // for the affected courses.
        // This script in included in each major version upgrade process so make sure we don't run it twice.
        if (empty($CFG->upgrade_extracreditweightsstepignored)) {
            upgrade_extra_credit_weightoverride();
            // To skip running the same script on the upgrade to the next major release.
            set_config('upgrade_extracreditweightsstepignored', 1);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015061900.0);
    }
    if ($oldversion < 2015062500.01) {
        // MDL-48239. Changed calculated grade items so that the maximum and minimum grade can be set.
        // If the changes are accepted and a regrade is done on the gradebook then some grades may change significantly.
        // This is here to freeze the gradebook in affected courses.
        // This script is included in each major version upgrade process so make sure we don't run it twice.
        if (empty($CFG->upgrade_calculatedgradeitemsignored)) {
            upgrade_calculated_grade_items();
            // To skip running the same script on the upgrade to the next major release.
            set_config('upgrade_calculatedgradeitemsignored', 1);
            // This config value is never used again.
            unset_config('upgrade_calculatedgradeitemsonlyregrade');
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015062500.01);
    }
    if ($oldversion < 2015081300.01) {
        // Define field importtype to be added to grade_import_values.
        $table = new xmldb_table('grade_import_values');
        $field = new xmldb_field('importonlyfeedback', XMLDB_TYPE_INTEGER, '1', null, null, null, '0', 'importer');
        // Conditionally launch add field importtype.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015081300.01);
    }
    if ($oldversion < 2015082400.0) {
        // Define table webdav_locks to be dropped.
        $table = new xmldb_table('webdav_locks');
        // Conditionally launch drop table for webdav_locks.
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015082400.0);
    }
    if ($oldversion < 2015090200.0) {
        $table = new xmldb_table('message');
        // Define the deleted fields to be added to the message tables.
        $field1 = new xmldb_field('timeuserfromdeleted', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'timecreated');
        $field2 = new xmldb_field('timeusertodeleted', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'timecreated');
        $oldindex = new xmldb_index('useridfromto', XMLDB_INDEX_NOTUNIQUE, array('useridfrom', 'useridto'));
        $newindex = new xmldb_index('useridfromtodeleted', XMLDB_INDEX_NOTUNIQUE, array('useridfrom', 'useridto', 'timeuserfromdeleted', 'timeusertodeleted'));
        // Conditionally launch add field timeuserfromdeleted.
        if (!$dbman->field_exists($table, $field1)) {
            $dbman->add_field($table, $field1);
        }
        // Conditionally launch add field timeusertodeleted.
        if (!$dbman->field_exists($table, $field2)) {
            $dbman->add_field($table, $field2);
        }
        // Conditionally launch drop index useridfromto.
        if ($dbman->index_exists($table, $oldindex)) {
            $dbman->drop_index($table, $oldindex);
        }
        // Conditionally launch add index useridfromtodeleted.
        if (!$dbman->index_exists($table, $newindex)) {
            $dbman->add_index($table, $newindex);
        }
        // Now add them to the message_read table.
        $table = new xmldb_table('message_read');
        // Conditionally launch add field timeuserfromdeleted.
        if (!$dbman->field_exists($table, $field1)) {
            $dbman->add_field($table, $field1);
        }
        // Conditionally launch add field timeusertodeleted.
        if (!$dbman->field_exists($table, $field2)) {
            $dbman->add_field($table, $field2);
        }
        // Conditionally launch drop index useridfromto.
        if ($dbman->index_exists($table, $oldindex)) {
            $dbman->drop_index($table, $oldindex);
        }
        // Conditionally launch add index useridfromtodeleted.
        if (!$dbman->index_exists($table, $newindex)) {
            $dbman->add_index($table, $newindex);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015090200.0);
    }
    if ($oldversion < 2015090801.0) {
        // This upgrade script merges all tag instances pointing to the same course tag.
        // User id is no longer used for those tag instances.
        upgrade_course_tags();
        // If configuration variable "Show course tags" is set, disable the block
        // 'tags' because it can not be used for tagging courses any more.
        if (!empty($CFG->block_tags_showcoursetags)) {
            if ($record = $DB->get_record('block', array('name' => 'tags'), 'id, visible')) {
                if ($record->visible) {
                    $DB->update_record('block', array('id' => $record->id, 'visible' => 0));
                }
            }
        }
        // Define index idname (unique) to be dropped form tag (it's really weird).
        $table = new xmldb_table('tag');
        $index = new xmldb_index('idname', XMLDB_INDEX_UNIQUE, array('id', 'name'));
        // Conditionally launch drop index idname.
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015090801.0);
    }
    if ($oldversion < 2015092200.0) {
        // Define index qtype (not unique) to be added to question.
        $table = new xmldb_table('question');
        $index = new xmldb_index('qtype', XMLDB_INDEX_NOTUNIQUE, array('qtype'));
        // Conditionally launch add index qtype.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015092200.0);
    }
    if ($oldversion < 2015092900.0) {
        // Rename backup_auto_keep setting to backup_auto_max_kept.
        $keep = get_config('backup', 'backup_auto_keep');
        if ($keep !== false) {
            set_config('backup_auto_max_kept', $keep, 'backup');
            unset_config('backup_auto_keep', 'backup');
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015092900.0);
    }
    if ($oldversion < 2015100600.0) {
        // Define index notification (not unique) to be added to message_read.
        $table = new xmldb_table('message_read');
        $index = new xmldb_index('notificationtimeread', XMLDB_INDEX_NOTUNIQUE, array('notification', 'timeread'));
        // Conditionally launch add index notification.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015100600.0);
    }
    if ($oldversion < 2015100800.01) {
        // The only flag for preventing all plugins installation features is
        // now $CFG->disableupdateautodeploy in config.php.
        unset_config('updateautodeploy');
        upgrade_main_savepoint(true, 2015100800.01);
    }
    // Moodle v3.0.0 release upgrade line.
    // Put any upgrade step following this.
    if ($oldversion < 2016011300.01) {
        // This is a big upgrade script. We create new table tag_coll and the field
        // tag.tagcollid pointing to it.
        // Define table tag_coll to be created.
        $table = new xmldb_table('tag_coll');
        // Adding fields to table tagcloud.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('name', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        $table->add_field('isdefault', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('component', XMLDB_TYPE_CHAR, '100', null, null, null, null);
        $table->add_field('sortorder', XMLDB_TYPE_INTEGER, '5', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('searchable', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '1');
        $table->add_field('customurl', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        // Adding keys to table tagcloud.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Conditionally launch create table for tagcloud.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Table {tag}.
        // Define index name (unique) to be dropped form tag - we will replace it with index on (tagcollid,name) later.
        $table = new xmldb_table('tag');
        $index = new xmldb_index('name', XMLDB_INDEX_UNIQUE, array('name'));
        // Conditionally launch drop index name.
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Define field tagcollid to be added to tag, we create it as null first and will change to notnull later.
        $table = new xmldb_table('tag');
        $field = new xmldb_field('tagcollid', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'userid');
        // Conditionally launch add field tagcloudid.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016011300.01);
    }
    if ($oldversion < 2016011300.02) {
        // Create a default tag collection if not exists and update the field tag.tagcollid to point to it.
        if (!($tcid = $DB->get_field_sql('SELECT id FROM {tag_coll} ORDER BY isdefault DESC, sortorder, id', null, IGNORE_MULTIPLE))) {
            $tcid = $DB->insert_record('tag_coll', array('isdefault' => 1, 'sortorder' => 0));
        }
        $DB->execute('UPDATE {tag} SET tagcollid = ? WHERE tagcollid IS NULL', array($tcid));
        // Define index tagcollname (unique) to be added to tag.
        $table = new xmldb_table('tag');
        $index = new xmldb_index('tagcollname', XMLDB_INDEX_UNIQUE, array('tagcollid', 'name'));
        $field = new xmldb_field('tagcollid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'userid');
        // Conditionally launch add index tagcollname.
        if (!$dbman->index_exists($table, $index)) {
            // Launch change of nullability for field tagcollid.
            $dbman->change_field_notnull($table, $field);
            $dbman->add_index($table, $index);
        }
        // Define key tagcollid (foreign) to be added to tag.
        $table = new xmldb_table('tag');
        $key = new xmldb_key('tagcollid', XMLDB_KEY_FOREIGN, array('tagcollid'), 'tag_coll', array('id'));
        // Launch add key tagcloudid.
        $dbman->add_key($table, $key);
        // Define index tagcolltype (not unique) to be added to tag.
        $table = new xmldb_table('tag');
        $index = new xmldb_index('tagcolltype', XMLDB_INDEX_NOTUNIQUE, array('tagcollid', 'tagtype'));
        // Conditionally launch add index tagcolltype.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016011300.02);
    }
    if ($oldversion < 2016011300.03) {
        // Define table tag_area to be created.
        $table = new xmldb_table('tag_area');
        // Adding fields to table tag_area.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('component', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null);
        $table->add_field('itemtype', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null);
        $table->add_field('enabled', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '1');
        $table->add_field('tagcollid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('callback', XMLDB_TYPE_CHAR, '100', null, null, null, null);
        $table->add_field('callbackfile', XMLDB_TYPE_CHAR, '100', null, null, null, null);
        // Adding keys to table tag_area.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('tagcollid', XMLDB_KEY_FOREIGN, array('tagcollid'), 'tag_coll', array('id'));
        // Adding indexes to table tag_area.
        $table->add_index('compitemtype', XMLDB_INDEX_UNIQUE, array('component', 'itemtype'));
        // Conditionally launch create table for tag_area.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016011300.03);
    }
    if ($oldversion < 2016011300.04) {
        // Define index itemtype-itemid-tagid-tiuserid (unique) to be dropped form tag_instance.
        $table = new xmldb_table('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, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016011300.04);
    }
    if ($oldversion < 2016011300.05) {
        $DB->execute("UPDATE {tag_instance} SET component = ? WHERE component IS NULL", array(''));
        // Changing nullability of field component on table tag_instance to not null.
        $table = new xmldb_table('tag_instance');
        $field = new xmldb_field('component', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null, 'tagid');
        // Launch change of nullability for field component.
        $dbman->change_field_notnull($table, $field);
        // Changing type of field itemtype on table tag_instance to char.
        $table = new xmldb_table('tag_instance');
        $field = new xmldb_field('itemtype', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null, 'component');
        // Launch change of type for field itemtype.
        $dbman->change_field_type($table, $field);
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016011300.05);
    }
    if ($oldversion < 2016011300.06) {
        // Define index taggeditem (unique) to be added to tag_instance.
        $table = new xmldb_table('tag_instance');
        $index = new xmldb_index('taggeditem', XMLDB_INDEX_UNIQUE, array('component', 'itemtype', 'itemid', 'tiuserid', 'tagid'));
        // Conditionally launch add index taggeditem.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016011300.06);
    }
    if ($oldversion < 2016011300.07) {
        // Define index taglookup (not unique) to be added to tag_instance.
        $table = new xmldb_table('tag_instance');
        $index = new xmldb_index('taglookup', XMLDB_INDEX_NOTUNIQUE, array('itemtype', 'component', 'tagid', 'contextid'));
        // Conditionally launch add index taglookup.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016011300.07);
    }
    if ($oldversion < 2016011301.0) {
        // Force uninstall of deleted tool.
        if (!file_exists("{$CFG->dirroot}/webservice/amf")) {
            // Remove capabilities.
            capabilities_cleanup('webservice_amf');
            // Remove all other associated config.
            unset_all_config_for_plugin('webservice_amf');
        }
        upgrade_main_savepoint(true, 2016011301.0);
    }
    if ($oldversion < 2016011901.0) {
        // Convert calendar_lookahead to nearest new value.
        $transaction = $DB->start_delegated_transaction();
        // Count all users who curretly have that preference set (for progress bar).
        $total = $DB->count_records_select('user_preferences', "name = 'calendar_lookahead' AND value != '0'");
        $pbar = new progress_bar('upgradecalendarlookahead', 500, true);
        // Get all these users, one at a time.
        $rs = $DB->get_recordset_select('user_preferences', "name = 'calendar_lookahead' AND value != '0'");
        $i = 0;
        foreach ($rs as $userpref) {
            // Calculate and set new lookahead value.
            if ($userpref->value > 90) {
                $newvalue = 120;
            } else {
                if ($userpref->value > 60 and $userpref->value < 90) {
                    $newvalue = 90;
                } else {
                    if ($userpref->value > 30 and $userpref->value < 60) {
                        $newvalue = 60;
                    } else {
                        if ($userpref->value > 21 and $userpref->value < 30) {
                            $newvalue = 30;
                        } else {
                            if ($userpref->value > 14 and $userpref->value < 21) {
                                $newvalue = 21;
                            } else {
                                if ($userpref->value > 7 and $userpref->value < 14) {
                                    $newvalue = 14;
                                } else {
                                    $newvalue = $userpref->value;
                                }
                            }
                        }
                    }
                }
            }
            $DB->set_field('user_preferences', 'value', $newvalue, array('id' => $userpref->id));
            // Update progress.
            $i++;
            $pbar->update($i, $total, "Upgrading user preference settings - {$i}/{$total}.");
        }
        $rs->close();
        $transaction->allow_commit();
        upgrade_main_savepoint(true, 2016011901.0);
    }
    if ($oldversion < 2016020200.0) {
        // Define field isstandard to be added to tag.
        $table = new xmldb_table('tag');
        $field = new xmldb_field('isstandard', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'rawname');
        // Conditionally launch add field isstandard.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Define index tagcolltype (not unique) to be dropped form tag.
        $index = new xmldb_index('tagcolltype', XMLDB_INDEX_NOTUNIQUE, array('tagcollid', 'tagtype'));
        // Conditionally launch drop index tagcolltype.
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Define index tagcolltype (not unique) to be added to tag.
        $index = new xmldb_index('tagcolltype', XMLDB_INDEX_NOTUNIQUE, array('tagcollid', 'isstandard'));
        // Conditionally launch add index tagcolltype.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Define field tagtype to be dropped from tag.
        $field = new xmldb_field('tagtype');
        // Conditionally launch drop field tagtype and update isstandard.
        if ($dbman->field_exists($table, $field)) {
            $DB->execute("UPDATE {tag} SET isstandard=(CASE WHEN (tagtype = ?) THEN 1 ELSE 0 END)", array('official'));
            $dbman->drop_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016020200.0);
    }
    if ($oldversion < 2016020201.0) {
        // Define field showstandard to be added to tag_area.
        $table = new xmldb_table('tag_area');
        $field = new xmldb_field('showstandard', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'callbackfile');
        // Conditionally launch add field showstandard.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // By default set user area to hide standard tags. 2 = core_tag_tag::HIDE_STANDARD (can not use constant here).
        $DB->execute("UPDATE {tag_area} SET showstandard = ? WHERE itemtype = ? AND component = ?", array(2, 'user', 'core'));
        // Changing precision of field enabled on table tag_area to (1).
        $table = new xmldb_table('tag_area');
        $field = new xmldb_field('enabled', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '1', 'itemtype');
        // Launch change of precision for field enabled.
        $dbman->change_field_precision($table, $field);
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016020201.0);
    }
    if ($oldversion < 2016021500.0) {
        $root = $CFG->tempdir . '/download';
        if (is_dir($root)) {
            // Fetch each repository type - include all repos, not just enabled.
            $repositories = $DB->get_records('repository', array(), '', 'type');
            foreach ($repositories as $id => $repository) {
                $directory = $root . '/repository_' . $repository->type;
                if (is_dir($directory)) {
                    fulldelete($directory);
                }
            }
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016021500.0);
    }
    if ($oldversion < 2016021501.0) {
        // This could take a long time. Unfortunately, no way to know how long, and no way to do progress, so setting for 1 hour.
        upgrade_set_timeout(3600);
        // Define index userid-itemid (not unique) to be added to grade_grades_history.
        $table = new xmldb_table('grade_grades_history');
        $index = new xmldb_index('userid-itemid-timemodified', XMLDB_INDEX_NOTUNIQUE, array('userid', 'itemid', 'timemodified'));
        // Conditionally launch add index userid-itemid.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016021501.0);
    }
    return true;
}
示例#2
0
 protected function process_module($data)
 {
     global $CFG, $DB;
     $data = (object) $data;
     $oldid = $data->id;
     $this->task->set_old_moduleversion($data->version);
     $data->course = $this->task->get_courseid();
     $data->module = $DB->get_field('modules', 'id', array('name' => $data->modulename));
     // Map section (first try by course_section mapping match. Useful in course and section restores)
     $data->section = $this->get_mappingid('course_section', $data->sectionid);
     if (!$data->section) {
         // mapping failed, try to get section by sectionnumber matching
         $params = array('course' => $this->get_courseid(), 'section' => $data->sectionnumber);
         $data->section = $DB->get_field('course_sections', 'id', $params);
     }
     if (!$data->section) {
         // sectionnumber failed, try to get first section in course
         $params = array('course' => $this->get_courseid());
         $data->section = $DB->get_field('course_sections', 'MIN(id)', $params);
     }
     if (!$data->section) {
         // no sections in course, create section 0 and 1 and assign module to 1
         $sectionrec = array('course' => $this->get_courseid(), 'section' => 0);
         $DB->insert_record('course_sections', $sectionrec);
         // section 0
         $sectionrec = array('course' => $this->get_courseid(), 'section' => 1);
         $data->section = $DB->insert_record('course_sections', $sectionrec);
         // section 1
     }
     $data->groupingid = $this->get_mappingid('grouping', $data->groupingid);
     // grouping
     if (!grade_verify_idnumber($data->idnumber, $this->get_courseid())) {
         // idnumber uniqueness
         $data->idnumber = '';
     }
     if (empty($CFG->enablecompletion)) {
         // completion
         $data->completion = 0;
         $data->completiongradeitemnumber = null;
         $data->completionview = 0;
         $data->completionexpected = 0;
     } else {
         $data->completionexpected = $this->apply_date_offset($data->completionexpected);
     }
     if (empty($CFG->enableavailability)) {
         $data->availability = null;
     }
     // Backups that did not include showdescription, set it to default 0
     // (this is not totally necessary as it has a db default, but just to
     // be explicit).
     if (!isset($data->showdescription)) {
         $data->showdescription = 0;
     }
     $data->instance = 0;
     // Set to 0 for now, going to create it soon (next step)
     if (empty($data->availability)) {
         // If there are legacy availablility data fields (and no new format data),
         // convert the old fields.
         $data->availability = \core_availability\info::convert_legacy_fields($data, false);
     } else {
         if (!empty($data->groupmembersonly)) {
             // There is current availability data, but it still has groupmembersonly
             // as well (2.7 backups), convert just that part.
             require_once $CFG->dirroot . '/lib/db/upgradelib.php';
             $data->availability = upgrade_group_members_only($data->groupingid, $data->availability);
         }
     }
     // course_module record ready, insert it
     $newitemid = $DB->insert_record('course_modules', $data);
     // save mapping
     $this->set_mapping('course_module', $oldid, $newitemid);
     // set the new course_module id in the task
     $this->task->set_moduleid($newitemid);
     // we can now create the context safely
     $ctxid = context_module::instance($newitemid)->id;
     // set the new context id in the task
     $this->task->set_contextid($ctxid);
     // update sequence field in course_section
     if ($sequence = $DB->get_field('course_sections', 'sequence', array('id' => $data->section))) {
         $sequence .= ',' . $newitemid;
     } else {
         $sequence = $newitemid;
     }
     $DB->set_field('course_sections', 'sequence', $sequence, array('id' => $data->section));
     // If there is the legacy showavailability data, store this for later use.
     // (This data is not present when restoring 'new' backups.)
     if (isset($data->showavailability)) {
         // Cache the showavailability flag using the backup_ids data field.
         restore_dbops::set_backup_ids_record($this->get_restoreid(), 'module_showavailability', $newitemid, 0, null, (object) array('showavailability' => $data->showavailability));
     }
 }
示例#3
0
/**
 * Main upgrade tasks to be executed on Moodle version bump
 *
 * This function is automatically executed after one bump in the Moodle core
 * version is detected. It's in charge of performing the required tasks
 * to raise core from the previous version to the next one.
 *
 * It's a collection of ordered blocks of code, named "upgrade steps",
 * each one performing one isolated (from the rest of steps) task. Usually
 * tasks involve creating new DB objects or performing manipulation of the
 * information for cleanup/fixup purposes.
 *
 * Each upgrade step has a fixed structure, that can be summarised as follows:
 *
 * if ($oldversion < XXXXXXXXXX.XX) {
 *     // Explanation of the update step, linking to issue in the Tracker if necessary
 *     upgrade_set_timeout(XX); // Optional for big tasks
 *     // Code to execute goes here, usually the XMLDB Editor will
 *     // help you here. See {@link http://docs.moodle.org/dev/XMLDB_editor}.
 *     upgrade_main_savepoint(true, XXXXXXXXXX.XX);
 * }
 *
 * All plugins within Moodle (modules, blocks, reports...) support the existence of
 * their own upgrade.php file, using the "Frankenstyle" component name as
 * defined at {@link http://docs.moodle.org/dev/Frankenstyle}, for example:
 *     - {@link xmldb_page_upgrade($oldversion)}. (modules don't require the plugintype ("mod_") to be used.
 *     - {@link xmldb_auth_manual_upgrade($oldversion)}.
 *     - {@link xmldb_workshopform_accumulative_upgrade($oldversion)}.
 *     - ....
 *
 * In order to keep the contents of this file reduced, it's allowed to create some helper
 * functions to be used here in the {@link upgradelib.php} file at the same directory. Note
 * that such a file must be manually included from upgrade.php, and there are some restrictions
 * about what can be used within it.
 *
 * For more information, take a look to the documentation available:
 *     - Data definition API: {@link http://docs.moodle.org/dev/Data_definition_API}
 *     - Upgrade API: {@link http://docs.moodle.org/dev/Upgrade_API}
 *
 * @param int $oldversion
 * @return bool always true
 */
function xmldb_main_upgrade($oldversion)
{
    global $CFG, $DB;
    require_once $CFG->libdir . '/db/upgradelib.php';
    // Core Upgrade-related functions.
    $dbman = $DB->get_manager();
    // Loads ddl manager and xmldb classes.
    // Always keep this upgrade step with version being the minimum
    // allowed version to upgrade from (v2.7.0 right now).
    if ($oldversion < 2014051200) {
        // Just in case somebody hacks upgrade scripts or env, we really can not continue.
        echo "You need to upgrade to 2.7.x or higher first!\n";
        exit(1);
        // Note this savepoint is 100% unreachable, but needed to pass the upgrade checks.
        upgrade_main_savepoint(true, 2014051200);
    }
    // MDL-32543 Make sure that the log table has correct length for action and url fields.
    if ($oldversion < 2014051200.02) {
        $table = new xmldb_table('log');
        $columns = $DB->get_columns('log');
        if ($columns['action']->max_length < 40) {
            $index1 = new xmldb_index('course-module-action', XMLDB_INDEX_NOTUNIQUE, array('course', 'module', 'action'));
            if ($dbman->index_exists($table, $index1)) {
                $dbman->drop_index($table, $index1);
            }
            $index2 = new xmldb_index('action', XMLDB_INDEX_NOTUNIQUE, array('action'));
            if ($dbman->index_exists($table, $index2)) {
                $dbman->drop_index($table, $index2);
            }
            $field = new xmldb_field('action', XMLDB_TYPE_CHAR, '40', null, XMLDB_NOTNULL, null, null, 'cmid');
            $dbman->change_field_precision($table, $field);
            $dbman->add_index($table, $index1);
            $dbman->add_index($table, $index2);
        }
        if ($columns['url']->max_length < 100) {
            $field = new xmldb_field('url', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null, 'action');
            $dbman->change_field_precision($table, $field);
        }
        upgrade_main_savepoint(true, 2014051200.02);
    }
    if ($oldversion < 2014060300.0) {
        $gspath = get_config('assignfeedback_editpdf', 'gspath');
        if ($gspath !== false) {
            set_config('pathtogs', $gspath);
            unset_config('gspath', 'assignfeedback_editpdf');
        }
        upgrade_main_savepoint(true, 2014060300.0);
    }
    if ($oldversion < 2014061000.0) {
        // Fixing possible wrong MIME type for Publisher files.
        $filetypes = array('%.pub' => 'application/x-mspublisher');
        upgrade_mimetypes($filetypes);
        upgrade_main_savepoint(true, 2014061000.0);
    }
    if ($oldversion < 2014062600.01) {
        // We only want to delete DragMath if the directory no longer exists. If the directory
        // is present then it means it has been restored, so do not perform the uninstall.
        if (!check_dir_exists($CFG->libdir . '/editor/tinymce/plugins/dragmath', false)) {
            // Purge DragMath plugin which is incompatible with GNU GPL license.
            unset_all_config_for_plugin('tinymce_dragmath');
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014062600.01);
    }
    // Switch the order of the fields in the files_reference index, to improve the performance of search_references.
    if ($oldversion < 2014070100.0) {
        $table = new xmldb_table('files_reference');
        $index = new xmldb_index('uq_external_file', XMLDB_INDEX_UNIQUE, array('repositoryid', 'referencehash'));
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        upgrade_main_savepoint(true, 2014070100.0);
    }
    if ($oldversion < 2014070101.0) {
        $table = new xmldb_table('files_reference');
        $index = new xmldb_index('uq_external_file', XMLDB_INDEX_UNIQUE, array('referencehash', 'repositoryid'));
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        upgrade_main_savepoint(true, 2014070101.0);
    }
    if ($oldversion < 2014072400.01) {
        $table = new xmldb_table('user_devices');
        $oldindex = new xmldb_index('pushid-platform', XMLDB_KEY_UNIQUE, array('pushid', 'platform'));
        if ($dbman->index_exists($table, $oldindex)) {
            $key = new xmldb_key('pushid-platform', XMLDB_KEY_UNIQUE, array('pushid', 'platform'));
            $dbman->drop_key($table, $key);
        }
        upgrade_main_savepoint(true, 2014072400.01);
    }
    if ($oldversion < 2014080801.0) {
        // Define index behaviour (not unique) to be added to question_attempts.
        $table = new xmldb_table('question_attempts');
        $index = new xmldb_index('behaviour', XMLDB_INDEX_NOTUNIQUE, array('behaviour'));
        // Conditionally launch add index behaviour.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014080801.0);
    }
    if ($oldversion < 2014082900.01) {
        // Fixing possible wrong MIME type for 7-zip and Rar files.
        $filetypes = array('%.7z' => 'application/x-7z-compressed', '%.rar' => 'application/x-rar-compressed');
        upgrade_mimetypes($filetypes);
        upgrade_main_savepoint(true, 2014082900.01);
    }
    if ($oldversion < 2014082900.02) {
        // Replace groupmembersonly usage with new availability system.
        $transaction = $DB->start_delegated_transaction();
        if ($CFG->enablegroupmembersonly) {
            // If it isn't already enabled, we need to enable availability.
            if (!$CFG->enableavailability) {
                set_config('enableavailability', 1);
            }
            // Count all course-modules with groupmembersonly set (for progress
            // bar).
