[2.0][DDC-137] Fixed.

lib/Doctrine/ORM/UnitOfWork.php

@@ -903,13 +903,21 @@ class UnitOfWork implements PropertyChangedListener
      * Schedules an extra update that will be executed immediately after the
      * regular entity updates within the currently running commit cycle.
      * 
+     * Extra updates for entities are stored as (entity, changeset) tuples.
+     * 
      * @ignore
-     * @param $entity
+     * @param object $entity The entity for which to schedule an extra update.
-     * @param $changeset
+     * @param array $changeset The changeset of the entity (what to update).
      */
     public function scheduleExtraUpdate($entity, array $changeset)
     {
-        $this->_extraUpdates[spl_object_hash($entity)] = array($entity, $changeset);
+        $oid = spl_object_hash($entity);
+        if (isset($this->_extraUpdates[$oid])) {
+            list($ignored, $changeset2) = $this->_extraUpdates[$oid];
+            $this->_extraUpdates[$oid] = array($entity, $changeset + $changeset2);
+        } else {
+            $this->_extraUpdates[$oid] = array($entity, $changeset);
+        }
     }
 
     /**
@@ -1638,6 +1646,7 @@ class UnitOfWork implements PropertyChangedListener
         $this->_entityDeletions =
         $this->_collectionDeletions =
         $this->_collectionUpdates =
+        $this->_extraUpdates =
         $this->_orphanRemovals = array();
         $this->_commitOrderCalculator->clear();
     }

tests/Doctrine/Tests/ORM/Functional/OneToOneSelfReferentialAssociationTest.php

@@ -75,6 +75,34 @@ class OneToOneSelfReferentialAssociationTest extends \Doctrine\Tests\OrmFunction
         $this->assertLoadingOfAssociation($customer);
     }
     
+    public function testMultiSelfReference()
+    {
+        try {
+            $this->_schemaTool->createSchema(array(
+                $this->_em->getClassMetadata('Doctrine\Tests\ORM\Functional\MultiSelfReference')
+            ));
+        } catch (\Exception $e) {
+            // Swallow all exceptions. We do not test the schema tool here.
+        }
+        
+        $entity1 = new MultiSelfReference();
+        $this->_em->persist($entity1);
+        $entity1->setOther1($entity2 = new MultiSelfReference);
+        $entity1->setOther2($entity3 = new MultiSelfReference);
+        $this->_em->flush();
+        
+        $this->_em->clear();
+        
+        $entity2 = $this->_em->find(get_class($entity1), $entity1->getId());
+        
+        $this->assertTrue($entity2->getOther1() instanceof MultiSelfReference);
+        $this->assertTrue($entity2->getOther2() instanceof MultiSelfReference);
+        $this->assertNull($entity2->getOther1()->getOther1());
+        $this->assertNull($entity2->getOther1()->getOther2());
+        $this->assertNull($entity2->getOther2()->getOther1());
+        $this->assertNull($entity2->getOther2()->getOther2());
+    }
+
     public function assertLoadingOfAssociation($customer)
     {
         $this->assertTrue($customer->getMentor() instanceof ECommerceCustomer);
@@ -100,3 +128,27 @@ class OneToOneSelfReferentialAssociationTest extends \Doctrine\Tests\OrmFunction
         $this->_em->clear();
     }
 }
+
+/**
+ * @Entity
+ */
+class MultiSelfReference {
+    /** @Id @GeneratedValue(strategy="AUTO") @Column(type="integer") */
+    private $id;
+    /**
+     * @OneToOne(targetEntity="MultiSelfReference", cascade={"persist"})
+     * @JoinColumn(name="other1", referencedColumnName="id")
+     */
+    private $other1;
+    /**
+     * @OneToOne(targetEntity="MultiSelfReference", cascade={"persist"})
+     * @JoinColumn(name="other2", referencedColumnName="id")
+     */
+    private $other2;
+    
+    public function getId() {return $this->id;}
+    public function setOther1($other1) {$this->other1 = $other1;}
+    public function getOther1() {return $this->other1;}
+    public function setOther2($other2) {$this->other2 = $other2;}
+    public function getOther2() {return $this->other2;}
+}