My view is that ideally you should never have to think about URLs or request parameters or session variables when writing a web application. Or at least you shouldn't have to think about them any more than you think about your database tables and columns when writing code to use an entity. Sure you need to worry about your column name when creating the mapping meta-data, but when you call person.setName(), you shouldn't be exposed to any of that. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3998638#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...