CODEWITHSUNDEEP
javahibernatejpa
Robin
Robin

Reputation: 8357

Hibernate callback before first persist

edit: I misinterpreted the hibernate documentation, @PrePersist does exactly what I wanted. Stackoverflow won't let me delete the question so I'll leave it here for other's amusement.

Is there a callback in Hibernate before an Entity is persisted for the first time? I have some computations that should be done on the entity before it is saved for the first time but should not be repeated once the entity has been written to the DB once.

I am looking for something like @PrePersist but that gets called only before the first persist.

Upvotes: 2

Views: 991

Answers (3)

Adrian Shum
Adrian Shum

Reputation: 40036

@PrePersist is going to be called only once when an entity is persisted. In Hibernate, if you are persisting same entity multiple times, the latter tries will not be successful because the entity is already persisted before, hence there will not be any cases of @PrePersist called more than once for an entity

Upvotes: 2

devops
devops

Reputation: 9187

If you don't want to implement your computation inside of @PrePersist annotated method, you can try to set Entity Interceptor if you open new hibernate session:

Session session = sessionFactory.openSession(new MyBeforePersistInterceptor());

Upvotes: 0

dan
dan

Reputation: 13272

Yes. In your @PrePersist call you can perform the action only once. You need a flag that will tell you if the action was not performed already.

Upvotes: 0

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