Re: [eclipselink-users] EclipseLink Buddy Policy in OSGi

[Tom Ware <tom.ware@xxxxxxxxxx>]

Here is a useful example some of our classloader implementation is based on:

http://wiki.eclipse.org/index.php/BundleProxyClassLoader_recipe

amphoras wrote:
> Hi Shaun,
>
> Can you clarify this a little?  What is "thisClass"?  Is that the model
> object class?  My setup is that I have one bundle for the model classes and
> one bundle for some helper code that calls EclipseLink.  I don't think that
> I can pass the helper bundle's classloader into EclipseLink and have
> EclipseLink be able to see my domain classes.
>
> Thanks!
>
> Polly
>
>
>
> Shaun Smith wrote:
> > Hi Polly,
> >
> >     You need to give MOXy a classloader that can see your domain 
> > classes.   Try something like:
> >
> >             ClassLoader classLoader = thisClass.getClassLoader();
> >             JAXBContext jaxbContext = JAXBContext 
> > .newInstance("examples.jaxb.model", classLoader);
> >
> >       Shaun
> >
> > amphoras wrote:
> > > Hi,
> > >
> > > We've been trying to get EclipseLink MOXy to work in an OSGi environment
> > > in
> > > Equinox, and we found that in order to allow EclipseLink to instantiate
> > > our
> > > model objects, we need to set up a Buddy Policy.  
> > >
> > > We had to modify the EclipseLink manifest to say:
> > > Eclipse-BuddyPolicy: registered
> > >
> > > Then we edited the bundle containing our model objects to say:
> > > Eclipse-RegisterBuddy: org.eclipse.persistence.core
> > >
> > > This works, but I don't like tweaking files that belong to a third-party
> > > library.  It seems like everyone that uses Equinox would need the
> > > BuddyPolicy.  So will you be willing to add the "Eclipse-BuddyPolicy"
> > > entry
> > > to the EclipseLink manifest?  Or are we doing something wrong?  If
> > > there's a
> > > better way to solve this problem, please let me know.
> > >
> > > Thanks!
> > > Polly
> > >   
> > --
> >
> >
> > Oracle <http://www.oracle.com>
> > Shaun Smith | Principal Product Manager, TopLink | +1.905.502.3094
> > Oracle Fusion Middleware
> > 110 Matheson Boulevard West, Suite 100
> > Mississauga, Ontario, Canada L5R 3P4
> >
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