public static function countNotClosedExaminationSubjectsFor(SchoolYear $school_year, PropelPDO $con = null)
{
$con = is_null($con) ? Propel::getConnection() : $con;
$c = new Criteria();
$c->add(ExaminationPeer::SCHOOL_YEAR_ID, $school_year->getId());
$c->addJoin(ExaminationSubjectPeer::EXAMINATION_ID, ExaminationPeer::ID);
$c->add(ExaminationSubjectPeer::IS_CLOSED, false);
return ExaminationSubjectPeer::doCount($c, $con);
}
