TagRepository: refactor query builder for queries by userId

[github/wallabag/wallabag.git] / src / Wallabag / CoreBundle / Repository / TagRepository.php

diff --git a/src/Wallabag/CoreBundle/Repository/TagRepository.php b/src/Wallabag/CoreBundle/Repository/TagRepository.php
index 41f616079dd53f69032512adf6a1bfb176b98657..bd2d9f9736aa7d59b75caec06f55fb1cb5e4c9b4 100644 (file)
--- a/src/Wallabag/CoreBundle/Repository/TagRepository.php
+++ b/src/Wallabag/CoreBundle/Repository/TagRepository.php
@@ -3,11 +3,42 @@
 namespace Wallabag\CoreBundle\Repository;
 
 use Doctrine\ORM\EntityRepository;
+use Doctrine\ORM\QueryBuilder;
+use Wallabag\CoreBundle\Entity\Tag;
 
 class TagRepository extends EntityRepository
 {
     /**
-     * Find Tags.
+     * Count all tags per user.
+     *
+     * @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 $userId
      *
@@ -15,9 +46,33 @@ class TagRepository extends EntityRepository
      */
     public function findAllTags($userId)
     {
-        return $this->createQueryBuilder('t')
-            ->leftJoin('t.entries', 'e')
-            ->where('e.user = :userId')->setParameter('userId', $userId);
+        $ids = $this->getQueryBuilderByUser($userId)
+            ->select('t.id')
+            ->getQuery()
+            ->getArrayResult();
+
+        $tags = [];
+        foreach ($ids as $id) {
+            $tags[] = $this->find($id);
+        }
+
+        return $tags;
+    }
+
+    /**
+     * Find all tags (flat) per user with nb entries.
+     *
+     * @param int $userId
+     *
+     * @return array
+     */
+    public function findAllFlatTagsWithNbEntries($userId)
+    {
+        return $this->getQueryBuilderByUser($userId)
+            ->select('t.id, t.label, t.slug, count(e.id) as nbEntries')
+            ->distinct(true)
+            ->getQuery()
+            ->getArrayResult();
     }
 
     /**
@@ -35,4 +90,36 @@ class TagRepository extends EntityRepository
             ->getQuery()
             ->getSingleResult();
     }
+
+    public function findForArchivedArticlesByUser($userId)
+    {
+        $ids = $this->getQueryBuilderByUser($userId)
+            ->select('t.id')
+            ->andWhere('e.isArchived = true')
+            ->getQuery()
+            ->getArrayResult();
+
+        $tags = [];
+        foreach ($ids as $id) {
+            $tags[] = $this->find($id);
+        }
+
+        return $tags;
+    }
+
+    /**
+     * Retrieve a sorted list of tags used by a user.
+     *
+     * @param int $userId
+     *
+     * @return QueryBuilder
+     */
+    private function getQueryBuilderByUser($userId)
+    {
+        return $this->createQueryBuilder('t')
+            ->leftJoin('t.entries', 'e')
+            ->where('e.user = :userId')->setParameter('userId', $userId)
+            ->groupBy('t.id')
+            ->orderBy('t.slug');
+    }
 }