diff --git a/application/config/packages/doctrine.yaml b/application/config/packages/doctrine.yaml
index 816f889..3a349de 100644
--- a/application/config/packages/doctrine.yaml
+++ b/application/config/packages/doctrine.yaml
@@ -17,7 +17,6 @@ doctrine:
         url: '%env(resolve:DATABASE_URL)%'
         types:
             RightType: App\DBAL\Types\RightType
-            RecieverType: App\DBAL\Types\RecieverType
             LayerType: App\DBAL\Types\LayerType
     orm:
         auto_generate_proxy_classes: '%kernel.debug%'
diff --git a/application/src/DBAL/Types/RecieverType.php b/application/src/DBAL/Types/RecieverType.php
deleted file mode 100644
index 3a42b4f..0000000
--- a/application/src/DBAL/Types/RecieverType.php
+++ /dev/null
@@ -1,26 +0,0 @@
-<?php
-
-namespace App\DBAL\Types;
-
-use Fresh\DoctrineEnumBundle\DBAL\Types\AbstractEnumType;
-
-/**
- * @author kevinfrantz
- */
-final class RecieverType extends AbstractEnumType
-{
-    public const NODE = 'node';
-
-    public const PARENTS = 'parents';
-
-    public const CHILDREN = 'children';
-
-    public const SIBLINGS = 'siblings';
-
-    protected static $choices = [
-        self::NODE => 'node',
-        self::PARENTS => 'parents',
-        self::CHILDREN => 'children',
-        self::SIBLINGS => 'siblings',
-    ];
-}
diff --git a/application/src/Entity/Attribut/RecieverAttribut.php b/application/src/Entity/Attribut/RecieverAttribut.php
index be92e6b..6dd0394 100644
--- a/application/src/Entity/Attribut/RecieverAttribut.php
+++ b/application/src/Entity/Attribut/RecieverAttribut.php
@@ -2,22 +2,24 @@
 
 namespace App\Entity\Attribut;
 
+use App\Entity\Meta\RecieverInterface;
+
 /**
  * @author kevinfrantz
  */
 trait RecieverAttribut
 {
     /**
-     * @var string
+     * @var RecieverInterface
      */
     protected $reciever;
 
-    public function setReciever(string $type): void
+    public function setReciever(RecieverInterface $recieverGroup): void
     {
-        $this->reciever = $type;
+        $this->reciever = $recieverGroup;
     }
 
-    public function getReciever(): string
+    public function getReciever(): RecieverInterface
     {
         return $this->reciever;
     }
diff --git a/application/src/Entity/Attribut/RecieverAttributInterface.php b/application/src/Entity/Attribut/RecieverAttributInterface.php
index 0085ea9..08e4ed7 100644
--- a/application/src/Entity/Attribut/RecieverAttributInterface.php
+++ b/application/src/Entity/Attribut/RecieverAttributInterface.php
@@ -2,12 +2,14 @@
 
 namespace App\Entity\Attribut;
 
+use App\Entity\Meta\RecieverInterface;
+
 /**
  * @author kevinfrantz
  */
 interface RecieverAttributInterface
 {
-    public function setReciever(string $type): void;
+    public function setReciever(RecieverInterface $recieverGroup): void;
 
