[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-6361) Collection events may contain wrong stored snapshot after merging a detached entity into the persistencecontext

Collection events may contain wrong stored snapshot after merging a detached entity into the persistencecontext --------------------------------------------------------------------------------------------------------------- Key: HHH-6361 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6361 Project: Hibernate Core Issue Type: Bug Affects Versions: 3.6.5 Reporter: Erik-Berndt Scheper Priority: Minor After the merge process, driven by the {{DefaultMergeEventListener}}, it can happen that the Hibernate collection events contain references to an incorrect stored snapshot. This is both the case for the {{PersistentCollection}} and the {{CollectionEntry}}, as returned by {{session.getPersistenceContext().getCollectionEntry(persistentCollection)}} By itself, this looks like a minor issue. However, this leads to severe problems when Envers is used. This bug causes HHH-6349, which results in inconsistent (invalid) audit trails and possibly AssertionFailures when the {{ValidityAuditStrategy}} is used. I am pretty sure the same bug exists in the 4.0.0 Betas, since I have an Envers testcase for testng (3.6 branch) and junit4 (master) which both exhibit the same behaviour. However, I haven't looked in the changes in the merge process in 4.0.0 betas (compared to 3.6.x). I am currently preparing a testcase for the Hibernate testsuite (complimentary to the Envers testcases) together with a suggested fix, but this takes a bit more work than I anticipated.