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[ATL] inverse function of refImmediateComposite() [message #88085]

Mon, 11 August 2008 11:27

Eclipse User

Hi all,
my question is pretty easy and basic:

Does a metamodel-independent inverse of the operation
RefImmediateComposite() exists??

i.e. an operation of the form refChildren() : Sequence(OclAny)
returning all the elements contained by self.

Regards,
Ivano

Re: [ATL] inverse function of refImmediateComposite() [message #88114 is a reply to message #88085]

Mon, 11 August 2008 12:35

Eclipse User

..eContents()

Regards,

Alfons

"Ivano" <ivanomalavolta@yahoo.it> schreef in bericht
news:g7plpi$qkd$1@build.eclipse.org...
> Hi all,
> my question is pretty easy and basic:
>
> Does a metamodel-independent inverse of the operation
> RefImmediateComposite() exists??
>
> i.e. an operation of the form refChildren() : Sequence(OclAny)
> returning all the elements contained by self.
>
> Regards,
> Ivano

Re: [ATL] inverse function of refImmediateComposite() [message #548425 is a reply to message #88085]

Wed, 21 July 2010 14:50

Eclipse User

What about a function that sets the immediate container of a model element?

What I'm doing is building a .uml file by means of a transformation. My source .uml file contains a <Model> element that, in turn, contains a <Class> element, so I want my .atl file to generate the corresponding <Model> and <Class> elements and to make the <Model> element to contain the <Class> element in the target .uml file. So far both elements seem to be unrelated and placed at the top level in the containment hierarchy of the target .uml file.

Thanks for your help. Kindest regards.

Re: [ATL] inverse function of refImmediateComposite() [message #548475 is a reply to message #548425]

Wed, 21 July 2010 23:37

Eclipse User

I found the solution to my problem. Once the transformation has instantiated the Model meta-class in the target .uml file it must instantiate the Class meta-class and set the containment relationship using the following code:

rule models {
	from
			source: profileA!Model
	to
			target: profileB!Model (
				name <- 'bclass_model'
			)
}

rule classes {
	from
			source: profileA!Class
	to
			target: profileB!Class (
				name <- 'Target',
				package <- source.package
			)
}

The setting of the package attribute does the trick to establish the containment relationship. Do not try to set either the owner or the namespace attributes of the metaclass because ATL considers this as an error, perhaps because such attributes are derived acording to the documentation,

Kindest regards.

Re: [ATL] inverse function of refImmediateComposite() [message #548496 is a reply to message #88085]

Thu, 22 July 2010 03:46

Eclipse User

You can also set the eOpposite reference to package so that you get the binding on the Model element instead of the Class element which is maybe more understandable but both works :

rule models {
	from
			source: profileA!Model
	to
			target: profileB!Model (
				name <- 'bclass_model',
				packagedElement <- source.packagedElement
			)
}

rule classes {
	from
			source: profileA!Class
	to
			target: profileB!Class (
				name <- 'Target'
			)
}

[Updated on: Thu, 22 July 2010 03:50] by Moderator

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