[jboss-as7-dev] Serialization, proxies issue & AS7-5496

I was able to reproduce the CNFE issue reported in AS7-5496 (using MySQL + the test case attached to the jira). The jira reports that the CNFE problem only occurs with Hibernate (using EclipseLink is a workaround). I suspect that EclipseLink might not be using a proxy for the lazy association but not really sure. According to the jira, this also used to work with AS5 (older Hibernate). During the first EJB client invocation, an entity is returned that contains a (lazy assocation) proxy that seems to be handled by a call to readResolve(). During the readResolve(), the original org.hibernate.proxy.pojo.javassist.SerializableProxy instance is replaced with a newly generated class de.seimet.photo.entity.Location_$$_javassist_2 instance. However, when the returned entity is passed to the other EJB client invocation (as a parameter), the generated class de.seimet.photo.entity.Location_$$_javassist_2, will not be known on the server side (causing the cnfe.) More details are in the jira. I'll try using the older version of Hibernate and see if that helps. Any other suggestions? Scott