Sorry, the design is mainly in Gavin's head. Your best bet is to look at the source code. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4125115#4125115 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4125115