/**
* Invoke method, every class will have its own
* returns true/false on completion, setting both
* errormsg and output as necessary
*/
function invoke()
{
parent::invoke();
$result = true;
// Set own core attributes
$this->does_generate = ACTION_GENERATE_HTML;
// These are always here
global $CFG, $XMLDB, $DB, $OUTPUT;
// Do the job, setting result as needed
// Get the dir containing the file
$dirpath = required_param('dir', PARAM_PATH);
$dirpath = $CFG->dirroot . $dirpath;
// Get the correct dirs
if (!empty($XMLDB->dbdirs)) {
$dbdir = $XMLDB->dbdirs[$dirpath];
} else {
return false;
}
if (!empty($XMLDB->editeddirs)) {
$editeddir = $XMLDB->editeddirs[$dirpath];
$structure = $editeddir->xml_file->getStructure();
}
$tableparam = optional_param('table', NULL, PARAM_CLEAN);
// If no table, show form
if (!$tableparam) {
// No postaction here
$this->postaction = NULL;
// Get list of tables
$dbtables = $DB->get_tables();
$selecttables = array();
foreach ($dbtables as $dbtable) {
$i = $structure->findTableInArray($dbtable);
if ($i === NULL) {
$selecttables[$dbtable] = $dbtable;
}
}
// Get list of after tables
$aftertables = array();
if ($tables = $structure->getTables()) {
foreach ($tables as $aftertable) {
$aftertables[$aftertable->getName()] = $aftertable->getName();
}
}
if (!$selecttables) {
$this->errormsg = 'No tables available to be retrofitted';
return false;
}
// Now build the form
$o = '<form id="form" action="index.php" method="post">';
$o .= '<div>';
$o .= ' <input type="hidden" name ="dir" value="' . str_replace($CFG->dirroot, '', $dirpath) . '" />';
$o .= ' <input type="hidden" name ="action" value="new_table_from_mysql" />';
$o .= ' <input type="hidden" name ="postaction" value="edit_table" />';
$o .= ' <input type="hidden" name ="sesskey" value="' . sesskey() . '" />';
$o .= ' <table id="formelements" class="boxaligncenter" cellpadding="5">';
$o .= ' <tr><td><label for="menutable" accesskey="t">' . $this->str['createtable'] . ' </label>' . html_writer::select($selecttables, 'table') . '<label for="menuafter" accesskey="a">' . $this->str['aftertable'] . ' </label>' . html_writer::select($aftertables, 'after') . '</td></tr>';
$o .= ' <tr><td colspan="2" align="center"><input type="submit" value="' . $this->str['create'] . '" /></td></tr>';
$o .= ' <tr><td colspan="2" align="center"><a href="index.php?action=edit_xml_file&dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' . $this->str['back'] . ']</a></td></tr>';
$o .= ' </table>';
$o .= '</div></form>';
$this->output = $o;
// If table, retrofit information and, if everything works,
// go to the table edit action
} else {
// Get some params (table is mandatory here)
$tableparam = required_param('table', PARAM_CLEAN);
$afterparam = required_param('after', PARAM_CLEAN);
// Create one new xmldb_table
$table = new xmldb_table(strtolower(trim($tableparam)));
$table->setComment($table->getName() . ' table retrofitted from MySQL');
// Get fields info from ADODb
$dbfields = $DB->get_columns($tableparam);
if ($dbfields) {
foreach ($dbfields as $dbfield) {
// Create new XMLDB field
$field = new xmldb_field($dbfield->name);
// Set field with info retrofitted
$field->setFromADOField($dbfield);
// Add field to the table
$table->addField($field);
}
}
// Get PK, UK and indexes info from ADODb
$dbindexes = $DB->get_indexes($tableparam);
if ($dbindexes) {
$lastkey = NULL;
//To temp store the last key processed
foreach ($dbindexes as $indexname => $dbindex) {
// Add the indexname to the array
$dbindex['name'] = $indexname;
// We are handling one xmldb_key (primaries + uniques)
if ($dbindex['unique']) {
$key = new xmldb_key(strtolower($dbindex['name']));
// Set key with info retrofitted
$key->setFromADOKey($dbindex);
// Set default comment to PKs
if ($key->getType() == XMLDB_KEY_PRIMARY) {
}
// Add key to the table
$table->addKey($key);
// We are handling one xmldb_index (non-uniques)
} else {
$index = new xmldb_index(strtolower($dbindex['name']));
// Set index with info retrofitted
$index->setFromADOIndex($dbindex);
// Add index to the table
$table->addIndex($index);
}
}
}
// Finally, add the whole retroffited table to the structure
// in the place specified
$structure->addTable($table, $afterparam);
}
// Launch postaction if exists (leave this here!)
if ($this->getPostAction() && $result) {
return $this->launch($this->getPostAction());
}
// Return ok if arrived here
return $result;
}
