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https://issues.apache.org/jira/browse/OPENJPA-1860?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12926193#action_12926193
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Hugh commented on OPENJPA-1860:
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So I found out what a javaagent is, and I hooked my transformer into it and
registered one for the startup.
It doesn't do the trick. I can see it loads and is called for almost all
classes, but it never gets asked to transform the class I'm interested in.
Maybe it's the race condition you spoke of. Apparently M$ win this round.
There's no portable way to modify the @Table name attribute of an OpenJPA
Entity class at runtime using a javaagent.
To answer your other questions Kevin. I'm letting OpenJPA act as the java agent
at runtime. I don't convert them at build time. Would this make any difference?
My guess is that the @Table annotation would be stripped and I'd need to think
of a new way to modify the byte code. Any clues?
> How do I get OpenJPA to use my custom classloader to load Entity classes?
> -------------------------------------------------------------------------
>
> Key: OPENJPA-1860
> URL: https://issues.apache.org/jira/browse/OPENJPA-1860
> Project: OpenJPA
> Issue Type: Question
> Components: jpa
> Affects Versions: 2.0.1
> Environment: OpenJPA 2.0.1 Java 1.6-22
> Reporter: Hugh
>
> I have written a custom classloader and I can't work out how to get OpenJPA
> to use it to load my entity classes.
> I've followed instructions I found to set
> Thread.currentThread().setContextClassLoader() at startup before loading any
> EntityManager and it seems to load the OpenJPA classes and a lot of others,
> but not the class I'm interested in.
> Is this the right approach?
> If so, where have I gone wrong?
> (http://openjpa.208410.n2.nabble.com/Dynamic-Table-value-td5645906.html)
> If not, how should this be done?
> Is there some sort of guide to accomplishing this that someone could point me
> to?
> Thanks.
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