[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-4358) Having to use @ForceDiscriminator kind of breaks JPA compatibility

[Steve Ebersole (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-4358?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=44637#comment-44637 ] 

Steve Ebersole commented on HHH-4358:
-------------------------------------

Also, the concern over changing this has nothing to do with whether something is specified in the spec.  So again you are completely misunderstanding.  The concern is about changing the way existing applications behave as I already stated.  The *only reason* the JPA spec came up in this discussion was because we (the developers) said that the only way we would move away from this as the default behavior was if the JPA spec mandated this behavior.  And it does not.

> Having to use @ForceDiscriminator kind of breaks JPA compatibility
> ------------------------------------------------------------------
>
>                 Key: HHH-4358
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4358
>             Project: Hibernate Core
>          Issue Type: Improvement
>          Components: annotations
>         Environment: JPA
>            Reporter: Steve Ebersole
>            Assignee: Steve Ebersole
>              Labels: jpa2
>             Fix For: 4.0.1
>
>
> According to
> http://opensource.atlassian.com/projects/hibernate/browse/ANN-36
> @ForceDiscriminator was created as a quick workaround to a problem.
> Yes, it solves the problem, but it creates a new problem:
> the source code which previously had only JPA annotations, now need to be annotated by a Hibernate annotation,
> causing that the the source code is now unable to use just any JPA provider.
> Major portability issue!
> Everyone who likes Open Source, hates Lock-Ins!
> My proposal: change the default to a more sane force=true, so that @ForceDiscriminator will not be needed for general JPA projects.
> (And create a @DisableDiscriminator Hibernate annotation, for those who like to brake their code).
> If changing default behavior is risky, don't fix this on older versions, but lets change this from 3.5.0-Beta2.

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