"alesj" wrote : I don't know the name of the pattern, but it's trivial to do it. ;-) | Instead of changing the classes, you can write proper adapters / delegates. I have started implementing this and it really looks much better. :-) The first version of these classes, implementing only the metadata to metadata conversion, is committed to svn. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4238326#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...