[gme-users] how to connect atoms in different models

[Akos Ledeczi]

Nicki,

Christian is right, you need to have the connection point to the 
reference. So, you probably have another issue such as not adding the 
connection itself to the aspect, if this does not help. BTW, an easy way 
to not having to worry about aspects for a while, is to delete your only 
aspect and then the metainterpreter will insert a default one for you 
and it'll also make sure that everybody is added to it.

Now, back to references. If you have an atom that shows up as a port of 
some model and you can make a connection to the model through that port 
than the same is true for a reference to the model. In that case, it is 
true that you make the connection to the atom in the metamodel and it'll 
work for models and references to those models as long as the atom is a 
port of them. But in your example, I do not see any indication that that 
is what you are trying to do. Again, if you are connecting directly to 
atoms and directly to references (not thru ports) than you need to have 
the connection in the meta allow both. We typically use an abstract fco 
in the metamodel, make the connection to it and have an atom and a ref 
to it inherit from the fco.

Hope this helps,
Akos


Nicki Lehmann Møller wrote:
> Hi Christian,
> 
> I'm quite sure that that is not the correct way to use references. 
> However I did try it but without any luck. Thanks for the suggestion 
> though :)
> 
> -Nicki
> 
> On 9/18/06, *Christian Brunette* <Christian.Brunette at irisa.fr 
> <mailto:Christian.Brunette at irisa.fr>> wrote:
> 
>     Hi,
> 
>     I think you have to put your connection between ReferenceToAtomB (not B)
>     and A.
> 
>     Christian
> 
>     Nicki Lehmann Møller wrote:
> 
>      > Hi all!
>      >
>      > Could someone please help me solve my little aspect problem and tell
>      > me how to connect atoms placed in different models.
>      > As can seen on my metamodel (see attachment) I've created a reference
>      > between the model-object (ModelA) and the "external" atom (AtomB)
>      > which means that I able to create the reference inside the
>      > model-object (ModelA). However when I'm using the metamodel and I try
>      > to create a connection between two atoms (AtomA and
>     ReferenceToAtomB)
>      > I get a paradigm violation stating that I cannot create a connection
>      > in the current aspect (WholeAspect). I know that this indicates that
>      > something is wrong with my aspect, but I have no clue on what
>     :(  Any
>      > suggestions are therefore greatly appreciated.
>      >
>      > --
>      > Kind Regards,
>      > Nicki
>      >
>     ------------------------------------------------------------------------
>      >
>      >------------------------------------------------------------------------
> 
>      >
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>      >
> 
>     --
>     Christian Brunette
>     Expert Engineer in the ESPRESSO team
>     IRISA-INRIA, Campus de Beaulieu, 35042 Rennes cedex, France
>     Phone: +33 (0) 2 99 84 72 31, Fax: +33 (0) 2 99 84 71 71
> 
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> 
> 
> 
> -- 
> Kind Regards,
> Nicki
> 
> 
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