-    public function getReciever(): string;
+    public function getReciever(): RecieverInterface;
 }
diff --git a/application/src/Entity/Attribut/RecieverGroupAttribut.php b/application/src/Entity/Attribut/RecieverGroupAttribut.php
deleted file mode 100644
index aae2a1f..0000000
--- a/application/src/Entity/Attribut/RecieverGroupAttribut.php
+++ /dev/null
@@ -1,26 +0,0 @@
-<?php
-
-namespace App\Entity\Attribut;
-
-use App\Entity\Meta\RecieverGroupInterface;
-
-/**
- * @author kevinfrantz
- */
-trait RecieverGroupAttribut
-{
-    /**
-     * @var RecieverGroupInterface
-     */
-    protected $recieverGroup;
-
-    public function setRecieverGroup(RecieverGroupInterface $recieverGroup): void
-    {
-        $this->recieverGroup = $recieverGroup;
-    }
-
-    public function getRecieverGroup(): RecieverGroupInterface
-    {
-        return $this->recieverGroup;
-    }
-}
diff --git a/application/src/Entity/Attribut/RecieverGroupAttributInterface.php b/application/src/Entity/Attribut/RecieverGroupAttributInterface.php
deleted file mode 100644
index 1c9e043..0000000
--- a/application/src/Entity/Attribut/RecieverGroupAttributInterface.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-
-namespace App\Entity\Attribut;
-
-use App\Entity\Meta\RecieverGroupInterface;
-
-/**
- * @author kevinfrantz
- */
-interface RecieverGroupAttributInterface
-{
-    public function setRecieverGroup(RecieverGroupInterface $recieverGroup): void;
-
-    public function getRecieverGroup(): RecieverGroupInterface;
-}
diff --git a/application/src/Entity/Meta/Reciever.php b/application/src/Entity/Meta/Reciever.php
new file mode 100644
index 0000000..e16488a
--- /dev/null
+++ b/application/src/Entity/Meta/Reciever.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Entity\Meta;
+
+use Doctrine\Common\Collections\ArrayCollection;
+use Doctrine\ORM\Mapping as ORM;
+use Fresh\DoctrineEnumBundle\Validator\Constraints as DoctrineAssert;
+use App\Entity\Attribut\RelationAttribut;
+use App\Entity\Attribut\RelationAttributInterface;
+
+/**
+ * @author kevinfrantz
+ * @ORM\Table(name="meta_reciever_group")
+ * @ORM\Entity()
+ */
+class Reciever extends AbstractMeta implements RecieverInterface
+{
+    use RelationAttribut;
+
+    /**
+     * The node for which the right exists.
+     *
+     * @ORM\ManyToOne(targetEntity="Relation")
+     * @ORM\JoinColumn(name="relation_id", referencedColumnName="id")
+     *
+     * @var RelationAttributInterface
+     */
+    protected $relation;
+
+    public function getAllRecievers(): ArrayCollection
+    {
+    }
+
+}
diff --git a/application/src/Entity/Meta/RecieverGroup.php b/application/src/Entity/Meta/RecieverGroup.php
deleted file mode 100644
index 453300f..0000000
--- a/application/src/Entity/Meta/RecieverGroup.php
+++ /dev/null
@@ -1,53 +0,0 @@
-<?php
-
-namespace App\Entity\Meta;
-
-use App\Entity\Attribut\RecieverAttribut;
-use Doctrine\Common\Collections\ArrayCollection;
-use App\DBAL\Types\RecieverType;
-use Symfony\Component\Intl\Exception\NotImplementedException;
-use Doctrine\ORM\Mapping as ORM;
-use Fresh\DoctrineEnumBundle\Validator\Constraints as DoctrineAssert;
-use App\Entity\Attribut\RelationAttribut;
-use App\Entity\Attribut\RelationAttributInterface;
-
-/**
- * @author kevinfrantz
- * @ORM\Table(name="meta_reciever_group")
- * @ORM\Entity()
- */
-final class RecieverGroup extends AbstractMeta implements RecieverGroupInterface
-{
-    use RelationAttribut,RecieverAttribut;
-
-    /**
-     * @ORM\Column(name="reciever", type="RecieverType", nullable=false)
-     * @DoctrineAssert\Enum(entity="App\DBAL\Types\RecieverType")
-     *
-     * @var string
-     */
-    protected $reciever;
-
-    /**
-     * The node for which the right exists.
-     *
-     * @ORM\ManyToOne(targetEntity="Relation")
-     * @ORM\JoinColumn(name="relation_id", referencedColumnName="id")
-     *
-     * @var RelationAttributInterface
-     */
-    protected $relation;
-
-    public function getAllRecievers(): ArrayCollection
-    {
-        switch ($this->reciever) {
-            case RecieverType::PARENTS:
-                return $this->node->getParents();
-            case RecieverType::NODE:
-                return new ArrayCollection([$this->node]);
-            case RecieverType::CHILDREN:
-                return $this->node->getChilds();
-        }
-        throw new NotImplementedException('Reciever '.$this->reciever.' not implemented.');
-    }
-}
diff --git a/application/src/Entity/Meta/RecieverGroupInterface.php b/application/src/Entity/Meta/RecieverInterface.php
similarity index 58%
rename from application/src/Entity/Meta/RecieverGroupInterface.php
rename to application/src/Entity/Meta/RecieverInterface.php
index 9c722ca..6cf653e 100644
--- a/application/src/Entity/Meta/RecieverGroupInterface.php
+++ b/application/src/Entity/Meta/RecieverInterface.php
@@ -2,14 +2,13 @@
 
 namespace App\Entity\Meta;
 