            $total = $DB->count_records('course_modules', array('groupmembersonly' => 1));
            $pbar = new progress_bar('upgradegroupmembersonly', 500, true);
            // Get all these course-modules, one at a time.
            $rs = $DB->get_recordset('course_modules', array('groupmembersonly' => 1), 'course, id');
            $i = 0;
            foreach ($rs as $cm) {
                // Calculate and set new availability value.
                $availability = upgrade_group_members_only($cm->groupingid, $cm->availability);
                $DB->set_field('course_modules', 'availability', $availability, array('id' => $cm->id));
                // Update progress.
                $i++;
                $pbar->update($i, $total, "Upgrading groupmembersonly settings - {$i}/{$total}.");
            }
            $rs->close();
        }
        // Define field groupmembersonly to be dropped from course_modules.
        $table = new xmldb_table('course_modules');
        $field = new xmldb_field('groupmembersonly');
        // Conditionally launch drop field groupmembersonly.
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Unset old config variable.
        unset_config('enablegroupmembersonly');
        $transaction->allow_commit();
        upgrade_main_savepoint(true, 2014082900.02);
    }
    if ($oldversion < 2014100100.0) {
        // Define table messageinbound_handlers to be created.
        $table = new xmldb_table('messageinbound_handlers');
        // Adding fields to table messageinbound_handlers.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('component', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null);
        $table->add_field('classname', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('defaultexpiration', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '86400');
        $table->add_field('validateaddress', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '1');
        $table->add_field('enabled', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0');
        // Adding keys to table messageinbound_handlers.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('classname', XMLDB_KEY_UNIQUE, array('classname'));
        // Conditionally launch create table for messageinbound_handlers.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Define table messageinbound_datakeys to be created.
        $table = new xmldb_table('messageinbound_datakeys');
        // Adding fields to table messageinbound_datakeys.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('handler', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('datavalue', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('datakey', XMLDB_TYPE_CHAR, '64', null, null, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('expires', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        // Adding keys to table messageinbound_datakeys.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('handler_datavalue', XMLDB_KEY_UNIQUE, array('handler', 'datavalue'));
        $table->add_key('handler', XMLDB_KEY_FOREIGN, array('handler'), 'messageinbound_handlers', array('id'));
        // Conditionally launch create table for messageinbound_datakeys.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100100.0);
    }
    if ($oldversion < 2014100600.01) {
        // Define field aggregationstatus to be added to grade_grades.
        $table = new xmldb_table('grade_grades');
        $field = new xmldb_field('aggregationstatus', XMLDB_TYPE_CHAR, '10', null, XMLDB_NOTNULL, null, 'unknown', 'timemodified');
        // Conditionally launch add field aggregationstatus.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('aggregationweight', XMLDB_TYPE_NUMBER, '10, 5', null, null, null, null, 'aggregationstatus');
        // Conditionally launch add field aggregationweight.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Define field aggregationcoef2 to be added to grade_items.
        $table = new xmldb_table('grade_items');
        $field = new xmldb_field('aggregationcoef2', XMLDB_TYPE_NUMBER, '10, 5', null, XMLDB_NOTNULL, null, '0', 'aggregationcoef');
        // Conditionally launch add field aggregationcoef2.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('weightoverride', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'needsupdate');
        // Conditionally launch add field weightoverride.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100600.01);
    }
    if ($oldversion < 2014100600.02) {
        // Define field aggregationcoef2 to be added to grade_items_history.
        $table = new xmldb_table('grade_items_history');
        $field = new xmldb_field('aggregationcoef2', XMLDB_TYPE_NUMBER, '10, 5', null, XMLDB_NOTNULL, null, '0', 'aggregationcoef');
        // Conditionally launch add field aggregationcoef2.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100600.02);
    }
    if ($oldversion < 2014100600.03) {
        // Define field weightoverride to be added to grade_items_history.
        $table = new xmldb_table('grade_items_history');
        $field = new xmldb_field('weightoverride', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'decimals');
        // Conditionally launch add field weightoverride.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100600.03);
    }
    if ($oldversion < 2014100600.04) {
        // Set flags so we can display a notice on all courses that might
        // be affected by the uprade to natural aggregation.
        if (!get_config('grades_sumofgrades_upgrade_flagged', 'core')) {
            // 13 == SUM_OF_GRADES.
            $sql = 'SELECT DISTINCT courseid
                      FROM {grade_categories}
                     WHERE aggregation = ?';
            $courses = $DB->get_records_sql($sql, array(13));
            foreach ($courses as $course) {
                set_config('show_sumofgrades_upgrade_' . $course->courseid, 1);
                // Set each of the grade items to needing an update so that when the user visits the grade reports the
                // figures will be updated.
                $DB->set_field('grade_items', 'needsupdate', 1, array('courseid' => $course->courseid));
            }
            set_config('grades_sumofgrades_upgrade_flagged', 1);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100600.04);
    }
    if ($oldversion < 2014100700.0) {
        // Define table messageinbound_messagelist to be created.
        $table = new xmldb_table('messageinbound_messagelist');
        // Adding fields to table messageinbound_messagelist.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('messageid', XMLDB_TYPE_TEXT, null, null, XMLDB_NOTNULL, null, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('address', XMLDB_TYPE_TEXT, null, null, XMLDB_NOTNULL, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table messageinbound_messagelist.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        // Conditionally launch create table for messageinbound_messagelist.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100700.0);
    }
    if ($oldversion < 2014100700.01) {
        // Define field visible to be added to cohort.
        $table = new xmldb_table('cohort');
        $field = new xmldb_field('visible', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '1', 'descriptionformat');
        // Conditionally launch add field visible.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100700.01);
    }
    if ($oldversion < 2014100800.0) {
        // Remove qformat_learnwise (unless it has manually been added back).
        if (!file_exists($CFG->dirroot . '/question/format/learnwise/format.php')) {
            unset_all_config_for_plugin('qformat_learnwise');
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100800.0);
    }
    if ($oldversion < 2014101001.0) {
        // Some blocks added themselves to the my/ home page, but they did not declare the
        // subpage of the default my home page. While the upgrade script has been fixed, this
        // upgrade script will fix the data that was wrongly added.
        // We only proceed if we can find the right entry from my_pages. Private => 1 refers to
        // the constant value MY_PAGE_PRIVATE.
        if ($systempage = $DB->get_record('my_pages', array('userid' => null, 'private' => 1))) {
            // Select the blocks there could have been automatically added. showinsubcontexts is hardcoded to 0
            // because it is possible for administrators to have forced it on the my/ page by adding it to the
            // system directly rather than updating the default my/ page.
            $blocks = array('course_overview', 'private_files', 'online_users', 'badges', 'calendar_month', 'calendar_upcoming');
            list($blocksql, $blockparams) = $DB->get_in_or_equal($blocks, SQL_PARAMS_NAMED);
            $select = "parentcontextid = :contextid\n                    AND pagetypepattern = :page\n                    AND showinsubcontexts = 0\n                    AND subpagepattern IS NULL\n                    AND blockname {$blocksql}";
            $params = array('contextid' => context_system::instance()->id, 'page' => 'my-index');
            $params = array_merge($params, $blockparams);
            $DB->set_field_select('block_instances', 'subpagepattern', $systempage->id, $select, $params);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014101001.0);
    }
    if ($oldversion < 2014102000.0) {
        // Define field aggregatesubcats to be dropped from grade_categories.
        $table = new xmldb_table('grade_categories');
        $field = new xmldb_field('aggregatesubcats');
        // Conditionally launch drop field aggregatesubcats.
        if ($dbman->field_exists($table, $field)) {
            $sql = 'SELECT DISTINCT courseid
                      FROM {grade_categories}
                     WHERE aggregatesubcats = ?';
            $courses = $DB->get_records_sql($sql, array(1));
            foreach ($courses as $course) {
                set_config('show_aggregatesubcats_upgrade_' . $course->courseid, 1);
                // Set each of the grade items to needing an update so that when the user visits the grade reports the
                // figures will be updated.
                $DB->set_field('grade_items', 'needsupdate', 1, array('courseid' => $course->courseid));
            }
            $dbman->drop_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014102000.0);
    }
    if ($oldversion < 2014110300.0) {
        // Run script restoring missing folder records for draft file areas.
        upgrade_fix_missing_root_folders_draft();
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014110300.0);
    }
    // Moodle v2.8.0 release upgrade line.
    // Put any upgrade step following this.
    if ($oldversion < 2014111000.0) {
        // Coming from 2.7 or older, we need to flag the step minmaxgrade to be ignored.
        set_config('upgrade_minmaxgradestepignored', 1);
        // Coming from 2.7 or older, we need to flag the step for changing calculated grades to be regraded.
        set_config('upgrade_calculatedgradeitemsonlyregrade', 1);
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014111000.0);
    }
    if ($oldversion < 2014120100.0) {
        // Define field sslverification to be added to mnet_host.
        $table = new xmldb_table('mnet_host');
        $field = new xmldb_field('sslverification', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'applicationid');
        // Conditionally launch add field sslverification.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014120100.0);
    }
    if ($oldversion < 2014120101.0) {
        // Define field component to be added to comments.
        $table = new xmldb_table('comments');
        $field = new xmldb_field('component', XMLDB_TYPE_CHAR, '255', null, null, null, null, 'contextid');
        // Conditionally launch add field component.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014120101.0);
    }
    if ($oldversion < 2014120102.0) {
        // Define table user_password_history to be created.
        $table = new xmldb_table('user_password_history');
        // Adding fields to table user_password_history.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('hash', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table user_password_history.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        // Conditionally launch create table for user_password_history.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014120102.0);
    }
    if ($oldversion < 2015010800.01) {
        // Make sure the private files handler is not set to expire.
        $DB->set_field('messageinbound_handlers', 'defaultexpiration', 0, array('classname' => '\\core\\message\\inbound\\private_files_handler'));
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015010800.01);
    }
    if ($oldversion < 2015012600.0) {
        // If the site is using internal and external storage, or just external
        // storage, and the external path specified is empty we change the setting
        // to internal only. That is how the backup code is handling this
        // misconfiguration.
        $storage = (int) get_config('backup', 'backup_auto_storage');
        $folder = get_config('backup', 'backup_auto_destination');
        if ($storage !== 0 && empty($folder)) {
            set_config('backup_auto_storage', 0, 'backup');
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015012600.0);
    }
    if ($oldversion < 2015012600.01) {
        // Convert calendar_lookahead to nearest new value.
        $value = $DB->get_field('config', 'value', array('name' => 'calendar_lookahead'));
        if ($value > 90) {
            set_config('calendar_lookahead', '120');
        } else {
            if ($value > 60 and $value < 90) {
                set_config('calendar_lookahead', '90');
            } else {
                if ($value > 30 and $value < 60) {
                    set_config('calendar_lookahead', '60');
                } else {
                    if ($value > 21 and $value < 30) {
                        set_config('calendar_lookahead', '30');
                    } else {
                        if ($value > 14 and $value < 21) {
                            set_config('calendar_lookahead', '21');
                        } else {
                            if ($value > 7 and $value < 14) {
                                set_config('calendar_lookahead', '14');
                            }
                        }
                    }
                }
            }
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015012600.01);
    }
    if ($oldversion < 2015021100.0) {
        // Define field timemodified to be added to registration_hubs.
        $table = new xmldb_table('registration_hubs');
        $field = new xmldb_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'secret');
        // Conditionally launch add field timemodified.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015021100.0);
    }
    if ($oldversion < 2015022401.0) {
        // Define index useridfromto (not unique) to be added to message.
        $table = new xmldb_table('message');
        $index = new xmldb_index('useridfromto', XMLDB_INDEX_NOTUNIQUE, array('useridfrom', 'useridto'));
        // Conditionally launch add index useridfromto.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Define index useridfromto (not unique) to be added to message_read.
        $table = new xmldb_table('message_read');
        $index = new xmldb_index('useridfromto', XMLDB_INDEX_NOTUNIQUE, array('useridfrom', 'useridto'));
        // Conditionally launch add index useridfromto.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015022401.0);
    }
    if ($oldversion < 2015022500.0) {
        $table = new xmldb_table('user_devices');
        $index = new xmldb_index('uuid-userid', XMLDB_INDEX_NOTUNIQUE, array('uuid', 'userid'));
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        upgrade_main_savepoint(true, 2015022500.0);
    }
    if ($oldversion < 2015030400.0) {
        // We have long since switched to storing timemodified per hub rather than a single 'registered' timestamp.
        unset_config('registered');
        upgrade_main_savepoint(true, 2015030400.0);
    }
    if ($oldversion < 2015031100.0) {
        // Unset old config variable.
        unset_config('enabletgzbackups');
        upgrade_main_savepoint(true, 2015031100.0);
    }
    if ($oldversion < 2015031400.0) {
        // Define index useridfrom (not unique) to be dropped form message.
        $table = new xmldb_table('message');
        $index = new xmldb_index('useridfrom', XMLDB_INDEX_NOTUNIQUE, array('useridfrom'));
        // Conditionally launch drop index useridfrom.
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Define index useridfrom (not unique) to be dropped form message_read.
        $table = new xmldb_table('message_read');
        $index = new xmldb_index('useridfrom', XMLDB_INDEX_NOTUNIQUE, array('useridfrom'));
        // Conditionally launch drop index useridfrom.
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015031400.0);
    }
    if ($oldversion < 2015031900.01) {
        unset_config('crontime', 'registration');
        upgrade_main_savepoint(true, 2015031900.01);
    }
    if ($oldversion < 2015032000.0) {
        $table = new xmldb_table('badge_criteria');
        $field = new xmldb_field('description', XMLDB_TYPE_TEXT, null, null, null, null, null);
        // Conditionally add description field to the badge_criteria table.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('descriptionformat', XMLDB_TYPE_INTEGER, 2, null, XMLDB_NOTNULL, null, 0);
        // Conditionally add description format field to the badge_criteria table.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        upgrade_main_savepoint(true, 2015032000.0);
    }
    if ($oldversion < 2015040200.01) {
        // Force uninstall of deleted tool.
        if (!file_exists("{$CFG->dirroot}/{$CFG->admin}/tool/timezoneimport")) {
            // Remove capabilities.
            capabilities_cleanup('tool_timezoneimport');
            // Remove all other associated config.
            unset_all_config_for_plugin('tool_timezoneimport');
        }
        upgrade_main_savepoint(true, 2015040200.01);
    }
    if ($oldversion < 2015040200.02) {
        // Define table timezone to be dropped.
        $table = new xmldb_table('timezone');
        // Conditionally launch drop table for timezone.
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        upgrade_main_savepoint(true, 2015040200.02);
    }
    if ($oldversion < 2015040200.03) {
        if (isset($CFG->timezone) and $CFG->timezone == 99) {
            // Migrate to real server timezone.
            unset_config('timezone');
        }
        upgrade_main_savepoint(true, 2015040200.03);
    }
    if ($oldversion < 2015040700.01) {
        $DB->delete_records('config_plugins', array('name' => 'requiremodintro'));
        upgrade_main_savepoint(true, 2015040700.01);
    }
    if ($oldversion < 2015040900.01) {
        // Add "My grades" to the user menu.
        $oldconfig = get_config('core', 'customusermenuitems');
        if (strpos("mygrades,grades|/grade/report/mygrades.php|grades", $oldconfig) === false) {
            $newconfig = "mygrades,grades|/grade/report/mygrades.php|grades\n" . $oldconfig;
            set_config('customusermenuitems', $newconfig);
        }
        upgrade_main_savepoint(true, 2015040900.01);
    }
    if ($oldversion < 2015040900.02) {
        // Update the default user menu (add preferences, remove my files and my badges).
        $oldconfig = get_config('core', 'customusermenuitems');
        // Add "My preferences" at the end.
        if (strpos($oldconfig, "mypreferences,moodle|/user/preference.php|preferences") === false) {
            $newconfig = $oldconfig . "\nmypreferences,moodle|/user/preferences.php|preferences";
        } else {
            $newconfig = $oldconfig;
        }
        // Remove my files.
        $newconfig = str_replace("myfiles,moodle|/user/files.php|download", "", $newconfig);
        // Remove my badges.
        $newconfig = str_replace("mybadges,badges|/badges/mybadges.php|award", "", $newconfig);
        // Remove holes.
        $newconfig = preg_replace('/\\n+/', "\n", $newconfig);
        $newconfig = preg_replace('/(\\r\\n)+/', "\n", $newconfig);
        set_config('customusermenuitems', $newconfig);
        upgrade_main_savepoint(true, 2015040900.02);
    }
    if ($oldversion < 2015050400.0) {
        $config = get_config('core', 'customusermenuitems');
        // Change "My preferences" in the user menu to "Preferences".
        $config = str_replace("mypreferences,moodle|/user/preferences.php|preferences", "preferences,moodle|/user/preferences.php|preferences", $config);
        // Change "My grades" in the user menu to "Grades".
        $config = str_replace("mygrades,grades|/grade/report/mygrades.php|grades", "grades,grades|/grade/report/mygrades.php|grades", $config);
        set_config('customusermenuitems', $config);
        upgrade_main_savepoint(true, 2015050400.0);
    }
    if ($oldversion < 2015050401.0) {
        // Make sure we have messages in the user menu because it's no longer in the nav tree.
        $oldconfig = get_config('core', 'customusermenuitems');
        $messagesconfig = "messages,message|/message/index.php|message";
        $preferencesconfig = "preferences,moodle|/user/preferences.php|preferences";
        // See if it exists.
        if (strpos($oldconfig, $messagesconfig) === false) {
            // See if preferences exists.
            if (strpos($oldconfig, "preferences,moodle|/user/preferences.php|preferences") !== false) {
                // Insert it before preferences.
                $newconfig = str_replace($preferencesconfig, $messagesconfig . "\n" . $preferencesconfig, $oldconfig);
            } else {
                // Custom config - we can only insert it at the end.
                $newconfig = $oldconfig . "\n" . $messagesconfig;
            }
            set_config('customusermenuitems', $newconfig);
        }
        upgrade_main_savepoint(true, 2015050401.0);
    }
    // Moodle v2.9.0 release upgrade line.
    // Put any upgrade step following this.
    if ($oldversion < 2015060400.02) {
        // Sites that were upgrading from 2.7 and older will ignore this step.
        if (empty($CFG->upgrade_minmaxgradestepignored)) {
            upgrade_minmaxgrade();
            // Flags this upgrade step as already run to prevent it from running multiple times.
            set_config('upgrade_minmaxgradestepignored', 1);
        }
        upgrade_main_savepoint(true, 2015060400.02);
    }
    if ($oldversion < 2015061900.0) {
        // MDL-49257. Changed the algorithm of calculating automatic weights of extra credit items.
        // Before the change, in case when grade category (in "Natural" agg. method) had items with
        // overridden weights, the automatic weight of extra credit items was illogical.
        // In order to prevent grades changes after the upgrade we need to freeze gradebook calculation
        // for the affected courses.
        // This script in included in each major version upgrade process so make sure we don't run it twice.
        if (empty($CFG->upgrade_extracreditweightsstepignored)) {
            upgrade_extra_credit_weightoverride();
            // To skip running the same script on the upgrade to the next major release.
            set_config('upgrade_extracreditweightsstepignored', 1);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015061900.0);
    }
    if ($oldversion < 2015062500.01) {
        // MDL-48239. Changed calculated grade items so that the maximum and minimum grade can be set.
        // If the changes are accepted and a regrade is done on the gradebook then some grades may change significantly.
        // This is here to freeze the gradebook in affected courses.
        // This script is included in each major version upgrade process so make sure we don't run it twice.
        if (empty($CFG->upgrade_calculatedgradeitemsignored)) {
            upgrade_calculated_grade_items();
            // To skip running the same script on the upgrade to the next major release.
            set_config('upgrade_calculatedgradeitemsignored', 1);
            // This config value is never used again.
            unset_config('upgrade_calculatedgradeitemsonlyregrade');
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015062500.01);
    }
    if ($oldversion < 2015081300.01) {
        // Define field importtype to be added to grade_import_values.
        $table = new xmldb_table('grade_import_values');
        $field = new xmldb_field('importonlyfeedback', XMLDB_TYPE_INTEGER, '1', null, null, null, '0', 'importer');
        // Conditionally launch add field importtype.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015081300.01);
    }
    if ($oldversion < 2015082400.0) {
        // Define table webdav_locks to be dropped.
        $table = new xmldb_table('webdav_locks');
        // Conditionally launch drop table for webdav_locks.
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015082400.0);
    }
    if ($oldversion < 2015090200.0) {
        $table = new xmldb_table('message');
        // Define the deleted fields to be added to the message tables.
        $field1 = new xmldb_field('timeuserfromdeleted', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'timecreated');
        $field2 = new xmldb_field('timeusertodeleted', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'timecreated');
        $oldindex = new xmldb_index('useridfromto', XMLDB_INDEX_NOTUNIQUE, array('useridfrom', 'useridto'));
        $newindex = new xmldb_index('useridfromtodeleted', XMLDB_INDEX_NOTUNIQUE, array('useridfrom', 'useridto', 'timeuserfromdeleted', 'timeusertodeleted'));
        // Conditionally launch add field timeuserfromdeleted.
        if (!$dbman->field_exists($table, $field1)) {
            $dbman->add_field($table, $field1);
        }
        // Conditionally launch add field timeusertodeleted.
        if (!$dbman->field_exists($table, $field2)) {
            $dbman->add_field($table, $field2);
        }
        // Conditionally launch drop index useridfromto.
        if ($dbman->index_exists($table, $oldindex)) {
            $dbman->drop_index($table, $oldindex);
        }
        // Conditionally launch add index useridfromtodeleted.
        if (!$dbman->index_exists($table, $newindex)) {
            $dbman->add_index($table, $newindex);
        }
        // Now add them to the message_read table.
        $table = new xmldb_table('message_read');
        // Conditionally launch add field timeuserfromdeleted.
        if (!$dbman->field_exists($table, $field1)) {
            $dbman->add_field($table, $field1);
        }
        // Conditionally launch add field timeusertodeleted.
        if (!$dbman->field_exists($table, $field2)) {
            $dbman->add_field($table, $field2);
        }
        // Conditionally launch drop index useridfromto.
        if ($dbman->index_exists($table, $oldindex)) {
            $dbman->drop_index($table, $oldindex);
        }
        // Conditionally launch add index useridfromtodeleted.
        if (!$dbman->index_exists($table, $newindex)) {
            $dbman->add_index($table, $newindex);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015090200.0);
    }
    if ($oldversion < 2015090801.0) {
        // This upgrade script merges all tag instances pointing to the same course tag.
        // User id is no longer used for those tag instances.
        upgrade_course_tags();
        // If configuration variable "Show course tags" is set, disable the block
        // 'tags' because it can not be used for tagging courses any more.
        if (!empty($CFG->block_tags_showcoursetags)) {
            if ($record = $DB->get_record('block', array('name' => 'tags'), 'id, visible')) {
                if ($record->visible) {
                    $DB->update_record('block', array('id' => $record->id, 'visible' => 0));
                }
            }
        }
        // Define index idname (unique) to be dropped form tag (it's really weird).
        $table = new xmldb_table('tag');
        $index = new xmldb_index('idname', XMLDB_INDEX_UNIQUE, array('id', 'name'));
        // Conditionally launch drop index idname.
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015090801.0);
    }
    if ($oldversion < 2015092200.0) {
        // Define index qtype (not unique) to be added to question.
        $table = new xmldb_table('question');
        $index = new xmldb_index('qtype', XMLDB_INDEX_NOTUNIQUE, array('qtype'));
        // Conditionally launch add index qtype.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015092200.0);
    }
    if ($oldversion < 2015092900.0) {
        // Rename backup_auto_keep setting to backup_auto_max_kept.
        $keep = get_config('backup', 'backup_auto_keep');
        if ($keep !== false) {
            set_config('backup_auto_max_kept', $keep, 'backup');
            unset_config('backup_auto_keep', 'backup');
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015092900.0);
    }
    if ($oldversion < 2015100600.0) {
        // Define index notification (not unique) to be added to message_read.
        $table = new xmldb_table('message_read');
        $index = new xmldb_index('notificationtimeread', XMLDB_INDEX_NOTUNIQUE, array('notification', 'timeread'));
        // Conditionally launch add index notification.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2015100600.0);
    }
    if ($oldversion < 2015100800.01) {
        // The only flag for preventing all plugins installation features is
        // now $CFG->disableupdateautodeploy in config.php.
        unset_config('updateautodeploy');
        upgrade_main_savepoint(true, 2015100800.01);
    }
    // Moodle v3.0.0 release upgrade line.
    // Put any upgrade step following this.
    if ($oldversion < 2016011300.01) {
        // This is a big upgrade script. We create new table tag_coll and the field
        // tag.tagcollid pointing to it.
        // Define table tag_coll to be created.
        $table = new xmldb_table('tag_coll');
        // Adding fields to table tagcloud.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('name', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        $table->add_field('isdefault', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('component', XMLDB_TYPE_CHAR, '100', null, null, null, null);
        $table->add_field('sortorder', XMLDB_TYPE_INTEGER, '5', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('searchable', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '1');
        $table->add_field('customurl', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        // Adding keys to table tagcloud.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Conditionally launch create table for tagcloud.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Table {tag}.
        // Define index name (unique) to be dropped form tag - we will replace it with index on (tagcollid,name) later.
        $table = new xmldb_table('tag');
        $index = new xmldb_index('name', XMLDB_INDEX_UNIQUE, array('name'));
        // Conditionally launch drop index name.
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Define field tagcollid to be added to tag, we create it as null first and will change to notnull later.
        $table = new xmldb_table('tag');
        $field = new xmldb_field('tagcollid', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'userid');
        // Conditionally launch add field tagcloudid.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016011300.01);
    }
    if ($oldversion < 2016011300.02) {
        // Create a default tag collection if not exists and update the field tag.tagcollid to point to it.
        if (!($tcid = $DB->get_field_sql('SELECT id FROM {tag_coll} ORDER BY isdefault DESC, sortorder, id', null, IGNORE_MULTIPLE))) {
            $tcid = $DB->insert_record('tag_coll', array('isdefault' => 1, 'sortorder' => 0));
        }
        $DB->execute('UPDATE {tag} SET tagcollid = ? WHERE tagcollid IS NULL', array($tcid));
        // Define index tagcollname (unique) to be added to tag.
        $table = new xmldb_table('tag');
        $index = new xmldb_index('tagcollname', XMLDB_INDEX_UNIQUE, array('tagcollid', 'name'));
        $field = new xmldb_field('tagcollid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'userid');
        // Conditionally launch add index tagcollname.
        if (!$dbman->index_exists($table, $index)) {
            // Launch change of nullability for field tagcollid.
            $dbman->change_field_notnull($table, $field);
            $dbman->add_index($table, $index);
        }
        // Define key tagcollid (foreign) to be added to tag.
        $table = new xmldb_table('tag');
        $key = new xmldb_key('tagcollid', XMLDB_KEY_FOREIGN, array('tagcollid'), 'tag_coll', array('id'));
        // Launch add key tagcloudid.
