private function getObject()
 {
     $url = $this->getExternalUrl();
     $c = new Criteria();
     $c->add(sfSeoUrlFriendlyPeer::EXTERNAL_URL, $url, Criteria::EQUAL);
     $obj = sfSeoUrlFriendlyPeer::doSelectOne($c);
     if (!empty($obj)) {
         return $obj;
     } else {
         return false;
     }
 }