Findes and Compound Keys

[markus . karg]

I am using JOnAS 2.2.4 with CMP EBs. I want to make a simple CMP EB that has a 
findByPrimeryKey. Now actually, the PK is a
compound key on the RDBMS, so I made PK class. The question is: How does JOnAS know 
what field in the PK class to use on what
position in the WHERE clause?