/**
  * (non-PHPdoc)
  * @see \oat\generis\model\data\RdfInterface::add()
  */
 public function add(\core_kernel_classes_Triple $triple)
 {
     if (!in_array($triple->modelid, $this->model->getReadableModels())) {
         $this->model->addReadableModel($triple->modelid);
     }
     $query = "INSERT INTO statements ( modelId, subject, predicate, object, l_language, epoch) VALUES ( ? , ? , ? , ? , ? , ?);";
     $success = $this->getPersistence()->exec($query, array($triple->modelid, $triple->subject, $triple->predicate, $triple->object, is_null($triple->lg) ? '' : $triple->lg, $this->getPersistence()->getPlatForm()->getNowExpression()));
     if ($triple->predicate == RDFS_SUBCLASSOF || $triple->predicate == RDF_TYPE) {
         $eventManager = $this->getServiceManager()->get(EventManager::CONFIG_ID);
         $eventManager->trigger(new ResourceCreated(new core_kernel_classes_Resource($triple->subject)));
     }
     return $success;
 }