I'm trying to accomplish something that would be trivial if I could extend SessionFactoryImpl and SessionImpl, but they're marked final. I've been beating my head trying to get around it and can't. Is there a good reason for not allowing people to extend these classes? What are the odds of getting it changed? BTW - I'm trying to write an interceptor that injects a criterion into every Criteria instance. Because Criteria instances are provided by a Session, and Session instances are provided by SessionFactory instances, I basically have to override all the way up the chain. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4227676#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...