-use App\Entity\Attribut\RecieverAttributInterface;
 use Doctrine\Common\Collections\ArrayCollection;
 use App\Entity\Attribut\RelationAttributInterface;
 
 /**
  * @author kevinfrantz
  */
-interface RecieverGroupInterface extends RelationAttributInterface, RecieverAttributInterface, MetaInterface
+interface RecieverInterface extends RelationAttributInterface, MetaInterface
 {
     public function getAllRecievers(): ArrayCollection;
 }
diff --git a/application/src/Entity/Meta/Right.php b/application/src/Entity/Meta/Right.php
index f59edde..1382aa3 100644
--- a/application/src/Entity/Meta/Right.php
+++ b/application/src/Entity/Meta/Right.php
@@ -11,7 +11,7 @@ use App\DBAL\Types\RightType;
 use App\Entity\Attribut\GrantAttribut;
 use App\Logic\Operation\OperationInterface;
 use App\Entity\Attribut\ConditionAttribut;
-use App\Entity\Attribut\RecieverGroupAttribut;
+use App\Entity\Attribut\RecieverAttribut;
 use App\Entity\Attribut\LayerAttribut;
 use App\Entity\Attribut\RelationAttribut;
 
@@ -22,7 +22,7 @@ use App\Entity\Attribut\RelationAttribut;
  */
 final class Right extends AbstractMeta implements RightInterface
 {
-    use TypeAttribut,LawAttribut, RelationAttribut, GrantAttribut,ConditionAttribut,RecieverGroupAttribut,LayerAttribut;
+    use TypeAttribut,LawAttribut, RelationAttribut, GrantAttribut,ConditionAttribut,RecieverAttribut,LayerAttribut;
 
     /**
      * @ORM\ManyToOne(targetEntity="Law", inversedBy="rights")
@@ -44,9 +44,9 @@ final class Right extends AbstractMeta implements RightInterface
      * @ORM\OneToOne(targetEntity="RecieverGroup",cascade={"persist", "remove"})
      * @ORM\JoinColumn(name="reciever_id", referencedColumnName="id")
      *
-     * @var RecieverGroupInterface
+     * @var RecieverInterface
      */
-    protected $recieverGroup;
+    protected $reciever;
 
     /**
      * @ORM\Column(type="boolean",name="`grant`")
diff --git a/application/src/Entity/Meta/RightInterface.php b/application/src/Entity/Meta/RightInterface.php
index 4d6bb4b..6625642 100644
--- a/application/src/Entity/Meta/RightInterface.php
+++ b/application/src/Entity/Meta/RightInterface.php
@@ -4,7 +4,7 @@ namespace App\Entity\Meta;
 
 use App\Entity\Attribut\TypeAttributInterface;
 use App\Entity\Attribut\LawAttributInterface;
-use App\Entity\Attribut\RecieverGroupAttributInterface;
+use App\Entity\Attribut\RecieverAttributInterface;
 use App\Entity\Attribut\GrantAttributInterface;
 use App\Entity\Attribut\ConditionAttributInterface;
 use App\Entity\Attribut\LayerAttributInterface;
@@ -14,6 +14,6 @@ use App\Entity\Attribut\RelationAttributInterface;
 /**
  * @author kevinfrantz
  */
-interface RightInterface extends TypeAttributInterface, LawAttributInterface, RelationGrantedInterface, GrantAttributInterface, RecieverGroupAttributInterface, RelationAttributInterface, ConditionAttributInterface, LayerAttributInterface, MetaInterface
+interface RightInterface extends TypeAttributInterface, LawAttributInterface, RelationGrantedInterface, GrantAttributInterface, RecieverAttributInterface, RelationAttributInterface, ConditionAttributInterface, LayerAttributInterface, MetaInterface
 {
 }
diff --git a/application/tests/unit/Entity/AbstractEntityTest.php b/application/tests/unit/Entity/AbstractEntityTest.php
index 41b0fe0..7f1fa4f 100644
--- a/application/tests/unit/Entity/AbstractEntityTest.php
+++ b/application/tests/unit/Entity/AbstractEntityTest.php
@@ -1,8 +1,10 @@
 <?php
 
