| Re: [henshin-dev] Programmatically executing out-place transformations |
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Hi Christian, Thank you for your answer. I ended up using the following solution, which seems to work without creating any unwanted duplicate elements in the target model: EGraph graph = new EGraphImpl(source); UnitApplication application = new UnitApplicationImpl(engine, graph, unit, null); application.execute(null); Resource target = resourceSet.createResource(targetURI.getPath()); target.getContents().clear(); target.getContents().addAll(source.getContents()); target.save(null); I am avoiding the InterpreterUtil helper method because I would like to use an ApplicationMonitor, and the helper method which supports an ApplicationMonitor
requires an Assignment as a parameter (instead of a Unit). I think (hope) that these two invocation methods are equivalent. Cheers, Vlad From: henshin-dev-bounces@xxxxxxxxxxx [mailto:henshin-dev-bounces@xxxxxxxxxxx]
On Behalf Of Christian Krause Hi Vlad, in the InterpreterUtil class there is a method called applyToResource (see links below). It collects all new root objects and adds them to the resource. It does not remove the input model though (unless you do this in your transformation).
You could copy the content of your transformed input resource to the resource of the output file and save it. In this step you could also do some filtering. So it would be something like this: Resource input = ... InterpreterUtil.applyToResource(unit, engine, input); Resource output = ... output.addAll(input.getContents()); <-- filter here if needed output.save(null); Best regards, Christian Javadoc:
http://download.eclipse.org/modeling/emft/henshin/javadoc/nightly/org/eclipse/emf/henshin/interpreter/util/InterpreterUtil.html#applyToResource(org.eclipse.emf.henshin.model.Unit, org.eclipse.emf.henshin.interpreter.Engine, org.eclipse.emf.ecore.resource.Resource) 2014-10-14 15:29 GMT+02:00 Vlad Acretoaie <rvac@xxxxxx>: Hi, I would like to invoke a Henshin transformation programmatically and save the target model in a different file than the source model (i.e. I would like my transformation to be out-place).
So far I was able to do this as follows, using the “ePackage” output parameter of my transformation: UnitApplication application = new UnitApplicationImpl(engine, graph, unit, null); application.execute(null); EPackage result = (EPackage) application.getResultParameterValue("ePackage"); resourceSet.saveEObject(result, "target.ecore"); So my question is: Is there a way of executing an out-place transformation without depending on the existence of an appropriate output parameter of the transformation? I would like
to simply save the entire target model, regardless if the transformation has any parameters or not. I suspect this is possible, since the Henshin Eclipse plug-in is able to do it when executing transformations using the GUI. Cheers, Vlad
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