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Splitting to multiple resources [message #703057]

Wed, 27 July 2011 01:39

Eclipse User

Hi,

The model content is created programatically, in the final step I would like to split the content to multiple xtext resources.
The grammar defines Package as top-level element and initally the model consist a single Package with multiple Modules. For each new resource, I create a new Package and put the corresponding Module there.

This does not work, exception is thrown 'java.lang.RuntimeException: No EObjectDescription could be found is Scope ...'.

If I save to a single resource, all works fine. I guess references are broken. Any idea? Thanks!

ResourceSet resourceSet = new ResourceSetImpl();
for (AbstractPackageElement element : package.getElements()) {
  if (element instanceof Module) {
    Module moduleElement = (Module) element;
    Resource resource=resourceSet.createResource(moduleElement.getName() + ".tsx");

    Package container = Factory.eINSTANCE.createPackage();
    container .getElements().add(moduleElement);

    resource.getContents().add(container);

    try {
        resource.save(null);
    } catch (IOException e) {
	e.printStackTrace();
    }
}

Re: Splitting to multiple resources [message #703716 is a reply to message #703057]

Wed, 27 July 2011 17:04

Eclipse User

Hi,

in which context do you execute this? (eclipse/standalone)
what is the exact error message you get?
if standalone: to you call the standalonesetup of your dsl
which serializer do you use?

~Christian

Re: Splitting to multiple resources [message #703722 is a reply to message #703716]

Wed, 27 July 2011 17:13

Eclipse User

Hi,

and if you have cross refs you have to split resource creation and saving

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.xtext.example.mydsl.MyDslStandaloneSetup;
import org.xtext.example.mydsl.myDsl.Module;
import org.xtext.example.mydsl.myDsl.MyDslFactory;

public class Main {

	public static void main(String[] args) {
		org.xtext.example.mydsl.myDsl.Package p = MyDslFactory.eINSTANCE
				.createPackage();
		p.setName("p1");
		Module m1 = MyDslFactory.eINSTANCE.createModule();
		Module m2 = MyDslFactory.eINSTANCE.createModule();
		Module m3 = MyDslFactory.eINSTANCE.createModule();
		m1.setName("m1");
		m2.setName("m2");
		m3.setName("m3");
		m1.setRefs(m2);
		m2.setRefs(m3);
		m3.setRefs(m1);
		p.getModules().add(m1);
		p.getModules().add(m2);
		p.getModules().add(m3);

		MyDslStandaloneSetup.doSetup();
		ResourceSet resourceSet = new ResourceSetImpl();
		List<Resource> tbs = new ArrayList<Resource>();

		List<Module> modules = new ArrayList<Module>();
		modules.addAll(p.getModules());

		for (Module moduleElement : modules) {
			Resource resource = resourceSet.createResource(URI
					.createURI(moduleElement.getName() + ".mydsl"));

			org.xtext.example.mydsl.myDsl.Package container = MyDslFactory.eINSTANCE
					.createPackage();
			container.setName(moduleElement.getName() + "_package");
			container.getModules().add(moduleElement);

			resource.getContents().add(container);
			tbs.add(resource);

		}

		for (Resource r : tbs) {
			try {
				r.save(null);
			} catch (IOException e) {
				e.printStackTrace();
			}
		}

	}

}

~Christian

Re: Splitting to multiple resources [message #704057 is a reply to message #703722]

Thu, 28 July 2011 04:33

Eclipse User

Thanks Christian!

Running in eclipse, inside a wizard which calls a service to retrieve the model content from a DB. Xtext is initialized correctly, see stack trace.

I am trying out now the splitting of creation and saving.

