+ /**
+ * Return number of tags.
+ *
+ * @return int
+ */
+ public function countTags()
+ {
+ $user = $this->tokenStorage->getToken() ? $this->tokenStorage->getToken()->getUser() : null;
+
+ if (null === $user || !is_object($user)) {
+ return 0;
+ }
+
+ $qb = $this->tagRepository->findAllTags($user->getId());
+
+ $data = $this->enableCache($qb->getQuery())
+ ->getArrayResult();
+
+ return count($data);
+ }
+
+ /**
+ * Enable cache for a query.
+ *
+ * @param Query $query
+ *
+ * @return Query
+ */
+ private function enableCache(Query $query)
+ {
+ $query->useQueryCache(true);
+ $query->useResultCache(true);
+ $query->setResultCacheLifetime($this->lifeTime);
+
+ return $query;
+ }
+