How to use @GeneratedValue in a non pk field

Question

I would like to know how we could use a sequence in JPA. We have a non-pk field which value must come from a sequence in DB. How could I update that value updating the entity?

Thanks in advance.

This is a duplicate: http://stackoverflow.com/questions/277630/hibernate-jpa-sequence-non-id — Pascal Thivent, Nov 06 '09 at 11:03

score 2 · Accepted Answer · edited May 17 '12 at 15:06

2

JPA defines @GeneratedValue to apply to just PK fields. DataNucleus accepts it on any field. Obviously that is beyond the JPA spec and other implementations may not support such behaviour.

edited May 17 '12 at 15:06

Matt Ball

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answered Nov 06 '09 at 13:46

DataNucleus

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How to use @GeneratedValue in a non pk field

1 Answers1