[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=32580#action_32580 ] 

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

here is an easier workaround, at least this one is localized to the collections affected, you can call this method in the getter before returning the collection or any time after its loaded. fun.

private static void rebuildPersistentSet(PersistentSet urls)
{
try
{
Field set = urls.getClass().getDeclaredField("set");
set.setAccessible(true);
Set<Object> s = (Set<Object>) set.get(urls);
Set<?> temp = new HashSet<Object>(s);
s.clear();
s.addAll(temp);
}
catch (Exception e)
{
e.printStackTrace();
}
}


> 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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