Index: openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/enhance/UnenhancedCompoundPKFieldAccessSuperclass.java
===================================================================
--- openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/enhance/UnenhancedCompoundPKFieldAccessSuperclass.java	(revision 0)
+++ openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/enhance/UnenhancedCompoundPKFieldAccessSuperclass.java	(revision 0)
@@ -0,0 +1,85 @@
+/**
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.apache.openjpa.enhance;
+
+import javax.persistence.Id;
+import javax.persistence.IdClass;
+import javax.persistence.MappedSuperclass;
+
+@MappedSuperclass
+@IdClass(UnenhancedCompoundPKFieldAccessSuperclass.PK.class)
+public class UnenhancedCompoundPKFieldAccessSuperclass {
+
+    @Id
+    private int id0;
+    @Id private int id1;
+
+    protected UnenhancedCompoundPKFieldAccessSuperclass() {
+    }
+
+    public UnenhancedCompoundPKFieldAccessSuperclass(
+        int i0, int i1) {
+        id0 = i0;
+        id1 = i1;
+    }
+
+    public static class PK {
+        static {
+            // register persistent class in JVM
+            try {
+                Class.forName(UnenhancedCompoundPKFieldAccessSuperclass.class.getName());
+            } catch (Exception e) {
+                // ignore
+            }
+        }
+
+        public int id0;
+        public int id1;
+
+        public PK() {
+        }
+
+        public PK(int i0, int i1) {
+            id0 = i0;
+            id1 = i1;
+        }
+
+        public String toString() {
+            return String.valueOf(id0)
+                + "::" + String.valueOf(id1);
+        }
+
+        public int hashCode() {
+            int rs = 17;
+            rs = rs * 37 + (int) (id0 ^ (id1 >>> 32));
+            rs = rs * 37 + (int) (id0 ^ (id1 >>> 32));
+            return rs;
+        }
+
+        public boolean equals(Object obj) {
+            if(this == obj)
+                return true;
+            if(obj == null || obj.getClass() != getClass())
+                return false;
+
+            UnenhancedCompoundPKFieldAccessSuperclass.PK other = (UnenhancedCompoundPKFieldAccessSuperclass.PK) obj;
+            return (id0 == other.id0)
+                && (id1 == other.id1);
+        }
+    }
+}
Index: openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/enhance/TestUnenhancedCompoundPKSubclass.java
===================================================================
--- openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/enhance/TestUnenhancedCompoundPKSubclass.java	(revision 0)
+++ openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/enhance/TestUnenhancedCompoundPKSubclass.java	(revision 0)
@@ -0,0 +1,56 @@
+/**
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.apache.openjpa.enhance;
+
+import org.apache.openjpa.persistence.test.SingleEMTestCase;
+
+public class TestUnenhancedCompoundPKSubclass extends SingleEMTestCase {
+
+    public void setUp() {
+        setUp(UnenhancedCompoundPKFieldAccessSuperclass.class, UnenhancedCompoundPKFieldAccessSubclass.class, CLEAR_TABLES);
+    }
+
+    public void testNothing() {
+        // maven requires that there be atleast one test method
+    }
+
+    public void XtestCompoundPKFieldAccessUserDefined() {
+        UnenhancedCompoundPKFieldAccessSuperclass un = new UnenhancedCompoundPKFieldAccessSubclass(17, 31);
+        UnenhancedCompoundPKFieldAccessSuperclass.PK oid = new UnenhancedCompoundPKFieldAccessSuperclass.PK(17, 31);
+        compoundPKHelper(un, oid, true);
+    }
+
+    public void XtestCompoundPKFieldAccessOpenJPADefined() {
+        UnenhancedCompoundPKFieldAccessSuperclass un = new UnenhancedCompoundPKFieldAccessSubclass(17, 31);
+        UnenhancedCompoundPKFieldAccessSuperclass.PK oid = new UnenhancedCompoundPKFieldAccessSuperclass.PK(17, 31);
+        compoundPKHelper(un, oid, false);
+    }
+
+    private void compoundPKHelper(Object o, Object oid, boolean userDefined) {
+        em.getTransaction().begin();
+        em.persist(o);
+        em.getTransaction().commit();
+
+        if (!userDefined) {
+            em.close();
+            em = emf.createEntityManager();
+        }
+
+        em.find(o.getClass(), oid);
+    }
+}
Index: openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/enhance/UnenhancedCompoundPKFieldAccessSubclass.java
===================================================================
--- openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/enhance/UnenhancedCompoundPKFieldAccessSubclass.java	(revision 0)
+++ openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/enhance/UnenhancedCompoundPKFieldAccessSubclass.java	(revision 0)
@@ -0,0 +1,34 @@
+/**
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.apache.openjpa.enhance;
+
+import javax.persistence.MappedSuperclass;
+import javax.persistence.IdClass;
+import javax.persistence.Id;
+import javax.persistence.Entity;
+
+@Entity
+@IdClass(UnenhancedCompoundPKFieldAccessSubclass.PK.class)
+public class UnenhancedCompoundPKFieldAccessSubclass extends UnenhancedCompoundPKFieldAccessSuperclass {
+    public UnenhancedCompoundPKFieldAccessSubclass() {
+    }
+
+    public UnenhancedCompoundPKFieldAccessSubclass(int i0, int i1) {
+        super(i0, i1);
+    }
+}