-namespace App\Entity;
+namespace tests\unit\Entity;
 
 use PHPUnit\Framework\TestCase;
+use App\Entity\EntityInterface;
+use App\Entity\AbstractEntity;
 
 class AbstractEntityTest extends TestCase
 {
diff --git a/application/tests/unit/Entity/Meta/LawTest.php b/application/tests/unit/Entity/Meta/LawTest.php
index 83d1e27..0187fdc 100644
--- a/application/tests/unit/Entity/Meta/LawTest.php
+++ b/application/tests/unit/Entity/Meta/LawTest.php
@@ -1,10 +1,13 @@
 <?php
 
-namespace App\Entity\Meta;
+namespace tests\unit\Entity\Meta;
 
 use PHPUnit\Framework\TestCase;
 use Doctrine\Common\Collections\Collection;
 use Doctrine\Common\Collections\ArrayCollection;
+use App\Entity\Meta\LawInterface;
+use App\Entity\Meta\Law;
+use App\Entity\Meta\Right;
 
 class LawTest extends TestCase
 {
diff --git a/application/tests/unit/Entity/Meta/RecieverTest.php b/application/tests/unit/Entity/Meta/RecieverTest.php
new file mode 100644
index 0000000..dec4101
--- /dev/null
+++ b/application/tests/unit/Entity/Meta/RecieverTest.php
@@ -0,0 +1,24 @@
+<?php
+namespace App\tests\unit\Entity\Meta;
+
+use PHPUnit\Framework\TestCase;
+use Doctrine\Common\Collections\Collection;
+use App\Entity\Meta\Reciever;
+use App\Entity\Meta\RecieverInterface;
+
+class RecieverTest extends TestCase
+{
+    /**
+     * 
+     * @var RecieverInterface
+     */
+    public $reciever;
+    
+    public function setUp():void{
+        $this->reciever = new Reciever();
+    }
+    
+    public function testConstructor():void {
+        $this->assertEquals(Collection::class, $this->reciever->getAllRecievers());
+    }
+}
\ No newline at end of file
diff --git a/application/tests/unit/Entity/Meta/RightTest.php b/application/tests/unit/Entity/Meta/RightTest.php
index 0c5b8a6..13b5013 100644
--- a/application/tests/unit/Entity/Meta/RightTest.php
+++ b/application/tests/unit/Entity/Meta/RightTest.php
@@ -1,9 +1,12 @@
 <?php
 
-namespace App\Entity\Meta;
+namespace tests\unit\Entity;
 
 use PHPUnit\Framework\TestCase;
 use App\DBAL\Types\RightType;
+use App\Entity\Meta\RightInterface;
+use App\Entity\Meta\Right;
+use App\Entity\Meta\Law;
 
 /**
  * @todo Implement reciever test
diff --git a/application/tests/unit/Entity/Source/Operation/AbstractOperationTest.php b/application/tests/unit/Entity/Source/Operation/AbstractOperationTest.php
index 1e24676..65c9eee 100644
--- a/application/tests/unit/Entity/Source/Operation/AbstractOperationTest.php
+++ b/application/tests/unit/Entity/Source/Operation/AbstractOperationTest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Entity\Source\Operand;
+namespace tests\unit\Entity\Source\Operand;
 
 use PHPUnit\Framework\TestCase;
 use App\Entity\Source\Operation\AbstractOperation;
diff --git a/application/tests/unit/Entity/Source/Operation/AndOperationTest.php b/application/tests/unit/Entity/Source/Operation/AndOperationTest.php
index d2bbe47..e7e7221 100644
--- a/application/tests/unit/Entity/Source/Operation/AndOperationTest.php
+++ b/application/tests/unit/Entity/Source/Operation/AndOperationTest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Entity\Source\Operation;
+namespace tests\unit\Entity\Source\Operation;
 
 use PHPUnit\Framework\TestCase;
 use App\Exception\NotDefinedException;
@@ -8,6 +8,8 @@ use App\Logic\Result\Result;
 use App\Logic\Operation\OperandInterface;
 use App\Logic\Result\ResultInterface;
 use Doctrine\Common\Collections\ArrayCollection;
+use App\Entity\Source\Operation\OperationInterface;
+use App\Entity\Source\Operation\AndOperation;
 
 class AndOperationTest extends TestCase
 {