[2.0] DDC-381 - Unserialized Entity that was a proxy during serialize() will fatal when accessing methods that call _load() - A check for the existance of entity persister solves the problem.

lib/Doctrine/ORM/Proxy/ProxyFactory.php

@@ -256,7 +256,7 @@ namespace <namespace> {
             $this->_identifier = $identifier;
         }
         private function _load() {
-            if (!$this->__isInitialized__) {
+            if (!$this->__isInitialized__ && $this->_entityPersister) {
                 $this->__isInitialized__ = true;
                 $this->_entityPersister->load($this->_identifier, $this);
                 unset($this->_entityPersister);

tests/Doctrine/Tests/ORM/Functional/Ticket/DDC381Test.php

@@ -0,0 +1,58 @@
+<?php
+
+namespace Doctrine\Tests\ORM\Functional\Ticket;
+use Doctrine\ORM\UnitOfWork;
+
+require_once __DIR__ . '/../../../TestInit.php';
+
+class DDC381Test extends \Doctrine\Tests\OrmFunctionalTestCase
+{
+    protected function setUp()
+    {
+        parent::setUp();
+
+        try {
+            $this->_schemaTool->createSchema(array(
+                $this->_em->getClassMetadata(__NAMESPACE__ . '\DDC381Entity'),
+            ));
+        } catch(\Exception $e) {
+
+        }
+    }
+
+    public function testCallUnserializedProxyMethods()
+    {
+        $entity = new DDC381Entity();
+
+        $this->_em->persist($entity);
+        $this->_em->flush();
+        $this->_em->clear();
+        $persistedId = $entity->getId();
+
+        $entity = $this->_em->getReference('Doctrine\Tests\ORM\Functional\Ticket\DDC381Entity', $persistedId);
+
+        // explicitly load proxy
+        $id = $entity->getId();
+
+        $data = serialize($entity);
+        $entity = unserialize($data);
+
+        $this->assertEquals($persistedId, $entity->getId());
+    }
+}
+
+/**
+ * @Entity
+ */
+class DDC381Entity
+{
+    /**
+     * @Id @Column(type="integer") @generatedValue
+     */
+    protected $id;
+
+    public function getId()
+    {
+        return $this->id;
+    }
+}