/**
  * singleton
  *
  * @return CoreData_Controller
  */
 public static function getInstance()
 {
     if (self::$_instance === NULL) {
         self::$_instance = new CoreData_Controller();
     }
     return self::$_instance;
 }
 public function getCoreData()
 {
     try {
         $result = CoreData_Controller::getInstance()->getCoreData()->toArray();
     } catch (Exception $e) {
         Tinebase_Exception::log($e);
         $result = array();
     }
     return array('results' => $result, 'totalcount' => count($result));
 }