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Importing a model from a model [message #1804059]

Sun, 17 March 2019 03:02

Marshall Charron

Messages: 72
Registered: August 2018

Member

Hi everyone,

I have an EMF model A. Inside A I import a model B. The import is done using an attribute called path which a string containing the relative path to model B. I would like to use ATL to make a transformation of B with the information in A. The output models should be B models.

I am stuck with including model B in my ATL file. I use to retrieve the model programmatically using JAVA. But in ATL I don't know how to do that.

Do you think that this is achievable with ATL ?

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Re: Importing a model from a model [message #1804230 is a reply to message #1804059]

Wed, 20 March 2019 20:10

Dennis Wagelaar

Messages: 581
Registered: September 2012
Location: Belgium

Senior Member

ATL as a language isn't meant to deal with model loading and saving; that's the domain of EMF. EMF can resolve references between models automatically, with the only limitation that you have to refer to an element within the other model, instead of the model itself. I've attached an example, where models conforming to metamodel A can refer to models conforming to metamodel B. It works by using regular EReferences between EClasses of different metamodels.

Alternatively, you could generate an executable version of model A, that will run the transformation on the referenced B models. This executable version could be an Ant script, using the ATL or EMFTVM tasks, for example.