[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-3799) PersistentSet does not honor hashcode/equals contract when loaded eagerly

[Igor Vaynberg (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-3799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=32578#action_32578 ] 

Igor Vaynberg commented on HHH-3799:
------------------------------------

i wouldnt necessarily agree that the workaround is easy to implement.

the implementation is technically easy, but it sure as hell hard to find all the queries that have the potential to retrieve any entity that makes the affected container entity reachable.

eg FROM Entity e LEFT JOIN FETCH e.foo.bar.baz.container where as before all you had was FROM Entity e

> PersistentSet does not honor hashcode/equals contract when loaded eagerly
> -------------------------------------------------------------------------
>
>                 Key: HHH-3799
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3799
>             Project: Hibernate Core
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 3.3.1
>            Reporter: Igor Vaynberg
>            Assignee: Gail Badner
>            Priority: Minor
>         Attachments: test.zip
>
>
> when persistent set is loaded eagerly in some situations it calls hashcode on its items before their field values are populated and then uses this incorrect hashcode to store them in the set. this makes set items inaccessible by any collection items that rely on hashcode such as contains(), remove(), etc.
> attached is a simple maven test project that reproduces the error, unzip and mvn test to run the test.

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