public function delete($con = null)
{
if ($this->isDeleted()) {
throw new PropelException("This object has already been deleted.");
}
if ($con === null) {
$con = Propel::getConnection(QuestionPeer::DATABASE_NAME);
}
try {
$con->begin();
QuestionPeer::doDelete($this, $con);
$this->setDeleted(true);
$con->commit();
} catch (PropelException $e) {
$con->rollback();
throw $e;
}
}