Hi ! this should work. I have done the same by declaring named queries on each of the bean classes. you could take a look at this sample: http://www.informatik.fh-wiesbaden.de/~knauf/SWTVertiefung2007/kucheninhe... Unfortunately the language is german, but hope you can make your way through the code. The application client calls finder methods to load -all beans of all subtypes -all beans of subtype a -all beans of subtype b Hope his helps Wolfgang View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4089620#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...