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From "Kevin Sutter (JIRA)" <>
Subject [jira] [Commented] (OPENJPA-646) JDK problems with defineClass and enum class types
Date Tue, 23 Jul 2013 16:34:49 GMT


Kevin Sutter commented on OPENJPA-646:

Are you indicating that the fix for this JIRA is related to the JDK 7 issue you are tracking
with OpenJPA-2399?  The last comment on the dev mailing list indicated that you couldn't get
different results for JDK 6 and 7 with this testcase.  Can you clarify what you changed and
what you are experiencing now?  I'm not questioning that some problems exists with JDK 7 usage,
but I'm trying to figure out how or what aspect of this JIRA is related.  Thanks.
> JDK problems with defineClass and enum class types
> --------------------------------------------------
>                 Key: OPENJPA-646
>                 URL:
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: kernel
>    Affects Versions: 1.2.0
>            Reporter: Kevin Sutter
>            Assignee: Kevin Sutter
>             Fix For: 1.2.1, 1.3.0
>         Attachments: openjpa-646.patch,
> This Issue was first presented on our dev mailing list:
> I have also shared some additional experiences with Abe to get his views, but haven't
heard anything back yet.  So, I will create this JIRA Issue and work it from there.
> The original problem was limited to the Sun JDK.  But, in a soon-to-be-available update
to the IBM JDK, the same problem surfaces.  At least the same exception is presented.  The
actual call stack is different due to the different Sun and IBM packages, but it's a similar
> Basically, we are having a problem with our TempClassLoader attempting to use the defineClass()
method on the CascadeType enum class.  Our javax.persistence.CascadeType version doesn't experience
this problem because we use Class.forName() to load the javax classes.  In this scenario,
I have an alt.persistence.CascadeType that falls into our normal class definition processing
and attempts to use defineClass().  This method invocation completes okay.  But, later when
our code attempts to access the metadata associated with this type, we get the ArrayStoreException
from the JDK.
> I will post both a simple project that reproduces the problem as well as a "hack" patch
that gets us around the problem.  I also have a PMR opened against the IBM JDK to see if they
can help resolve it.
> Kevin

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