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Combine / Concatenate matched rules of two modules [message #1722024]

Tue, 02 February 2016 05:18

Eclipse User

Hello,

I'm dealing with ATL (EMFTVM) for some weeks now and made several
transformations between meta models. Most of the modules transform
metamodels from or to UML.

I have a module which defines rules for the transformation of meta model
M1 to UML (M1->UML) and another module which defines rules for the
transformation from UML to meta model M2 (UML->M2).

Now, I need a transformation from M1 to M2 (M1->M2). Currently, I get
this by first do the transformation from M1 to UML and then take the
output resource as input resource for UML to M2 ((M1->UML)->(UML->M2)).

My question is: Is it possible to define a module for M1 to M2 which
uses M1ToUML and UMLToM2 (M1->UML->M2)? How would rules in this module
look like to reuse the rules from the other modules?

Thank you very much in advance.

Cheers,
Joachim

Re: Combine / Concatenate matched rules of two modules [message #1725105 is a reply to message #1722024]

Mon, 29 February 2016 15:15

Eclipse User

ATL does not allow this by design: you cannot build intermediate model states within a single ATL transformation. Because you only need a constant amount of intermediate states (only one), you can use a model transformation chain. With EMFTVM, you can use the EMFTVM-specific Ant tasks to achieve that. Using Ant, you can pass the intermediate model in-memory from the M1-to-UML transformation to the second UML-to-M2 transformation. See https://wiki.eclipse.org/ATL/EMFTVM#Ant

Re: Combine / Concatenate matched rules of two modules [message #1728000 is a reply to message #1725105]

Wed, 30 March 2016 03:29

Eclipse User

I see. Thank you for your answer.
We actually did it by Java API, but also with passing the output model
from the first transformation as input for the second transformation.
I feel even good to know, that I didn't miss something which would make
it work as I thought.

Best wishes,
Joachim

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