Attachments to Doctrine Jira Issue DDC-1441 - https://github.com/doctrine/doctrine2/issues/2068

11077_not-loaded-proxy-patch.diff

diff --git a/src/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php b/src/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php
index 2044932..5dea312 100644
--- a/src/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php
+++ b/src/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php
@@ -162,6 +162,14 @@ class ClassMetadataFactory implements ClassMetadataFactoryInterface
                     return $this->loadedMetadata[$realClassName];
                 }
             }
+			
+			$reflection = new \ReflectionClass($className);
+			$isProxy = $reflection->implementsInterface('Doctrine\ORM\Proxy\Proxy');
+
+			if ($isProxy) {
+				$realClassName = $reflection->getParentClass()
+						->getName();
+			}
 
             if ($this->cacheDriver) {
                 if (($cached = $this->cacheDriver->fetch("$realClassName\$CLASSMETADATA")) !== false) {
@@ -259,7 +267,7 @@ class ClassMetadataFactory implements ClassMetadataFactoryInterface
                 }
                 continue;
             }
-
+			
             $class = $this->newClassMetadataInstance($className);
 
             if ($parent) {

11116_DDC1441Test.php

<?php

namespace Doctrine\Tests\ORM\Functional\Ticket;
use Doctrine\ORM\UnitOfWork;

require_once __DIR__ . '/../../../TestInit.php';

class DDC1441Test extends \Doctrine\Tests\OrmFunctionalTestCase
{
    protected function setUp()
    {
        parent::setUp();
		
        try {
            $this->_schemaTool->createSchema(array(
                $this->_em->getClassMetadata(__NAMESPACE__ . '\DDC1441File'),
                $this->_em->getClassMetadata(__NAMESPACE__ . '\DDC1441Picture'),
            ));
        } catch(\Exception $ignored) {}
    }

    public function testFailingCase()
    {
		// Remove all data so we can count in the end
		$this->_em->createQuery("DELETE FROM " . __NAMESPACE__ . '\DDC1441Picture')->execute();
		$this->_em->createQuery("DELETE FROM " . __NAMESPACE__ . '\DDC1441File')->execute();
		
		// Persist new objects
        $file = new DDC1441File;
        $picture = new DDC1441Picture;
        $picture->setFile($file);
		
        $this->_em->persist($picture);
		$this->_em->flush();
		$this->_em->clear();

		// Load picture with unloaded file proxy object
        $picture = $this->_em->find(__NAMESPACE__ . '\DDC1441Picture', $picture->getPictureId());
		
		// Unset the metadata for proxy object, partially simulates clean environment
		// e.g. when serialized $pic is unwrapped in another request
		$file = $picture->getFile();
		$proxyClassName = get_class($file);
		$this->_em->getMetadataFactory()
				->setMetadataFor($proxyClassName, null);
		
		$this->_em->merge($picture);
    }
}

/**
 * @Entity
 */
class DDC1441Picture
{
    /**
     * @Column(name="picture_id", type="integer")
     * @Id @GeneratedValue
     */
    private $pictureId;

    /**
     * @ManyToOne(targetEntity="DDC1441File", cascade={"persist", "remove", "merge"})
     * @JoinColumns({
     *   @JoinColumn(name="file_id", referencedColumnName="file_id")
     * })
     */
    private $file;

    /**
     * Get pictureId
     */
    public function getPictureId()
    {
        return $this->pictureId;
    }

    /**
     * Set file
     */
    public function setFile($value = null)
    {
        $this->file = $value;
    }

    /**
     * Get file
     */
    public function getFile()
    {
        return $this->file;
    }
}

/**
 * @Entity
 */
class DDC1441File
{
    /**
     * @Column(name="file_id", type="integer")
     * @Id
     * @GeneratedValue(strategy="AUTO")
     */
    public $fileId;

    /**
     * Get fileId
     */
    public function getFileId()
    {
        return $this->fileId;
    }
}