Caused by: java.lang.RuntimeException: No EObjectDescription could be found in Scope Typedef.maps for Package.elements[75]->Module'Platform_Types'.elements[13]->Typedef'uint'
Semantic Object: Package.elements[0]->Module'Adc'.elements[0]->Typedef'Adc_ChannelType'
	at org.eclipse.xtext.serializer.diagnostic.ISerializationDiagnostic$ExceptionThrowingAcceptor.accept(ISerializationDiagnostic.java:66)
	at org.eclipse.xtext.serializer.tokens.CrossReferenceSerializer.getCrossReferenceNameFromScope(CrossReferenceSerializer.java:143)
	at org.eclipse.xtext.serializer.tokens.CrossReferenceSerializer.serializeCrossRef(CrossReferenceSerializer.java:116)
	at org.eclipse.xtext.serializer.sequencer.GenericSemanticSequencer.acceptSemantic(GenericSemanticSequencer.java:626)
	at org.eclipse.xtext.serializer.sequencer.GenericSemanticSequencer$AllocationValue.accept(GenericSemanticSequencer.java:98)
	at org.eclipse.xtext.serializer.sequencer.GenericSemanticSequencer$Quantity.accept(GenericSemanticSequencer.java:348)
	at org.eclipse.xtext.serializer.sequencer.GenericSemanticSequencer$GroupAllocation.accept(GenericSemanticSequencer.java:195)
	at org.eclipse.xtext.serializer.sequencer.GenericSemanticSequencer$Quantity.accept(GenericSemanticSequencer.java:348)
	at org.eclipse.xtext.serializer.sequencer.GenericSemanticSequencer.createSequence(GenericSemanticSequencer.java:774)
	at mydsl.serializer.AbstractTsxSemanticSequencer.sequence_Typedef_Typedef(AbstractTsxSemanticSequencer.java:376)
	at mydsl.serializer.AbstractTsxSemanticSequencer.createSequence(AbstractTsxSemanticSequencer.java:150)
	at org.eclipse.xtext.serializer.sequencer.GenericSemanticSequencer.acceptEObjectRuleCall(GenericSemanticSequencer.java:609)
	at org.eclipse.xtext.serializer.sequencer.GenericSemanticSequencer.acceptSemantic(GenericSemanticSequencer.java:620)
	at org.eclipse.xtext.serializer.sequencer.GenericSemanticSequencer$AllocationValue.accept(GenericSemanticSequencer.java:98)
	at org.eclipse.xtext.serializer.sequencer.GenericSemanticSequencer$Quantity.accept(GenericSemanticSequencer.java:348)
	at org.eclipse.xtext.serializer.sequencer.GenericSemanticSequencer$GroupAllocation.accept(GenericSemanticSequencer.java:195)
	at org.eclipse.xtext.serializer.sequencer.GenericSemanticSequencer$Quantity.accept(GenericSemanticSequencer.java:348)
	at org.eclipse.xtext.serializer.sequencer.GenericSemanticSequencer.createSequence(GenericSemanticSequencer.java:774)
	at mydsl.serializer.AbstractTsxSemanticSequencer.sequence_Module_Module(AbstractTsxSemanticSequencer.java:256)
	at mydsl.serializer.AbstractTsxSemanticSequencer.createSequence(AbstractTsxSemanticSequencer.java:89)
	at org.eclipse.xtext.serializer.sequencer.GenericSemanticSequencer.acceptEObjectRuleCall(GenericSemanticSequencer.java:609)
	at org.eclipse.xtext.serializer.sequencer.GenericSemanticSequencer.acceptSemantic(GenericSemanticSequencer.java:620)
	at org.eclipse.xtext.serializer.sequencer.GenericSemanticSequencer$AllocationValue.accept(GenericSemanticSequencer.java:98)
	at org.eclipse.xtext.serializer.sequencer.GenericSemanticSequencer$Quantity.accept(GenericSemanticSequencer.java:348)
	at org.eclipse.xtext.serializer.sequencer.GenericSemanticSequencer$GroupAllocation.accept(GenericSemanticSequencer.java:195)
	at org.eclipse.xtext.serializer.sequencer.GenericSemanticSequencer$Quantity.accept(GenericSemanticSequencer.java:348)
	at org.eclipse.xtext.serializer.sequencer.GenericSemanticSequencer.createSequence(GenericSemanticSequencer.java:774)
	at mydsl.serializer.AbstractTsxSemanticSequencer.sequence_Package_Package(AbstractTsxSemanticSequencer.java:269)
	at mydsl.serializer.AbstractTsxSemanticSequencer.createSequence(AbstractTsxSemanticSequencer.java:101)
	at org.eclipse.xtext.serializer.impl.Serializer.serialize(Serializer.java:68)
	at org.eclipse.xtext.serializer.impl.Serializer.serialize(Serializer.java:80)
	at org.eclipse.xtext.serializer.impl.Serializer.serialize(Serializer.java:95)
	at org.eclipse.xtext.resource.XtextResource.doSave(XtextResource.java:286)
	at org.eclipse.emf.ecore.resource.impl.ResourceImpl.save(ResourceImpl.java:1406)
	at org.eclipse.emf.ecore.resource.impl.ResourceImpl.save(ResourceImpl.java:993)
...

