NPE encountered on using AnnotationConfiguration ------------------------------------------------ Key: HHH-3705 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3705 Project: Hibernate Core Issue Type: Bug Components: envers Affects Versions: 3.3.1 Reporter: Kaizer Attachments: Hibernate_AnnotationTest.zip I have a bidirectional association between a Client and a ClientAddress. When I load a Client, the reference of Client set in the ClientAddress is Client_$$_javassist_0 which I think is the proxy. Now when I update or delete the client, I get a NPE - Exception in thread "main" java.lang.NullPointerException at org.hibernate.envers.event.AuditEventListener.generateBidirectionalCollectionChangeWorkUnits(AuditEventListener.java:107) at org.hibernate.envers.event.AuditEventListener.onPostDelete(AuditEventListener.java:153) at org.hibernate.action.EntityDeleteAction.postDelete(EntityDeleteAction.java:150) at org.hibernate.action.EntityDeleteAction.execute(EntityDeleteAction.java:117) at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:279) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:263) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:172) at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321) at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:50) at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1027) This is because the entry in the EntitiesConfigurations Map is of Client and not Client_$$_javassist_0. This works perfectly fine on moving to JPA (EntityManager, etc). I have attached a test case for the same. The DB settings will need to be changed. The above exception is encountered on running the deleteClient method in HibernateAnnotationTest.java. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira