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Incquery - how to query the association relationship in UML [message #1758328]

Mon, 27 March 2017 13:06

Eclipse User

hi,

I am trying to use Incquery to query the content of UML file. However , I am not sure how to write the pattern for UML association relationship. Can you please advice on this.

@Edge(source = sub, target = sup, label = "impl")
@Format(color = "#0000FF", lineWidth = 1, lineStyle = "dashed")
pattern associationImpl(sub : Class, sup : Class) {
Property.Owner(IR,sub);
Property(IR);
Property.type(IR,sup);
}

Regards
Laila

Re: Incquery - how to query the association relationship in UML [message #1758345 is a reply to message #1758328]

Mon, 27 March 2017 16:28

Eclipse User

Hi,

I would start with the features of the Association class, such as Association.memberEnds to collect the two properties the association collects, and then navigate to the owners of said properties. As an example, look for the implementation of the related EndType derived feature of Association class of the UML metamodel [1].

[1] http://git.eclipse.org/c/viatra/org.eclipse.viatra.git/tree/integration/plugins/org.eclipse.viatra.integration.uml/src/org/eclipse/viatra/integration/uml/derivedfeatures/DerivedFeatures.vql#n468

Best regards,
Zoltán

Re: Incquery - how to query the association relationship in UML [message #1758392 is a reply to message #1758345]

Tue, 28 March 2017 07:28

Eclipse User

You could try out the Query by Example addon ( https://viatra.net/news/2016/7/introducing-viatra-query-by-example ), that helps specifically in exploring a metamodel and defining queries. Even better, the blog post uses UML as an example as well.

Re: Incquery - how to query the association relationship in UML [message #1758563 is a reply to message #1758392]

Thu, 30 March 2017 03:19

Eclipse User

Hi Zoltan,
Thanks for your reply..
I tried the following but it not seem to work, am I doing something wrong.
Also "propert.owner" is not seem to be supported by incquery.

@Edge(source = src, target = targ, label = "associate")
pattern association(src:Class , targ:Class){
Association(Ass_0);
find associationEndType(Ass_0,pro);
TypedElement.type(pro, targ);

Property.owner(pro,src);
}
pattern associationEndType(
self : Association,
pro : Property
) {
Association.memberEnd(self, pro);

}
salwa

[Updated on: Thu, 30 March 2017 03:40] by Moderator

Re: Incquery - how to query the association relationship in UML [message #1758661 is a reply to message #1758563]

Fri, 31 March 2017 07:02

Eclipse User

Hi,

What do you mean by not supported? Does it return an error message of it being a derived feature? In that case, have a look at the UML integration feature available in the IncQuery/VIATRA update site (see https://wiki.eclipse.org/VIATRA/Integration/UMLSupport).

Or is it some other kind of issue?

Zoltán

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