Hibernate version:
3

I have an existing databse schema which I can't change and I am wondering how to map teh following relationship :
I have the following class :
public class User implements java.io.Serializable {

private Long addressId;
private Long organisationId;
......

and the other class :
public class Testing implements java.io.Serializable {
private User user;
........

The class teting needs a composite key of addressId and organisationId
this is how the tables are in the db

How could I map that relationship in hibernate. It is a one to one with composite id ?

Refer to this on one-to-one mapping section

http://www.hibernate.org/hib_docs/v3/re ... tions.html

you can also refer to hibernate in action book, page 330, which deals with, showing association using composite keys

hope this helps

sudhir

You need to use a class for your composite key in order to get Hibernate to work. Just use the same class for both objects, ie:




Then just define the <one-to-one ..> in the mapping files for the object(s)

Thanks a lot for that,

Now, I have created my composite key and understood that I need to use the key object in both places. Now my problem is my first object need a generator to create one of the id .
one of my first object key is actually generated by a genrator and the other one is from a many to one relationship. How would that composite id be written in the mapping doc ?