Entity Events Before Commit

Support
#1

I am developing a tuition management module. I have 2 entities TuitionBill and TuitionBillItem with 1-n relationship. I want before deleting a TuitionBillItem to update the total amount of TuitionBill(amount). I based on the documentation given by the jmix developer but it seems to be incorrect or out of date. I would really appreciate it if you guys have any advice on how I can get TuitionBIll in my case.
Below is information on how I am doing. Thanks
Jmix Document : Entity Events :: Jmix Documentation

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Debug:

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Database:

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#2

Hi!
Try use AfterCommit event

1 Like
#3

Thank for suggesting. I tried it but it didn’t work.

#5

Hi @nguyencongphuong

The example in the docs works fine, I’ve just double-checked it.
Could you provide a test project where your problem is reproduced?

#7

In beforecommit event, on deleting the entity both the examples in documentation and tutorial are not working and giving nullpointerexception. Please guide?

#8

Ok. We cannot read the deleted entity in either beforecommit or aftercommit events. Thanks.

#9

Sure. For EntityChangedEvent.Type.DELETED you can only get the deleted entity’s ID using event.getEntityId() and values of its attributes using event.getChanges().getOldValue("attr-name") (old values are the attribute values at the moment of loading the entity from the database).