        $dbman->add_key($table, $key);
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016011300.02);
    }
    if ($oldversion < 2016011300.03) {
        // Define table tag_area to be created.
        $table = new xmldb_table('tag_area');
        // Adding fields to table tag_area.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('component', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null);
        $table->add_field('itemtype', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null);
        $table->add_field('enabled', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '1');
        $table->add_field('tagcollid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('callback', XMLDB_TYPE_CHAR, '100', null, null, null, null);
        $table->add_field('callbackfile', XMLDB_TYPE_CHAR, '100', null, null, null, null);
        // Adding keys to table tag_area.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('tagcollid', XMLDB_KEY_FOREIGN, array('tagcollid'), 'tag_coll', array('id'));
        // Adding indexes to table tag_area.
        $table->add_index('compitemtype', XMLDB_INDEX_UNIQUE, array('component', 'itemtype'));
        // Conditionally launch create table for tag_area.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016011300.03);
    }
    if ($oldversion < 2016011300.04) {
        // Define index itemtype-itemid-tagid-tiuserid (unique) to be dropped form tag_instance.
        $table = new xmldb_table('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, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016011300.04);
    }
    if ($oldversion < 2016011300.05) {
        $DB->execute("UPDATE {tag_instance} SET component = ? WHERE component IS NULL", array(''));
        // Changing nullability of field component on table tag_instance to not null.
        $table = new xmldb_table('tag_instance');
        $field = new xmldb_field('component', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null, 'tagid');
        // Launch change of nullability for field component.
        $dbman->change_field_notnull($table, $field);
        // Changing type of field itemtype on table tag_instance to char.
        $table = new xmldb_table('tag_instance');
        $field = new xmldb_field('itemtype', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null, 'component');
        // Launch change of type for field itemtype.
        $dbman->change_field_type($table, $field);
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016011300.05);
    }
    if ($oldversion < 2016011300.06) {
        // Define index taggeditem (unique) to be added to tag_instance.
        $table = new xmldb_table('tag_instance');
        $index = new xmldb_index('taggeditem', XMLDB_INDEX_UNIQUE, array('component', 'itemtype', 'itemid', 'tiuserid', 'tagid'));
        // Conditionally launch add index taggeditem.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016011300.06);
    }
    if ($oldversion < 2016011300.07) {
        // Define index taglookup (not unique) to be added to tag_instance.
        $table = new xmldb_table('tag_instance');
        $index = new xmldb_index('taglookup', XMLDB_INDEX_NOTUNIQUE, array('itemtype', 'component', 'tagid', 'contextid'));
        // Conditionally launch add index taglookup.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016011300.07);
    }
    if ($oldversion < 2016011301.0) {
        // Force uninstall of deleted tool.
        if (!file_exists("{$CFG->dirroot}/webservice/amf")) {
            // Remove capabilities.
            capabilities_cleanup('webservice_amf');
            // Remove all other associated config.
            unset_all_config_for_plugin('webservice_amf');
        }
        upgrade_main_savepoint(true, 2016011301.0);
    }
    if ($oldversion < 2016011901.0) {
        // Convert calendar_lookahead to nearest new value.
        $transaction = $DB->start_delegated_transaction();
        // Count all users who curretly have that preference set (for progress bar).
        $total = $DB->count_records_select('user_preferences', "name = 'calendar_lookahead' AND value != '0'");
        $pbar = new progress_bar('upgradecalendarlookahead', 500, true);
        // Get all these users, one at a time.
        $rs = $DB->get_recordset_select('user_preferences', "name = 'calendar_lookahead' AND value != '0'");
        $i = 0;
        foreach ($rs as $userpref) {
            // Calculate and set new lookahead value.
            if ($userpref->value > 90) {
                $newvalue = 120;
            } else {
                if ($userpref->value > 60 and $userpref->value < 90) {
                    $newvalue = 90;
                } else {
                    if ($userpref->value > 30 and $userpref->value < 60) {
                        $newvalue = 60;
                    } else {
                        if ($userpref->value > 21 and $userpref->value < 30) {
                            $newvalue = 30;
                        } else {
                            if ($userpref->value > 14 and $userpref->value < 21) {
                                $newvalue = 21;
                            } else {
                                if ($userpref->value > 7 and $userpref->value < 14) {
                                    $newvalue = 14;
                                } else {
                                    $newvalue = $userpref->value;
                                }
                            }
                        }
                    }
                }
            }
            $DB->set_field('user_preferences', 'value', $newvalue, array('id' => $userpref->id));
            // Update progress.
            $i++;
            $pbar->update($i, $total, "Upgrading user preference settings - {$i}/{$total}.");
        }
        $rs->close();
        $transaction->allow_commit();
        upgrade_main_savepoint(true, 2016011901.0);
    }
    if ($oldversion < 2016020200.0) {
        // Define field isstandard to be added to tag.
        $table = new xmldb_table('tag');
        $field = new xmldb_field('isstandard', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'rawname');
        // Conditionally launch add field isstandard.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Define index tagcolltype (not unique) to be dropped form tag.
        // This index is no longer created however it was present at some point and it's better to be safe and try to drop it.
        $index = new xmldb_index('tagcolltype', XMLDB_INDEX_NOTUNIQUE, array('tagcollid', 'tagtype'));
        // Conditionally launch drop index tagcolltype.
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Define index tagcolltype (not unique) to be added to tag.
        $index = new xmldb_index('tagcolltype', XMLDB_INDEX_NOTUNIQUE, array('tagcollid', 'isstandard'));
        // Conditionally launch add index tagcolltype.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Define field tagtype to be dropped from tag.
        $field = new xmldb_field('tagtype');
        // Conditionally launch drop field tagtype and update isstandard.
        if ($dbman->field_exists($table, $field)) {
            $DB->execute("UPDATE {tag} SET isstandard=(CASE WHEN (tagtype = ?) THEN 1 ELSE 0 END)", array('official'));
            $dbman->drop_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016020200.0);
    }
    if ($oldversion < 2016020201.0) {
        // Define field showstandard to be added to tag_area.
        $table = new xmldb_table('tag_area');
        $field = new xmldb_field('showstandard', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'callbackfile');
        // Conditionally launch add field showstandard.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // By default set user area to hide standard tags. 2 = core_tag_tag::HIDE_STANDARD (can not use constant here).
        $DB->execute("UPDATE {tag_area} SET showstandard = ? WHERE itemtype = ? AND component = ?", array(2, 'user', 'core'));
        // Changing precision of field enabled on table tag_area to (1).
        $table = new xmldb_table('tag_area');
        $field = new xmldb_field('enabled', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '1', 'itemtype');
        // Launch change of precision for field enabled.
        $dbman->change_field_precision($table, $field);
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016020201.0);
    }
    if ($oldversion < 2016021500.0) {
        $root = $CFG->tempdir . '/download';
        if (is_dir($root)) {
            // Fetch each repository type - include all repos, not just enabled.
            $repositories = $DB->get_records('repository', array(), '', 'type');
            foreach ($repositories as $id => $repository) {
                $directory = $root . '/repository_' . $repository->type;
                if (is_dir($directory)) {
                    fulldelete($directory);
                }
            }
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016021500.0);
    }
    if ($oldversion < 2016021501.0) {
        // This could take a long time. Unfortunately, no way to know how long, and no way to do progress, so setting for 1 hour.
        upgrade_set_timeout(3600);
        // Define index userid-itemid (not unique) to be added to grade_grades_history.
        $table = new xmldb_table('grade_grades_history');
        $index = new xmldb_index('userid-itemid-timemodified', XMLDB_INDEX_NOTUNIQUE, array('userid', 'itemid', 'timemodified'));
        // Conditionally launch add index userid-itemid.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016021501.0);
    }
    if ($oldversion < 2016030103.0) {
        // MDL-50887. Implement plugins infrastructure for antivirus and create ClamAV plugin.
        // This routine moves core ClamAV configuration to plugin level.
        // If clamav was configured and enabled, enable the plugin.
        if (!empty($CFG->runclamonupload) && !empty($CFG->pathtoclam)) {
            set_config('antiviruses', 'clamav');
        } else {
            set_config('antiviruses', '');
        }
        if (isset($CFG->runclamonupload)) {
            // Just unset global configuration, we have already enabled the plugin
            // which implies that ClamAV will be used for scanning uploaded files.
            unset_config('runclamonupload');
        }
        // Move core ClamAV configuration settings to plugin.
        if (isset($CFG->pathtoclam)) {
            set_config('pathtoclam', $CFG->pathtoclam, 'antivirus_clamav');
            unset_config('pathtoclam');
        }
        if (isset($CFG->quarantinedir)) {
            set_config('quarantinedir', $CFG->quarantinedir, 'antivirus_clamav');
            unset_config('quarantinedir');
        }
        if (isset($CFG->clamfailureonupload)) {
            set_config('clamfailureonupload', $CFG->clamfailureonupload, 'antivirus_clamav');
            unset_config('clamfailureonupload');
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016030103.0);
    }
    if ($oldversion < 2016030400.01) {
        // Add the new services field.
        $table = new xmldb_table('external_functions');
        $field = new xmldb_field('services', XMLDB_TYPE_CHAR, '1333', null, null, null, null, 'capabilities');
        // Conditionally launch add field services.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016030400.01);
    }
    if ($oldversion < 2016041500.5) {
        // Define table competency to be created.
        $table = new xmldb_table('competency');
        // Adding fields to table competency.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('shortname', XMLDB_TYPE_CHAR, '100', null, null, null, null);
        $table->add_field('description', XMLDB_TYPE_TEXT, null, null, null, null, null);
        $table->add_field('descriptionformat', XMLDB_TYPE_INTEGER, '4', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('idnumber', XMLDB_TYPE_CHAR, '100', null, null, null, null);
        $table->add_field('competencyframeworkid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('parentid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('path', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('sortorder', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('ruletype', XMLDB_TYPE_CHAR, '100', null, null, null, null);
        $table->add_field('ruleoutcome', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('ruleconfig', XMLDB_TYPE_TEXT, null, null, null, null, null);
        $table->add_field('scaleid', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('scaleconfiguration', XMLDB_TYPE_TEXT, null, null, null, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('usermodified', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        // Adding keys to table competency.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table competency.
        $table->add_index('idnumberframework', XMLDB_INDEX_UNIQUE, array('competencyframeworkid', 'idnumber'));
        $table->add_index('ruleoutcome', XMLDB_INDEX_NOTUNIQUE, array('ruleoutcome'));
        // Conditionally launch create table for competency.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016041500.5);
    }
    if ($oldversion < 2016041500.51) {
        // Define table competency_coursecompsetting to be created.
        $table = new xmldb_table('competency_coursecompsetting');
        // Adding fields to table competency_coursecompsetting.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('courseid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('pushratingstouserplans', XMLDB_TYPE_INTEGER, '2', null, null, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('usermodified', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        // Adding keys to table competency_coursecompsetting.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('courseidlink', XMLDB_KEY_FOREIGN_UNIQUE, array('courseid'), 'course', array('id'));
        // Conditionally launch create table for competency_coursecompsetting.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016041500.51);
    }
    if ($oldversion < 2016041500.52) {
        // Define table competency_framework to be created.
        $table = new xmldb_table('competency_framework');
        // Adding fields to table competency_framework.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('shortname', XMLDB_TYPE_CHAR, '100', null, null, null, null);
        $table->add_field('contextid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('idnumber', XMLDB_TYPE_CHAR, '100', null, null, null, null);
        $table->add_field('description', XMLDB_TYPE_TEXT, null, null, null, null, null);
        $table->add_field('descriptionformat', XMLDB_TYPE_INTEGER, '4', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('scaleid', XMLDB_TYPE_INTEGER, '11', null, null, null, null);
        $table->add_field('scaleconfiguration', XMLDB_TYPE_TEXT, null, null, XMLDB_NOTNULL, null, null);
        $table->add_field('visible', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '1');
        $table->add_field('taxonomies', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('usermodified', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        // Adding keys to table competency_framework.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table competency_framework.
        $table->add_index('idnumber', XMLDB_INDEX_UNIQUE, array('idnumber'));
        // Conditionally launch create table for competency_framework.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016041500.52);
    }
    if ($oldversion < 2016041500.53) {
        // Define table competency_coursecomp to be created.
        $table = new xmldb_table('competency_coursecomp');
        // Adding fields to table competency_coursecomp.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('courseid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('competencyid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('ruleoutcome', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('usermodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('sortorder', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table competency_coursecomp.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('courseidlink', XMLDB_KEY_FOREIGN, array('courseid'), 'course', array('id'));
        $table->add_key('competencyid', XMLDB_KEY_FOREIGN, array('competencyid'), 'competency_competency', array('id'));
        // Adding indexes to table competency_coursecomp.
        $table->add_index('courseidruleoutcome', XMLDB_INDEX_NOTUNIQUE, array('courseid', 'ruleoutcome'));
        $table->add_index('courseidcompetencyid', XMLDB_INDEX_UNIQUE, array('courseid', 'competencyid'));
        // Conditionally launch create table for competency_coursecomp.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016041500.53);
    }
    if ($oldversion < 2016041500.54) {
        // Define table competency_plan to be created.
        $table = new xmldb_table('competency_plan');
        // Adding fields to table competency_plan.
        $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('description', XMLDB_TYPE_TEXT, null, null, null, null, null);
        $table->add_field('descriptionformat', XMLDB_TYPE_INTEGER, '4', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('templateid', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('origtemplateid', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('status', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, null);
        $table->add_field('duedate', XMLDB_TYPE_INTEGER, '10', null, null, null, '0');
        $table->add_field('reviewerid', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('usermodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table competency_plan.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table competency_plan.
        $table->add_index('useridstatus', XMLDB_INDEX_NOTUNIQUE, array('userid', 'status'));
        $table->add_index('templateid', XMLDB_INDEX_NOTUNIQUE, array('templateid'));
        $table->add_index('statusduedate', XMLDB_INDEX_NOTUNIQUE, array('status', 'duedate'));
        // Conditionally launch create table for competency_plan.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016041500.54);
    }
    if ($oldversion < 2016041500.55) {
        // Define table competency_template to be created.
        $table = new xmldb_table('competency_template');
        // Adding fields to table competency_template.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('shortname', XMLDB_TYPE_CHAR, '100', null, null, null, null);
        $table->add_field('contextid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('description', XMLDB_TYPE_TEXT, null, null, null, null, null);
        $table->add_field('descriptionformat', XMLDB_TYPE_INTEGER, '4', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('visible', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '1');
        $table->add_field('duedate', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('usermodified', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        // Adding keys to table competency_template.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Conditionally launch create table for competency_template.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016041500.55);
    }
    if ($oldversion < 2016041500.56) {
        // Define table competency_templatecomp to be created.
        $table = new xmldb_table('competency_templatecomp');
        // Adding fields to table competency_templatecomp.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('templateid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('competencyid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('usermodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('sortorder', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        // Adding keys to table competency_templatecomp.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('templateidlink', XMLDB_KEY_FOREIGN, array('templateid'), 'competency_template', array('id'));
        $table->add_key('competencyid', XMLDB_KEY_FOREIGN, array('competencyid'), 'competency_competency', array('id'));
        // Conditionally launch create table for competency_templatecomp.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016041500.56);
    }
    if ($oldversion < 2016041500.57) {
        // Define table competency_templatecohort to be created.
        $table = new xmldb_table('competency_templatecohort');
        // Adding fields to table competency_templatecohort.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('templateid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('cohortid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('usermodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table competency_templatecohort.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table competency_templatecohort.
        $table->add_index('templateid', XMLDB_INDEX_NOTUNIQUE, array('templateid'));
        $table->add_index('templatecohortids', XMLDB_INDEX_UNIQUE, array('templateid', 'cohortid'));
        // Conditionally launch create table for competency_templatecohort.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016041500.57);
    }
    if ($oldversion < 2016041500.58) {
        // Define table competency_relatedcomp to be created.
        $table = new xmldb_table('competency_relatedcomp');
        // Adding fields to table competency_relatedcomp.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('competencyid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('relatedcompetencyid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('usermodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table competency_relatedcomp.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Conditionally launch create table for competency_relatedcomp.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016041500.58);
    }
    if ($oldversion < 2016041500.59) {
        // Define table competency_usercomp to be created.
        $table = new xmldb_table('competency_usercomp');
        // Adding fields to table competency_usercomp.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('competencyid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('status', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('reviewerid', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('proficiency', XMLDB_TYPE_INTEGER, '2', null, null, null, null);
        $table->add_field('grade', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('usermodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table competency_usercomp.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table competency_usercomp.
        $table->add_index('useridcompetency', XMLDB_INDEX_UNIQUE, array('userid', 'competencyid'));
        // Conditionally launch create table for competency_usercomp.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016041500.59);
    }
    if ($oldversion < 2016041500.6) {
        // Define table competency_usercompcourse to be created.
        $table = new xmldb_table('competency_usercompcourse');
        // Adding fields to table competency_usercompcourse.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('courseid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('competencyid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('proficiency', XMLDB_TYPE_INTEGER, '2', null, null, null, null);
        $table->add_field('grade', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('usermodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table competency_usercompcourse.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table competency_usercompcourse.
        $table->add_index('useridcoursecomp', XMLDB_INDEX_UNIQUE, array('userid', 'courseid', 'competencyid'));
        // Conditionally launch create table for competency_usercompcourse.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016041500.6);
    }
    if ($oldversion < 2016041500.61) {
        // Define table competency_usercompplan to be created.
        $table = new xmldb_table('competency_usercompplan');
        // Adding fields to table competency_usercompplan.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('competencyid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('planid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('proficiency', XMLDB_TYPE_INTEGER, '2', null, null, null, null);
        $table->add_field('grade', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('sortorder', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('usermodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table competency_usercompplan.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table competency_usercompplan.
        $table->add_index('usercompetencyplan', XMLDB_INDEX_UNIQUE, array('userid', 'competencyid', 'planid'));
        // Conditionally launch create table for competency_usercompplan.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016041500.61);
    }
    if ($oldversion < 2016041500.62) {
        // Define table competency_plancomp to be created.
        $table = new xmldb_table('competency_plancomp');
        // Adding fields to table competency_plancomp.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('planid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('competencyid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('sortorder', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('usermodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table competency_plancomp.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table competency_plancomp.
        $table->add_index('planidcompetencyid', XMLDB_INDEX_UNIQUE, array('planid', 'competencyid'));
        // Conditionally launch create table for competency_plancomp.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016041500.62);
    }
    if ($oldversion < 2016041500.63) {
        // Define table competency_evidence to be created.
        $table = new xmldb_table('competency_evidence');
        // Adding fields to table competency_evidence.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('usercompetencyid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('contextid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('action', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, null);
        $table->add_field('actionuserid', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('descidentifier', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('desccomponent', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('desca', XMLDB_TYPE_TEXT, null, null, null, null, null);
        $table->add_field('url', XMLDB_TYPE_CHAR, '255', null, null, null, null);
        $table->add_field('grade', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('note', XMLDB_TYPE_TEXT, null, null, null, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('usermodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table competency_evidence.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table competency_evidence.
        $table->add_index('usercompetencyid', XMLDB_INDEX_NOTUNIQUE, array('usercompetencyid'));
        // Conditionally launch create table for competency_evidence.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016041500.63);
    }
    if ($oldversion < 2016041500.64) {
        // Define table competency_userevidence to be created.
        $table = new xmldb_table('competency_userevidence');
        // Adding fields to table competency_userevidence.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('name', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null);
        $table->add_field('description', XMLDB_TYPE_TEXT, null, null, XMLDB_NOTNULL, null, null);
        $table->add_field('descriptionformat', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, null);
        $table->add_field('url', XMLDB_TYPE_TEXT, null, null, XMLDB_NOTNULL, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('usermodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table competency_userevidence.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table competency_userevidence.
        $table->add_index('userid', XMLDB_INDEX_NOTUNIQUE, array('userid'));
        // Conditionally launch create table for competency_userevidence.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016041500.64);
    }
    if ($oldversion < 2016041500.65) {
        // Define table competency_userevidencecomp to be created.
        $table = new xmldb_table('competency_userevidencecomp');
        // Adding fields to table competency_userevidencecomp.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('userevidenceid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('competencyid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('usermodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table competency_userevidencecomp.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table competency_userevidencecomp.
        $table->add_index('userevidenceid', XMLDB_INDEX_NOTUNIQUE, array('userevidenceid'));
        $table->add_index('userevidencecompids', XMLDB_INDEX_UNIQUE, array('userevidenceid', 'competencyid'));
        // Conditionally launch create table for competency_userevidencecomp.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016041500.65);
    }
    if ($oldversion < 2016041500.66) {
        // Define table competency_modulecomp to be created.
        $table = new xmldb_table('competency_modulecomp');
        // Adding fields to table competency_modulecomp.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('cmid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('usermodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('sortorder', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('competencyid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('ruleoutcome', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table competency_modulecomp.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('cmidkey', XMLDB_KEY_FOREIGN, array('cmid'), 'course_modules', array('id'));
        $table->add_key('competencyidkey', XMLDB_KEY_FOREIGN, array('competencyid'), 'competency_competency', array('id'));
        // Adding indexes to table competency_modulecomp.
        $table->add_index('cmidruleoutcome', XMLDB_INDEX_NOTUNIQUE, array('cmid', 'ruleoutcome'));
        $table->add_index('cmidcompetencyid', XMLDB_INDEX_UNIQUE, array('cmid', 'competencyid'));
        // Conditionally launch create table for competency_modulecomp.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016041500.66);
    }
    if ($oldversion < 2016042100.0) {
        // Update all countries to upper case.
        $DB->execute("UPDATE {user} SET country = UPPER(country)");
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016042100.0);
    }
    if ($oldversion < 2016042600.01) {
        $deprecatedwebservices = ['moodle_course_create_courses', 'moodle_course_get_courses', 'moodle_enrol_get_enrolled_users', 'moodle_enrol_get_users_courses', 'moodle_enrol_manual_enrol_users', 'moodle_file_get_files', 'moodle_file_upload', 'moodle_group_add_groupmembers', 'moodle_group_create_groups', 'moodle_group_delete_groupmembers', 'moodle_group_delete_groups', 'moodle_group_get_course_groups', 'moodle_group_get_groupmembers', 'moodle_group_get_groups', 'moodle_message_send_instantmessages', 'moodle_notes_create_notes', 'moodle_role_assign', 'moodle_role_unassign', 'moodle_user_create_users', 'moodle_user_delete_users', 'moodle_user_get_course_participants_by_id', 'moodle_user_get_users_by_courseid', 'moodle_user_get_users_by_id', 'moodle_user_update_users', 'core_grade_get_definitions', 'core_user_get_users_by_id', 'moodle_webservice_get_siteinfo', 'mod_forum_get_forum_discussions'];
        list($insql, $params) = $DB->get_in_or_equal($deprecatedwebservices);
        $DB->delete_records_select('external_functions', "name {$insql}", $params);
        $DB->delete_records_select('external_services_functions', "functionname {$insql}", $params);
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016042600.01);
    }
    if ($oldversion < 2016051300.0) {
        // Add a default competency rating scale.
        make_competence_scale();
        // Savepoint reached.
        upgrade_main_savepoint(true, 2016051300.0);
    }
    if ($oldversion < 2016051700.01) {
        // This script is included in each major version upgrade process (3.0, 3.1) so make sure we don't run it twice.
        if (empty($CFG->upgrade_letterboundarycourses)) {
            // MDL-45390. If a grade is being displayed with letters and the grade boundaries are not being adhered to properly
            // then this course will also be frozen.
            // If the changes are accepted then the display of some grades may change.
            // This is here to freeze the gradebook in affected courses.
            upgrade_course_letter_boundary();
            // To skip running the same script on the upgrade to the next major version release.
            set_config('upgrade_letterboundarycourses', 1);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016051700.01);
    }
    // Moodle v3.1.0 release upgrade line.
    // Put any upgrade step following this.
    if ($oldversion < 2016081700.0) {
        // If someone is emotionally attached to it let's leave the config (basically the version) there.
        if (!file_exists($CFG->dirroot . '/report/search/classes/output/form.php')) {
            unset_all_config_for_plugin('report_search');
        }
        // Savepoint reached.
        upgrade_main_savepoint(true, 2016081700.0);
    }
    if ($oldversion < 2016081700.02) {
        // Default schedule values.
        $hour = 0;
        $minute = 0;
        // Get the old settings.
        if (isset($CFG->statsruntimestarthour)) {
            $hour = $CFG->statsruntimestarthour;
        }
        if (isset($CFG->statsruntimestartminute)) {
            $minute = $CFG->statsruntimestartminute;
        }
        // Retrieve the scheduled task record first.
        $stattask = $DB->get_record('task_scheduled', array('component' => 'moodle', 'classname' => '\\core\\task\\stats_cron_task'));
        // Don't touch customised scheduling.
        if ($stattask && !$stattask->customised) {
            $nextruntime = mktime($hour, $minute, 0, date('m'), date('d'), date('Y'));
            if ($nextruntime < $stattask->lastruntime) {
                // Add 24 hours to the next run time.
                $newtime = new DateTime();
                $newtime->setTimestamp($nextruntime);
                $newtime->add(new DateInterval('P1D'));
                $nextruntime = $newtime->getTimestamp();
            }
            $stattask->nextruntime = $nextruntime;
            $stattask->minute = $minute;
            $stattask->hour = $hour;
            $stattask->customised = 1;
            $DB->update_record('task_scheduled', $stattask);
        }
        // These settings are no longer used.
        unset_config('statsruntimestarthour');
        unset_config('statsruntimestartminute');
        unset_config('statslastexecution');
        upgrade_main_savepoint(true, 2016081700.02);
    }
    if ($oldversion < 2016082200.0) {
        // An upgrade step to remove any duplicate stamps, within the same context, in the question_categories table, and to
        // add a unique index to (contextid, stamp) to avoid future stamp duplication. See MDL-54864.
        // Extend the execution time limit of the script to 2 hours.
        upgrade_set_timeout(7200);
        // This SQL fetches the id of those records which have duplicate stamps within the same context.
        // This doesn't return the original record within the context, from which the duplicate stamps were likely created.
        $fromclause = "FROM (\n                        SELECT min(id) AS minid, contextid, stamp\n                            FROM {question_categories}\n                            GROUP BY contextid, stamp\n                        ) minid\n                        JOIN {question_categories} qc\n                            ON qc.contextid = minid.contextid AND qc.stamp = minid.stamp AND qc.id > minid.minid";
        // Get the total record count - used for the progress bar.
        $countduplicatessql = "SELECT count(qc.id) {$fromclause}";
        $total = $DB->count_records_sql($countduplicatessql);
        // Get the records themselves.
        $getduplicatessql = "SELECT qc.id {$fromclause} ORDER BY minid";
        $rs = $DB->get_recordset_sql($getduplicatessql);
        // For each duplicate, update the stamp to a new random value.
