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Calling flush before query execution may cause PropertyValueException: Detached entity with generated id

Description

The issue may be related to

I’ve got the following exception in multiple cases:

However flush method should be called before query execution in all cases. Also, ID is autogenerated and not manually set

The following cases cause the error:

  1. Call flush and clean before executing a select query with one-to-one relations.

     

  2. Call flush and detach entities before executing a select query with one-to-one relations.

     

  3. Call flush multiple times in different transactions

There are more cases when this error may occur. However, I think the root cause of the issue is the same. therefore, it should be enough information to fix this issue in all cases.

I’ve attached a reproducer. Please run tests inside org.hibernate.bugs.JPAUnitTestCase

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Ruslan Gryn last week

bad news. Do you have any insights into which task this issue might have been addressed in the main branch?

Marco Belladelli last week

I don’t see how the two issues are related. I’ve tested your reproducer with the latest 6.6.14-SNAPSHOT, which includes the fix for , and the issue persists in all cases.

Gavin King last week

That sounds quite surprising and borderline suspicious.

Ruslan Gryn last week
Edited

It looks like that you fixed this issue in the scope of

 

Can you confirm it using my reproducer?

Ruslan Gryn April 9, 2025 at 11:22 AM

thanks. I will try to back-port the changes from H 7

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Created April 9, 2025 at 10:04 AM
Updated last week