Ejemplo n.º 1
0
	/**
	 * Performs a DELETE on the database, given a Groupe or Criteria object OR a primary key value.
	 *
	 * @param      mixed $values Criteria or Groupe object or primary key or array of primary keys
	 *              which is used to create the DELETE statement
	 * @param      PropelPDO $con the connection to use
	 * @return     int 	The number of affected rows (if supported by underlying database driver).  This includes CASCADE-related rows
	 *				if supported by native driver or if emulated using Propel.
	 * @throws     PropelException Any exceptions caught during processing will be
	 *		 rethrown wrapped into a PropelException.
	 */
	 public static function doDelete($values, PropelPDO $con = null)
	 {
		if ($con === null) {
			$con = Propel::getConnection(GroupePeer::DATABASE_NAME, Propel::CONNECTION_WRITE);
		}

		if ($values instanceof Criteria) {
			// rename for clarity
			$criteria = clone $values;
		} elseif ($values instanceof Groupe) { // it's a model object
			// create criteria based on pk values
			$criteria = $values->buildPkeyCriteria();
		} else { // it's a primary key, or an array of pks
			$criteria = new Criteria(self::DATABASE_NAME);
			$criteria->add(GroupePeer::ID, (array) $values, Criteria::IN);
		}

		// Set the correct dbName
		$criteria->setDbName(self::DATABASE_NAME);

		$affectedRows = 0; // initialize var to track total num of affected rows

		try {
			// use transaction because $criteria could contain info
			// for more than one table or we could emulating ON DELETE CASCADE, etc.
			$con->beginTransaction();
			
			// cloning the Criteria in case it's modified by doSelect() or doSelectStmt()
			$c = clone $criteria;
			$affectedRows += GroupePeer::doOnDeleteCascade($c, $con);
			
			// cloning the Criteria in case it's modified by doSelect() or doSelectStmt()
			$c = clone $criteria;
			GroupePeer::doOnDeleteSetNull($c, $con);
			
			// Because this db requires some delete cascade/set null emulation, we have to
			// clear the cached instance *after* the emulation has happened (since
			// instances get re-added by the select statement contained therein).
			if ($values instanceof Criteria) {
				GroupePeer::clearInstancePool();
			} elseif ($values instanceof Groupe) { // it's a model object
				GroupePeer::removeInstanceFromPool($values);
			} else { // it's a primary key, or an array of pks
				foreach ((array) $values as $singleval) {
					GroupePeer::removeInstanceFromPool($singleval);
				}
			}
			
			$affectedRows += BasePeer::doDelete($criteria, $con);
			GroupePeer::clearRelatedInstancePool();
			$con->commit();
			return $affectedRows;
		} catch (PropelException $e) {
			$con->rollBack();
			throw $e;
		}
	}