/**
* Performs a DELETE on the database, given a School or Criteria object OR a primary key value.
*
* @param mixed $values Criteria or School 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) {
$con = Propel::getConnection(SchoolPeer::DATABASE_NAME, Propel::CONNECTION_WRITE);
}
if ($values instanceof Criteria) {
// rename for clarity
$criteria = clone $values;
} elseif ($values instanceof School) {
// 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(SchoolPeer::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;
$affectedRows += SchoolPeer::doOnDeleteCascade($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) {
SchoolPeer::clearInstancePool();
} elseif ($values instanceof School) {
// it's a model object
SchoolPeer::removeInstanceFromPool($values);
} else {
// it's a primary key, or an array of pks
foreach ((array) $values as $singleval) {
SchoolPeer::removeInstanceFromPool($singleval);
}
}
$affectedRows += BasePeer::doDelete($criteria, $con);
SchoolPeer::clearRelatedInstancePool();
$con->commit();
return $affectedRows;
} catch (PropelException $e) {
$con->rollBack();
throw $e;
}
}