        $i = 0;
        $pbar = new progress_bar('updatequestioncategorystamp', 500, true);
        foreach ($rs as $record) {
            // Generate a new, unique stamp and update the record.
            do {
                $newstamp = make_unique_id_code();
            } while (isset($usedstamps[$newstamp]));
            $usedstamps[$newstamp] = 1;
            $DB->set_field('question_categories', 'stamp', $newstamp, array('id' => $record->id));
            // Update progress.
            $i++;
            $pbar->update($i, $total, "Updating duplicate question category stamp - {$i}/{$total}.");
        }
        unset($usedstamps);
        // The uniqueness of each (contextid, stamp) pair is now guaranteed, so add the unique index to stop future duplicates.
        $table = new xmldb_table('question_categories');
        $index = new xmldb_index('contextidstamp', XMLDB_INDEX_UNIQUE, array('contextid', 'stamp'));
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Savepoint reached.
        upgrade_main_savepoint(true, 2016082200.0);
    }
    if ($oldversion < 2016091900.0) {
        // Removing the themes from core.
        $themes = array('base', 'canvas');
        foreach ($themes as $key => $theme) {
            if (check_dir_exists($CFG->dirroot . '/theme/' . $theme, false)) {
                // Ignore the themes that have been re-downloaded.
                unset($themes[$key]);
            }
        }
        if (!empty($themes)) {
            // Hacky emulation of plugin uninstallation.
            foreach ($themes as $theme) {
                unset_all_config_for_plugin('theme_' . $theme);
            }
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016091900.0);
    }
    if ($oldversion < 2016091900.02) {
        // Define index attemptstepid-name (unique) to be dropped from question_attempt_step_data.
        $table = new xmldb_table('question_attempt_step_data');
        $index = new xmldb_index('attemptstepid-name', XMLDB_INDEX_UNIQUE, array('attemptstepid', 'name'));
        // Conditionally launch drop index attemptstepid-name.
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016091900.02);
    }
    if ($oldversion < 2016100300.0) {
        unset_config('enablecssoptimiser');
        upgrade_main_savepoint(true, 2016100300.0);
    }
    if ($oldversion < 2016100501.0) {
        // Define field enddate to be added to course.
        $table = new xmldb_table('course');
        $field = new xmldb_field('enddate', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'startdate');
        // Conditionally launch add field enddate.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016100501.0);
    }
    if ($oldversion < 2016101100.0) {
        // Define field component to be added to message.
        $table = new xmldb_table('message');
        $field = new xmldb_field('component', XMLDB_TYPE_CHAR, '100', null, null, null, null, 'timeusertodeleted');
        // Conditionally launch add field component.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Define field eventtype to be added to message.
        $field = new xmldb_field('eventtype', XMLDB_TYPE_CHAR, '100', null, null, null, null, 'component');
        // Conditionally launch add field eventtype.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016101100.0);
    }
    if ($oldversion < 2016101101.0) {
        // Define field component to be added to message_read.
        $table = new xmldb_table('message_read');
        $field = new xmldb_field('component', XMLDB_TYPE_CHAR, '100', null, null, null, null, 'timeusertodeleted');
        // Conditionally launch add field component.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Define field eventtype to be added to message_read.
        $field = new xmldb_field('eventtype', XMLDB_TYPE_CHAR, '100', null, null, null, null, 'component');
        // Conditionally launch add field eventtype.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016101101.0);
    }
    if ($oldversion < 2016101401.0) {
        // Clean up repository_alfresco config unless plugin has been manually installed.
        if (!file_exists($CFG->dirroot . '/repository/alfresco/lib.php')) {
            // Remove capabilities.
            capabilities_cleanup('repository_alfresco');
            // Clean config.
            unset_all_config_for_plugin('repository_alfresco');
        }
        // Savepoint reached.
        upgrade_main_savepoint(true, 2016101401.0);
    }
    if ($oldversion < 2016101401.02) {
        $table = new xmldb_table('external_tokens');
        $field = new xmldb_field('privatetoken', XMLDB_TYPE_CHAR, '64', null, null, null, null);
        // Conditionally add privatetoken field to the external_tokens table.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016101401.02);
    }
    if ($oldversion < 2016110202.0) {
        // Force uninstall of deleted authentication plugin.
        if (!file_exists("{$CFG->dirroot}/auth/radius")) {
            // Leave settings inplace if there are radius users.
            if (!$DB->record_exists('user', array('auth' => 'radius', 'deleted' => 0))) {
                // Remove all other associated config.
                unset_all_config_for_plugin('auth/radius');
                // The version number for radius is in this format.
                unset_all_config_for_plugin('auth_radius');
            }
        }
        upgrade_main_savepoint(true, 2016110202.0);
    }
    if ($oldversion < 2016110300.0) {
        // Remove unused admin email setting.
        unset_config('emailonlyfromreplyaddress');
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016110300.0);
    }
    if ($oldversion < 2016110500.0) {
        $oldplayers = ['vimeo' => null, 'mp3' => ['.mp3'], 'html5video' => ['.mov', '.mp4', '.m4v', '.mpeg', '.mpe', '.mpg', '.ogv', '.webm'], 'flv' => ['.flv', '.f4v'], 'html5audio' => ['.aac', '.flac', '.mp3', '.m4a', '.oga', '.ogg', '.wav'], 'youtube' => null, 'swf' => null];
        // Convert hardcoded media players to the settings of the new media player plugin type.
        if (get_config('core', 'media_plugins_sortorder') === false) {
            $enabledplugins = [];
            $videoextensions = [];
            $audioextensions = [];
            foreach ($oldplayers as $oldplayer => $extensions) {
                $settingname = 'core_media_enable_' . $oldplayer;
                if (!empty($CFG->{$settingname})) {
                    if ($extensions) {
                        // VideoJS will be used for all media files players that were used previously.
                        $enabledplugins['videojs'] = 'videojs';
                        if ($oldplayer === 'mp3' || $oldplayer === 'html5audio') {
                            $audioextensions += array_combine($extensions, $extensions);
                        } else {
                            $videoextensions += array_combine($extensions, $extensions);
                        }
                    } else {
                        // Enable youtube, vimeo and swf.
                        $enabledplugins[$oldplayer] = $oldplayer;
                    }
                }
            }
            set_config('media_plugins_sortorder', join(',', $enabledplugins));
            // Configure VideoJS to match the existing players set up.
            if ($enabledplugins['videojs']) {
                $enabledplugins[] = 'videojs';
                set_config('audioextensions', join(',', $audioextensions), 'media_videojs');
                set_config('videoextensions', join(',', $videoextensions), 'media_videojs');
                $useflash = !empty($CFG->core_media_enable_flv) || !empty($CFG->core_media_enable_mp3);
                set_config('useflash', $useflash, 'media_videojs');
                if (empty($CFG->core_media_enable_youtube)) {
                    // Normally YouTube is enabled in videojs, but if youtube converter was disabled before upgrade
                    // disable it in videojs as well.
                    set_config('youtube', false, 'media_videojs');
                }
            }
        }
        // Unset old settings.
        foreach ($oldplayers as $oldplayer => $extensions) {
            unset_config('core_media_enable_' . $oldplayer);
        }
        // Preset defaults if CORE_MEDIA_VIDEO_WIDTH and CORE_MEDIA_VIDEO_HEIGHT are specified in config.php .
        // After this upgrade step these constants will not be used any more.
        if (defined('CORE_MEDIA_VIDEO_WIDTH')) {
            set_config('media_default_width', CORE_MEDIA_VIDEO_WIDTH);
        }
        if (defined('CORE_MEDIA_VIDEO_HEIGHT')) {
            set_config('media_default_height', CORE_MEDIA_VIDEO_HEIGHT);
        }
        // Savepoint reached.
        upgrade_main_savepoint(true, 2016110500.0);
    }
    if ($oldversion < 2016110600.0) {
        // Define a field 'deletioninprogress' in the 'course_modules' table, to background deletion tasks.
        $table = new xmldb_table('course_modules');
        $field = new xmldb_field('deletioninprogress', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'availability');
        // Conditionally launch add field 'deletioninprogress'.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2016110600.0);
    }
    return true;
}
示例#4
0
/**
 * Main upgrade tasks to be executed on Moodle version bump
 *
 * This function is automatically executed after one bump in the Moodle core
 * version is detected. It's in charge of performing the required tasks
 * to raise core from the previous version to the next one.
 *
 * It's a collection of ordered blocks of code, named "upgrade steps",
 * each one performing one isolated (from the rest of steps) task. Usually
 * tasks involve creating new DB objects or performing manipulation of the
 * information for cleanup/fixup purposes.
 *
 * Each upgrade step has a fixed structure, that can be summarised as follows:
 *
 * if ($oldversion < XXXXXXXXXX.XX) {
 *     // Explanation of the update step, linking to issue in the Tracker if necessary
 *     upgrade_set_timeout(XX); // Optional for big tasks
 *     // Code to execute goes here, usually the XMLDB Editor will
 *     // help you here. See {@link http://docs.moodle.org/dev/XMLDB_editor}.
 *     upgrade_main_savepoint(true, XXXXXXXXXX.XX);
 * }
 *
 * All plugins within Moodle (modules, blocks, reports...) support the existence of
 * their own upgrade.php file, using the "Frankenstyle" component name as
 * defined at {@link http://docs.moodle.org/dev/Frankenstyle}, for example:
 *     - {@link xmldb_page_upgrade($oldversion)}. (modules don't require the plugintype ("mod_") to be used.
 *     - {@link xmldb_auth_manual_upgrade($oldversion)}.
 *     - {@link xmldb_workshopform_accumulative_upgrade($oldversion)}.
 *     - ....
 *
 * In order to keep the contents of this file reduced, it's allowed to create some helper
 * functions to be used here in the {@link upgradelib.php} file at the same directory. Note
 * that such a file must be manually included from upgrade.php, and there are some restrictions
 * about what can be used within it.
 *
 * For more information, take a look to the documentation available:
 *     - Data definition API: {@link http://docs.moodle.org/dev/Data_definition_API}
 *     - Upgrade API: {@link http://docs.moodle.org/dev/Upgrade_API}
 *
 * @param int $oldversion
 * @return bool always true
 */
function xmldb_main_upgrade($oldversion)
{
    global $CFG, $USER, $DB, $OUTPUT, $SITE, $COURSE;
    require_once $CFG->libdir . '/db/upgradelib.php';
    // Core Upgrade-related functions
    $dbman = $DB->get_manager();
    // loads ddl manager and xmldb classes
    if ($oldversion < 2011120500) {
        // just in case somebody hacks upgrade scripts or env, we really can not continue
        echo "You need to upgrade to 2.2.x first!\n";
        exit(1);
        // Note this savepoint is 100% unreachable, but needed to pass the upgrade checks
        upgrade_main_savepoint(true, 2011120500);
    }
    // Moodle v2.2.0 release upgrade line
    // Put any upgrade step following this
    if ($oldversion < 2011120500.02) {
        upgrade_set_timeout(60 * 20);
        // This may take a while
        // MDL-28180. Some missing restrictions in certain backup & restore operations
        // were causing incorrect duplicates in the course_completion_aggr_methd table.
        // This upgrade step takes rid of them.
        $sql = 'SELECT course, criteriatype, MIN(id) AS minid
                  FROM {course_completion_aggr_methd}
              GROUP BY course, criteriatype
                HAVING COUNT(*) > 1';
        $duprs = $DB->get_recordset_sql($sql);
        foreach ($duprs as $duprec) {
            // We need to handle NULLs in criteriatype diferently
            if (is_null($duprec->criteriatype)) {
                $where = 'course = ? AND criteriatype IS NULL AND id > ?';
                $params = array($duprec->course, $duprec->minid);
            } else {
                $where = 'course = ? AND criteriatype = ? AND id > ?';
                $params = array($duprec->course, $duprec->criteriatype, $duprec->minid);
            }
            $DB->delete_records_select('course_completion_aggr_methd', $where, $params);
        }
        $duprs->close();
        // Main savepoint reached
        upgrade_main_savepoint(true, 2011120500.02);
    }
    if ($oldversion < 2011120500.03) {
        // Changing precision of field value on table user_preferences to (1333)
        $table = new xmldb_table('user_preferences');
        $field = new xmldb_field('value', XMLDB_TYPE_CHAR, '1333', null, XMLDB_NOTNULL, null, null, 'name');
        // Launch change of precision for field value
        $dbman->change_field_precision($table, $field);
        // Main savepoint reached
        upgrade_main_savepoint(true, 2011120500.03);
    }
    if ($oldversion < 2012020200.03) {
        // Define index rolecontext (not unique) to be added to role_assignments
        $table = new xmldb_table('role_assignments');
        $index = new xmldb_index('rolecontext', XMLDB_INDEX_NOTUNIQUE, array('roleid', 'contextid'));
        // Conditionally launch add index rolecontext
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Define index usercontextrole (not unique) to be added to role_assignments
        $index = new xmldb_index('usercontextrole', XMLDB_INDEX_NOTUNIQUE, array('userid', 'contextid', 'roleid'));
        // Conditionally launch add index usercontextrole
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012020200.03);
    }
    if ($oldversion < 2012020200.06) {
        // Previously we always allowed users to override their email address via the messaging system
        // We have now added a setting to allow admins to turn this this ability on and off
        // While this setting defaults to 0 (off) we're setting it to 1 (on) to maintain the behaviour for upgrading sites
        set_config('messagingallowemailoverride', 1);
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012020200.06);
    }
    if ($oldversion < 2012021700.01) {
        // Changing precision of field uniquehash on table post to 255
        $table = new xmldb_table('post');
        $field = new xmldb_field('uniquehash', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null, 'content');
        // Launch change of precision for field uniquehash
        $dbman->change_field_precision($table, $field);
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012021700.01);
    }
    if ($oldversion < 2012021700.02) {
        // Somewhere before 1.9 summary and content column in post table were not null. In 1.9+
        // not null became false.
        $columns = $DB->get_columns('post');
        // Fix discrepancies in summary field after upgrade from 1.9
        if (array_key_exists('summary', $columns) && $columns['summary']->not_null != false) {
            $table = new xmldb_table('post');
            $summaryfield = new xmldb_field('summary', XMLDB_TYPE_TEXT, 'big', null, null, null, null, 'subject');
            if ($dbman->field_exists($table, $summaryfield)) {
                $dbman->change_field_notnull($table, $summaryfield);
            }
        }
        // Fix discrepancies in content field after upgrade from 1.9
        if (array_key_exists('content', $columns) && $columns['content']->not_null != false) {
            $table = new xmldb_table('post');
            $contentfield = new xmldb_field('content', XMLDB_TYPE_TEXT, 'big', null, null, null, null, 'summary');
            if ($dbman->field_exists($table, $contentfield)) {
                $dbman->change_field_notnull($table, $contentfield);
            }
        }
        upgrade_main_savepoint(true, 2012021700.02);
    }
    // The ability to backup user (private) files is out completely - MDL-29248
    if ($oldversion < 2012030100.01) {
        unset_config('backup_general_user_files', 'backup');
        unset_config('backup_general_user_files_locked', 'backup');
        unset_config('backup_auto_user_files', 'backup');
        upgrade_main_savepoint(true, 2012030100.01);
    }
    if ($oldversion < 2012030900.01) {
        // Migrate all numbers to signed & all texts and binaries to big size.
        // It should be safe to interrupt this and continue later.
        upgrade_mysql_fix_unsigned_and_lob_columns();
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012030900.01);
    }
    if ($oldversion < 2012031500.01) {
        // Upgrade old course_allowed_modules data to be permission overrides.
        if ($CFG->restrictmodulesfor === 'all') {
            $courses = $DB->get_records_menu('course', array(), 'id', 'id, 1');
        } else {
            if ($CFG->restrictmodulesfor === 'requested') {
                $courses = $DB->get_records_menu('course', array('restrictmodules' => 1), 'id', 'id, 1');
            } else {
                $courses = array();
            }
        }
        if (!$dbman->table_exists('course_allowed_modules')) {
            // Upgrade must already have been run on this server. This might happen,
            // for example, during development of these changes.
            $courses = array();
        }
        $modidtoname = $DB->get_records_menu('modules', array(), 'id', 'id, name');
        $coursecount = count($courses);
        if ($coursecount) {
            $pbar = new progress_bar('allowedmods', 500, true);
            $transaction = $DB->start_delegated_transaction();
        }
        $i = 0;
        foreach ($courses as $courseid => $notused) {
            $i += 1;
            upgrade_set_timeout(60);
            // 1 minute per course should be fine.
            $allowedmoduleids = $DB->get_records_menu('course_allowed_modules', array('course' => $courseid), 'module', 'module, 1');
            if (empty($allowedmoduleids)) {
                // This seems to be the best match for backwards compatibility,
                // not necessarily with the old code in course_allowed_module function,
                // but with the code that used to be in the coures settings form.
                $allowedmoduleids = explode(',', $CFG->defaultallowedmodules);
                $allowedmoduleids = array_combine($allowedmoduleids, $allowedmoduleids);
            }
            $context = context_course::instance($courseid);
            list($roleids) = get_roles_with_cap_in_context($context, 'moodle/course:manageactivities');
            list($managerroleids) = get_roles_with_cap_in_context($context, 'moodle/site:config');
            foreach ($managerroleids as $roleid) {
                unset($roleids[$roleid]);
            }
            foreach ($modidtoname as $modid => $modname) {
                if (isset($allowedmoduleids[$modid])) {
                    // Module is allowed, no worries.
                    continue;
                }
                $capability = 'mod/' . $modname . ':addinstance';
                foreach ($roleids as $roleid) {
                    assign_capability($capability, CAP_PREVENT, $roleid, $context);
                }
            }
            $pbar->update($i, $coursecount, "Upgrading legacy course_allowed_modules data - {$i}/{$coursecount}.");
        }
        if ($coursecount) {
            $transaction->allow_commit();
        }
        upgrade_main_savepoint(true, 2012031500.01);
    }
    if ($oldversion < 2012031500.02) {
        // Define field restrictmodules to be dropped from course
        $table = new xmldb_table('course');
        $field = new xmldb_field('restrictmodules');
        // Conditionally launch drop field requested
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Since structure of 'course' table has changed we need to re-read $SITE from DB.
        $SITE = $DB->get_record('course', array('id' => $SITE->id));
        $COURSE = clone $SITE;
        upgrade_main_savepoint(true, 2012031500.02);
    }
    if ($oldversion < 2012031500.03) {
        // Define table course_allowed_modules to be dropped
        $table = new xmldb_table('course_allowed_modules');
        // Conditionally launch drop table for course_allowed_modules
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        upgrade_main_savepoint(true, 2012031500.03);
    }
    if ($oldversion < 2012031500.04) {
        // Clean up the old admin settings.
        unset_config('restrictmodulesfor');
        unset_config('restrictbydefault');
        unset_config('defaultallowedmodules');
        upgrade_main_savepoint(true, 2012031500.04);
    }
    if ($oldversion < 2012032300.02) {
        // Migrate the old admin debug setting.
        if ($CFG->debug == 38911) {
            set_config('debug', DEBUG_DEVELOPER);
        } else {
            if ($CFG->debug == 6143) {
                set_config('debug', DEBUG_ALL);
            }
        }
        upgrade_main_savepoint(true, 2012032300.02);
    }
    if ($oldversion < 2012042300.0) {
        // This change makes the course_section index unique.
        // Look for any duplicate course_sections entries. There should not be
        // any but on some busy systems we found a few, maybe due to previous
        // bugs.
        $transaction = $DB->start_delegated_transaction();
        $rs = $DB->get_recordset_sql('
                SELECT DISTINCT
                    cs.id, cs.course
                FROM
                    {course_sections} cs
                    INNER JOIN {course_sections} older
                        ON cs.course = older.course AND cs.section = older.section
                        AND older.id < cs.id');
        foreach ($rs as $rec) {
            $DB->delete_records('course_sections', array('id' => $rec->id));
            // We can't use rebuild_course_cache() here because introducing sectioncache later
            // so reset modinfo manually.
            $DB->set_field('course', 'modinfo', null, array('id' => $rec->course));
        }
        $rs->close();
        $transaction->allow_commit();
        // XMLDB does not allow changing index uniqueness - instead we must drop
        // index then add it again.
        // MDL-46182: The query to make the index unique uses the index,
        // so the removal of the non-unique version needs to happen after any
        // data changes have been made.
        $table = new xmldb_table('course_sections');
        $index = new xmldb_index('course_section', XMLDB_INDEX_NOTUNIQUE, array('course', 'section'));
        // Conditionally launch drop index course_section.
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Define index course_section (unique) to be added to course_sections
        $index = new xmldb_index('course_section', XMLDB_INDEX_UNIQUE, array('course', 'section'));
        // Conditionally launch add index course_section
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012042300.0);
    }
    if ($oldversion < 2012042300.02) {
        require_once $CFG->dirroot . '/completion/criteria/completion_criteria.php';
        // Delete orphaned criteria which were left when modules were removed
        if ($DB->get_dbfamily() === 'mysql') {
            $sql = "DELETE cc FROM {course_completion_criteria} cc\n                    LEFT JOIN {course_modules} cm ON cm.id = cc.moduleinstance\n                    WHERE cm.id IS NULL AND cc.criteriatype = " . COMPLETION_CRITERIA_TYPE_ACTIVITY;
        } else {
            $sql = "DELETE FROM {course_completion_criteria}\n                    WHERE NOT EXISTS (\n                        SELECT 'x' FROM {course_modules}\n                        WHERE {course_modules}.id = {course_completion_criteria}.moduleinstance)\n                    AND {course_completion_criteria}.criteriatype = " . COMPLETION_CRITERIA_TYPE_ACTIVITY;
        }
        $DB->execute($sql);
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012042300.02);
    }
    if ($oldversion < 2012050300.01) {
        // Make sure deleted users do not have picture flag.
        $DB->set_field('user', 'picture', 0, array('deleted' => 1, 'picture' => 1));
        upgrade_main_savepoint(true, 2012050300.01);
    }
    if ($oldversion < 2012050300.02) {
        // Changing precision of field picture on table user to (10)
        $table = new xmldb_table('user');
        $field = new xmldb_field('picture', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'secret');
        // Launch change of precision for field picture
        $dbman->change_field_precision($table, $field);
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012050300.02);
    }
    if ($oldversion < 2012050300.03) {
        // Define field coursedisplay to be added to course
        $table = new xmldb_table('course');
        $field = new xmldb_field('coursedisplay', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0', 'completionnotify');
        // Conditionally launch add field coursedisplay
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Since structure of 'course' table has changed we need to re-read $SITE from DB.
        $SITE = $DB->get_record('course', array('id' => $SITE->id));
        $COURSE = clone $SITE;
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012050300.03);
    }
    if ($oldversion < 2012050300.04) {
        // Define table course_display to be dropped
        $table = new xmldb_table('course_display');
        // Conditionally launch drop table for course_display
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012050300.04);
    }
    if ($oldversion < 2012050300.05) {
        // Clean up removed admin setting.
        unset_config('navlinkcoursesections');
        upgrade_main_savepoint(true, 2012050300.05);
    }
    if ($oldversion < 2012050400.01) {
        // Define index sortorder (not unique) to be added to course
        $table = new xmldb_table('course');
        $index = new xmldb_index('sortorder', XMLDB_INDEX_NOTUNIQUE, array('sortorder'));
        // Conditionally launch add index sortorder
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012050400.01);
    }
    if ($oldversion < 2012050400.02) {
        // Clean up removed admin setting.
        unset_config('enablecourseajax');
        upgrade_main_savepoint(true, 2012050400.02);
    }
    if ($oldversion < 2012051100.01) {
        // Define field idnumber to be added to groups
        $table = new xmldb_table('groups');
        $field = new xmldb_field('idnumber', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null, 'courseid');
        $index = new xmldb_index('idnumber', XMLDB_INDEX_NOTUNIQUE, array('idnumber'));
        // Conditionally launch add field idnumber
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Conditionally launch add index idnumber
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Define field idnumber to be added to groupings
        $table = new xmldb_table('groupings');
        $field = new xmldb_field('idnumber', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null, 'name');
        $index = new xmldb_index('idnumber', XMLDB_INDEX_NOTUNIQUE, array('idnumber'));
        // Conditionally launch add field idnumber
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Conditionally launch add index idnumber
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012051100.01);
    }
    if ($oldversion < 2012051100.03) {
        // Amend course table to add sectioncache cache
        $table = new xmldb_table('course');
        $field = new xmldb_field('sectioncache', XMLDB_TYPE_TEXT, null, null, null, null, null, 'showgrades');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Amend course_sections to add date, time and groupingid availability
        // conditions and a setting about whether to show them
        $table = new xmldb_table('course_sections');
        $field = new xmldb_field('availablefrom', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'visible');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('availableuntil', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'availablefrom');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('showavailability', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'availableuntil');
        // Conditionally launch add field showavailability
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('groupingid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'showavailability');
        // Conditionally launch add field groupingid
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Since structure of 'course' table has changed we need to re-read $SITE from DB.
        $SITE = $DB->get_record('course', array('id' => $SITE->id));
        $COURSE = clone $SITE;
        // Add course_sections_availability to add completion & grade availability conditions
        $table = new xmldb_table('course_sections_availability');
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('coursesectionid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('sourcecmid', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('requiredcompletion', XMLDB_TYPE_INTEGER, '1', null, null, null, null);
        $table->add_field('gradeitemid', XMLDB_TYPE_INTEGER, '10', null, 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);
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('coursesectionid', XMLDB_KEY_FOREIGN, array('coursesectionid'), 'course_sections', array('id'));
        $table->add_key('sourcecmid', XMLDB_KEY_FOREIGN, array('sourcecmid'), 'course_modules', array('id'));
        $table->add_key('gradeitemid', XMLDB_KEY_FOREIGN, array('gradeitemid'), 'grade_items', array('id'));
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012051100.03);
    }
    if ($oldversion < 2012052100.0) {
        // Define field referencefileid to be added to files.
        $table = new xmldb_table('files');
        // Define field referencefileid to be added to files.
        $field = new xmldb_field('referencefileid', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'sortorder');
        // Conditionally launch add field referencefileid.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Define field referencelastsync to be added to files.
        $field = new xmldb_field('referencelastsync', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'referencefileid');
        // Conditionally launch add field referencelastsync.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Define field referencelifetime to be added to files.
        $field = new xmldb_field('referencelifetime', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'referencelastsync');
        // Conditionally launch add field referencelifetime.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $key = new xmldb_key('referencefileid', XMLDB_KEY_FOREIGN, array('referencefileid'), 'files_reference', array('id'));
        // Launch add key referencefileid
        $dbman->add_key($table, $key);
        // Define table files_reference to be created.
