[hibernate-issues] [Hibernate-JIRA] Closed: (HHH-2921) Polymorphic query breaks if entity proxy already exists in session

[Gail Badner (JIRA)]

     [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2921?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gail Badner closed HHH-2921.
----------------------------

      Assignee: Gail Badner
    Resolution: Rejected

This is expected behavior due to Java limitations.

Evicting the proxy for the superclass entity prior to executing polymorphic query will solve your problem.

I've added test cases illustrating the expected behavior in org.hibernate.test.discriminator.DiscriminatorTest:
- testLoadSuperclassProxyPolymorphicAccess illustrates that the polymorphic queries will return the proxy from the session cache; 
- testLoadSuperclassProxyEvictPolymorphicAccess illustrates that by evicting the proxy prior to executing the polymorphic queries, an instance of the subclass will be returned by the polymorphic queries.

> Polymorphic query breaks if entity proxy already exists in session
> ------------------------------------------------------------------
>
>                 Key: HHH-2921
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2921
>             Project: Hibernate3
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 3.2.5
>         Environment: 3.2.5, PostgreSQL 8.1.2, jdk1.5.0_08, Windows XP
>            Reporter: Johan Hoogenboezem
>            Assignee: Gail Badner
>
> I posted to the user forum about this on Oct 26 (http://forum.hibernate.org/viewtopic.php?t=980752). I've had no reply. This is a serious hassle for me, so I submit it as a bug.

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