DDC-536 - Make forwards compatible change in EntityRepository adding …

…getters for the protected variables to allow a smooth change when they will be turned private in Beta2

UPGRADE_TO_2_0

@@ -1,6 +1,19 @@
 
 # Upgrade from 2.0-ALPHA4 to 2.0-BETA1
 
+## EntityRepository deprecates access to protected variables
+
+Instead of accessing protected variables for the EntityManager in
+a custom EntityRepository it is now required to use the getter methods
+for all the three instance variables:
+
+* `$this->_em` now accessible through `$this->getEntityManager()`
+* `$this->_class` now accessible through `$this->getClassMetadata()`
+* `$this->_entityName` now accessible through `$this->getEntityName()`
+
+Important: For Beta 2 the protected visibility of these three properties will be
+changed to private!
+
 ## Console migrated to Symfony Console
 
 The Doctrine CLI has been replaced by Symfony Console Configuration

lib/Doctrine/ORM/EntityRepository.php

@@ -176,4 +176,28 @@ public function __call($method, $arguments)
             throw ORMException::invalidFindByCall($this->_entityName, $fieldName, $method.$by);
         }
     }
+
+    /**
+     * @return string
+     */
+    protected function getEntityName()
+    {
+        return $this->_entityName;
+    }
+
+    /**
+     * @return EntityManager
+     */
+    protected function getEntityManager()
+    {
+        return $this->_em;
+    }
+
+    /**
+     * @return Mapping\ClassMetadata
+     */
+    protected function getClassMetadata()
+    {
+        return $this->_class;
+    }
 }