/**
  * Gets the date of the last update of a domain or uri
  *
  * @return integer (unless a format string is supplied)
  */
 public function executeLastupdate()
 {
     $domain = $this->getRequestParameter('domain');
     $objects = $this->getRequestParameter('objects');
     $type = $this->getRequestParameter('type', "json");
     $lastUpdate = "";
     if (isset($domain)) {
         if ('schemas' == $objects) {
             $lastUpdate = SchemaPropertyElementHistoryPeer::getLastUpdateForDomain($domain, null);
         }
         if ('vocabs' == $objects) {
             $lastUpdate = ConceptPropertyHistoryPeer::getLastUpdateForDomain($domain, null);
         }
     }
     switch ($type) {
         case "json":
             echo json_encode($lastUpdate);
             break;
         default:
     }
     return sfView::NONE;
 }