/**
	 * 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
		$objects = CahierTexteTravailAFairePeer::doSelect($criteria, $con);
		foreach ($objects as $obj) {


			// delete related CahierTexteTravailAFaireFichierJoint objects
			$criteria = new Criteria(CahierTexteTravailAFaireFichierJointPeer::DATABASE_NAME);
			
			$criteria->add(CahierTexteTravailAFaireFichierJointPeer::ID_CT_DEVOIR, $obj->getIdCt());
			$affectedRows += CahierTexteTravailAFaireFichierJointPeer::doDelete($criteria, $con);
		}
		return $affectedRows;
	}