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Posted to dev@openjpa.apache.org by "Abe White (JIRA)" <ji...@apache.org> on 2007/03/19 22:48:32 UTC

[jira] Resolved: (OPENJPA-174) error when find()'ing an abstract class

     [ https://issues.apache.org/jira/browse/OPENJPA-174?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Abe White resolved OPENJPA-174.
-------------------------------

       Resolution: Fixed
    Fix Version/s: 0.9.7

Only affected abstract base types with a single String id field.  Fixed in SVN revision 520117.  Added test case in org.apache.openjpa.persistence.inheritance.TestFindAbstractClass.

> error when find()'ing an abstract class
> ---------------------------------------
>
>                 Key: OPENJPA-174
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-174
>             Project: OpenJPA
>          Issue Type: Bug
>    Affects Versions: 0.9.6
>         Environment: Java SE 5
> Derby 
>            Reporter: Jeffrey Blatttman
>             Fix For: 0.9.7
>
>         Attachments: abstracttest.zip, pom.zip
>
>
> class B extends A
> A is abstract
> B is concrete
> i have persisted an instance of B. now i try:
> A a = em.find(A.class, anId);
> openjpa fails with:
> ... Cannot create new application identity instance for abstract   class "class A"
> if i change the find to:
> A a = em.find(B.class, anId);
> openjpa works okay.
> note that i have two test cases. one is my real model, and one is the simple A and B class example above. my real model fails, where the simple A, B class example works as expected. so, it's is either a side affect of some other issue, or there is something wrong in my model and the error message is misleading or lacking information.

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