public function resetCache() {
		// only reset caches if cache link is present
		if (!empty($this->db_object->object->options['cache_link'])) {
			$tags = array_unique($this->cache_tags);
			sort($tags, SORT_STRING);
			$hash = sha1(serialize($tags));
			\Cache::$reset_caches[$this->db_object->object->options['cache_link']][$hash] = $tags;
		}
	}