/**
* Retrieve object using using composite pkey values.
* @param int $id
* @param int $id_eleve
* @param int $num_periode
* @param int $id_groupe
* @param PropelPDO $con
* @return CreditEcts
*/
public static function retrieveByPK($id, $id_eleve, $num_periode, $id_groupe, PropelPDO $con = null) {
$_instancePoolKey = serialize(array((string) $id, (string) $id_eleve, (string) $num_periode, (string) $id_groupe));
if (null !== ($obj = CreditEctsPeer::getInstanceFromPool($_instancePoolKey))) {
return $obj;
}
if ($con === null) {
$con = Propel::getConnection(CreditEctsPeer::DATABASE_NAME, Propel::CONNECTION_READ);
}
$criteria = new Criteria(CreditEctsPeer::DATABASE_NAME);
$criteria->add(CreditEctsPeer::ID, $id);
$criteria->add(CreditEctsPeer::ID_ELEVE, $id_eleve);
$criteria->add(CreditEctsPeer::NUM_PERIODE, $num_periode);
$criteria->add(CreditEctsPeer::ID_GROUPE, $id_groupe);
$v = CreditEctsPeer::doSelect($criteria, $con);
return !empty($v) ? $v[0] : null;
}
