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'Detached entity passed to persist' during merge when enableLazyInitialization is set to true

Description

After migrating hibernate from 4.3.11 to 5.1.10 and using the new hibernate-enhance-maven-plugin replacing the deprecated ant bytecode enhancement task, the following happens with an entity with OneToMany association and CascadeType.ALL.

  • enableLazyInitialization set to false and the test passes

  • enableLazyInitialization set to true and the test fails with "Detached entity passed to persist"

App worked fine with 4.3.11 version of hibernate and the old bytecode enhancement with ant task.

I can work around this by removing CascadeType.PERSIST but needs to modify lot of associations and the related service classes for persisting new entity.

From the debugging, I found that a Persist event triggers followed by Merge event when CascadeType.ALL is set on an association and the entities are detached when enableLazyInitialization is set to true.

Please find the test attached.

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  • 23 Oct 2017, 02:10 PM

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Sanne Grinovero May 23, 2018 at 5:38 PM

sorry we didn't see your comment earlier.

Yes it will, Gail was working on the backport yesterday: https://github.com/hibernate/hibernate-orm/pull/2294

Mario Martinho Dias April 11, 2018 at 3:40 PM

Will the correction be added to the 5.1 maintenance branch? 5.1.13 still suffers from this.

Vlad Mihalcea November 16, 2017 at 8:36 AM

Applied PR upstream.

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Created October 23, 2017 at 2:15 PM
Updated December 11, 2018 at 7:55 PM
Resolved November 16, 2017 at 8:36 AM