How to find out efficiently the auto-generated id for a new object when using JPA?

Posted by webstarg on Stack Overflow See other posts from Stack Overflow or by webstarg
Published on 2010-04-21T22:01:43Z Indexed on 2010/04/21 22:03 UTC
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java

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annotations

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jpa

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persistence

Hello,

I have an attribute which is annotated with @Id. The ID is going to be generated automatically when persisting the object. That means that the ID-value is not defined before I persist the object. After persisting it, it has an ID (in the database), but unfortunately the field still remains null as long as I don't reload it from the DB. is there any easy way to find out the generated id? Or better: To configure that it will be written into the field?

Thanks in advance

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