        $table = new xmldb_table('files_reference');
        // Adding fields to table files_reference.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('repositoryid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('lastsync', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('lifetime', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('reference', XMLDB_TYPE_TEXT, null, null, null, null, null);
        // Adding keys to table files_reference.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('repositoryid', XMLDB_KEY_FOREIGN, array('repositoryid'), 'repository_instances', array('id'));
        // Conditionally launch create table for files_reference
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012052100.0);
    }
    if ($oldversion < 2012052500.03) {
        // fix invalid course_completion_records MDL-27368
        //first get all instances of duplicate records
        $sql = 'SELECT userid, course FROM {course_completions} WHERE (deleted IS NULL OR deleted <> 1) GROUP BY userid, course HAVING (count(id) > 1)';
        $duplicates = $DB->get_recordset_sql($sql, array());
        foreach ($duplicates as $duplicate) {
            $pointer = 0;
            //now get all the records for this user/course
            $sql = 'userid = ? AND course = ? AND (deleted IS NULL OR deleted <> 1)';
            $completions = $DB->get_records_select('course_completions', $sql, array($duplicate->userid, $duplicate->course), 'timecompleted DESC, timestarted DESC');
            $needsupdate = false;
            $origcompletion = null;
            foreach ($completions as $completion) {
                $pointer++;
                if ($pointer === 1) {
                    //keep 1st record but delete all others.
                    $origcompletion = $completion;
                } else {
                    //we need to keep the "oldest" of all these fields as the valid completion record.
                    $fieldstocheck = array('timecompleted', 'timestarted', 'timeenrolled');
                    foreach ($fieldstocheck as $f) {
                        if ($origcompletion->{$f} > $completion->{$f}) {
                            $origcompletion->{$f} = $completion->{$f};
                            $needsupdate = true;
                        }
                    }
                    $DB->delete_records('course_completions', array('id' => $completion->id));
                }
            }
            if ($needsupdate) {
                $DB->update_record('course_completions', $origcompletion);
            }
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012052500.03);
    }
    if ($oldversion < 2012052900.0) {
        // Clean up all duplicate records in the course_completions table in preparation
        // for adding a new index there.
        upgrade_course_completion_remove_duplicates('course_completions', array('userid', 'course'), array('timecompleted', 'timestarted', 'timeenrolled'));
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012052900.0);
    }
    if ($oldversion < 2012052900.01) {
        // Add indexes to prevent new duplicates in the course_completions table.
        // Define index useridcourse (unique) to be added to course_completions
        $table = new xmldb_table('course_completions');
        $index = new xmldb_index('useridcourse', XMLDB_INDEX_UNIQUE, array('userid', 'course'));
        // Conditionally launch add index useridcourse
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012052900.01);
    }
    if ($oldversion < 2012052900.02) {
        // Clean up all duplicate records in the course_completion_crit_compl table in preparation
        // for adding a new index there.
        upgrade_course_completion_remove_duplicates('course_completion_crit_compl', array('userid', 'course', 'criteriaid'), array('timecompleted'));
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012052900.02);
    }
    if ($oldversion < 2012052900.03) {
        // Add indexes to prevent new duplicates in the course_completion_crit_compl table.
        // Define index useridcoursecriteraid (unique) to be added to course_completion_crit_compl
        $table = new xmldb_table('course_completion_crit_compl');
        $index = new xmldb_index('useridcoursecriteraid', XMLDB_INDEX_UNIQUE, array('userid', 'course', 'criteriaid'));
        // Conditionally launch add index useridcoursecriteraid
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012052900.03);
    }
    if ($oldversion < 2012052900.04) {
        // Clean up all duplicate records in the course_completion_aggr_methd table in preparation
        // for adding a new index there.
        upgrade_course_completion_remove_duplicates('course_completion_aggr_methd', array('course', 'criteriatype'));
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012052900.04);
    }
    if ($oldversion < 2012052900.05) {
        // Add indexes to prevent new duplicates in the course_completion_aggr_methd table.
        // Define index coursecriteratype (unique) to be added to course_completion_aggr_methd
        $table = new xmldb_table('course_completion_aggr_methd');
        $index = new xmldb_index('coursecriteriatype', XMLDB_INDEX_UNIQUE, array('course', 'criteriatype'));
        // Conditionally launch add index coursecriteratype
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012052900.05);
    }
    if ($oldversion < 2012060600.01) {
        // Add field referencehash to files_reference
        $table = new xmldb_table('files_reference');
        $field = new xmldb_field('referencehash', XMLDB_TYPE_CHAR, '40', null, XMLDB_NOTNULL, null, null, 'reference');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        upgrade_main_savepoint(true, 2012060600.01);
    }
    if ($oldversion < 2012060600.02) {
        // Populate referencehash field with SHA1 hash of the reference - this shoudl affect only 2.3dev sites
        // that were using the feature for testing. Production sites have the table empty.
        $rs = $DB->get_recordset('files_reference', null, '', 'id, reference');
        foreach ($rs as $record) {
            $hash = sha1($record->reference);
            $DB->set_field('files_reference', 'referencehash', $hash, array('id' => $record->id));
        }
        $rs->close();
        upgrade_main_savepoint(true, 2012060600.02);
    }
    if ($oldversion < 2012060600.03) {
        // Merge duplicate records in files_reference that were created during the development
        // phase at 2.3dev sites. This is needed so we can create the unique index over
        // (repositoryid, referencehash) fields.
        $sql = "SELECT repositoryid, referencehash, MIN(id) AS minid\n                  FROM {files_reference}\n              GROUP BY repositoryid, referencehash\n                HAVING COUNT(*) > 1";
        $duprs = $DB->get_recordset_sql($sql);
        foreach ($duprs as $duprec) {
            // get the list of all ids in {files_reference} that need to be remapped
            $dupids = $DB->get_records_select('files_reference', "repositoryid = ? AND referencehash = ? AND id > ?", array($duprec->repositoryid, $duprec->referencehash, $duprec->minid), '', 'id');
            $dupids = array_keys($dupids);
            // relink records in {files} that are now referring to a duplicate record
            // in {files_reference} to refer to the first one
            list($subsql, $subparams) = $DB->get_in_or_equal($dupids);
            $DB->set_field_select('files', 'referencefileid', $duprec->minid, "referencefileid {$subsql}", $subparams);
            // and finally remove all orphaned records from {files_reference}
            $DB->delete_records_list('files_reference', 'id', $dupids);
        }
        $duprs->close();
        upgrade_main_savepoint(true, 2012060600.03);
    }
    if ($oldversion < 2012060600.04) {
        // Add a unique index over repositoryid and referencehash fields in files_reference table
        $table = new xmldb_table('files_reference');
        $index = new xmldb_index('uq_external_file', XMLDB_INDEX_UNIQUE, array('repositoryid', 'referencehash'));
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        upgrade_main_savepoint(true, 2012060600.04);
    }
    if ($oldversion < 2012061800.01) {
        // Define field screenreader to be dropped from user
        $table = new xmldb_table('user');
        $field = new xmldb_field('ajax');
        // Conditionally launch drop field screenreader
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012061800.01);
    }
    if ($oldversion < 2012062000.0) {
        // Add field newcontextid to backup_files_template
        $table = new xmldb_table('backup_files_template');
        $field = new xmldb_field('newcontextid', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'info');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        upgrade_main_savepoint(true, 2012062000.0);
    }
    if ($oldversion < 2012062000.01) {
        // Add field newitemid to backup_files_template
        $table = new xmldb_table('backup_files_template');
        $field = new xmldb_field('newitemid', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'newcontextid');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        upgrade_main_savepoint(true, 2012062000.01);
    }
    // Moodle v2.3.0 release upgrade line
    // Put any upgrade step following this
    if ($oldversion < 2012062500.02) {
        // 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, 2012062500.02);
    }
    if ($oldversion < 2012070600.04) {
        // Define table course_modules_avail_fields to be created
        $table = new xmldb_table('course_modules_avail_fields');
        // Adding fields to table course_modules_avail_fields
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('coursemoduleid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('userfield', XMLDB_TYPE_CHAR, '50', null, null, null, null);
        $table->add_field('customfieldid', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('operator', XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, null);
        $table->add_field('value', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table course_modules_avail_fields
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('coursemoduleid', XMLDB_KEY_FOREIGN, array('coursemoduleid'), 'course_modules', array('id'));
        // Conditionally launch create table for course_modules_avail_fields
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012070600.04);
    }
    if ($oldversion < 2012070600.05) {
        // Define table course_sections_avail_fields to be created
        $table = new xmldb_table('course_sections_avail_fields');
        // Adding fields to table course_sections_avail_fields
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('coursesectionid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('userfield', XMLDB_TYPE_CHAR, '50', null, null, null, null);
        $table->add_field('customfieldid', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('operator', XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, null);
        $table->add_field('value', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table course_sections_avail_fields
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('coursesectionid', XMLDB_KEY_FOREIGN, array('coursesectionid'), 'course_sections', array('id'));
        // Conditionally launch create table for course_sections_avail_fields
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012070600.05);
    }
    if ($oldversion < 2012070600.06) {
        // Drop "deleted" fields
        $table = new xmldb_table('course_completions');
        $field = new xmldb_field('timenotified');
        $field = new xmldb_field('deleted');
        // Conditionally launch drop field deleted from course_completions
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        $field = new xmldb_field('timenotified');
        // Conditionally launch drop field timenotified from course_completions
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012070600.06);
    }
    if ($oldversion < 2012070600.07) {
        $table = new xmldb_table('course_completion_crit_compl');
        $field = new xmldb_field('deleted');
        // Conditionally launch drop field deleted from course_completion_crit_compl
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012070600.07);
    }
    if ($oldversion < 2012070600.08) {
        // Drop unused table "course_completion_notify"
        $table = new xmldb_table('course_completion_notify');
        // Conditionally launch drop table course_completion_notify
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012070600.08);
    }
    if ($oldversion < 2012070600.09) {
        // Define index path (not unique) to be added to context
        $table = new xmldb_table('context');
        $index = new xmldb_index('path', XMLDB_INDEX_NOTUNIQUE, array('path'), array('varchar_pattern_ops'));
        // Recreate index with new pattern hint
        if ($DB->get_dbfamily() === 'postgres') {
            if ($dbman->index_exists($table, $index)) {
                $dbman->drop_index($table, $index);
            }
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012070600.09);
    }
    if ($oldversion < 2012070600.1) {
        // Define index name (unique) to be dropped form role
        $table = new xmldb_table('role');
        $index = new xmldb_index('name', XMLDB_INDEX_UNIQUE, array('name'));
        // Conditionally launch drop index name
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012070600.1);
    }
    if ($oldversion < 2012070600.11) {
        // Define index component-itemid-userid (not unique) to be added to role_assignments
        $table = new xmldb_table('role_assignments');
        $index = new xmldb_index('component-itemid-userid', XMLDB_INDEX_NOTUNIQUE, array('component', 'itemid', 'userid'));
        // Conditionally launch add index component-itemid-userid
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012070600.11);
    }
    if ($oldversion < 2012071900.01) {
        // Cleanup after simpeltests tool
        capabilities_cleanup('tool_unittest');
        unset_all_config_for_plugin('tool_unittest');
        upgrade_main_savepoint(true, 2012071900.01);
    }
    if ($oldversion < 2012072400.0) {
        // Remove obsolete xhtml strict setting - use THEME->doctype in theme config if necessary,
        // see theme_config->doctype in lib/outputlib.php for more details.
        unset_config('xmlstrictheaders');
        upgrade_main_savepoint(true, 2012072400.0);
    }
    if ($oldversion < 2012072401.0) {
        // Saves orphaned questions from the Dark Side
        upgrade_save_orphaned_questions();
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012072401.0);
    }
    if ($oldversion < 2012072600.01) {
        // Handle events with empty eventtype //MDL-32827
        $DB->set_field('event', 'eventtype', 'site', array('eventtype' => '', 'courseid' => $SITE->id));
        $DB->set_field_select('event', 'eventtype', 'due', "eventtype = '' AND courseid != 0 AND groupid = 0 AND (modulename = 'assignment' OR modulename = 'assign')");
        $DB->set_field_select('event', 'eventtype', 'course', "eventtype = '' AND courseid != 0 AND groupid = 0");
        $DB->set_field_select('event', 'eventtype', 'group', "eventtype = '' AND groupid != 0");
        $DB->set_field_select('event', 'eventtype', 'user', "eventtype = '' AND userid != 0");
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012072600.01);
    }
    if ($oldversion < 2012080200.02) {
        // Drop obsolete question upgrade field that should have been added to the install.xml.
        $table = new xmldb_table('question');
        $field = new xmldb_field('oldquestiontextformat', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0');
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        upgrade_main_savepoint(true, 2012080200.02);
    }
    if ($oldversion < 2012081400.01) {
        // Move the ability to disable blogs to its own setting MDL-25012.
        if (isset($CFG->bloglevel)) {
            // Only change settings if existing setting was set.
            if (empty($CFG->bloglevel)) {
                set_config('enableblogs', 0);
                // Now set the bloglevel to a valid setting as the disabled setting has been removed.
                // This prevents confusing results when users enable the blog system in future.
                set_config('bloglevel', BLOG_USER_LEVEL);
            } else {
                set_config('enableblogs', 1);
            }
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012081400.01);
    }
    if ($oldversion < 2012081600.01) {
        // Delete removed setting - Google Maps API V2 will not work in 2013.
        unset_config('googlemapkey');
        upgrade_main_savepoint(true, 2012081600.01);
    }
    if ($oldversion < 2012082300.01) {
        // Add more custom enrol fields.
        $table = new xmldb_table('enrol');
        $field = new xmldb_field('customint5', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'customint4');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('customint6', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'customint5');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('customint7', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'customint6');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('customint8', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'customint7');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('customchar3', XMLDB_TYPE_CHAR, '1333', null, null, null, null, 'customchar2');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('customtext3', XMLDB_TYPE_TEXT, null, null, null, null, null, 'customtext2');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('customtext4', XMLDB_TYPE_TEXT, null, null, null, null, null, 'customtext3');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2012082300.01);
    }
    if ($oldversion < 2012082300.02) {
        // Define field component to be added to groups_members
        $table = new xmldb_table('groups_members');
        $field = new xmldb_field('component', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null, 'timeadded');
        // Conditionally launch add field component
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Define field itemid to be added to groups_members
        $field = new xmldb_field('itemid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'component');
        // Conditionally launch add field itemid
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012082300.02);
    }
    if ($oldversion < 2012090500.0) {
        $subquery = 'SELECT b.id FROM {blog_external} b where b.id = ' . $DB->sql_cast_char2int('{post}.content', true);
        $sql = 'DELETE FROM {post}
                      WHERE {post}.module = \'blog_external\'
                            AND NOT EXISTS (' . $subquery . ')
                            AND ' . $DB->sql_isnotempty('post', 'uniquehash', false, false);
        $DB->execute($sql);
        upgrade_main_savepoint(true, 2012090500.0);
    }
    if ($oldversion < 2012090700.01) {
        // Add a category field in the course_request table
        $table = new xmldb_table('course_request');
        $field = new xmldb_field('category', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, 0, 'summaryformat');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2012090700.01);
    }
    if ($oldversion < 2012091700.0) {
        // Dropping screenreader field from user.
        $table = new xmldb_table('user');
        $field = new xmldb_field('screenreader');
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2012091700.0);
    }
    if ($oldversion < 2012092100.01) {
        // Some folders still have a sortorder set, which is used for main files but is not
        // supported by the folder resource. We reset the value here.
        $sql = 'UPDATE {files} SET sortorder = ? WHERE component = ? AND filearea = ? AND sortorder <> ?';
        $DB->execute($sql, array(0, 'mod_folder', 'content', 0));
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2012092100.01);
    }
    if ($oldversion < 2012092600.0) {
        // Define index idname (unique) to be added to tag
        $table = new xmldb_table('tag');
        $index = new xmldb_index('idname', XMLDB_INDEX_UNIQUE, array('id', 'name'));
        // Conditionally launch add index idname
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012092600.0);
    }
    if ($oldversion < 2012101500.01) {
        // Find all orphaned blog associations that might exist.
        $sql = "SELECT ba.id\n                  FROM {blog_association} ba\n             LEFT JOIN {post} p\n                    ON p.id = ba.blogid\n                 WHERE p.id IS NULL";
        $orphanedrecordids = $DB->get_records_sql($sql);
        // Now delete these associations.
        foreach ($orphanedrecordids as $orphanedrecord) {
            $DB->delete_records('blog_association', array('id' => $orphanedrecord->id));
        }
        upgrade_main_savepoint(true, 2012101500.01);
    }
    if ($oldversion < 2012101800.02) {
        // Renaming backups using previous file naming convention.
        upgrade_rename_old_backup_files_using_shortname();
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2012101800.02);
    }
    if ($oldversion < 2012103001.0) {
        // create new event_subscriptions table
        $table = new xmldb_table('event_subscriptions');
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('url', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('courseid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('groupid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('pollinterval', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('lastupdated', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('name', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012103001.0);
    }
    if ($oldversion < 2012103002.0) {
        // Add subscription field to the event table
        $table = new xmldb_table('event');
        $field = new xmldb_field('subscriptionid', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'timemodified');
        // Conditionally launch add field subscriptionid
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        upgrade_main_savepoint(true, 2012103002.0);
    }
    if ($oldversion < 2012103003.0) {
        // Fix uuid field in event table to match RFC-2445 UID property.
        $table = new xmldb_table('event');
        $field = new xmldb_field('uuid', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null, 'visible');
        // The column already exists, so make sure there are no nulls (crazy mysql).
        $DB->set_field_select('event', 'uuid', '', "uuid IS NULL");
        // Changing precision of field uuid on table event to (255).
        $dbman->change_field_precision($table, $field);
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012103003.0);
    }
    if ($oldversion < 2012110200.0) {
        // Define table course_format_options to be created
        $table = new xmldb_table('course_format_options');
        // Adding fields to table course_format_options
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('courseid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('format', XMLDB_TYPE_CHAR, '21', null, XMLDB_NOTNULL, null, null);
        $table->add_field('sectionid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'format');
        $table->add_field('name', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null);
        $table->add_field('value', XMLDB_TYPE_TEXT, null, null, null, null, null);
        // Adding keys to table course_format_options
        $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 course_format_options
        $table->add_index('formatoption', XMLDB_INDEX_UNIQUE, array('courseid', 'format', 'sectionid', 'name'));
        // Conditionally launch create table for course_format_options
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Changing type of field format on table course to char with length 21
        $table = new xmldb_table('course');
        $field = new xmldb_field('format', XMLDB_TYPE_CHAR, '21', null, XMLDB_NOTNULL, null, 'topics', 'summaryformat');
        // Launch change of type for field format
        $dbman->change_field_type($table, $field);
        // Since structure of 'course' table has changed we need to re-read $SITE from DB.
        $SITE = $DB->get_record('course', array('id' => $SITE->id));
        $COURSE = clone $SITE;
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012110200.0);
    }
    if ($oldversion < 2012110201.0) {
        // Copy fields 'coursedisplay', 'numsections', 'hiddensections' from table {course}
        // to table {course_format_options} as the additional format options
        $fields = array();
        $table = new xmldb_table('course');
        foreach (array('coursedisplay', 'numsections', 'hiddensections') as $fieldname) {
            // first check that fields still exist
            $field = new xmldb_field($fieldname);
            if ($dbman->field_exists($table, $field)) {
                $fields[] = $fieldname;
            }
        }
        if (!empty($fields)) {
            $transaction = $DB->start_delegated_transaction();
            $rs = $DB->get_recordset_sql('SELECT id, format, ' . join(',', $fields) . '
                FROM {course}
                WHERE format <> ? AND format <> ?', array('scorm', 'social'));
            // (do not copy fields from scrom and social formats, we already know that they are not used)
            foreach ($rs as $rec) {
                foreach ($fields as $field) {
                    try {
                        $DB->insert_record('course_format_options', array('courseid' => $rec->id, 'format' => $rec->format, 'sectionid' => 0, 'name' => $field, 'value' => $rec->{$field}));
                    } catch (dml_exception $e) {
                        // index 'courseid,format,sectionid,name' violation
                        // continue; the entry in course_format_options already exists, use it
                    }
                }
            }
            $rs->close();
            $transaction->allow_commit();
            // Drop fields from table course
            foreach ($fields as $fieldname) {
                $field = new xmldb_field($fieldname);
                $dbman->drop_field($table, $field);
            }
        }
        // Since structure of 'course' table has changed we need to re-read $SITE from DB.
        $SITE = $DB->get_record('course', array('id' => $SITE->id));
        $COURSE = clone $SITE;
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012110201.0);
    }
    if ($oldversion < 2012110700.01) {
        // Define field caller_component to be added to portfolio_log.
        $table = new xmldb_table('portfolio_log');
        $field = new xmldb_field('caller_component', XMLDB_TYPE_CHAR, '255', null, null, null, null, 'caller_file');
        // Conditionally launch add field caller_component.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2012110700.01);
    }
    if ($oldversion < 2012111200.0) {
        // Define table temp_enroled_template to be created
        $table = new xmldb_table('temp_enroled_template');
        // Adding fields to table temp_enroled_template
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('courseid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('roleid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table temp_enroled_template
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table temp_enroled_template
        $table->add_index('userid', XMLDB_INDEX_NOTUNIQUE, array('userid'));
        $table->add_index('courseid', XMLDB_INDEX_NOTUNIQUE, array('courseid'));
        $table->add_index('roleid', XMLDB_INDEX_NOTUNIQUE, array('roleid'));
        // Conditionally launch create table for temp_enroled_template
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Define table temp_log_template to be created
        $table = new xmldb_table('temp_log_template');
        // Adding fields to table temp_log_template
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('course', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('action', XMLDB_TYPE_CHAR, '40', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table temp_log_template
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table temp_log_template
        $table->add_index('action', XMLDB_INDEX_NOTUNIQUE, array('action'));
        $table->add_index('course', XMLDB_INDEX_NOTUNIQUE, array('course'));
        $table->add_index('user', XMLDB_INDEX_NOTUNIQUE, array('userid'));
        $table->add_index('usercourseaction', XMLDB_INDEX_NOTUNIQUE, array('userid', 'course', 'action'));
        // Conditionally launch create table for temp_log_template
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012111200.0);
    }
    if ($oldversion < 2012111200.01) {
        // Force the rebuild of the cache of every courses, some cached information could contain wrong icon references.
        $DB->execute('UPDATE {course} set modinfo = ?, sectioncache = ?', array(null, null));
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2012111200.01);
    }
    if ($oldversion < 2012111601.01) {
        // Clea up after old shared memory caching support.
        unset_config('cachetype');
        unset_config('rcache');
        unset_config('rcachettl');
        unset_config('intcachemax');
        unset_config('memcachedhosts');
        unset_config('memcachedpconn');
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2012111601.01);
    }
    if ($oldversion < 2012112100.0) {
        // Define field eventtype to be added to event_subscriptions.
        $table = new xmldb_table('event_subscriptions');
        $field = new xmldb_field('eventtype', XMLDB_TYPE_CHAR, '20', null, XMLDB_NOTNULL, null, null, 'userid');
        // Conditionally launch add field eventtype.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2012112100.0);
    }
    // Moodle v2.4.0 release upgrade line
    // Put any upgrade step following this
    if ($oldversion < 2012120300.01) {
        // Make sure site-course has format='site' //MDL-36840
        if ($SITE->format !== 'site') {
            $DB->set_field('course', 'format', 'site', array('id' => $SITE->id));
            $SITE->format = 'site';
            $COURSE->format = 'site';
        }
        // Main savepoint reached
        upgrade_main_savepoint(true, 2012120300.01);
    }
    if ($oldversion < 2012120300.04) {
        // Remove "_utf8" suffix from all langs in course table.
        $langs = $DB->get_records_sql("SELECT DISTINCT lang FROM {course} WHERE lang LIKE ?", array('%_utf8'));
        foreach ($langs as $lang => $unused) {
            $newlang = str_replace('_utf8', '', $lang);
            $sql = "UPDATE {course} SET lang = :newlang WHERE lang = :lang";
            $DB->execute($sql, array('newlang' => $newlang, 'lang' => $lang));
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2012120300.04);
    }
    if ($oldversion < 2012123000.0) {
        // Purge removed module filters and all their settings.
        $tables = array('filter_active', 'filter_config');
        foreach ($tables as $table) {
            $DB->delete_records_select($table, "filter LIKE 'mod/%'");
            $filters = $DB->get_records_sql("SELECT DISTINCT filter FROM {{$table}} WHERE filter LIKE 'filter/%'");
            foreach ($filters as $filter) {
                $DB->set_field($table, 'filter', substr($filter->filter, 7), array('filter' => $filter->filter));
            }
        }
        $configs = array('stringfilters', 'filterall');
        foreach ($configs as $config) {
            if ($filters = get_config(null, $config)) {
                $filters = explode(',', $filters);
                $newfilters = array();
                foreach ($filters as $filter) {
                    if (strpos($filter, '/') === false) {
                        $newfilters[] = $filter;
                    } else {
                        if (strpos($filter, 'filter/') === 0) {
                            $newfilters[] = substr($filter, 7);
                        }
                    }
                }
                $filters = implode(',', $newfilters);
                set_config($config, $filters);
            }
        }
        unset($tables);
        unset($table);
        unset($configs);
        unset($newfilters);
        unset($filters);
        unset($filter);
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2012123000.0);
    }
    if ($oldversion < 2013021100.01) {
        // Make sure there are no bogus nulls in old MySQL tables.
        $DB->set_field_select('user', 'password', '', "password IS NULL");
        // Changing precision of field password on table user to (255).
        $table = new xmldb_table('user');
        $field = new xmldb_field('password', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null, 'username');
        // Launch change of precision for field password.
        $dbman->change_field_precision($table, $field);
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013021100.01);
    }
    if ($oldversion < 2013021800.0) {
        // Add the site identifier to the cache config's file.
        $siteidentifier = $DB->get_field('config', 'value', array('name' => 'siteidentifier'));
        cache_helper::update_site_identifier($siteidentifier);
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013021800.0);
    }
    if ($oldversion < 2013021801.0) {
        // Fixing possible wrong MIME types for SMART Notebook files.
        $extensions = array('%.gallery', '%.galleryitem', '%.gallerycollection', '%.nbk', '%.notebook', '%.xbk');
        $select = $DB->sql_like('filename', '?', false);
        foreach ($extensions as $extension) {
            $DB->set_field_select('files', 'mimetype', 'application/x-smarttech-notebook', $select, array($extension));
        }
        upgrade_main_savepoint(true, 2013021801.0);
    }
    if ($oldversion < 2013021801.01) {
        // This upgrade step is re-written under MDL-38228 (see below).
