Implement context-specific voters for all current entities that can be linked to a document

For reusability an AbstractStoredObjectVoter was created and a StoredObjectVoterInterface.
A WorkflowDocumentService checks whether the StoredObject is involved in a workflow.

src/Bundle/ChillActivityBundle/Repository/ActivityRepository.php

@@ -12,6 +12,8 @@ declare(strict_types=1);
 namespace Chill\ActivityBundle\Repository;
 
 use Chill\ActivityBundle\Entity\Activity;
+use Chill\DocStoreBundle\Entity\StoredObject;
+use Chill\DocStoreBundle\Repository\AssociatedEntityToStoredObjectInterface;
 use Chill\PersonBundle\Entity\AccompanyingPeriod;
 use Chill\PersonBundle\Entity\Person;
 use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepository;
@@ -23,7 +25,7 @@ use Doctrine\Persistence\ManagerRegistry;
  * @method Activity[]    findAll()
  * @method Activity[]    findBy(array $criteria, array $orderBy = null, $limit = null, $offset = null)
  */
-class ActivityRepository extends ServiceEntityRepository
+class ActivityRepository extends ServiceEntityRepository implements AssociatedEntityToStoredObjectInterface
 {
     public function __construct(ManagerRegistry $registry)
     {
@@ -97,4 +99,17 @@ class ActivityRepository extends ServiceEntityRepository
 
         return $qb->getQuery()->getResult();
     }
+
+    public function findAssociatedEntityToStoredObject(StoredObject $storedObject): ?object
+    {
+        $qb = $this->createQueryBuilder('a');
+        $query = $qb
+            ->join('a.documents', 'ad')
+            ->join('ad.storedObject', 'so')
+            ->where('so.id = :storedObjectId')
+            ->setParameter('storedObjectId', $storedObject->getId())
+            ->getQuery();
+
+        return $query->getResult();
+    }
 }