Re: [henshin-dev] Multiplicity Contraint for Edges

[Andreas Drobisch <eclipse@xxxxxxxxxxx>]

I want to match the gateways which have only one "incoming" 
SequenceFlow reference.  I did an intermediate step and wanted to 
forbid the match of exclusive gateways with a incoming sequence flow, 
but thats not working (see attached image), the node will always be 
created.

I am I missing something here? My other "forbid" works as expected.

On Wed 18 Jul 2012 03:43:08 PM CEST, Christian Krause wrote:
> Hi Andreas,
>
> On 07/18/2012 03:21 PM, wp1101223-androbit wrote:
> > Hi Henshin Devs,
> >
> > first of all: Henshin is great :) . Currently I am trying to use it
> > to transform BPMN models to a graph exchange format.
>
> Thanks.
>
> > I have managed the basic parts and now I am little bit stuck on
> > checking the multiplicity of edges. Is it possible to have an
> > contraint on the number of matching edges / nodes (see attached image)?
>
> I am not 100% sure whether this is what you want to do, but if you
> want to make sure that there exists only one SequenceFlow object with
> a reference to the ExclusiveGate node, you can change the SequenceFlow
> action to <<preserve>> (for the reference as well), and then add a
> second SequenceFlow node and reference with the action <<forbid>>.
>
> You can find a similar example here:
> http://wiki.eclipse.org/Henshin_Trace_Model -- the difference is
> though that in this case Trace objects are created only if they do not
> exist yet. In your case you want to forbid the application if there is
> at least one such object already.
>
> I hope this helps. Let us know if this is not what you are trying to
> achieve.
>
> Cheers,
> Christian
>
> > Best Regards,
> >
> > Andreas
> >
> >
> >
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>
>
>
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