Hmm,any Idea so? you can imagine ObjectA being a Product, and ObjectB a Category. I wants all the products that have X categories, remembering that a product can have one or more categories. If i want categories: "cheap, fruit", it would bring at least cheap fruit, but it could be a "imported" or "diet" one. (Silly example i know. :)) View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4231087#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...