> 1) why the enhancer complains that BaseObject need to be enhanced even > though it does not declare any fields ?
There is no problem presented here with the "enhancer" complaining. All is at runtime actually, thrown from a call by GAE/J's DN plugin, as shown by the stack trace above. As I've already stated, DataNucleus does NOT require any base class to be persistent when the classes are declared as I've already shown. If you have some other situation then demonstrate it -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.