        /*
        // Retrieve the list of course_sections as a recordset to save memory
        $coursesections = $DB->get_recordset('course_sections', null, 'course, id', 'id, course, sequence');
        foreach ($coursesections as $coursesection) {
            // Retrieve all of the actual modules in this course and section combination to reduce DB calls
            $actualsectionmodules = $DB->get_records('course_modules',
                    array('course' => $coursesection->course, 'section' => $coursesection->id), '', 'id, section');
        
            // Break out the current sequence so that we can compare it
            $currentsequence = explode(',', $coursesection->sequence);
            $newsequence = array();
        
            // Check each of the modules in the current sequence
            foreach ($currentsequence as $module) {
                if (isset($actualsectionmodules[$module])) {
                    $newsequence[] = $module;
                    // We unset the actualsectionmodules so that we don't get duplicates and that we can add orphaned
                    // modules later
                    unset($actualsectionmodules[$module]);
                }
            }
        
            // Append any modules which have somehow been orphaned
            foreach ($actualsectionmodules as $module) {
                $newsequence[] = $module->id;
            }
        
            // Piece it all back together
            $sequence = implode(',', $newsequence);
        
            // Only update if there have been changes
            if ($sequence !== $coursesection->sequence) {
                $coursesection->sequence = $sequence;
                $DB->update_record('course_sections', $coursesection);
        
                // And clear the sectioncache and modinfo cache - they'll be regenerated on next use
                $course = new stdClass();
                $course->id = $coursesection->course;
                $course->sectioncache = null;
                $course->modinfo = null;
                $DB->update_record('course', $course);
            }
        }
        $coursesections->close();
        */
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013021801.01);
    }
    if ($oldversion < 2013021902.0) {
        // ISO country change: Netherlands Antilles is split into BQ, CW & SX
        // http://www.iso.org/iso/iso_3166-1_newsletter_vi-8_split_of_the_dutch_antilles_final-en.pdf
        $sql = "UPDATE {user} SET country = '' WHERE country = ?";
        $DB->execute($sql, array('AN'));
        upgrade_main_savepoint(true, 2013021902.0);
    }
    if ($oldversion < 2013022600.0) {
        // Delete entries regarding invalid 'interests' option which breaks course.
        $DB->delete_records('course_sections_avail_fields', array('userfield' => 'interests'));
        $DB->delete_records('course_modules_avail_fields', array('userfield' => 'interests'));
        // Clear course cache (will be rebuilt on first visit) in case of changes to these.
        $DB->execute('UPDATE {course} set modinfo = ?, sectioncache = ?', array(null, null));
        upgrade_main_savepoint(true, 2013022600.0);
    }
    // Add index to field "timemodified" for grade_grades_history table.
    if ($oldversion < 2013030400.0) {
        $table = new xmldb_table('grade_grades_history');
        $field = new xmldb_field('timemodified');
        if ($dbman->field_exists($table, $field)) {
            $index = new xmldb_index('timemodified', XMLDB_INDEX_NOTUNIQUE, array('timemodified'));
            if (!$dbman->index_exists($table, $index)) {
                $dbman->add_index($table, $index);
            }
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013030400.0);
    }
    if ($oldversion < 2013030400.02) {
        // Cleanup qformat blackboard settings.
        unset_all_config_for_plugin('qformat_blackboard');
        upgrade_main_savepoint(true, 2013030400.02);
    }
    // This is checking to see if the site has been running a specific version with a bug in it
    // because this upgrade step is slow and is only needed if the site has been running with the affected versions.
    if ($oldversion >= 2012062504.08 && $oldversion < 2012062504.13) {
        // This upgrade step is re-written under MDL-38228 (see below).
        /*
                // Retrieve the list of course_sections as a recordset to save memory.
                // This is to fix a regression caused by MDL-37939.
                // In this case the upgrade step is fixing records where:
                // The data in course_sections.sequence contains the correct module id
                // The section field for on the course modules table may have been updated to point to the incorrect id.
        
                // This query is looking for sections where the sequence is not in sync with the course_modules table.
                // The syntax for the like query is looking for a value in a comma separated list.
                // It adds a comma to either site of the list and then searches for LIKE '%,id,%'.
                $sequenceconcat = $DB->sql_concat("','", 's.sequence', "','");
                $moduleconcat = $DB->sql_concat("'%,'", 'cm.id', "',%'");
                $sql = 'SELECT s2.id, s2.course, s2.sequence
               FROM {course_sections} s2
               JOIN(
                   SELECT DISTINCT s.id
                   FROM
                   {course_modules} cm
                   JOIN {course_sections} s
                   ON
                       cm.course = s.course
                   WHERE cm.section != s.id AND ' . $sequenceconcat . ' LIKE ' . $moduleconcat . '
               ) d
               ON s2.id = d.id';
                $coursesections = $DB->get_recordset_sql($sql);
        
                foreach ($coursesections as $coursesection) {
           // Retrieve all of the actual modules in this course and section combination to reduce DB calls.
           $actualsectionmodules = $DB->get_records('course_modules',
                   array('course' => $coursesection->course, 'section' => $coursesection->id), '', 'id, section');
        
           // Break out the current sequence so that we can compare it.
           $currentsequence = explode(',', $coursesection->sequence);
           $orphanlist = array();
        
           // Check each of the modules in the current sequence.
           foreach ($currentsequence as $cmid) {
               if (!empty($cmid) && !isset($actualsectionmodules[$cmid])) {
                   $orphanlist[] = $cmid;
               }
           }
        
           if (!empty($orphanlist)) {
               list($sql, $params) = $DB->get_in_or_equal($orphanlist, SQL_PARAMS_NAMED);
               $sql = "id $sql";
        
               $DB->set_field_select('course_modules', 'section', $coursesection->id, $sql, $params);
        
               // And clear the sectioncache and modinfo cache - they'll be regenerated on next use.
               $course = new stdClass();
               $course->id = $coursesection->course;
               $course->sectioncache = null;
               $course->modinfo = null;
               $DB->update_record('course', $course);
           }
                }
                $coursesections->close();
        
                // No savepoint needed for this change.
        */
    }
    if ($oldversion < 2013032200.01) {
        // GD is now always available
        set_config('gdversion', 2);
        upgrade_main_savepoint(true, 2013032200.01);
    }
    if ($oldversion < 2013032600.03) {
        // Fixing possible wrong MIME type for MIME HTML (MHTML) files.
        $extensions = array('%.mht', '%.mhtml');
        $select = $DB->sql_like('filename', '?', false);
        foreach ($extensions as $extension) {
            $DB->set_field_select('files', 'mimetype', 'message/rfc822', $select, array($extension));
        }
        upgrade_main_savepoint(true, 2013032600.03);
    }
    if ($oldversion < 2013032600.04) {
        // MDL-31983 broke the quiz version number. Fix it.
        $DB->set_field('modules', 'version', '2013021500', array('name' => 'quiz', 'version' => '2013310100'));
        upgrade_main_savepoint(true, 2013032600.04);
    }
    if ($oldversion < 2013040200.0) {
        // Add openbadges tables.
        // Define table 'badge' to be created.
        $table = new xmldb_table('badge');
        // Adding fields to table 'badge'.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null, null);
        $table->add_field('name', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null, 'id');
        $table->add_field('description', XMLDB_TYPE_TEXT, null, null, null, null, null, 'name');
        $table->add_field('image', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'description');
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'image');
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'timecreated');
        $table->add_field('usercreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'timemodified');
        $table->add_field('usermodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'usercreated');
        $table->add_field('issuername', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null, 'usermodified');
        $table->add_field('issuerurl', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null, 'issuername');
        $table->add_field('issuercontact', XMLDB_TYPE_CHAR, '255', null, null, null, null, 'issuerurl');
        $table->add_field('expiredate', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'issuercontact');
        $table->add_field('expireperiod', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'expiredate');
        $table->add_field('type', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '1', 'expireperiod');
        $table->add_field('courseid', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'type');
        $table->add_field('message', XMLDB_TYPE_TEXT, null, null, XMLDB_NOTNULL, null, null, 'courseid');
        $table->add_field('messagesubject', XMLDB_TYPE_TEXT, null, null, XMLDB_NOTNULL, null, null, 'message');
        $table->add_field('attachment', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '1', 'messagesubject');
        $table->add_field('notification', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '1', 'attachment');
        $table->add_field('status', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'notification');
        $table->add_field('nextcron', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'status');
        // Adding keys to table 'badge'.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('fk_courseid', XMLDB_KEY_FOREIGN, array('courseid'), 'course', array('id'));
        $table->add_key('fk_usermodified', XMLDB_KEY_FOREIGN, array('usermodified'), 'user', array('id'));
        $table->add_key('fk_usercreated', XMLDB_KEY_FOREIGN, array('usercreated'), 'user', array('id'));
        // Adding indexes to table 'badge'.
        $table->add_index('type', XMLDB_INDEX_NOTUNIQUE, array('type'));
        // Conditionally launch create table for 'badge'.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Define table 'badge_criteria' to be created.
        $table = new xmldb_table('badge_criteria');
        // Adding fields to table 'badge_criteria'.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null, null);
        $table->add_field('badgeid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'id');
        $table->add_field('criteriatype', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'badgeid');
        $table->add_field('method', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '1', 'criteriatype');
        // Adding keys to table 'badge_criteria'.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('fk_badgeid', XMLDB_KEY_FOREIGN, array('badgeid'), 'badge', array('id'));
        // Adding indexes to table 'badge_criteria'.
        $table->add_index('criteriatype', XMLDB_INDEX_NOTUNIQUE, array('criteriatype'));
        $table->add_index('badgecriteriatype', XMLDB_INDEX_UNIQUE, array('badgeid', 'criteriatype'));
        // Conditionally launch create table for 'badge_criteria'.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Define table 'badge_criteria_param' to be created.
        $table = new xmldb_table('badge_criteria_param');
        // Adding fields to table 'badge_criteria_param'.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null, null);
        $table->add_field('critid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'id');
        $table->add_field('name', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null, 'critid');
        $table->add_field('value', XMLDB_TYPE_CHAR, '255', null, null, null, null, 'name');
        // Adding keys to table 'badge_criteria_param'.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('fk_critid', XMLDB_KEY_FOREIGN, array('critid'), 'badge_criteria', array('id'));
        // Conditionally launch create table for 'badge_criteria_param'.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Define table 'badge_issued' to be created.
        $table = new xmldb_table('badge_issued');
        // Adding fields to table 'badge_issued'.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null, null);
        $table->add_field('badgeid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'id');
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'badgeid');
        $table->add_field('uniquehash', XMLDB_TYPE_TEXT, null, null, XMLDB_NOTNULL, null, null, 'userid');
        $table->add_field('dateissued', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'uniquehash');
        $table->add_field('dateexpire', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'dateissued');
        $table->add_field('visible', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'dateexpire');
        $table->add_field('issuernotified', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'visible');
        // Adding keys to table 'badge_issued'.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('fk_badgeid', XMLDB_KEY_FOREIGN, array('badgeid'), 'badge', array('id'));
        $table->add_key('fk_userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        $table->add_index('badgeuser', XMLDB_INDEX_UNIQUE, array('badgeid', 'userid'));
        // Conditionally launch create table for 'badge_issued'.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Define table 'badge_criteria_met' to be created.
        $table = new xmldb_table('badge_criteria_met');
        // Adding fields to table 'badge_criteria_met'.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null, null);
        $table->add_field('issuedid', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'id');
        $table->add_field('critid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'issuedid');
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'critid');
        $table->add_field('datemet', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'userid');
        // Adding keys to table 'badge_criteria_met'
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('fk_critid', XMLDB_KEY_FOREIGN, array('critid'), 'badge_criteria', array('id'));
        $table->add_key('fk_userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        $table->add_key('fk_issuedid', XMLDB_KEY_FOREIGN, array('issuedid'), 'badge_issued', array('id'));
        // Conditionally launch create table for 'badge_criteria_met'.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Define table 'badge_manual_award' to be created.
        $table = new xmldb_table('badge_manual_award');
        // Adding fields to table 'badge_manual_award'.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null, null);
        $table->add_field('badgeid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'id');
        $table->add_field('recipientid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'badgeid');
        $table->add_field('issuerid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'recipientid');
        $table->add_field('issuerrole', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'issuerid');
        $table->add_field('datemet', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'issuerrole');
        // Adding keys to table 'badge_manual_award'.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('fk_badgeid', XMLDB_KEY_FOREIGN, array('badgeid'), 'badge', array('id'));
        $table->add_key('fk_recipientid', XMLDB_KEY_FOREIGN, array('recipientid'), 'user', array('id'));
        $table->add_key('fk_issuerid', XMLDB_KEY_FOREIGN, array('issuerid'), 'user', array('id'));
        $table->add_key('fk_issuerrole', XMLDB_KEY_FOREIGN, array('issuerrole'), 'role', array('id'));
        // Conditionally launch create table for 'badge_manual_award'.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Define table 'badge_backpack' to be created.
        $table = new xmldb_table('badge_backpack');
        // Adding fields to table 'badge_backpack'.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'id');
        $table->add_field('email', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null, 'userid');
        $table->add_field('backpackurl', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null, 'email');
        $table->add_field('backpackuid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'backpackurl');
        $table->add_field('backpackgid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'backpackuid');
        $table->add_field('autosync', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'backpackgid');
        $table->add_field('password', XMLDB_TYPE_CHAR, '50', null, null, null, null, 'autosync');
        // Adding keys to table 'badge_backpack'.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('fk_userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        // Conditionally launch create table for 'badge_backpack'.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013040200.0);
    }
    if ($oldversion < 2013040201.0) {
        // Convert name field in event table to text type as RFC-2445 doesn't have any limitation on it.
        $table = new xmldb_table('event');
        $field = new xmldb_field('name', XMLDB_TYPE_TEXT, null, null, XMLDB_NOTNULL, null, null);
        if ($dbman->field_exists($table, $field)) {
            $dbman->change_field_type($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013040201.0);
    }
    if ($oldversion < 2013040300.01) {
        // Define field completionstartonenrol to be dropped from course.
        $table = new xmldb_table('course');
        $field = new xmldb_field('completionstartonenrol');
        // Conditionally launch drop field completionstartonenrol.
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Since structure of 'course' table has changed we need to re-read $SITE from DB.
        $SITE = $DB->get_record('course', array('id' => $SITE->id));
        $COURSE = clone $SITE;
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013040300.01);
    }
    if ($oldversion < 2013041200.0) {
        // MDL-29877 Some bad restores created grade items with no category information.
        $sql = "UPDATE {grade_items}\n                   SET categoryid = courseid\n                 WHERE itemtype <> 'course' and itemtype <> 'category'\n                       AND categoryid IS NULL";
        $DB->execute($sql);
        upgrade_main_savepoint(true, 2013041200.0);
    }
    if ($oldversion < 2013041600.0) {
        // Copy constants from /course/lib.php instead of including the whole library:
        $c = array('FRONTPAGENEWS' => 0, 'FRONTPAGECOURSELIST' => 1, 'FRONTPAGECATEGORYNAMES' => 2, 'FRONTPAGETOPICONLY' => 3, 'FRONTPAGECATEGORYCOMBO' => 4, 'FRONTPAGEENROLLEDCOURSELIST' => 5, 'FRONTPAGEALLCOURSELIST' => 6, 'FRONTPAGECOURSESEARCH' => 7);
        // Update frontpage settings $CFG->frontpage and $CFG->frontpageloggedin. In 2.4 there was too much of hidden logic about them.
        // This script tries to make sure that with the new (more user-friendly) frontpage settings the frontpage looks as similar as possible to what it was before upgrade.
        $ncourses = $DB->count_records('course');
        foreach (array('frontpage', 'frontpageloggedin') as $configkey) {
            if ($frontpage = explode(',', $CFG->{$configkey})) {
                $newfrontpage = array();
                foreach ($frontpage as $v) {
                    switch ($v) {
                        case $c['FRONTPAGENEWS']:
                            // Not related to course listings, leave as it is.
                            $newfrontpage[] = $c['FRONTPAGENEWS'];
                            break;
                        case $c['FRONTPAGECOURSELIST']:
                            if ($configkey === 'frontpageloggedin' && empty($CFG->disablemycourses)) {
                                // In 2.4 unless prohibited in config, the "list of courses" was considered "list of enrolled courses" plus course search box.
                                $newfrontpage[] = $c['FRONTPAGEENROLLEDCOURSELIST'];
                            } else {
                                if ($ncourses <= 200) {
                                    // Still list of courses was only displayed in there were less than 200 courses in system. Otherwise - search box only.
                                    $newfrontpage[] = $c['FRONTPAGEALLCOURSELIST'];
                                    break;
                                    // skip adding search box
                                }
                            }
                            if (!in_array($c['FRONTPAGECOURSESEARCH'], $newfrontpage)) {
                                $newfrontpage[] = $c['FRONTPAGECOURSESEARCH'];
                            }
                            break;
                        case $c['FRONTPAGECATEGORYNAMES']:
                            // In 2.4 search box was displayed automatically after categories list. In 2.5 it is displayed as a separate setting.
                            $newfrontpage[] = $c['FRONTPAGECATEGORYNAMES'];
                            if (!in_array($c['FRONTPAGECOURSESEARCH'], $newfrontpage)) {
                                $newfrontpage[] = $c['FRONTPAGECOURSESEARCH'];
                            }
                            break;
                        case $c['FRONTPAGECATEGORYCOMBO']:
                            $maxcourses = empty($CFG->numcoursesincombo) ? 500 : $CFG->numcoursesincombo;
                            // In 2.4 combo list was not displayed if there are more than $CFG->numcoursesincombo courses in the system.
                            if ($ncourses < $maxcourses) {
                                $newfrontpage[] = $c['FRONTPAGECATEGORYCOMBO'];
                            }
                            if (!in_array($c['FRONTPAGECOURSESEARCH'], $newfrontpage)) {
                                $newfrontpage[] = $c['FRONTPAGECOURSESEARCH'];
                            }
                            break;
                    }
                }
                set_config($configkey, join(',', $newfrontpage));
            }
        }
        // $CFG->numcoursesincombo no longer affects whether the combo list is displayed. Setting is deprecated.
        unset_config('numcoursesincombo');
        upgrade_main_savepoint(true, 2013041600.0);
    }
    if ($oldversion < 2013041601.0) {
        // Create a new 'badge_external' table first.
        // Define table 'badge_external' to be created.
        $table = new xmldb_table('badge_external');
        // Adding fields to table 'badge_external'.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null, null);
        $table->add_field('backpackid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'id');
        $table->add_field('collectionid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'backpackid');
        // Adding keys to table 'badge_external'.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('fk_backpackid', XMLDB_KEY_FOREIGN, array('backpackid'), 'badge_backpack', array('id'));
        // Conditionally launch create table for 'badge_external'.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Perform user data migration.
        $usercollections = $DB->get_records('badge_backpack');
        foreach ($usercollections as $usercollection) {
            $collection = new stdClass();
            $collection->backpackid = $usercollection->id;
            $collection->collectionid = $usercollection->backpackgid;
            $DB->insert_record('badge_external', $collection);
        }
        // Finally, drop the column.
        // Define field backpackgid to be dropped from 'badge_backpack'.
        $table = new xmldb_table('badge_backpack');
        $field = new xmldb_field('backpackgid');
        // Conditionally launch drop field backpackgid.
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013041601.0);
    }
    if ($oldversion < 2013041601.01) {
        // Changing the default of field descriptionformat on table user to 1.
        $table = new xmldb_table('user');
        $field = new xmldb_field('descriptionformat', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '1', 'description');
        // Launch change of default for field descriptionformat.
        $dbman->change_field_default($table, $field);
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013041601.01);
    }
    if ($oldversion < 2013041900.0) {
        require_once $CFG->dirroot . '/cache/locallib.php';
        // The features bin needs updating.
        cache_config_writer::update_default_config_stores();
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013041900.0);
    }
    if ($oldversion < 2013042300.0) {
        // Adding index to unreadmessageid field of message_working table (MDL-34933)
        $table = new xmldb_table('message_working');
        $index = new xmldb_index('unreadmessageid_idx', XMLDB_INDEX_NOTUNIQUE, array('unreadmessageid'));
        // Conditionally launch add index unreadmessageid
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013042300.0);
    }
    // Moodle v2.5.0 release upgrade line.
    // Put any upgrade step following this.
    if ($oldversion < 2013051400.01) {
        // Fix incorrect cc-nc url. Unfortunately the license 'plugins' do
        // not give a mechanism to do this.
        $sql = "UPDATE {license}\n                   SET source = :url, version = :newversion\n                 WHERE shortname = :shortname AND version = :oldversion";
        $params = array('url' => 'http://creativecommons.org/licenses/by-nc/3.0/', 'shortname' => 'cc-nc', 'newversion' => '2013051500', 'oldversion' => '2010033100');
        $DB->execute($sql, $params);
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013051400.01);
    }
    if ($oldversion < 2013061400.01) {
        // Clean up old tokens which haven't been deleted.
        $DB->execute("DELETE FROM {user_private_key} WHERE NOT EXISTS\n                         (SELECT 'x' FROM {user} WHERE deleted = 0 AND id = userid)");
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013061400.01);
    }
    if ($oldversion < 2013061700.0) {
        // MDL-40103: Remove unused template tables from the database.
        // These are now created inline with xmldb_table.
        $tablestocleanup = array('temp_enroled_template', 'temp_log_template', 'backup_files_template', 'backup_ids_template');
        $dbman = $DB->get_manager();
        foreach ($tablestocleanup as $table) {
            $xmltable = new xmldb_table($table);
            if ($dbman->table_exists($xmltable)) {
                $dbman->drop_table($xmltable);
            }
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013061700.0);
    }
    if ($oldversion < 2013070800.0) {
        // Remove orphan repository instances.
        if ($DB->get_dbfamily() === 'mysql') {
            $sql = "DELETE {repository_instances} FROM {repository_instances}\n                    LEFT JOIN {context} ON {context}.id = {repository_instances}.contextid\n                    WHERE {context}.id IS NULL";
        } else {
            $sql = "DELETE FROM {repository_instances}\n                    WHERE NOT EXISTS (\n                        SELECT 'x' FROM {context}\n                        WHERE {context}.id = {repository_instances}.contextid)";
        }
        $DB->execute($sql);
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013070800.0);
    }
    if ($oldversion < 2013070800.01) {
        // Define field lastnamephonetic to be added to user.
        $table = new xmldb_table('user');
        $field = new xmldb_field('lastnamephonetic', XMLDB_TYPE_CHAR, '255', null, null, null, null, 'imagealt');
        $index = new xmldb_index('lastnamephonetic', XMLDB_INDEX_NOTUNIQUE, array('lastnamephonetic'));
        // Conditionally launch add field lastnamephonetic.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
            $dbman->add_index($table, $index);
        }
        // Define field firstnamephonetic to be added to user.
        $table = new xmldb_table('user');
        $field = new xmldb_field('firstnamephonetic', XMLDB_TYPE_CHAR, '255', null, null, null, null, 'lastnamephonetic');
        $index = new xmldb_index('firstnamephonetic', XMLDB_INDEX_NOTUNIQUE, array('firstnamephonetic'));
        // Conditionally launch add field firstnamephonetic.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
            $dbman->add_index($table, $index);
        }
        // Define field alternatename to be added to user.
        $table = new xmldb_table('user');
        $field = new xmldb_field('middlename', XMLDB_TYPE_CHAR, '255', null, null, null, null, 'firstnamephonetic');
        $index = new xmldb_index('middlename', XMLDB_INDEX_NOTUNIQUE, array('middlename'));
        // Conditionally launch add field firstnamephonetic.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
            $dbman->add_index($table, $index);
        }
        // Define field alternatename to be added to user.
        $table = new xmldb_table('user');
        $field = new xmldb_field('alternatename', XMLDB_TYPE_CHAR, '255', null, null, null, null, 'middlename');
        $index = new xmldb_index('alternatename', XMLDB_INDEX_NOTUNIQUE, array('alternatename'));
        // Conditionally launch add field alternatename.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013070800.01);
    }
    if ($oldversion < 2013071500.01) {
        // The enrol_authorize plugin has been removed, if there are no records
        // and no plugin files then remove the plugin data.
        $enrolauthorize = new xmldb_table('enrol_authorize');
        $enrolauthorizerefunds = new xmldb_table('enrol_authorize_refunds');
        if (!file_exists($CFG->dirroot . '/enrol/authorize/version.php') && $dbman->table_exists($enrolauthorize) && $dbman->table_exists($enrolauthorizerefunds)) {
            $enrolauthorizecount = $DB->count_records('enrol_authorize');
            $enrolauthorizerefundcount = $DB->count_records('enrol_authorize_refunds');
            if (empty($enrolauthorizecount) && empty($enrolauthorizerefundcount)) {
                // Drop the database tables.
                $dbman->drop_table($enrolauthorize);
                $dbman->drop_table($enrolauthorizerefunds);
                // Drop the message provider and associated data manually.
                $DB->delete_records('message_providers', array('component' => 'enrol_authorize'));
                $DB->delete_records_select('config_plugins', "plugin = 'message' AND " . $DB->sql_like('name', '?', false), array("%_provider_enrol_authorize_%"));
                $DB->delete_records_select('user_preferences', $DB->sql_like('name', '?', false), array("message_provider_enrol_authorize_%"));
                // Remove capabilities.
                capabilities_cleanup('enrol_authorize');
                // Remove all other associated config.
                unset_all_config_for_plugin('enrol_authorize');
            }
        }
        upgrade_main_savepoint(true, 2013071500.01);
    }
    if ($oldversion < 2013071500.02) {
        // Define field attachment to be dropped from badge.
        $table = new xmldb_table('badge');
        $field = new xmldb_field('image');
        // Conditionally launch drop field eventtype.
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        upgrade_main_savepoint(true, 2013071500.02);
    }
    if ($oldversion < 2013072600.01) {
        upgrade_mssql_nvarcharmax();
        upgrade_mssql_varbinarymax();
        upgrade_main_savepoint(true, 2013072600.01);
    }
    if ($oldversion < 2013081200.0) {
        // Define field uploadfiles to be added to external_services.
        $table = new xmldb_table('external_services');
        $field = new xmldb_field('uploadfiles', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'downloadfiles');
        // Conditionally launch add field uploadfiles.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013081200.0);
    }
    if ($oldversion < 2013082300.01) {
        // Define the table 'backup_logs' and the field 'message' which we will be changing from a char to a text field.
        $table = new xmldb_table('backup_logs');
        $field = new xmldb_field('message', XMLDB_TYPE_TEXT, null, null, XMLDB_NOTNULL, null, null, 'loglevel');
        // Perform the change.
        $dbman->change_field_type($table, $field);
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013082300.01);
    }
    // Convert SCORM course format courses to singleactivity.
    if ($oldversion < 2013082700.0) {
        // First set relevant singleactivity settings.
        $formatoptions = new stdClass();
        $formatoptions->format = 'singleactivity';
        $formatoptions->sectionid = 0;
        $formatoptions->name = 'activitytype';
        $formatoptions->value = 'scorm';
        $courses = $DB->get_recordset('course', array('format' => 'scorm'), 'id');
        foreach ($courses as $course) {
            $formatoptions->courseid = $course->id;
            $DB->insert_record('course_format_options', $formatoptions);
        }
        $courses->close();
        // Now update course format for these courses.
        $sql = "UPDATE {course}\n                   SET format = 'singleactivity', modinfo = '', sectioncache = ''\n                 WHERE format = 'scorm'";
        $DB->execute($sql);
        upgrade_main_savepoint(true, 2013082700.0);
    }
    if ($oldversion < 2013090500.01) {
        // Define field calendartype to be added to course.
        $table = new xmldb_table('course');
        $field = new xmldb_field('calendartype', XMLDB_TYPE_CHAR, '30', null, XMLDB_NOTNULL, null, null);
        // Conditionally launch add field calendartype.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Since structure of 'course' table has changed we need to re-read $SITE from DB.
