+ * @param int $userId
+ * @param int $cacheLifeTime Duration of the cache for this query
+ *
+ * @return int
+ */
+ public function countAllTags($userId, $cacheLifeTime = null)
+ {
+ $query = $this->createQueryBuilder('t')
+ ->select('t.slug')
+ ->leftJoin('t.entries', 'e')
+ ->where('e.user = :userId')->setParameter('userId', $userId)
+ ->groupBy('t.slug')
+ ->getQuery();
+
+ if (null !== $cacheLifeTime) {
+ $query->useQueryCache(true);
+ $query->useResultCache(true);
+ $query->setResultCacheLifetime($cacheLifeTime);
+ }
+
+ return \count($query->getArrayResult());
+ }
+
+ /**
+ * Find all tags per user.
+ * Instead of just left joined on the Entry table, we select only id and group by id to avoid tag multiplication in results.
+ * Once we have all tags id, we can safely request them one by one.
+ * This'll still be fastest than the previous query.
+ *
+ * @param int $userId
+ *
+ * @return array
+ */
+ public function findAllTags($userId)
+ {
+ $ids = $this->createQueryBuilder('t')
+ ->select('t.id')
+ ->leftJoin('t.entries', 'e')
+ ->where('e.user = :userId')->setParameter('userId', $userId)
+ ->groupBy('t.id')
+ ->orderBy('t.slug')
+ ->getQuery()
+ ->getArrayResult();
+
+ $tags = [];
+ foreach ($ids as $id) {
+ $tags[] = $this->find($id);
+ }
+
+ return $tags;
+ }
+
+ /**
+ * Find all tags (flat) per user with nb entries.
+ *
+ * @param int $userId