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

[Dave Lindquist (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-3799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=32641#action_32641 ] 

Dave Lindquist commented on HHH-3799:
-------------------------------------

We've just run into this problem as well...

Specifically, we have an object which contains a Set, loaded eagerly, and an attempt to do a 'contains' in that set fails.  However, if we change our getter to say "return new HashSet(<instance-variable>)" instead, then things succeed (ie, forcing creation of a new set object).

However, I have to disagree with the priority on this item -- this is NOT a minor item -- this is at LEAST a "major", if not a "critical" item.

> 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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