[news.eclipse.stp.sca-tools] Re: Extending the SCA Meta Model

[Damien Fournier <damien.fournier@xxxxxxxx>]

Hi Stéphane,

Stephane Drapeau a écrit :
> Hi Damien,
>
> Meta object Id values can be the same for different meta models.
> Could you clarify how are you doing to add the OSGi type?
Following the sca model extension guide, I've extended the SCA model 
with an osgi implementation in a new Ecore model.
This implementation has an EAttribute named "bundle". I've also added a 
DocumentRoot (EObject) which
has an EReference on the "OsgiImplmentation" (as explained in the 
extension guide)

Ecore and genmodel  files are accessible at

http://svn.forge.objectweb.org/cgi-bin/viewcvs.cgi/frascati/trunk/assembly-factory/model/org.ow2.frascati.model.osgi/model/

This metal model has a different namespace of existing FraSCAti meta 
model (http://frascati.ow2.org/osgi).

If Meta object Id values can be the same for different SCA model 
extensions, then how to make distinction between
two different implementations or bindings ? For instance when calling 
getImplementation() on a SCA Component, how
to know if this component is implemented with  java, spring, bpel, etc ?

Thanks

Damien

> If your OSGi type is defined in a new meta model (plugin), this meta 
> model can't reuse the FraSCAti namespace.
> If you want to use the FraSCAti namespace, you must add the OSGi 
> implementation type directly in the FraSCAti meta model and then 
> regenerate the code.
>
> Regards,
>
> Stéphane
>
> Damien Fournier a écrit :
> > Hi All,
> >
> > I'm trying to extend the SCA meta model by adding a new 
> > implementation type (currently an implementation.osgi element 
> > specific for the OW2 FraSCAti platform).
> >
> > My extension integrates with the core sca metal model, but I still have
> > an issue with meta object id, when generating java code for this model.
> >
> > The meta object id value for my OsgiPackage.OSGI_IMPLEMENTATION is 
> > set to "1" which is in conflict with existing 
> > FrascatiPackage.FRACTAL_IMPLEMENTATION
> >
> > Following FraSCAti and Tuscany model extension, meta objects ids seem
> > to be unique
> >
> > Thus, does anyone knows how to generate java code from a model 
> > extension without having conflict with meta object ids
> >
> > Thanks
> >
> > Damien