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How Can I draw just one of two opposite reference? [message #1749495]

Wed, 07 December 2016 11:52

Julio Sandobalin

Messages: 12
Registered: August 2013

Junior Member

Hi everyone,

I am working in build a DSL using Eugenia to make a graphical modeler. I need to use a opposite reference in the abstract metamodelo (below you can see the excerpt code):

@gmf.node
class Group {
  @gmf.link(target.decoration="none", style="solid")
  ref machine[*]#groups machines;
} 

@gmf.node
class Machine  {
  @gmf.link(target.decoration="none", style="solid")
  ref group[+]#machines groups;
}

I can model a machine and group and then I make the link(reference) between them (I can use either "ref machine[*]#groups machines" or "ref group[+]#machines groups"). Due to I am using opposite references when I just make a reference and after I close and re-open the model, then automatically the other reference is drawn. I just need to draw a reference regardless of whether there are two oposite references in the metamodel. Do you know how can I do it?

In advance thank you for your help

Greetings,

Julio Sandobalin

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Re: How Can I draw just one of two opposite reference? [message #1749499 is a reply to message #1749495]

Wed, 07 December 2016 12:15

Dimitris Kolovos

Messages: 2163
Registered: July 2009
Location: York, UK

Senior Member

Hi Julio,

Would removing the second @gmf.link annotation do the trick?

Cheers,
Dimitris

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Re: How Can I draw just one of two opposite reference? [message #1749517 is a reply to message #1749499]

Wed, 07 December 2016 16:55

Julio Sandobalin

Messages: 12
Registered: August 2013

Junior Member

Hi Dimitris,
Thanks for your reply. I have tried to use only one reference (instead of two opposite reference) but I need to put these two reference to accomplish requirements that I want to achieve with my DSL. I have tried with EOL files. However, I do not know how can I draw these two opposite references like if they were a single reference on the diagram. Moreover, on the diagram this is useful for the usability because I can to make a link between nodes in two ways (e.g. from Group to Machine and from Machine to Group). I do not know whether it is possible.

Greetings,
Julio.

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