[jboss-user] [EJB 3.0] - Multiple (different) relations between two entities?

I need to write an EntityBean that holds a collection of EntityBeans of another type plus two single references to EntityBeans of that type. A simple example would be a customer who has a work address and a home address, and a collection of previously used addresses that also need to be stored. The classes could look like this: | @Entity | public class Customer implements Serializable | { | private Integer id; | ... | private Address homeAddress; | private Address workAddress; | private Address[] previousAddresses; | ... | @CollectionOfElements | @IndexColumn(name="index1") | public Address[] getPreviousAddresses() | { | return previousAddresses(); | } | | @OneToOne | public Address getHomeAddress() | { | return homeAddress; | } | | @OneToOne | public Address getWorkAddress() | { | return workAddress; | } | ... | } | | @Entity | public class Address implements Serializable | { | private Integer id; | ... | } | However, I could not find any combination of annotations that would persist this setup in a sensible way. All the Addresses always get stored in one table, and I can't find a way to distinguish which address plays which "role" in the customer class when trying to write an SQL query to read them. I would especially like to avoid having to declare a Customer attribute in the Address class, since this would be redundant on the object level and would produce a lot of implementation overhead in my application. Does anybody know how this can be done? I'm sure I am not the first person running into this need, but unfortunately, all the books, docs and tutorials I found don't cover it. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4161286#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...