Re: [eclipselink-dev] Use of Require-Bundle in EclipseLink OSGI bundles

[Mitesh Meswani <Mitesh.Meswani@xxxxxxx>]

Created bug https://bugs.eclipse.org/bugs/show_bug.cgi?id=236181

>I'm surprised that "system.bundle" is not available in Felix. It's a 
spec defined name that should be available in all implementations.
The bundle is indeed not available in Felix buy that symbolic name. I 
did some more reading and I think this is a bug in Felix.
BTW, I am curious why do we have a dependency in system.bundle?

Thanks,
Mitesh

Shaun Smith wrote:
> Hi Mitesh,
>
>    Can you enter a bug for this?
>
>    I'm surprised that "system.bundle" is not available in Felix. It's 
> a spec defined name that should be available in all implementations.
>
>       Shaun
>
> Mitesh Meswani wrote:
> > Current EclipseLink OSGI bundles use Require-Bundle Manifest entries. 
> > Following are the entries by bundle.
> >
> > >From org.eclipse.persisetnce.core.jar
> >
> >    Require-Bundle: 
> > javax.activation;resolution:=optional,javax.mail;resol
> >     
> > ution:=optional,org.eclipse.persistence.antlr;resolution:=optional,or
> >     
> > g.eclipse.persistence.asm;resolution:=optional,javax.ejb;resolution:=
> >     
> > optional,javax.jms;resolution:=optional,javax.resource;resolution:=op
> >     
> > tional,javax.transaction;resolution:=optional,javax.xml.stream;resolu
> >     tion:=optional,javax.persistence
> >
> > >From org.eclipse.persisetnce.jpa.jar
> >
> >    Require-Bundle: 
> > org.eclipse.persistence.core;visibility:=reexport,syst
> >     
> > em.bundle,javax.persistence;bundle-version="1.99.0";visibility:=reexp
> >     ort,javax.transaction
> >
> > >From org.eclipse.persisetnce.oracle.jar
> >
> >    Require-Bundle: 
> > org.eclipse.persistence.core;visibility:=reexport,java
> >     x.resource
> >
> > It is not good practice to use Require-Bundle. The bundles that 
> > referred above are not guaranteed to be available in all the 
> > environment that EclipseLink runs in. For example (i) system.bundle 
> > is not available under Felix. (ii) Various javax.* bundles above are 
> > not available under GlassFish. However, the packages that we want to 
> > import from those bundles are available under these environment. 
> > Using Import-Package instead is a better practice. See [1] and OSGI 
> > R4 Spec version 3.13.3 for more details.
> >
> > We should switch to using Import-Package.
> >
> > Thanks,
> > Mitesh
> >
> > [1] 
> > http://www.osgi.org/wiki/uploads/Conference/OSGiBestPractices.pdf, 
> > slide 14
> > _______________________________________________
> > eclipselink-dev mailing list
> > eclipselink-dev@xxxxxxxxxxx
> > https://dev.eclipse.org/mailman/listinfo/eclipselink-dev
>
> --
>
>
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