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java.ecore Metamodel Type/TypeAccess [message #662590]

Thu, 31 March 2011 09:01

Rob

Messages: 17
Registered: February 2011

Junior Member

Hello again! Smile

I am not quite sure if I should ask the following here or in the M2M ATL Forum, but as I have a problem with ATL Rules on the java.ecore Metamodel which comes with MoDisco I think it should be ok here.

I created a java.ecore based app model with Modisco Reverse Engineering and used ATL to extract some information from this model.
I am running into a problem which maybe one of you guys can clearify.

Let's have some lazy rules say:

lazy rule F2F {
	from
		s: Java!FieldDeclaration
	to
		t : Java!FieldDeclaration (
			type <- thisModule.TA2TA(f),
		)
}

lazy rule TA2TA {
	from
		f: Java!TypeAccess
	to
		t : Java!TypeAccess (
			type <- if (f.type.type.oclIsKindOf(Java!PrimitiveTypeVoid))
.....

The rules work so far for Parameters (SingleVariableDeclaration) and FieldDeclarations.

But am not quite sure, why I have to access type twice here - but this way the checks work - although I can not figure it out from the metamodel. From my understanding it should work with f.type.olcIsKindOf ...

the same code works for Parameters (i.e. SingleVariableDeclarations)

but when I try to transfer returnType in MethodDeclaration I get an error, that type is not valid for MethodDeclaration.

Maybe I am missunderstanding some concepts of ATL or something in the java.ecore Metamodel. But I dig through the Metamodel and from my point of view it should not matter whether it is type in SingleVariableDeclaration/AbstractVariablesContainer or returnType in MethodDeclaration.

Any hints would be appreciated.

many thx in advance,
Rob

[Updated on: Thu, 31 March 2011 09:13]

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