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xmi model of ecore to xtext model [message #1707607]

Mon, 07 September 2015 21:51

Saeed Tajfar

Messages: 5
Registered: September 2015

Junior Member

Hello,
I have an xmi made by ATL and I need to transform it into xtext model.
I tried the following code:
public static void runme(){

Injector injector = new MyDslStandaloneSetup().createInjectorAndDoEMFRegistration();

ResourceSet xmiResourceSet=injector.getInstance(ResourceSet.class);
XMIResource xmi_resource=(XMIResource)xmiResourceSet.getResource(URI.createURI("NewEClass1.xmi"), true);

ResourceSet xtext_resourceSet=injector.getInstance(ResourceSet.class);

Resource textualModel_resource =(Resource)xtext_resourceSet.createResource(URI.createURI("test.mydsl"));
textualModel_resource.getContents().add(xmi_resource.getContents().get(0));
//EcoreUtil.resolveAll(textualModel_resource);

System.out.println(URI.createURI(""));

try {
textualModel_resource.save(null);
} catch (IOException e) {
// TODO Auto-generated catch block

e.printStackTrace();
}

}

but it gives me the following error, when it wants to save *.mydsl file:

Exception in thread "main" java.lang.NullPointerException
at org.eclipse.xtext.serializer.analysis.GrammarConstraintProvider$Constraint.hashCode(GrammarConstraintProvider.java:309)
at java.util.HashMap.hash(HashMap.java:362)
at java.util.HashMap.put(HashMap.java:492)
at org.eclipse.xtext.serializer.analysis.GrammarConstraintProvider.filterDuplicateConstraintsAndSetNames(GrammarConstraintProvider.java:1252)
at org.eclipse.xtext.serializer.analysis.GrammarConstraintProvider.getConstraints(GrammarConstraintProvider.java:1462)
at org.eclipse.xtext.serializer.sequencer.ContextFinder.initConstraints(ContextFinder.java:235)
at org.eclipse.xtext.serializer.sequencer.ContextFinder.findContextsByContentsAndContainer(ContextFinder.java:177)
at org.eclipse.xtext.serializer.impl.Serializer.getContext(Serializer.java:114)
at org.eclipse.xtext.serializer.impl.Serializer.serialize(Serializer.java:107)
at org.eclipse.xtext.serializer.impl.Serializer.serialize(Serializer.java:133)
at org.eclipse.xtext.resource.XtextResource.doSave(XtextResource.java:354)
at org.eclipse.emf.ecore.resource.impl.ResourceImpl.save(ResourceImpl.java:1430)
at org.eclipse.emf.ecore.resource.impl.ResourceImpl.save(ResourceImpl.java:999)
at org.xtext.example.mydsl.myXmi2Xtextgenerator.runme(myXmi2Xtextgenerator.java:67)
at org.xtext.example.mydsl.myXmi2Xtextgenerator.main(myXmi2Xtextgenerator.java:45)

but, I do not know where the problem is.

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Re: xmi model of ecore to xtext model [message #1707701 is a reply to message #1707607]

Tue, 08 September 2015 14:53

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

can you share a minimal grammar and example xmi

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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