protected function modify(Carrousel $carrousel)
 {
     $q = $this->dao->prepare('UPDATE ' . $this->table() . ' SET ANNOUNCE_ID = :announceId WHERE ID = :id');
     $q->bindValue(':announceId', $carrousel->getAnnounceId());
     $q->bindValue(':id', $carrousel->id());
     $q->execute();
 }