/**
* 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();
}
