/**
* Retrieve object using using composite pkey values.
* @param int $usergroup_id
@param int $activity_id
* @param PropelPDO $con
* @return UsergroupHasActivity
*/
public static function retrieveByPK($usergroup_id, $activity_id, PropelPDO $con = null)
{
$key = serialize(array((string) $usergroup_id, (string) $activity_id));
if (null !== ($obj = UsergroupHasActivityPeer::getInstanceFromPool($key))) {
return $obj;
}
if ($con === null) {
$con = Propel::getConnection(UsergroupHasActivityPeer::DATABASE_NAME, Propel::CONNECTION_READ);
}
$criteria = new Criteria(UsergroupHasActivityPeer::DATABASE_NAME);
$criteria->add(UsergroupHasActivityPeer::USERGROUP_ID, $usergroup_id);
$criteria->add(UsergroupHasActivityPeer::ACTIVITY_ID, $activity_id);
$v = UsergroupHasActivityPeer::doSelect($criteria, $con);
return !empty($v) ? $v[0] : null;
}
