Hi All,

We have a table
A(a_id, name) where a_id is primary key
B(b_id, name) where b_id is primary key
C(a_id, b_id) where a_id & b_id are composite key and foreign key to table 'A' & 'B'

We have proper mapping for table 'A' & 'B' in hibernate 3 using annotation.

But we are not sure how to create entity class for table 'C', since it does not have any primary key.
We wanted to know how to map composite foreign key.

Can any one please help us how to create the entity class for table 'C'

Regards,
Sujit Joshi

you will have to create a Embeddable class something like

@Embeddable
public class PK implements Serializable {
String a_id;
String b_id;
}

then reference it from your entity class

@Id
public PK id;

Seems like you are trying to implement a many-to-many association?
If that's the case, I'd suggest you have a look at the @ManyToMany annotation and Hibernate will take care of generating all the tables/keys for you.

Regards,
- Savvas