Optimized ORM Modell

application/src/Entity/AbstractSource.php

@@ -9,7 +9,10 @@ use Doctrine\ORM\Mapping as ORM;
  * 
  * @author kevinfrantz
  * @see https://www.doctrine-project.org/projects/doctrine-orm/en/2.6/reference/inheritance-mapping.html
- *        
+ * @ORM\Entity
+ * @ORM\InheritanceType("JOINED")
+ * @ORM\DiscriminatorColumn(name="discr", type="string")
+ * @ORM\DiscriminatorMap({"user" = "User"})       
  */
 abstract class AbstractSource implements SourceInterface
 {  

application/src/Entity/Attribut/SourceAttribut.php

@@ -10,6 +10,8 @@ use App\Entity\SourceInterface;
  */
 trait SourceAttribut {
     /**
+     * @ORM\OneToOne(targetEntity="AbstractSource")
+     * @ORM\JoinColumn(name="source_id", referencedColumnName="id")
      * @var SourceInterface
      */
     protected $source;