        $SITE = $DB->get_record('course', array('id' => $SITE->id));
        $COURSE = clone $SITE;
        // Define field calendartype to be added to user.
        $table = new xmldb_table('user');
        $field = new xmldb_field('calendartype', XMLDB_TYPE_CHAR, '30', null, XMLDB_NOTNULL, null, 'gregorian');
        // Conditionally launch add field calendartype.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013090500.01);
    }
    if ($oldversion < 2013091000.02) {
        // Define field cacherev to be added to course.
        $table = new xmldb_table('course');
        $field = new xmldb_field('cacherev', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'completionnotify');
        // Conditionally launch add field cacherev.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Since structure of 'course' table has changed we need to re-read $SITE from DB.
        $SITE = $DB->get_record('course', array('id' => $SITE->id));
        $COURSE = clone $SITE;
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013091000.02);
    }
    if ($oldversion < 2013091000.03) {
        // Define field modinfo to be dropped from course.
        $table = new xmldb_table('course');
        $field = new xmldb_field('modinfo');
        // Conditionally launch drop field modinfo.
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Define field sectioncache to be dropped from course.
        $field = new xmldb_field('sectioncache');
        // Conditionally launch drop field sectioncache.
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Since structure of 'course' table has changed we need to re-read $SITE from DB.
        $SITE = $DB->get_record('course', array('id' => $SITE->id));
        $COURSE = clone $SITE;
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013091000.03);
    }
    if ($oldversion < 2013091300.01) {
        $table = new xmldb_table('user');
        // Changing precision of field institution on table user to (255).
        $field = new xmldb_field('institution', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null, 'phone2');
        // Launch change of precision for field institution.
        $dbman->change_field_precision($table, $field);
        // Changing precision of field department on table user to (255).
        $field = new xmldb_field('department', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null, 'institution');
        // Launch change of precision for field department.
        $dbman->change_field_precision($table, $field);
        // Changing precision of field address on table user to (255).
        $field = new xmldb_field('address', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null, 'department');
        // Launch change of precision for field address.
        $dbman->change_field_precision($table, $field);
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013091300.01);
    }
    if ($oldversion < 2013092000.01) {
        // Define table question_statistics to be created.
        $table = new xmldb_table('question_statistics');
        // Adding fields to table question_statistics.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('hashcode', XMLDB_TYPE_CHAR, '40', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('questionid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('slot', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('subquestion', XMLDB_TYPE_INTEGER, '4', null, XMLDB_NOTNULL, null, null);
        $table->add_field('s', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('effectiveweight', XMLDB_TYPE_NUMBER, '15, 5', null, null, null, null);
        $table->add_field('negcovar', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('discriminationindex', XMLDB_TYPE_NUMBER, '15, 5', null, null, null, null);
        $table->add_field('discriminativeefficiency', XMLDB_TYPE_NUMBER, '15, 5', null, null, null, null);
        $table->add_field('sd', XMLDB_TYPE_NUMBER, '15, 10', null, null, null, null);
        $table->add_field('facility', XMLDB_TYPE_NUMBER, '15, 10', null, null, null, null);
        $table->add_field('subquestions', XMLDB_TYPE_TEXT, null, null, null, null, null);
        $table->add_field('maxmark', XMLDB_TYPE_NUMBER, '12, 7', null, null, null, null);
        $table->add_field('positions', XMLDB_TYPE_TEXT, null, null, null, null, null);
        $table->add_field('randomguessscore', XMLDB_TYPE_NUMBER, '12, 7', null, null, null, null);
        // Adding keys to table question_statistics.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Conditionally launch create table for question_statistics.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Define table question_response_analysis to be created.
        $table = new xmldb_table('question_response_analysis');
        // Adding fields to table question_response_analysis.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('hashcode', XMLDB_TYPE_CHAR, '40', null, XMLDB_NOTNULL, null, null);
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('questionid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('subqid', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null);
        $table->add_field('aid', XMLDB_TYPE_CHAR, '100', null, null, null, null);
        $table->add_field('response', XMLDB_TYPE_TEXT, null, null, null, null, null);
        $table->add_field('rcount', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('credit', XMLDB_TYPE_NUMBER, '15, 5', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table question_response_analysis.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Conditionally launch create table for question_response_analysis.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013092000.01);
    }
    if ($oldversion < 2013092001.01) {
        // Force uninstall of deleted tool.
        if (!file_exists("{$CFG->dirroot}/{$CFG->admin}/tool/bloglevelupgrade")) {
            // Remove capabilities.
            capabilities_cleanup('tool_bloglevelupgrade');
            // Remove all other associated config.
            unset_all_config_for_plugin('tool_bloglevelupgrade');
        }
        upgrade_main_savepoint(true, 2013092001.01);
    }
    if ($oldversion < 2013092001.02) {
        // Define field version to be dropped from modules.
        $table = new xmldb_table('modules');
        $field = new xmldb_field('version');
        // Conditionally launch drop field version.
        if ($dbman->field_exists($table, $field)) {
            // Migrate all plugin version info to config_plugins table.
            $modules = $DB->get_records('modules');
            foreach ($modules as $module) {
                set_config('version', $module->version, 'mod_' . $module->name);
            }
            unset($modules);
            $dbman->drop_field($table, $field);
        }
        // Define field version to be dropped from block.
        $table = new xmldb_table('block');
        $field = new xmldb_field('version');
        // Conditionally launch drop field version.
        if ($dbman->field_exists($table, $field)) {
            $blocks = $DB->get_records('block');
            foreach ($blocks as $block) {
                set_config('version', $block->version, 'block_' . $block->name);
            }
            unset($blocks);
            $dbman->drop_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013092001.02);
    }
    if ($oldversion < 2013092700.01) {
        $table = new xmldb_table('files');
        // Define field referencelastsync to be dropped from files.
        $field = new xmldb_field('referencelastsync');
        // Conditionally launch drop field referencelastsync.
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Define field referencelifetime to be dropped from files.
        $field = new xmldb_field('referencelifetime');
        // Conditionally launch drop field referencelifetime.
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013092700.01);
    }
    if ($oldversion < 2013100400.01) {
        // Add user_devices core table.
        // Define field id to be added to user_devices.
        $table = new xmldb_table('user_devices');
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'id');
        $table->add_field('appid', XMLDB_TYPE_CHAR, '128', null, XMLDB_NOTNULL, null, null, 'userid');
        $table->add_field('name', XMLDB_TYPE_CHAR, '32', null, XMLDB_NOTNULL, null, null, 'appid');
        $table->add_field('model', XMLDB_TYPE_CHAR, '32', null, XMLDB_NOTNULL, null, null, 'name');
        $table->add_field('platform', XMLDB_TYPE_CHAR, '32', null, XMLDB_NOTNULL, null, null, 'model');
        $table->add_field('version', XMLDB_TYPE_CHAR, '32', null, XMLDB_NOTNULL, null, null, 'platform');
        $table->add_field('pushid', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null, 'version');
        $table->add_field('uuid', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null, 'pushid');
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'uuid');
        $table->add_field('timemodified', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, 'timecreated');
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('pushid-userid', XMLDB_KEY_UNIQUE, array('pushid', 'userid'));
        $table->add_key('pushid-platform', XMLDB_KEY_UNIQUE, array('pushid', 'platform'));
        $table->add_key('userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013100400.01);
    }
    if ($oldversion < 2013100800.0) {
        // Define field maxfraction to be added to question_attempts.
        $table = new xmldb_table('question_attempts');
        $field = new xmldb_field('maxfraction', XMLDB_TYPE_NUMBER, '12, 7', null, XMLDB_NOTNULL, null, '1', 'minfraction');
        // Conditionally launch add field maxfraction.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013100800.0);
    }
    if ($oldversion < 2013100800.01) {
        // Create a new 'user_password_resets' table.
        $table = new xmldb_table('user_password_resets');
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, null);
        $table->add_field('timerequested', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null, null);
        $table->add_field('timererequested', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, 0, null);
        $table->add_field('token', XMLDB_TYPE_CHAR, '32', null, XMLDB_NOTNULL, null, null, null);
        // Adding keys to table.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('fk_userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        // Conditionally launch create table.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        upgrade_main_savepoint(true, 2013100800.01);
    }
    if ($oldversion < 2013100800.02) {
        $sql = "INSERT INTO {user_preferences}(userid, name, value)\n                SELECT id, 'htmleditor', 'textarea' FROM {user} u where u.htmleditor = 0";
        $DB->execute($sql);
        // Define field htmleditor to be dropped from user
        $table = new xmldb_table('user');
        $field = new xmldb_field('htmleditor');
        // Conditionally launch drop field requested
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013100800.02);
    }
    if ($oldversion < 2013100900.0) {
        // Define field lifetime to be dropped from files_reference.
        $table = new xmldb_table('files_reference');
        $field = new xmldb_field('lifetime');
        // Conditionally launch drop field lifetime.
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013100900.0);
    }
    if ($oldversion < 2013100901.0) {
        // Fixing possible wrong MIME type for Java Network Launch Protocol (JNLP) files.
        $select = $DB->sql_like('filename', '?', false);
        $DB->set_field_select('files', 'mimetype', 'application/x-java-jnlp-file', $select, array('%.jnlp'));
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013100901.0);
    }
    if ($oldversion < 2013102100.0) {
        // Changing default value for the status of a course backup.
        $table = new xmldb_table('backup_courses');
        $field = new xmldb_field('laststatus', XMLDB_TYPE_CHAR, '1', null, XMLDB_NOTNULL, null, '5', 'lastendtime');
        // Launch change of precision for field value
        $dbman->change_field_precision($table, $field);
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013102100.0);
    }
    if ($oldversion < 2013102201.0) {
        $params = array('plugin' => 'editor_atto', 'name' => 'version');
        $attoversion = $DB->get_record('config_plugins', $params, 'value', IGNORE_MISSING);
        if ($attoversion) {
            $attoversion = floatval($attoversion->value);
        }
        // Only these versions that were part of 2.6 beta should be removed.
        // Manually installed versions of 2.5 - or later releases for 2.6 installed
        // via the plugins DB should not be uninstalled.
        if ($attoversion && $attoversion > 2013051500.0 && $attoversion < 2013102201.0) {
            // Remove all other associated config.
            unset_all_config_for_plugin('editor_atto');
            unset_all_config_for_plugin('atto_bold');
            unset_all_config_for_plugin('atto_clear');
            unset_all_config_for_plugin('atto_html');
            unset_all_config_for_plugin('atto_image');
            unset_all_config_for_plugin('atto_indent');
            unset_all_config_for_plugin('atto_italic');
            unset_all_config_for_plugin('atto_link');
            unset_all_config_for_plugin('atto_media');
            unset_all_config_for_plugin('atto_orderedlist');
            unset_all_config_for_plugin('atto_outdent');
            unset_all_config_for_plugin('atto_strike');
            unset_all_config_for_plugin('atto_title');
            unset_all_config_for_plugin('atto_underline');
            unset_all_config_for_plugin('atto_unlink');
            unset_all_config_for_plugin('atto_unorderedlist');
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013102201.0);
    }
    if ($oldversion < 2013102500.01) {
        // Find all fileareas that have missing root folder entry and add the root folder entry.
        if (empty($CFG->filesrootrecordsfixed)) {
            upgrade_fix_missing_root_folders();
            // To skip running the same script on the upgrade to the next major release.
            set_config('filesrootrecordsfixed', 1);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013102500.01);
    }
    if ($oldversion < 2013110500.01) {
        // MDL-38228. Corrected course_modules upgrade script instead of 2013021801.01.
        // This upgrade script fixes the mismatches between DB fields course_modules.section
        // and course_sections.sequence. It makes sure that each module is included
        // in the sequence of at least one section.
        // There is also a separate script for admins: admin/cli/fix_course_sortorder.php
        // This script in included in each major version upgrade process so make sure we don't run it twice.
        if (empty($CFG->movingmoduleupgradescriptwasrun)) {
            upgrade_course_modules_sequences();
            // To skip running the same script on the upgrade to the next major release.
            set_config('movingmoduleupgradescriptwasrun', 1);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013110500.01);
    }
    if ($oldversion < 2013110600.01) {
        if (!file_exists($CFG->dirroot . '/theme/mymobile')) {
            // Replace the mymobile settings.
            $DB->set_field('course', 'theme', 'clean', array('theme' => 'mymobile'));
            $DB->set_field('course_categories', 'theme', 'clean', array('theme' => 'mymobile'));
            $DB->set_field('user', 'theme', 'clean', array('theme' => 'mymobile'));
            $DB->set_field('mnet_host', 'theme', 'clean', array('theme' => 'mymobile'));
            // Replace the theme configs.
            if (get_config('core', 'theme') === 'mymobile') {
                set_config('theme', 'clean');
            }
            if (get_config('core', 'thememobile') === 'mymobile') {
                set_config('thememobile', 'clean');
            }
            if (get_config('core', 'themelegacy') === 'mymobile') {
                set_config('themelegacy', 'clean');
            }
            if (get_config('core', 'themetablet') === 'mymobile') {
                set_config('themetablet', 'clean');
            }
            // Hacky emulation of plugin uninstallation.
            unset_all_config_for_plugin('theme_mymobile');
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013110600.01);
    }
    if ($oldversion < 2013110600.02) {
        // If the user is logged in, we ensure that the alternate name fields are present
        // in the session. It will not be the case when upgrading from 2.5 downwards.
        if (!empty($USER->id)) {
            $refreshuser = $DB->get_record('user', array('id' => $USER->id));
            $fields = array('firstnamephonetic', 'lastnamephonetic', 'middlename', 'alternatename', 'firstname', 'lastname');
            foreach ($fields as $field) {
                $USER->{$field} = $refreshuser->{$field};
            }
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013110600.02);
    }
    // Moodle v2.6.0 release upgrade line.
    // Put any upgrade step following this.
    if ($oldversion < 2013111800.01) {
        // Delete notes of deleted courses.
        $sql = "DELETE FROM {post}\n                 WHERE NOT EXISTS (SELECT {course}.id FROM {course}\n                                    WHERE {course}.id = {post}.courseid)\n                       AND {post}.module = ?";
        $DB->execute($sql, array('notes'));
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013111800.01);
    }
    if ($oldversion < 2013122400.01) {
        // Purge stored passwords from config_log table, ideally this should be in each plugin
        // but that would complicate backporting...
        $items = array('core/cronremotepassword', 'core/proxypassword', 'core/smtppass', 'core/jabberpassword', 'enrol_database/dbpass', 'enrol_ldap/bind_pw', 'url/secretphrase');
        foreach ($items as $item) {
            list($plugin, $name) = explode('/', $item);
            $sqlcomparevalue = $DB->sql_compare_text('value');
            $sqlcompareoldvalue = $DB->sql_compare_text('oldvalue');
            if ($plugin === 'core') {
                $sql = "UPDATE {config_log}\n                           SET value = :value\n                         WHERE name = :name AND plugin IS NULL AND {$sqlcomparevalue} <> :empty";
                $params = array('value' => '********', 'name' => $name, 'empty' => '');
                $DB->execute($sql, $params);
                $sql = "UPDATE {config_log}\n                           SET oldvalue = :value\n                         WHERE name = :name AND plugin IS NULL AND {$sqlcompareoldvalue} <> :empty";
                $params = array('value' => '********', 'name' => $name, 'empty' => '');
                $DB->execute($sql, $params);
            } else {
                $sql = "UPDATE {config_log}\n                           SET value = :value\n                         WHERE name = :name AND plugin = :plugin AND {$sqlcomparevalue} <> :empty";
                $params = array('value' => '********', 'name' => $name, 'plugin' => $plugin, 'empty' => '');
                $DB->execute($sql, $params);
                $sql = "UPDATE {config_log}\n                           SET oldvalue = :value\n                         WHERE name = :name AND plugin = :plugin AND  {$sqlcompareoldvalue} <> :empty";
                $params = array('value' => '********', 'name' => $name, 'plugin' => $plugin, 'empty' => '');
                $DB->execute($sql, $params);
            }
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2013122400.01);
    }
    if ($oldversion < 2014011000.01) {
        // Define table cache_text to be dropped.
        $table = new xmldb_table('cache_text');
        // Conditionally launch drop table for cache_text.
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        unset_config('cachetext');
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014011000.01);
    }
    if ($oldversion < 2014011701.0) {
        // Fix gradebook sortorder duplicates.
        upgrade_grade_item_fix_sortorder();
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014011701.0);
    }
    if ($oldversion < 2014012300.01) {
        // Remove deleted users home pages.
        $sql = "DELETE FROM {my_pages}\n                WHERE EXISTS (SELECT {user}.id\n                                  FROM {user}\n                                  WHERE {user}.id = {my_pages}.userid\n                                  AND {user}.deleted = 1)\n                AND {my_pages}.private = 1";
        $DB->execute($sql);
        // Reached main savepoint.
        upgrade_main_savepoint(true, 2014012300.01);
    }
    if ($oldversion < 2014012400.0) {
        // Define table lock_db to be created.
        $table = new xmldb_table('lock_db');
        // Adding fields to table lock_db.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('resourcekey', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('expires', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('owner', XMLDB_TYPE_CHAR, '36', null, null, null, null);
        // Adding keys to table lock_db.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table lock_db.
        $table->add_index('resourcekey_uniq', XMLDB_INDEX_UNIQUE, array('resourcekey'));
        $table->add_index('expires_idx', XMLDB_INDEX_NOTUNIQUE, array('expires'));
        $table->add_index('owner_idx', XMLDB_INDEX_NOTUNIQUE, array('owner'));
        // Conditionally launch create table for lock_db.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014012400.0);
    }
    if ($oldversion < 2014021300.01) {
        // Delete any cached stats to force recalculation later, then we can be sure that cached records will have the correct
        // field.
        $DB->delete_records('question_response_analysis');
        $DB->delete_records('question_statistics');
        $DB->delete_records('quiz_statistics');
        // Define field variant to be added to question_statistics.
        $table = new xmldb_table('question_statistics');
        $field = new xmldb_field('variant', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'subquestion');
        // Conditionally launch add field variant.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014021300.01);
    }
    if ($oldversion < 2014021300.02) {
        // Define field variant to be added to question_response_analysis.
        $table = new xmldb_table('question_response_analysis');
        $field = new xmldb_field('variant', XMLDB_TYPE_INTEGER, '10', null, null, null, null, 'questionid');
        // Conditionally launch add field variant.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014021300.02);
    }
    if ($oldversion < 2014021800.0) {
        // Define field queued to be added to portfolio_tempdata.
        $table = new xmldb_table('portfolio_tempdata');
        $field = new xmldb_field('queued', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'instance');
        // Conditionally launch add field queued.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014021800.0);
    }
    if ($oldversion < 2014021900.01) {
        // Force uninstall of deleted tool.
        // Normally, in this sort of situation, we would do a file_exists check,
        // in case the plugin had been added back as an add-on. However, this
        // plugin is completely useless after Moodle 2.6, so we check that the
        // files have been removed in upgrade_stale_php_files_present, and we
        // uninstall it unconditionally here.
        // Remove all associated config.
        unset_all_config_for_plugin('tool_qeupgradehelper');
        upgrade_main_savepoint(true, 2014021900.01);
    }
    if ($oldversion < 2014021900.02) {
        // Define table question_states to be dropped.
        $table = new xmldb_table('question_states');
        // Conditionally launch drop table for question_states.
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014021900.02);
    }
    if ($oldversion < 2014021900.03) {
        // Define table question_sessions to be dropped.
        $table = new xmldb_table('question_sessions');
        // Conditionally launch drop table for question_sessions.
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014021900.03);
    }
    if ($oldversion < 2014022600.0) {
        $table = new xmldb_table('task_scheduled');
        // Adding fields to table task_scheduled.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('component', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('classname', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('lastruntime', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('nextruntime', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('blocking', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('minute', XMLDB_TYPE_CHAR, '25', null, XMLDB_NOTNULL, null, null);
        $table->add_field('hour', XMLDB_TYPE_CHAR, '25', null, XMLDB_NOTNULL, null, null);
        $table->add_field('day', XMLDB_TYPE_CHAR, '25', null, XMLDB_NOTNULL, null, null);
        $table->add_field('month', XMLDB_TYPE_CHAR, '25', null, XMLDB_NOTNULL, null, null);
        $table->add_field('dayofweek', XMLDB_TYPE_CHAR, '25', null, XMLDB_NOTNULL, null, null);
        $table->add_field('faildelay', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('customised', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0');
        $table->add_field('disabled', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0');
        // Adding keys to table task_scheduled.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table task_scheduled.
        $table->add_index('classname_uniq', XMLDB_INDEX_UNIQUE, array('classname'));
        // Conditionally launch create table for task_scheduled.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Define table task_adhoc to be created.
        $table = new xmldb_table('task_adhoc');
        // Adding fields to table task_adhoc.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('component', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('classname', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('nextruntime', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('faildelay', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        $table->add_field('customdata', XMLDB_TYPE_TEXT, null, null, null, null, null);
        $table->add_field('blocking', XMLDB_TYPE_INTEGER, '2', null, XMLDB_NOTNULL, null, '0');
        // Adding keys to table task_adhoc.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        // Adding indexes to table task_adhoc.
        $table->add_index('nextruntime_idx', XMLDB_INDEX_NOTUNIQUE, array('nextruntime'));
        // Conditionally launch create table for task_adhoc.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014022600.0);
    }
    if ($oldversion < 2014031400.02) {
        // Delete any cached stats to force recalculation later, then we can be sure that cached records will have the correct
        // field.
        $DB->delete_records('question_response_analysis');
        $DB->delete_records('question_statistics');
        $DB->delete_records('quiz_statistics');
        // Define field response to be dropped from question_response_analysis.
        $table = new xmldb_table('question_response_analysis');
        $field = new xmldb_field('rcount');
        // Conditionally launch drop field response.
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014031400.02);
    }
    if ($oldversion < 2014031400.03) {
        // Define table question_response_count to be created.
        $table = new xmldb_table('question_response_count');
        // Adding fields to table question_response_count.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('analysisid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('try', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('rcount', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table question_response_count.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('analysisid', XMLDB_KEY_FOREIGN, array('analysisid'), 'question_response_analysis', array('id'));
        // Conditionally launch create table for question_response_count.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014031400.03);
    }
    if ($oldversion < 2014031400.04) {
        // Define field whichtries to be added to question_response_analysis.
        $table = new xmldb_table('question_response_analysis');
        $field = new xmldb_field('whichtries', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null, 'hashcode');
        // Conditionally launch add field whichtries.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014031400.04);
    }
    if ($oldversion < 2014032600.0) {
        // Removing the themes from core.
        $themes = array('afterburner', 'anomaly', 'arialist', 'binarius', 'boxxie', 'brick', 'formal_white', 'formfactor', 'fusion', 'leatherbound', 'magazine', 'nimble', 'nonzero', 'overlay', 'serenity', 'sky_high', 'splash', 'standard', 'standardold');
        foreach ($themes as $key => $theme) {
            if (check_dir_exists($CFG->dirroot . '/theme/' . $theme, false)) {
                // Ignore the themes that have been re-downloaded.
                unset($themes[$key]);
            }
        }
        // Check we actually have themes to remove.
        if (count($themes) > 0) {
            // Replace the theme configs.
            if (in_array(get_config('core', 'theme'), $themes)) {
                set_config('theme', 'clean');
            }
            if (in_array(get_config('core', 'thememobile'), $themes)) {
                set_config('thememobile', 'clean');
            }
            if (in_array(get_config('core', 'themelegacy'), $themes)) {
                set_config('themelegacy', 'clean');
            }
            if (in_array(get_config('core', 'themetablet'), $themes)) {
                set_config('themetablet', 'clean');
            }
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014032600.0);
    }
    if ($oldversion < 2014032600.02) {
        // Add new fields to the 'tag_instance' table.
        $table = new xmldb_table('tag_instance');
        $field = new xmldb_field('component', XMLDB_TYPE_CHAR, '100', null, false, null, null, 'tagid');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('contextid', XMLDB_TYPE_INTEGER, '10', null, false, null, null, 'itemid');
        // Define the 'contextid' foreign key to be added to the tag_instance table.
        $key = new xmldb_key('contextid', XMLDB_KEY_FOREIGN, array('contextid'), 'context', array('id'));
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_key($table, $key);
            $DB->set_field('tag_instance', 'contextid', null, array('contextid' => 0));
            $dbman->change_field_default($table, $field);
        } else {
            $dbman->add_field($table, $field);
        }
        $dbman->add_key($table, $key);
        $field = new xmldb_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '0', 'ordering');
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $sql = "UPDATE {tag_instance}\n                   SET timecreated = timemodified";
        $DB->execute($sql);
        // Update all the course tags.
        $sql = "UPDATE {tag_instance}\n                   SET component = 'core',\n                       contextid = (SELECT ctx.id\n                                      FROM {context} ctx\n                                     WHERE ctx.contextlevel = :contextlevel\n                                       AND ctx.instanceid = {tag_instance}.itemid)\n                 WHERE itemtype = 'course' AND contextid IS NULL";
        $DB->execute($sql, array('contextlevel' => CONTEXT_COURSE));
        // Update all the user tags.
        $sql = "UPDATE {tag_instance}\n                   SET component = 'core',\n                       contextid = (SELECT ctx.id\n                                      FROM {context} ctx\n                                     WHERE ctx.contextlevel = :contextlevel\n                                       AND ctx.instanceid = {tag_instance}.itemid)\n                 WHERE itemtype = 'user' AND contextid IS NULL";
        $DB->execute($sql, array('contextlevel' => CONTEXT_USER));
        // Update all the blog post tags.
        $sql = "UPDATE {tag_instance}\n                   SET component = 'core',\n                       contextid = (SELECT ctx.id\n                                      FROM {context} ctx\n                                      JOIN {post} p\n                                        ON p.userid = ctx.instanceid\n                                     WHERE ctx.contextlevel = :contextlevel\n                                       AND p.id = {tag_instance}.itemid)\n                 WHERE itemtype = 'post' AND contextid IS NULL";
        $DB->execute($sql, array('contextlevel' => CONTEXT_USER));
        // Update all the wiki page tags.
        $sql = "UPDATE {tag_instance}\n                   SET component = 'mod_wiki',\n                       contextid = (SELECT ctx.id\n                                      FROM {context} ctx\n                                      JOIN {course_modules} cm\n                                        ON cm.id = ctx.instanceid\n                                      JOIN {modules} m\n                                        ON m.id = cm.module\n                                      JOIN {wiki} w\n                                        ON w.id = cm.instance\n                                      JOIN {wiki_subwikis} sw\n                                        ON sw.wikiid = w.id\n                                      JOIN {wiki_pages} wp\n                                        ON wp.subwikiid = sw.id\n                                     WHERE m.name = 'wiki'\n                                       AND ctx.contextlevel = :contextlevel\n                                       AND wp.id = {tag_instance}.itemid)\n                 WHERE itemtype = 'wiki_pages' AND contextid IS NULL";
        $DB->execute($sql, array('contextlevel' => CONTEXT_MODULE));
        // Update all the question tags.
