[jboss-user] [EJB 3.0] - Re: Need some help with mapping

Well, I think your ERM is broken. I think you will need three classes: -Item, to represent the information about the item. This contains an @EmbeddedId property of the ItemPK. -ItemPK, the primary key of the Item class. Should be annotateed @Embeddable. (BTW: Why do you store a TABLE_NAME. Does this refer to a table in the db? This sounds fishy.). Make sure you implement equals and hashcode-methods. - Create a Store Class which holds a Collection of Items (Set) as one of its properties and use @ManyToMany with an adequat @JoinTable. I cannot see why a store should extend an item. Do they share any properties except the pk of the item? Regards Felix View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4033175#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...