Re: Splitting to multiple resources [message #704061 is a reply to message #704057]

Thu, 28 July 2011 04:36

Eclipse User

Hi,

just make sure:

add everything that is referenced to a resource in the resourceset.
then it will work.

In your case the typedefs may be missing

~Christian

Re: Splitting to multiple resources [message #704225 is a reply to message #704061]

Thu, 28 July 2011 07:58

Eclipse User

Hi,

Still not working. When the serializer hits a cross reference, it tries look in the scopes.

String getCrossReferenceNameFromScope(EObject semanticObject, CrossReference crossref, EObject target, final IScope scope, Acceptor errors)

Scope instance is ImportScope, which iterates on local elements and parents respectively.

My setup

Resource 1 file:/Adc.tsx -> Module Adc
Resource 2 file:/Platform_Types.tsx -> Module Platform_Types

An element [semanticObject] in Adc crossrefs [crossref] to an element [target] in Platfrom_Types. The problem is ImportScope does not contain any information on Platfrom_Types?

Thanks!

Re: Splitting to multiple resources [message #704236 is a reply to message #704225]

Thu, 28 July 2011 08:09

Eclipse User

So how does you code look like now?

Re: Splitting to multiple resources [message #704240 is a reply to message #704236]

Thu, 28 July 2011 08:11

Eclipse User

private void saveToFiles(MyDsl.Package pkg, String destination, IProgressMonitor monitor) throws InterruptedException {
		monitor.subTask("Creating files");
		ResourceSet resourceSet = new ResourceSetImpl();
		List<Resource> tbs = new ArrayList<Resource>();
		List<AbstractPackageElement> elements = new ArrayList<AbstractPackageElement>();
		elements.addAll(pkg.getElements());
		
		for (AbstractPackageElement element : elements) {
			if (element instanceof Module) {
				Module moduleElement = (Module) element;
				Resource resource = resourceSet.createResource(URI.createFileURI(destination + File.separator + moduleElement.getName() + ".tsx"));

				MyDsl.Package containerPkg = TsxFactory.eINSTANCE.createPackage();
				containerPkg.getElements().add(moduleElement);

				resource.getContents().add(containerPkg);
				tbs.add(resource);

				if (monitor.isCanceled())
					throw new InterruptedException("Canceled by user");
			}
		}

		monitor.subTask("Saving files");
		for (Resource resource : tbs) {
			try {
				resource.save(null);
				if (monitor.isCanceled())
					throw new InterruptedException("Canceled by user");
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}

Re: Splitting to multiple resources [message #704245 is a reply to message #704240]

Thu, 28 July 2011 08:14

Eclipse User

Hi,

can you share a reproduceable grammar and test class?

~Christian

Re: Splitting to multiple resources [message #704886 is a reply to message #704245]

Fri, 29 July 2011 03:07

Eclipse User

Hi,

Thank You, Christian! I created some tests to post and quickly spotted the something. Regardless of running in Eclipse, if I call StandaloneSetup.doSetup() the serialization begins to work.
I had the impression, that the plugin activation does this automatically. Could this be a configuration issue?

B

Re: Splitting to multiple resources [message #704896 is a reply to message #704886]

Fri, 29 July 2011 03:23

Eclipse User

Hi,

you should not call standalonesetup.dosetup from a plugin.

~Christian

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