[2.0] Fixed hardcoded version field access in optimistic locking.

lib/Doctrine/ORM/Persisters/StandardEntityPersister.php

@@ -253,7 +253,7 @@ class StandardEntityPersister
             $versionField = $this->_class->versionField;
             $versionFieldType = $this->_class->getTypeOfField($versionField);
             $where[$versionField] = Type::getType($versionFieldType)
-                    ->convertToDatabaseValue($entity->version, $this->_platform);
+                    ->convertToDatabaseValue($this->_class->reflFields[$versionField]->getValue($entity), $this->_platform);
             $versionFieldColumnName = $this->_class->getQuotedColumnName($versionField, $this->_platform);
             if ($versionFieldType == 'integer') {
                 $set[] = $versionFieldColumnName . ' = ' . $versionFieldColumnName . ' + 1';

tests/Doctrine/Tests/ORM/Functional/Locking/OptimisticTest.php

@@ -94,7 +94,7 @@ class OptimisticTest extends \Doctrine\Tests\OrmFunctionalTestCase
         $this->_em->persist($test);
         $this->_em->flush();
 
-        $this->assertEquals(1, $test->version);
+        $this->assertEquals(1, $test->getVersion());
     }
 
     /**
@@ -205,7 +205,9 @@ class OptimisticStandard
     /**
      * @Version @Column(type="integer")
      */
-    public $version;
+    private $version;
+    
+    function getVersion() {return $this->version;}
 }
 
 /**