protected static function get_definitions_for_component($componentname) {
        global $DB;
        list($a, $b) = core_component::normalize_component($componentname);
        $component = $b ? ($a . '_' . $b) : $a;
        $sql = 'component = :component';
        $params = array('component' => $component);
        if ($component === 'core') {
            $sql .= ' OR component LIKE :coreprefix';
            $params['coreprefix'] = 'core_%';
        }
        $fields = $DB->sql_concat_join("':'", array('itemtype', 'component'));
        $existingareas = $DB->get_records_sql(
                "SELECT $fields AS returnkey, a.* FROM {tag_area} a WHERE $sql", $params);
        $fields = $DB->sql_concat_join("':'", array('name', 'component'));
        $existingcolls = $DB->get_records_sql(
                "SELECT $fields AS returnkey, t.* FROM {tag_coll} t WHERE $sql", $params);
        return array($existingareas, $existingcolls);

    }
protected static function get_definitions_for_component($componentname) {
        global $DB;
        list($a, $b) = core_component::normalize_component($componentname);
        $component = $b ? ($a . '_' . $b) : $a;
        $sql = 'component = :component';
        $params = array('component' => $component);
        if ($component === 'core') {
            $sql .= ' OR component LIKE :coreprefix';
            $params['coreprefix'] = 'core_%';
        }
        $fields = $DB->sql_concat_join("':'", array('itemtype', 'component'));
        $existingareas = $DB->get_records_sql(
                "SELECT $fields AS returnkey, a.* FROM {tag_area} a WHERE $sql", $params);
        $fields = $DB->sql_concat_join("':'", array('name', 'component'));
        $existingcolls = $DB->get_records_sql(
                "SELECT $fields AS returnkey, t.* FROM {tag_coll} t WHERE $sql", $params);
        return array($existingareas, $existingcolls);

    }
protected static function get_definitions_for_component ( $ componentname ) { global $ DB ; list ( $ a , $ b ) = core_component :: normalize_component ( $ componentname ) ; $ component = $ b ? ( $ a . '_' . $ b ) : $ a ; $ sql = 'component = :component' ; $ params = array ( 'component' => $ component ) ; if ( $ component === 'core' ) { $ sql .= ' OR component LIKE :coreprefix' ; $ params [ 'coreprefix' ] = 'core_%' ; } $ fields = $ DB -> sql_concat_join ( "':'" , array ( 'itemtype' , 'component' ) ) ; $ existingareas = $ DB -> get_records_sql ( "SELECT $fields AS returnkey, a.* FROM {tag_area} a WHERE $sql" , $ params ) ; $ fields = $ DB -> sql_concat_join ( "':'" , array ( 'name' , 'component' ) ) ; $ existingcolls = $ DB -> get_records_sql ( "SELECT $fields AS returnkey, t.* FROM {tag_coll} t WHERE $sql" , $ params ) ; return array ( $ existingareas , $ existingcolls ) ; }
Returns all tag areas and collections that are currently cached in DB for this component

@param string $componentname
@return array first element is the list of areas and the second list of collections
Returns all tag areas and collections that are currently cached in DB for this component