diff --git a/lib/Alchemy/Phrasea/Model/Repositories/ApiApplicationRepository.php b/lib/Alchemy/Phrasea/Model/Repositories/ApiApplicationRepository.php
index 3e622dd792..792a7b102f 100644
--- a/lib/Alchemy/Phrasea/Model/Repositories/ApiApplicationRepository.php
+++ b/lib/Alchemy/Phrasea/Model/Repositories/ApiApplicationRepository.php
@@ -2,7 +2,10 @@
 
 namespace Alchemy\Phrasea\Model\Repositories;
 
+use Alchemy\Phrasea\Model\Entities\User;
+use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\ORM\EntityRepository;
+use Doctrine\ORM\Query\Expr;
 
 /**
  * ApiApplicationRepository
@@ -12,4 +15,40 @@ use Doctrine\ORM\EntityRepository;
  */
 class ApiApplicationRepository extends EntityRepository
 {
+    public function findByClientId($clientId)
+    {
+        $qb = $this->createQueryBuilder('app');
+        $qb->where($qb->expr()->eq('app.clientId', ':clientId'));
+        $qb->setParameter(':clientId', $clientId);
+
+        return $qb->getQuery()->getSingleResult();
+    }
+
+    public function findByCreator(User $user)
+    {
+        $qb = $this->createQueryBuilder('app');
+        $qb->where($qb->expr()->eq('app.creator', ':creator'));
+        $qb->setParameter(':creator', $user);
+
+        return $qb->getQuery()->getResult();
+    }
+
+    public function findByUser(User $user)
+    {
+        $qb = $this->createQueryBuilder('app');
+        $qb->innerJoin('app.accounts', 'acc', Expr\Join::WITH, $qb->expr()->eq('acc.user', ':user'));
+        $qb->setParameter(':user', $user);
+
+        return $qb->getQuery()->getResult();
+    }
+
+    public function findAuthorizedAppsByUser(User $user)
+    {
+        $qb = $this->createQueryBuilder('app');
+        $qb->innerJoin('app.accounts', 'acc', Expr\Join::WITH, $qb->expr()->eq('acc.user', ':user'));
+        $qb->andWhere($qb->expr()->eq('acc.revoked', $qb->expr()->literal(false)));
+        $qb->setParameter(':user', $user);
+
+        return $qb->getQuery()->getResult();
+    }
 }