Implemented LazyLoading of Entity in RequestedEntity

application/symfony/src/Domain/RequestManagement/Entity/RequestedEntity.php

@@ -3,14 +3,37 @@
 namespace App\Domain\RequestManagement\Entity;
 
 use App\Entity\AbstractEntity;
+use App\Entity\EntityInterface;
 use App\Attribut\SlugAttribut;
+use Doctrine\ORM\EntityManagerInterface;
+use App\Attribut\RequestedRightAttribut;
+use App\Domain\RepositoryManagement\LayerRepositoryFactoryServiceInterface;
+use App\Repository\Source\SourceRepositoryInterface;
+use App\Exception\NotCorrectInstanceException;
+use App\Entity\Source\AbstractSource;
+use App\Exception\NotSetException;
+use App\Repository\RepositoryInterface;
+use App\Entity\Source\SourceInterface;
 
 /**
  * @author kevinfrantz
  */
 class RequestedEntity extends AbstractEntity implements RequestedEntityInterface
 {
-    use SlugAttribut;
+    use SlugAttribut, RequestedRightAttribut;
+
+    /**
+     * @var LayerRepositoryFactoryServiceInterface
+     */
+    private $layerRepositoryFactoryService;
+
+    /**
+     * @param EntityManagerInterface $entityManager
+     */
+    public function __construct(LayerRepositoryFactoryServiceInterface $layerRepositoryFactoryService)
+    {
+        $this->layerRepositoryFactoryService = $layerRepositoryFactoryService;
+    }
 
     /**
      * {@inheritdoc}
@@ -28,4 +51,55 @@ class RequestedEntity extends AbstractEntity implements RequestedEntityInterface
         $this->setSlug($identity);
         $this->id = null;
     }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @see \App\Domain\RequestManagement\Entity\RequestedEntityInterface::getEntity()
+     */
+    public function getEntity(): EntityInterface
+    {
+        if ($this->hasSlug()) {
+            return $this->loadBySlug();
+        }
+        if ($this->hasId()) {
+            return $this->loadById();
+        }
+        throw new NotSetException('No identity attribut like id or slug was set!');
+    }
+
+    /**
+     * @return RepositoryInterface
+     */
+    private function getEntityRepository(): RepositoryInterface
+    {
+        $layer = $this->requestedRight->getLayer();
+        $repository = $this->layerRepositoryFactoryService->getRepository($layer);
+
+        return $repository;
+    }
+
+    /**
+     * @throws NotCorrectInstanceException
+     *
+     * @return SourceInterface
+     */
+    private function loadBySlug(): SourceInterface
+    {
+        $repository = $this->getEntityRepository();
+        if ($repository instanceof SourceRepositoryInterface) {
+            return $repository->findOneBySlug($this->slug);
+        }
+        throw new NotCorrectInstanceException('To read an entity by slug is just allowed for entitys of type '.AbstractSource::class);
+    }
+
+    /**
+     * @return EntityInterface
+     */
+    private function loadById(): EntityInterface
+    {
+        $repository = $this->getEntityRepository();
+
+        return $repository->find($this->id);
+    }
 }

application/symfony/src/Domain/RequestManagement/Entity/RequestedEntityInterface.php

@@ -4,13 +4,14 @@ namespace App\Domain\RequestManagement\Entity;
 
 use App\Entity\EntityInterface;
 use App\Attribut\SlugAttributInterface;
+use App\Attribut\RequestedRightAttributInterface;
 
 /**
  * A requested entity containes the stumb attributes to load an entity.
  *
  * @author kevinfrantz
  */
-interface RequestedEntityInterface extends EntityInterface, SlugAttributInterface
+interface RequestedEntityInterface extends EntityInterface, SlugAttributInterface, RequestedRightAttributInterface
 {
     /**
      * Sets the slug or the id.
@@ -18,4 +19,9 @@ interface RequestedEntityInterface extends EntityInterface, SlugAttributInterfac
      * @param string|int $identity
      */
     public function setIdentity($identity): void;
+
+    /**
+     * @return EntityInterface
+     */
+    public function getEntity(): EntityInterface;
 }