/** * Method to get a DatabaseQuery object for retrieving the data set from a database. * * @return DatabaseQuery A DatabaseQuery object to retrieve the data set. * * @since 1.0 */ public function getItem() { $table = new GroupsTable($this->getDb()); $groupId = $this->getGroupId(); return $groupId ? $table->load($groupId)->getIterator() : $table->getIterator(); }