Re: [mdr-users] Clustering extents managed by non-MDR repositories

Hi Pieter,
this is a limitation of MDR.
Martin

Pieter Van Gorp wrote:
> Hi all,
> is it possible to cluster extents managed by non-MDR repositories?
> 
> More specifically, we're trying to create a cluster of the UML extent
> in MagicDraw 10.  If you look at the interfaces of MagicDraw and MDR,
> everything seems fine.  However, we've just encountered a class cast
> exception on line 752 of NBMDRepositoryImpl, which contains:
> Object result =
> packages.put(((BaseObjectHandler)pkg.refMetaObject())._getDelegate().getMofId(),
> pkg);
> 
> This raises:
> java.lang.ClassCastException: com.io_software.catools.tas.mof.model.PackageImpl
> 	at org.netbeans.mdr.NBMDRepositoryImpl.collectPackageInstances(NBMDRepositoryImpl.java:752)
> 	at org.netbeans.mdr.NBMDRepositoryImpl.createExtent(NBMDRepositoryImpl.java:466)
> 	at org.netbeans.mdr.NBMDRepositoryImpl.createExtent(NBMDRepositoryImpl.java:292)
> 	at org.segravis.icons.helper.Driver.loadClusteringExtent(Driver.java:196)
> 
> Reading the source, it seems like our MDR/MagicDraw integration will
> not work since  the MagicDraw classes do not implement internal MDR
> classes like BaseObjectHandler.  Is this a fundamental limitation of
> MDR or are we overlooking something?
> 
> Note that we've passed MagicDraw's repository as the single element of
> the RefPackage array argument to createExtent.  On a type level,
> that's OK but it's at the dynamic type cast that things go wrong...
> 
> Thanks in advance,
> --
> Pieter Van Gorp
>        Teaching and Research Assistant
>        FOrmal Techniques in Software engineering (FOTS)
>        University of Antwerp
>        Middelheimlaan 1
>        2020 Antwerpen - Belgium
>        Office: G.304
>        Phone: +32 3 265 38 71
>        Fax: +32 3 265 37 77
>        http://www.fots.ua.ac.be/~pvgorp/research/
>        http://motmot.sourceforge.net/
> 
> ``A man has to live with himself, and he should see to it that he
> always has good company [Charles Evans Hughes]''