From d5e876372dc1974dcf597820f811139d1f294bb6 Mon Sep 17 00:00:00 2001
From: "Richard G. Curtis" <curtisr7@apache.org>
Date: Tue, 13 Jul 2010 15:10:41 +0000
Subject: [PATCH] OPENJPA-1676: Handle null class name in
 PCClassFileTransformer.

git-svn-id: https://svn.apache.org/repos/asf/openjpa/trunk@963752 13f79535-47bb-0310-9956-ffa450edef68
---
 .../org/apache/openjpa/enhance/PCClassFileTransformer.java    | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/openjpa-kernel/src/main/java/org/apache/openjpa/enhance/PCClassFileTransformer.java b/openjpa-kernel/src/main/java/org/apache/openjpa/enhance/PCClassFileTransformer.java
index b564a0662..74ac688cb 100644
--- a/openjpa-kernel/src/main/java/org/apache/openjpa/enhance/PCClassFileTransformer.java
+++ b/openjpa-kernel/src/main/java/org/apache/openjpa/enhance/PCClassFileTransformer.java
@@ -109,6 +109,10 @@ public class PCClassFileTransformer
         if (loader == _tmpLoader)
             return null;
 
+        // JDK bug -- OPENJPA-1676
+        if (className == null) {
+            return null;
+        }
         // prevent re-entrant calls, which can occur if the enhanceing
         // loader is used to also load OpenJPA libraries; this is to prevent 
         // recursive enhancement attempts for internal openjpa libraries