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From "Aaron Mulder" <>
Subject Re: JPA Plugin Status
Date Mon, 14 Aug 2006 13:33:40 GMT
I'm open, but how do you set up the class path if the vendor needs
more than a single JAR?  I don't think it's so onerous to write a
single glue class when there are only a handful of vendors out there,
but I'm certainly willing to revisit it.


On 8/14/06, Jeff Genender <> wrote:
> Aaron,
> Why do you need to have vendor code?  Why can't this be a bit more
> dynamic?  Long term, I think its a bad idea to have to declare a vendor
> wrapped API when our competitors just need to dump the provider jars in
> a directory somewhere or include them in a deployment.  Basically,
> anyone who wants to use a provider that we haven't supported has to
> write vendor G-only code...right?  If this is the case, I think that is
> a bit burdensome.  Thoughts?
> Jeff
> Aaron Mulder wrote:
> > The code for the app-managed-JPA-for-web-apps plugin is up at SVN
> >
> >
> > So far, it's just got a TopLink provider, but if people want to copy
> > that to create providers for Cayenne or OpenJPA or whatever, that
> > would be great.  It basically just needs to have a customized name and
> > ClassPath, though I'm assuming any provider we integrate with will be
> > compatible with the Geronimo JPA spec JAR (currently
> > org.apache.geronimo.specs/geronimo-jpa_3.0_spec/1.0-SNAPSHOT/jar)
> >
> > If you try to build and run this, you'll be held up by a couple things:
> > * It needs the latest car-maven-plugin, and I'm not sure whether
> > Jason has pushed a fresh snapshot since the last changes to it
> > * It needs Geronimo 1.1 CARs in the M2 repo, and Matt has said
> > posting those is on his to-do list
> > * It only runs in Geronimo 1.1.1 due to reference resolution bugs in
> > G 1.1, and currently the G 1.1.1 build is broken
> >
> > But if you get past all that (or comment out the plugins child from
> > the main POM to avoid the first two issues) and run your server under
> > Java 5, you can deploy web apps using JPA.  :)
> >
> > My goal is to have a release of this plugin with sufficient user
> > documentation when G 1.1.1 is released.  It would be great to have
> > some open source JPA providers for that release too.
> >
> > I also started talking to David B about the JPA work being done in
> > OpenEJB, and I think we're agreed that we probably don't need two such
> > plugins for G 1.1.x, so hopefully we can work toward a unification as
> > we move forward.
> >
> > Thanks,
> >     Aaron

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