No documentation for Hibernate PostActionEventListener?

[thomaswiradikusuma]

I want to log UPDATEs for a certain table after committed to DB. From googling, it seems that I need to use PostUpdateEventListener.

I understand I can use @PersistenceUnitExtension to register an Interceptor ( https://quarkus.io/guides/hibernate-orm#interceptors ). But how do I register Hibernate listeners? Or is Interceptor suitable for my purpose? (It's not clear from Hibernate documentation which method to override for "listen to changes after UPDATE is committed to DB")

[quarkus-bot[bot]]

/cc @gsmet (hibernate-orm)

[mbellade]

Hello @thomaswiradikusuma, Hibernate Interceptors and event listeners are similar in the fact they're called during managed objects lifecycles but they actually serve different purposes. I highly recommend reading through this chapter of our user guide to get a better understanding of their intended purpose.

It's not clear from Hibernate documentation which method to override for "listen to changes after UPDATE is committed to DB"

That would be the org.hibernate.Interceptor#postFlush method, though if you want to listen for a single entity's update that might not be your best choice. JPA has its own native lifecycle callbacks, @PostUpdate would be the perfect fit for this task. Otherwise, you could register a org.hibernate.event.spi.PostUpdateEventListener to listen for all post-update callbacks, independently of entity type.

[thomaswiradikusuma]

@mbladel Thank you for the explanation. Based on Gemini's input, I made my interceptor @RequestScoped and used onFlushDirty to capture and store data in a field, and afterTransactionCompletion to log the captured data. It actually suggested using ThreadLocal, but I think @RequestScoped is cleaner.