/**
* Returns the names of sequences for each autoincrementing id field in all standard tables.
* @static
* @return array $table=>$sequencename
*/
public static function get_sequencenames()
{
if (isset(self::$sequencenames)) {
return self::$sequencenames;
}
if (!($structure = self::get_tablestructure())) {
return array();
}
self::$sequencenames = array();
foreach ($structure as $table => $ignored) {
$name = find_sequence_name(new XMLDBTable($table));
if ($name !== false) {
self::$sequencenames[$table] = $name;
}
}
return self::$sequencenames;
}
