### Eclipse Workspace Patch 1.0
#P Third-Party Eclipselink
Index: src/org/eclipse/persistence/internal/jpa/metadata/accessors/classes/ClassAccessor.java
===================================================================
RCS file: /cvs/provinzial/Third-Party Eclipselink/src/org/eclipse/persistence/internal/jpa/metadata/accessors/classes/ClassAccessor.java,v
retrieving revision 1.1
diff -u -r1.1 ClassAccessor.java
--- src/org/eclipse/persistence/internal/jpa/metadata/accessors/classes/ClassAccessor.java	15 Oct 2015 06:46:57 -0000	1.1
+++ src/org/eclipse/persistence/internal/jpa/metadata/accessors/classes/ClassAccessor.java	15 Oct 2015 06:47:43 -0000
@@ -1614,6 +1614,16 @@
                     referenceAccessor.processDerivedId(processing, processed);
                 }
                 
+                // BugFix für Bug 454898 (https://bugs.eclipse.org/bugs/show_bug.cgi?id=454898):
+                MetadataDescriptor lInheritanceRootDescriptor = referenceDescriptor.getInheritanceRootDescriptor();
+                if(lInheritanceRootDescriptor!=null){
+                    ClassAccessor lInheritanceRootAccessor = lInheritanceRootDescriptor.getClassAccessor();
+                    if (lInheritanceRootAccessor.hasDerivedId()) {    
+                    	lInheritanceRootAccessor.processDerivedId(processing, processed);
+                    }
+                }
+                // Ende-Bugfix
+                
                 // Now process the relationship, and the derived id.
                 if (! accessor.isProcessed()) {
                     accessor.process();