        $sql = "UPDATE {tag_instance}\n                   SET component = 'core_question',\n                       contextid = (SELECT qc.contextid\n                                      FROM {question} q\n                                      JOIN {question_categories} qc\n                                        ON q.category = qc.id\n                                     WHERE q.id = {tag_instance}.itemid)\n                 WHERE itemtype = 'question' AND contextid IS NULL";
        $DB->execute($sql);
        // Update all the tag tags.
        $sql = "UPDATE {tag_instance}\n                   SET component = 'core',\n                       contextid = :systemcontext\n                 WHERE itemtype = 'tag' AND contextid IS NULL";
        $DB->execute($sql, array('systemcontext' => context_system::instance()->id));
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014032600.02);
    }
    if ($oldversion < 2014032700.01) {
        // Define field disabled to be added to task_scheduled.
        $table = new xmldb_table('task_scheduled');
        $field = new xmldb_field('disabled', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'customised');
        // Conditionally launch add field disabled.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014032700.01);
    }
    if ($oldversion < 2014032700.02) {
        // Update displayloginfailures setting.
        if (empty($CFG->displayloginfailures)) {
            set_config('displayloginfailures', 0);
        } else {
            set_config('displayloginfailures', 1);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014032700.02);
    }
    if ($oldversion < 2014040800.0) {
        // Define field availability to be added to course_modules.
        $table = new xmldb_table('course_modules');
        $field = new xmldb_field('availability', XMLDB_TYPE_TEXT, null, null, null, null, null, 'showdescription');
        // Conditionally launch add field availability.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Define field availability to be added to course_sections.
        $table = new xmldb_table('course_sections');
        $field = new xmldb_field('availability', XMLDB_TYPE_TEXT, null, null, null, null, null, 'groupingid');
        // Conditionally launch add field availability.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Update existing conditions to new format. This could be a slow
        // process, so begin by counting the number of affected modules/sections.
        // (Performance: On the OU system, these took ~0.3 seconds, with about
        // 20,000 results out of about 400,000 total rows in those tables.)
        $cmcount = $DB->count_records_sql("\n                SELECT COUNT(1)\n                  FROM {course_modules} cm\n                 WHERE cm.availablefrom != 0 OR\n                       cm.availableuntil != 0 OR\n                       EXISTS (SELECT 1 FROM {course_modules_availability} WHERE coursemoduleid = cm.id) OR\n                       EXISTS (SELECT 1 FROM {course_modules_avail_fields} WHERE coursemoduleid = cm.id)");
        $sectcount = $DB->count_records_sql("\n                SELECT COUNT(1)\n                  FROM {course_sections} cs\n                 WHERE cs.groupingid != 0 OR\n                       cs.availablefrom != 0 OR\n                       cs.availableuntil != 0 OR\n                       EXISTS (SELECT 1 FROM {course_sections_availability} WHERE coursesectionid = cs.id) OR\n                       EXISTS (SELECT 1 FROM {course_sections_avail_fields} WHERE coursesectionid = cs.id)");
        if ($cmcount + $sectcount > 0) {
            // Show progress bar and start db transaction.
            $transaction = $DB->start_delegated_transaction();
            $pbar = new progress_bar('availupdate', 500, true);
            // Loop through all course-modules.
            // (Performance: On the OU system, the query took <1 second for ~20k
            // results; updating all those entries took ~3 minutes.)
            $done = 0;
            $lastupdate = 0;
            $rs = $DB->get_recordset_sql("\n                    SELECT cm.id, cm.availablefrom, cm.availableuntil, cm.showavailability,\n                           COUNT(DISTINCT cma.id) AS availcount,\n                           COUNT(DISTINCT cmf.id) AS fieldcount\n                      FROM {course_modules} cm\n                           LEFT JOIN {course_modules_availability} cma ON cma.coursemoduleid = cm.id\n                           LEFT JOIN {course_modules_avail_fields} cmf ON cmf.coursemoduleid = cm.id\n                     WHERE cm.availablefrom != 0 OR\n                           cm.availableuntil != 0 OR\n                           cma.id IS NOT NULL OR\n                           cmf.id IS NOT NULL\n                  GROUP BY cm.id, cm.availablefrom, cm.availableuntil, cm.showavailability");
            foreach ($rs as $rec) {
                // Update progress initially and then once per second.
                if (time() != $lastupdate) {
                    $lastupdate = time();
                    $pbar->update($done, $cmcount + $sectcount, "Updating activity availability settings ({$done}/{$cmcount})");
                }
                // Get supporting records - only if there are any (to reduce the
                // number of queries where just date/group is used).
                if ($rec->availcount) {
                    $availrecs = $DB->get_records('course_modules_availability', array('coursemoduleid' => $rec->id));
                } else {
                    $availrecs = array();
                }
                if ($rec->fieldcount) {
                    $fieldrecs = $DB->get_records_sql("\n                            SELECT cmaf.userfield, cmaf.operator, cmaf.value, uif.shortname\n                              FROM {course_modules_avail_fields} cmaf\n                         LEFT JOIN {user_info_field} uif ON uif.id = cmaf.customfieldid\n                             WHERE cmaf.coursemoduleid = ?", array($rec->id));
                } else {
                    $fieldrecs = array();
                }
                // Update item.
                $availability = upgrade_availability_item(0, 0, $rec->availablefrom, $rec->availableuntil, $rec->showavailability, $availrecs, $fieldrecs);
                if ($availability) {
                    $DB->set_field('course_modules', 'availability', $availability, array('id' => $rec->id));
                }
                // Update progress.
                $done++;
            }
            $rs->close();
            // Loop through all course-sections.
            // (Performance: On the OU system, this took <1 second for, er, 150 results.)
            $done = 0;
            $rs = $DB->get_recordset_sql("\n                    SELECT cs.id, cs.groupingid, cs.availablefrom,\n                           cs.availableuntil, cs.showavailability,\n                           COUNT(DISTINCT csa.id) AS availcount,\n                           COUNT(DISTINCT csf.id) AS fieldcount\n                      FROM {course_sections} cs\n                           LEFT JOIN {course_sections_availability} csa ON csa.coursesectionid = cs.id\n                           LEFT JOIN {course_sections_avail_fields} csf ON csf.coursesectionid = cs.id\n                     WHERE cs.groupingid != 0 OR\n                           cs.availablefrom != 0 OR\n                           cs.availableuntil != 0 OR\n                           csa.id IS NOT NULL OR\n                           csf.id IS NOT NULL\n                  GROUP BY cs.id, cs.groupingid, cs.availablefrom,\n                           cs.availableuntil, cs.showavailability");
            foreach ($rs as $rec) {
                // Update progress once per second.
                if (time() != $lastupdate) {
                    $lastupdate = time();
                    $pbar->update($done + $cmcount, $cmcount + $sectcount, "Updating section availability settings ({$done}/{$sectcount})");
                }
                // Get supporting records - only if there are any (to reduce the
                // number of queries where just date/group is used).
                if ($rec->availcount) {
                    $availrecs = $DB->get_records('course_sections_availability', array('coursesectionid' => $rec->id));
                } else {
                    $availrecs = array();
                }
                if ($rec->fieldcount) {
                    $fieldrecs = $DB->get_records_sql("\n                            SELECT csaf.userfield, csaf.operator, csaf.value, uif.shortname\n                              FROM {course_sections_avail_fields} csaf\n                         LEFT JOIN {user_info_field} uif ON uif.id = csaf.customfieldid\n                             WHERE csaf.coursesectionid = ?", array($rec->id));
                } else {
                    $fieldrecs = array();
                }
                // Update item.
                $availability = upgrade_availability_item($rec->groupingid ? 1 : 0, $rec->groupingid, $rec->availablefrom, $rec->availableuntil, $rec->showavailability, $availrecs, $fieldrecs);
                if ($availability) {
                    $DB->set_field('course_sections', 'availability', $availability, array('id' => $rec->id));
                }
                // Update progress.
                $done++;
            }
            $rs->close();
            // Final progress update for 100%.
            $pbar->update($done + $cmcount, $cmcount + $sectcount, 'Availability settings updated for ' . ($cmcount + $sectcount) . ' activities and sections');
            $transaction->allow_commit();
        }
        // Drop tables which are not necessary because they are covered by the
        // new availability fields.
        $table = new xmldb_table('course_modules_availability');
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        $table = new xmldb_table('course_modules_avail_fields');
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        $table = new xmldb_table('course_sections_availability');
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        $table = new xmldb_table('course_sections_avail_fields');
        if ($dbman->table_exists($table)) {
            $dbman->drop_table($table);
        }
        // Drop unnnecessary fields from course_modules.
        $table = new xmldb_table('course_modules');
        $field = new xmldb_field('availablefrom');
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        $field = new xmldb_field('availableuntil');
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        $field = new xmldb_field('showavailability');
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Drop unnnecessary fields from course_sections.
        $table = new xmldb_table('course_sections');
        $field = new xmldb_field('availablefrom');
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        $field = new xmldb_field('availableuntil');
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        $field = new xmldb_field('showavailability');
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        $field = new xmldb_field('groupingid');
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014040800.0);
    }
    if ($oldversion < 2014041500.01) {
        $table = new xmldb_table('user_info_data');
        $sql = 'SELECT DISTINCT info.id
                  FROM {user_info_data} info
            INNER JOIN {user_info_data} older
                    ON info.fieldid = older.fieldid
                   AND info.userid = older.userid
                   AND older.id < info.id';
        $transaction = $DB->start_delegated_transaction();
        $rs = $DB->get_recordset_sql($sql);
        foreach ($rs as $rec) {
            $DB->delete_records('user_info_data', array('id' => $rec->id));
        }
        $transaction->allow_commit();
        $oldindex = new xmldb_index('userid_fieldid', XMLDB_INDEX_NOTUNIQUE, array('userid', 'fieldid'));
        if ($dbman->index_exists($table, $oldindex)) {
            $dbman->drop_index($table, $oldindex);
        }
        $newindex = new xmldb_index('userid_fieldid', XMLDB_INDEX_UNIQUE, array('userid', 'fieldid'));
        if (!$dbman->index_exists($table, $newindex)) {
            $dbman->add_index($table, $newindex);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014041500.01);
    }
    if ($oldversion < 2014050100.0) {
        // Fixing possible wrong MIME type for DigiDoc files.
        $extensions = array('%.bdoc', '%.cdoc', '%.ddoc');
        $select = $DB->sql_like('filename', '?', false);
        foreach ($extensions as $extension) {
            $DB->set_field_select('files', 'mimetype', 'application/x-digidoc', $select, array($extension));
        }
        upgrade_main_savepoint(true, 2014050100.0);
    }
    // Moodle v2.7.0 release upgrade line.
    // Put any upgrade step following this.
    // MDL-32543 Make sure that the log table has correct length for action and url fields.
    if ($oldversion < 2014051200.02) {
        $table = new xmldb_table('log');
        $columns = $DB->get_columns('log');
        if ($columns['action']->max_length < 40) {
            $index1 = new xmldb_index('course-module-action', XMLDB_INDEX_NOTUNIQUE, array('course', 'module', 'action'));
            if ($dbman->index_exists($table, $index1)) {
                $dbman->drop_index($table, $index1);
            }
            $index2 = new xmldb_index('action', XMLDB_INDEX_NOTUNIQUE, array('action'));
            if ($dbman->index_exists($table, $index2)) {
                $dbman->drop_index($table, $index2);
            }
            $field = new xmldb_field('action', XMLDB_TYPE_CHAR, '40', null, XMLDB_NOTNULL, null, null, 'cmid');
            $dbman->change_field_precision($table, $field);
            $dbman->add_index($table, $index1);
            $dbman->add_index($table, $index2);
        }
        if ($columns['url']->max_length < 100) {
            $field = new xmldb_field('url', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null, 'action');
            $dbman->change_field_precision($table, $field);
        }
        upgrade_main_savepoint(true, 2014051200.02);
    }
    if ($oldversion < 2014060300.0) {
        $gspath = get_config('assignfeedback_editpdf', 'gspath');
        if ($gspath !== false) {
            set_config('pathtogs', $gspath);
            unset_config('gspath', 'assignfeedback_editpdf');
        }
        upgrade_main_savepoint(true, 2014060300.0);
    }
    if ($oldversion < 2014061000.0) {
        // Fixing possible wrong MIME type for Publisher files.
        $filetypes = array('%.pub' => 'application/x-mspublisher');
        upgrade_mimetypes($filetypes);
        upgrade_main_savepoint(true, 2014061000.0);
    }
    if ($oldversion < 2014062600.01) {
        // We only want to delete DragMath if the directory no longer exists. If the directory
        // is present then it means it has been restored, so do not perform the uninstall.
        if (!check_dir_exists($CFG->libdir . '/editor/tinymce/plugins/dragmath', false)) {
            // Purge DragMath plugin which is incompatible with GNU GPL license.
            unset_all_config_for_plugin('tinymce_dragmath');
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014062600.01);
    }
    // Switch the order of the fields in the files_reference index, to improve the performance of search_references.
    if ($oldversion < 2014070100.0) {
        $table = new xmldb_table('files_reference');
        $index = new xmldb_index('uq_external_file', XMLDB_INDEX_UNIQUE, array('repositoryid', 'referencehash'));
        if ($dbman->index_exists($table, $index)) {
            $dbman->drop_index($table, $index);
        }
        upgrade_main_savepoint(true, 2014070100.0);
    }
    if ($oldversion < 2014070101.0) {
        $table = new xmldb_table('files_reference');
        $index = new xmldb_index('uq_external_file', XMLDB_INDEX_UNIQUE, array('referencehash', 'repositoryid'));
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        upgrade_main_savepoint(true, 2014070101.0);
    }
    if ($oldversion < 2014072400.01) {
        $table = new xmldb_table('user_devices');
        $oldindex = new xmldb_index('pushid-platform', XMLDB_KEY_UNIQUE, array('pushid', 'platform'));
        if ($dbman->index_exists($table, $oldindex)) {
            $key = new xmldb_key('pushid-platform', XMLDB_KEY_UNIQUE, array('pushid', 'platform'));
            $dbman->drop_key($table, $key);
        }
        upgrade_main_savepoint(true, 2014072400.01);
    }
    if ($oldversion < 2014080801.0) {
        // Define index behaviour (not unique) to be added to question_attempts.
        $table = new xmldb_table('question_attempts');
        $index = new xmldb_index('behaviour', XMLDB_INDEX_NOTUNIQUE, array('behaviour'));
        // Conditionally launch add index behaviour.
        if (!$dbman->index_exists($table, $index)) {
            $dbman->add_index($table, $index);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014080801.0);
    }
    if ($oldversion < 2014082900.01) {
        // Fixing possible wrong MIME type for 7-zip and Rar files.
        $filetypes = array('%.7z' => 'application/x-7z-compressed', '%.rar' => 'application/x-rar-compressed');
        upgrade_mimetypes($filetypes);
        upgrade_main_savepoint(true, 2014082900.01);
    }
    if ($oldversion < 2014082900.02) {
        // Replace groupmembersonly usage with new availability system.
        $transaction = $DB->start_delegated_transaction();
        if ($CFG->enablegroupmembersonly) {
            // If it isn't already enabled, we need to enable availability.
            if (!$CFG->enableavailability) {
                set_config('enableavailability', 1);
            }
            // Count all course-modules with groupmembersonly set (for progress
            // bar).
            $total = $DB->count_records('course_modules', array('groupmembersonly' => 1));
            $pbar = new progress_bar('upgradegroupmembersonly', 500, true);
            // Get all these course-modules, one at a time.
            $rs = $DB->get_recordset('course_modules', array('groupmembersonly' => 1), 'course, id');
            $i = 0;
            foreach ($rs as $cm) {
                // Calculate and set new availability value.
                $availability = upgrade_group_members_only($cm->groupingid, $cm->availability);
                $DB->set_field('course_modules', 'availability', $availability, array('id' => $cm->id));
                // Update progress.
                $i++;
                $pbar->update($i, $total, "Upgrading groupmembersonly settings - {$i}/{$total}.");
            }
            $rs->close();
        }
        // Define field groupmembersonly to be dropped from course_modules.
        $table = new xmldb_table('course_modules');
        $field = new xmldb_field('groupmembersonly');
        // Conditionally launch drop field groupmembersonly.
        if ($dbman->field_exists($table, $field)) {
            $dbman->drop_field($table, $field);
        }
        // Unset old config variable.
        unset_config('enablegroupmembersonly');
        $transaction->allow_commit();
        upgrade_main_savepoint(true, 2014082900.02);
    }
    if ($oldversion < 2014100100.0) {
        // Define table messageinbound_handlers to be created.
        $table = new xmldb_table('messageinbound_handlers');
        // Adding fields to table messageinbound_handlers.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('component', XMLDB_TYPE_CHAR, '100', null, XMLDB_NOTNULL, null, null);
        $table->add_field('classname', XMLDB_TYPE_CHAR, '255', null, XMLDB_NOTNULL, null, null);
        $table->add_field('defaultexpiration', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, '86400');
        $table->add_field('validateaddress', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '1');
        $table->add_field('enabled', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0');
        // Adding keys to table messageinbound_handlers.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('classname', XMLDB_KEY_UNIQUE, array('classname'));
        // Conditionally launch create table for messageinbound_handlers.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Define table messageinbound_datakeys to be created.
        $table = new xmldb_table('messageinbound_datakeys');
        // Adding fields to table messageinbound_datakeys.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('handler', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('datavalue', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('datakey', XMLDB_TYPE_CHAR, '64', null, null, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('expires', XMLDB_TYPE_INTEGER, '10', null, null, null, null);
        // Adding keys to table messageinbound_datakeys.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('handler_datavalue', XMLDB_KEY_UNIQUE, array('handler', 'datavalue'));
        $table->add_key('handler', XMLDB_KEY_FOREIGN, array('handler'), 'messageinbound_handlers', array('id'));
        // Conditionally launch create table for messageinbound_datakeys.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100100.0);
    }
    if ($oldversion < 2014100600.01) {
        // Define field aggregationstatus to be added to grade_grades.
        $table = new xmldb_table('grade_grades');
        $field = new xmldb_field('aggregationstatus', XMLDB_TYPE_CHAR, '10', null, XMLDB_NOTNULL, null, 'unknown', 'timemodified');
        // Conditionally launch add field aggregationstatus.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('aggregationweight', XMLDB_TYPE_NUMBER, '10, 5', null, null, null, null, 'aggregationstatus');
        // Conditionally launch add field aggregationweight.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Define field aggregationcoef2 to be added to grade_items.
        $table = new xmldb_table('grade_items');
        $field = new xmldb_field('aggregationcoef2', XMLDB_TYPE_NUMBER, '10, 5', null, XMLDB_NOTNULL, null, '0', 'aggregationcoef');
        // Conditionally launch add field aggregationcoef2.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        $field = new xmldb_field('weightoverride', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'needsupdate');
        // Conditionally launch add field weightoverride.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100600.01);
    }
    if ($oldversion < 2014100600.02) {
        // Define field aggregationcoef2 to be added to grade_items_history.
        $table = new xmldb_table('grade_items_history');
        $field = new xmldb_field('aggregationcoef2', XMLDB_TYPE_NUMBER, '10, 5', null, XMLDB_NOTNULL, null, '0', 'aggregationcoef');
        // Conditionally launch add field aggregationcoef2.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100600.02);
    }
    if ($oldversion < 2014100600.03) {
        // Define field weightoverride to be added to grade_items_history.
        $table = new xmldb_table('grade_items_history');
        $field = new xmldb_field('weightoverride', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '0', 'decimals');
        // Conditionally launch add field weightoverride.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100600.03);
    }
    if ($oldversion < 2014100600.04) {
        // Set flags so we can display a notice on all courses that might
        // be affected by the uprade to natural aggregation.
        if (!get_config('grades_sumofgrades_upgrade_flagged', 'core')) {
            // 13 == SUM_OF_GRADES.
            $sql = 'SELECT DISTINCT courseid
                      FROM {grade_categories}
                     WHERE aggregation = ?';
            $courses = $DB->get_records_sql($sql, array(13));
            foreach ($courses as $course) {
                set_config('show_sumofgrades_upgrade_' . $course->courseid, 1);
                // Set each of the grade items to needing an update so that when the user visits the grade reports the
                // figures will be updated.
                $DB->set_field('grade_items', 'needsupdate', 1, array('courseid' => $course->courseid));
            }
            set_config('grades_sumofgrades_upgrade_flagged', 1);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100600.04);
    }
    if ($oldversion < 2014100700.0) {
        // Define table messageinbound_messagelist to be created.
        $table = new xmldb_table('messageinbound_messagelist');
        // Adding fields to table messageinbound_messagelist.
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('messageid', XMLDB_TYPE_TEXT, null, null, XMLDB_NOTNULL, null, null);
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        $table->add_field('address', XMLDB_TYPE_TEXT, null, null, XMLDB_NOTNULL, null, null);
        $table->add_field('timecreated', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, null, null);
        // Adding keys to table messageinbound_messagelist.
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        $table->add_key('userid', XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
        // Conditionally launch create table for messageinbound_messagelist.
        if (!$dbman->table_exists($table)) {
            $dbman->create_table($table);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100700.0);
    }
    if ($oldversion < 2014100700.01) {
        // Define field visible to be added to cohort.
        $table = new xmldb_table('cohort');
        $field = new xmldb_field('visible', XMLDB_TYPE_INTEGER, '1', null, XMLDB_NOTNULL, null, '1', 'descriptionformat');
        // Conditionally launch add field visible.
        if (!$dbman->field_exists($table, $field)) {
            $dbman->add_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100700.01);
    }
    if ($oldversion < 2014100800.0) {
        // Remove qformat_learnwise (unless it has manually been added back).
        if (!file_exists($CFG->dirroot . '/question/format/learnwise/format.php')) {
            unset_all_config_for_plugin('qformat_learnwise');
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014100800.0);
    }
    if ($oldversion < 2014101001.0) {
        // Some blocks added themselves to the my/ home page, but they did not declare the
        // subpage of the default my home page. While the upgrade script has been fixed, this
        // upgrade script will fix the data that was wrongly added.
        // We only proceed if we can find the right entry from my_pages. Private => 1 refers to
        // the constant value MY_PAGE_PRIVATE.
        if ($systempage = $DB->get_record('my_pages', array('userid' => null, 'private' => 1))) {
            // Select the blocks there could have been automatically added. showinsubcontexts is hardcoded to 0
            // because it is possible for administrators to have forced it on the my/ page by adding it to the
            // system directly rather than updating the default my/ page.
            $blocks = array('course_overview', 'private_files', 'online_users', 'badges', 'calendar_month', 'calendar_upcoming');
            list($blocksql, $blockparams) = $DB->get_in_or_equal($blocks, SQL_PARAMS_NAMED);
            $select = "parentcontextid = :contextid\n                    AND pagetypepattern = :page\n                    AND showinsubcontexts = 0\n                    AND subpagepattern IS NULL\n                    AND blockname {$blocksql}";
            $params = array('contextid' => context_system::instance()->id, 'page' => 'my-index');
            $params = array_merge($params, $blockparams);
            $DB->set_field_select('block_instances', 'subpagepattern', $systempage->id, $select, $params);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014101001.0);
    }
    if ($oldversion < 2014102000.0) {
        // Define field aggregatesubcats to be dropped from grade_categories.
        $table = new xmldb_table('grade_categories');
        $field = new xmldb_field('aggregatesubcats');
        // Conditionally launch drop field aggregatesubcats.
        if ($dbman->field_exists($table, $field)) {
            $sql = 'SELECT DISTINCT courseid
                      FROM {grade_categories}
                     WHERE aggregatesubcats = ?';
            $courses = $DB->get_records_sql($sql, array(1));
            foreach ($courses as $course) {
                set_config('show_aggregatesubcats_upgrade_' . $course->courseid, 1);
                // Set each of the grade items to needing an update so that when the user visits the grade reports the
                // figures will be updated.
                $DB->set_field('grade_items', 'needsupdate', 1, array('courseid' => $course->courseid));
            }
            $dbman->drop_field($table, $field);
        }
        // Main savepoint reached.
        upgrade_main_savepoint(true, 2014102000.0);
    }
    return true;
}
 protected function process_module($data)
 {
     global $CFG, $DB;
     $data = (object) $data;
     $oldid = $data->id;
     $this->task->set_old_moduleversion($data->version);
     // Get the current course module data.
     $newitemid = $this->task->get_moduleid();
     $params = array('id' => $newitemid);
     $cmdata = $DB->get_record('course_modules', $params, '*', MUST_EXIST);
     // Group mode and Grouping.
     $cmdata->groupmode = $data->groupmode;
     $cmdata->groupingid = $this->get_mappingid('grouping', $data->groupingid);
     // Idnumber uniqueness.
     if (!grade_verify_idnumber($data->idnumber, $this->get_courseid())) {
         $data->idnumber = '';
     }
     $cmdata->idnumber = $data->idnumber;
     // Completion.
     if (!empty($CFG->enablecompletion)) {
         $cmdata->completion = $data->completion;
         $cmdata->completiongradeitemnumber = $data->completiongradeitemnumber;
         $cmdata->completionview = $data->completionview;
         $cmdata->completionexpected = $this->apply_date_offset($data->completionexpected);
     }
     // Availability.
     if (empty($CFG->enableavailability)) {
         $data->availability = null;
     }
     if (empty($data->availability)) {
         // If there are legacy availablility data fields (and no new format data),
         // convert the old fields.
         $data->availability = \core_availability\info::convert_legacy_fields($data, false);
     } else {
         if (!empty($data->groupmembersonly)) {
             // There is current availability data, but it still has groupmembersonly
             // as well (2.7 backups), convert just that part.
             require_once $CFG->dirroot . '/lib/db/upgradelib.php';
             $data->availability = upgrade_group_members_only($data->groupingid, $data->availability);
         }
     }
     $cmdata->availability = $data->availability;
     // Backups that did not include showdescription, set it to default 0
     // (this is not totally necessary as it has a db default, but just to
     // be explicit).
     if (!isset($data->showdescription)) {
         $data->showdescription = 0;
     }
     $cmdata->showdescription = $data->showdescription;
     // Course_module record ready, update it.
     $DB->update_record('course_modules', $cmdata);
     // Save mapping.
     $this->set_mapping('course_module', $oldid, $newitemid);
     // Set the new course_module id in the task.
     $this->task->set_moduleid($newitemid);
     // We can now create the context safely.
     $ctxid = context_module::instance($newitemid)->id;
     // Set the new context id in the task.
     $this->task->set_contextid($ctxid);
     // If there is the legacy showavailability data, store this for later use.
     // (This data is not present when restoring 'new' backups.)
     if (isset($cmdata->showavailability)) {
         // Cache the showavailability flag using the backup_ids data field.
         restore_dbops::set_backup_ids_record($this->get_restoreid(), 'module_showavailability', $newitemid, 0, null, (object) array('showavailability' => $cmdata->showavailability));
     }
 }