Just some thoughts off the top of my head:
        
        
          - Why not add the connection when you create the instances
            of A and B?
- Alternatively, you could probably add a NAC to your
            connection-creating rule to make sure the connection doesn't
            already exist.
Best regards,
        Steffen
        
        
        On 23/05/2017 11:24, Juergen Freund
          wrote:
        
         Dear Henshin Users and Developers,
          
          
          I have problem with rules which I am not able to solve.
          
          I want to create 50 instances of a class A and 50 instances of
          a class B.
          
          After that is done I want to connect all of them in a separate
          rule. And I only want them to connect only once. 
          Which means in the end there should be 50 edges more in the
          graph.
          
          So what I have done:
          
          
            - Rule to create class A and class B
- Iterated Unit which calls the rule above 50 times.
Now is the part I don't know haw to do it right.
          
            - Rule which creates an edge between a preserved A and a
              preserved B --> only one single connection is added
- Amalgamation Rule which creates an edge between a
              preserved* A and a preserved* B --> each a has 50
              connections to each B
I added the project with my examples. It would be nice if
            you could me out.
          
          
          Kind regards,
          Jürgen
          
          
          -- 
Dipl.-Ing. Jürgen Freund
Arbeitsgruppe Ähnlichkeitsmechanik
Telefon: +49 (0)711 685 69530
E-Mail:  freund@xxxxxxxxxxxxxxxxxxxx
Postadresse:
Universität Stuttgart
Institut für Statik und Dynamik der Luft- und Raumfahrtkonstruktionen
Pfaffenwaldring 27 - Zimmer 01.002
70569 Stuttgart
          
          
          
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        -- 
Dr. rer. nat. Steffen Zschaler AHEA
Senior Lecturer
King's College London
Department of Informatics
Email szschaler@xxxxxxx
Phone +44 (020) 7848 1513
WWW   http://www.steffen-zschaler.de/
        
        
        
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