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How to join two tables having each two fileds in common? (seems like @OneToMany with 2 joinColumns)

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Hibernate version: 3.0.5
JBOSS Server: 4.3.0.GA
Database: Oracle10G

I am sorry to ask this question because it seems to me as some basics in SQL. Nonetheless I see nothing quite close to it in the books and web sites I am searching in.

so easy in SQL, I thought it expected it to be easy with hibernate ate well.

I have on table linked with many others. First, the DB schema is old and most of the table lacks primary keys (But embedded Id fixed that, thanks!)

Now, all I want is to make two join between table.

I basically have two table A and B. In each table, I have two common fields such as A.field1 = B.field3 and A.filed2 = B.filed4.

this a one-to-many unidirectional relation from A to B : each record from A has many related records in B.

I created an entity EA :

and another EB :

So how do I make my mapping so when I load an entity EA, I can have a list of all related EB? (meaning all EB respecting the joins A.field1 = B.field3 and A.filed2 = B.filed4)?
Alfred Couder
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Thanks to parmendratyagi (on

This just does the job :

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