[news.eclipse.modeling.gmf] Re: Link Mapping - Constraint for one Link

[Madanagopal <madanagopal@xxxxxxxxx>]

Hallo Alex,

the enclosed projects are not the said ones. Please ignore them. Find the  
actual ones as an attachment with this mail.
Madanagopal

On Thu, 07 Sep 2006 12:27:14 +0200, Madanagopal <madanagopal@xxxxxxxxx>  
wrote:

> Hallo Alex,
>
> I plan to create a diagram as enclosed.
>
> the rectangles specified inside the input messageContainer represents the
> Class message. Since i do like to write a constraint to specify tath the
> number of messages should be equal in both the containers from the
> Aggregator Context;
> my constraint would be like;
>
> Context AggregatorContainer
> inv: self.inputMessageChannel.srcMessageContainer.message->size() =
> self.outputMessageChannel.destMessageContainer.message->size()
>
> Since i need to navigate through associations to both the containers i
> specify them in a bidirectional associations.
>
> When i specified the constraint to prevent more that one linkmapping
> ;which you have specified in your previous reply , i receive a validation
> error and i have changed all the associations into bidirectional one; But
> still i get the below error
>
> "Diagnosis of
> org.eclipse.gmf.codegen.gmfgen.impl.GenEditorGeneratorImpl@f379b8{platform:/resource/org.madan.sts1.eaipattern/model/eaipattern5.gmfgen#/}
>    Invalid expression body
> 'self.outputMessageChannel2AC->collect(m|m.destMessageContainer =
> oppositeEnd)->size() = 0'. Cause: Invalid expression body
> 'self.outputMessageChannel2AC->collect(m|m.destMessageContainer =
> oppositeEnd)->size() = 0'. Cause: ERROR in (variableExpCS): (Unrecognized
> variable: (outputMessageChannel2AC))" which is ofcourse present in the
> ecore.
>
> I have enclosed my project for your reference.
>
> And; when i evaluate a constraint at AggregatorContainer context i get  
> the
> number of Links drawn between this AggregatorContainer and
> MessageContainer as one inspite of having two of them.
>
> Please shower some more light on this problem.
>
> Regards,
> Madanagopal.
>
>
>
> On Wed, 06 Sep 2006 15:27:41 +0200, Alex Shatalin <vano@xxxxxxxxxxx>  
> wrote:
>
> > Hello Madanagopal,
> >
> >
> > > 1. Can you suggest a constraint that allows user to draw only one
> > > valid link mapping between the two classes.
> > Try something similar to the following source end constraint:
> > self.outputMessageChannel->collect(m|m.destMessageContainer =
> > oppositeEnd)->size() = 0
> >
> > This was written for messageChannel link from AggregatorContainer to
> > MessageContainer. BTW, don't you think about creating two different
> > meta-model objects for message links drawn in different directions?
> >
> > > 2. What is the purpose of "Feature Seq Initializer" in link mapping.?
> > > Please find my snapshot of my metamodel as well.
> >   Take a look on:
> > http://wiki.eclipse.org/index.php/GMF_Tutorial_Part_2#Feature_Initializers
> >
> > -----------------
> > Alex Shatalin

Attachment: org.madan.sts1.eaipattern__.zip
Description: Zip archive