public function getClassGroupsJoinClassGroupRelatedByParent($criteria = null, $con = null) { include_once 'lib/model/om/BaseClassGroupPeer.php'; if ($criteria === null) { $criteria = new Criteria(); } elseif ($criteria instanceof Criteria) { $criteria = clone $criteria; } if ($this->collClassGroups === null) { if ($this->isNew()) { $this->collClassGroups = array(); } else { $criteria->add(ClassGroupPeer::CLASS_TYPE_ID, $this->getId()); $this->collClassGroups = ClassGroupPeer::doSelectJoinClassGroupRelatedByParent($criteria, $con); } } else { $criteria->add(ClassGroupPeer::CLASS_TYPE_ID, $this->getId()); if (!isset($this->lastClassGroupCriteria) || !$this->lastClassGroupCriteria->equals($criteria)) { $this->collClassGroups = ClassGroupPeer::doSelectJoinClassGroupRelatedByParent($criteria, $con); } } $this->lastClassGroupCriteria = $criteria; return $this->collClassGroups; }