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JavaRanch » Java Forums » Certification » EJB Certification (SCBCD/OCPJBCD)
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Instances of composite key classes (@IdClass annotation)

Kenneth Lomvey
Ranch Hand

Joined: Nov 08, 2008
Posts: 94
We can use the following method to specify a composite primary key class for an Entity class:




When an instance of CompositePK class will be created?
When it will be destroyed?
Instances of CompositePK may be pooled?

Please feel kind to answer above three questions.
 
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