/** * This is a method for emulating ON DELETE CASCADE for DBs that don't support this * feature (like MySQL or SQLite). * * This method is not very speedy because it must perform a query first to get * the implicated records and then perform the deletes by calling those Peer classes. * * This method should be used within a transaction if possible. * * @param Criteria $criteria * @param PropelPDO $con * @return int The number of affected rows (if supported by underlying database driver). */ protected static function doOnDeleteCascade(Criteria $criteria, PropelPDO $con) { // initialize var to track total num of affected rows $affectedRows = 0; // first find the objects that are implicated by the $criteria $objects = RolePeer::doSelect($criteria, $con); foreach ($objects as $obj) { // delete related GroupRole objects $criteria = new Criteria(GroupRolePeer::DATABASE_NAME); $criteria->add(GroupRolePeer::ROLE_KEY, $obj->getRoleKey()); $affectedRows += GroupRolePeer::doDelete($criteria, $con); // delete related UserRole objects $criteria = new Criteria(UserRolePeer::DATABASE_NAME); $criteria->add(UserRolePeer::ROLE_KEY, $obj->getRoleKey()); $affectedRows += UserRolePeer::doDelete($criteria, $con); // delete related Right objects $criteria = new Criteria(RightPeer::DATABASE_NAME); $criteria->add(RightPeer::ROLE_KEY, $obj->getRoleKey()); $affectedRows += RightPeer::doDelete($criteria, $con); } return $affectedRows; }
/** * Removes this object from datastore and sets delete attribute. * * @param PropelPDO $con * @return void * @throws PropelException * @see BaseObject::setDeleted() * @see BaseObject::isDeleted() */ public function delete(PropelPDO $con = null) { if ($this->isDeleted()) { throw new PropelException("This object has already been deleted."); } if ($con === null) { $con = Propel::getConnection(UserRolePeer::DATABASE_NAME, Propel::CONNECTION_WRITE); } $con->beginTransaction(); try { $ret = $this->preDelete($con); if ($ret) { UserRolePeer::doDelete($this, $con); $this->postDelete($con); $this->setDeleted(true); $con->commit(); } else { $con->commit(); } } catch (PropelException $e) { $con->rollBack(); throw $e; } }