/** @return UserAtEventModel **/
 public function loadByUserIDAndEvent($userId, EventModel $event)
 {
     global $DB;
     $stat = $DB->prepare("SELECT user_at_event_information.* FROM user_at_event_information WHERE user_account_id =:user_account_id AND event_id=:event_id");
     $stat->execute(array('user_account_id' => $userId, 'event_id' => $event->getId()));
     if ($stat->rowCount() > 0) {
         $uaem = new UserAtEventModel();
         $uaem->setFromDataBaseRow($stat->fetch());
         return $uaem;
     }
 }
 public function fetchAll()
 {
     $this->buildStart();
     $this->build();
     $this->buildStat();
     $results = array();
     while ($data = $this->stat->fetch()) {
         $uae = new UserAtEventModel();
         $uae->setFromDataBaseRow($data);
         $results[] = $uae;
     }
     return $results;
 }