public static function retrieveByPK($course_schedule_id, $class_group_id, $subject_curr_id, $academic_calendar_id, $con = null)
{
if ($con === null) {
$con = Propel::getConnection(self::DATABASE_NAME);
}
$criteria = new Criteria();
$criteria->add(VSubjectAgendaPeer::COURSE_SCHEDULE_ID, $course_schedule_id);
$criteria->add(VSubjectAgendaPeer::CLASS_GROUP_ID, $class_group_id);
$criteria->add(VSubjectAgendaPeer::SUBJECT_CURR_ID, $subject_curr_id);
$criteria->add(VSubjectAgendaPeer::ACADEMIC_CALENDAR_ID, $academic_calendar_id);
$v = VSubjectAgendaPeer::doSelect($criteria, $con);
return !empty($v) ? $v[0] : null;
}
