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Unifying Connections/Links [message #703556]

Wed, 27 July 2011 13:29

Eclipse User

Hi all,

I got a question on defining special kinds of links and I'm hoping for your professional help.

Consider the following use case:
Nodes: A, B, C, X
Edges/Links: A-X, B-X, C-X

My question is, if there is any possibility to bundle these links within a kind of connector?

So instead of:
       A
        \
         \
B ----- X
         /
        /
      C

I'm looking for something like this (where O is a kind of connector):

    A
     \
      \
B ---O---- X
       /
      /
    C

(Its important that each link have a semantic source and target, so that the link A-X still holds the source A and target X.)

Hope anyone had a good idea.

regards

[Updated on: Wed, 27 July 2011 15:19] by Moderator

Re: Unifying Connections/Links [message #703871 is a reply to message #703556]

Wed, 27 July 2011 22:15

Eclipse User

As ur diagram shows, i think u have to create 4 transition among the nodes.
A-O, B-O, C-O, X-O.

Re: Unifying Connections/Links [message #704581 is a reply to message #703871]

Thu, 28 July 2011 16:07

Eclipse User

Thanks for your reply.

But I do not want to model 'O' as a node or eClass because it has not a semantic meaning.
The 'O'-point (or connector) is actually needed for syntactic correctness of the graphical model.
So im looking for a way to get this 'O' as decorator or so...

Any suggestions?

Re: Unifying Connections/Links [message #704927 is a reply to message #704581]

Fri, 29 July 2011 04:20

Eclipse User

I'm not a GMF expert, but there is no connector like your O.
If you refer to the basic graph theory, on your scheme O is a node, as A B C and X.
Create a node O to link everything is, i think, the best solution.

The other solution should be to modifiy the diagram code to redraw A--W, B--X and C--X when you add a new connection.

Re: Unifying Connections/Links [message #704933 is a reply to message #704927]

Fri, 29 July 2011 04:38

Eclipse User

Hi,

maybe you are looking for this:

http://www.eclipse.org/forums/index.php/m/643782/#msg_643782

Unfortunatly I did not get it running. I opened a bug on this. Please comment with your need https://bugs.eclipse.org/bugs/show_bug.cgi?id=331868.

Ralph

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