| Could not serialize Mission via backtracking [message #1796385] |
Fri, 12 October 2018 04:05  |
Eclipse User |
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Hello!
So I'm having problems with my project (again). I'm working with both Xtext and Sirius, so I don't really know where the problem lies. The thing is that when working with both syntaxes at the same time there are certain objects that return an error (see below) when being added from Sirius. It doesn't happen when adding those objects from Xtext, they just pop up in the graphical syntax as usual. Those objects are the ones inheriting from abstract classes (my workspace: https://www.dropbox.com/s/hgamlrayc4ymjlz/workspace.zip?dl=0). However, only one of the objects gives an error when specified in Sirius. In my grammar it would be the object Event, but not Action (also "ordered locations" but not "not ordered locations"). I realized that the order in the grammar is important since if I exchange (for instance) the position of events and actions the object returning error also changes. I hope I could explain it properly. Thank you in advance.
Best regards,
Sergio
PS: I first published this issue in the Sirius forum, but they referred me to this forum (https://www.eclipse.org/forums/index.php/m/1795167/#msg_1795167)
!ENTRY org.eclipse.core.jobs 4 2 2018-09-17 17:17:32.464
!MESSAGE An internal error occurred during: "Saving Models and Representations for project promise_integration".
!STACK 0
java.lang.RuntimeException: Could not serialize Mission via backtracking.
Constraint: Mission_Mission returns Mission: (
(conditions+=Event conditions+=Event*)?
(conditions+=Action conditions+=Action*)?
robots+=Robot
robots+=Robot*
(location+=OrderedLocation location+=OrderedLocation*)?
(location+=NotOrderedLocation location+=NotOrderedLocation*)?
operator+=Operator
operator+=Operator*
);
Values: operator(1), conditions(24), robots(3), location(6)
Semantic Object: Mission
URI: platform:/resource/promise_integration/mission2.promise
Context: Mission returns Mission
at org.eclipse.xtext.serializer.diagnostic.ISerializationDiagnostic$ExceptionThrowingAcceptor.accept(ISerializationDiagnostic.java:131)
at org.eclipse.xtext.serializer.sequencer.BacktrackingSemanticSequencer.createSequence(BacktrackingSemanticSequencer.java:503)
at se.gu.co4robots.xtext.promise.serializer.PromiseSemanticSequencer.sequence_Mission(PromiseSemanticSequencer.java:395)
at se.gu.co4robots.xtext.promise.serializer.PromiseSemanticSequencer.sequence(PromiseSemanticSequencer.java:108)
at org.eclipse.xtext.serializer.sequencer.AbstractSemanticSequencer.createSequence(AbstractSemanticSequencer.java:67)
at org.eclipse.xtext.serializer.impl.Serializer.serialize(Serializer.java:115)
at org.eclipse.xtext.serializer.impl.Serializer.serializeToRegions(Serializer.java:136)
at org.eclipse.xtext.serializer.impl.Serializer.serialize(Serializer.java:142)
at org.eclipse.xtext.serializer.impl.Serializer.serialize(Serializer.java:189)
at org.eclipse.xtext.resource.XtextResource.doSave(XtextResource.java:386)
at org.eclipse.emf.ecore.resource.impl.ResourceImpl.save(ResourceImpl.java:1430)
at org.eclipse.sirius.business.internal.session.danalysis.ResourceSaveDiagnose.hasDifferentSerialization(ResourceSaveDiagnose.java:84)
at org.eclipse.sirius.business.internal.session.IsModifiedSavingPolicy.hasDifferentSerialization(IsModifiedSavingPolicy.java:210)
at org.eclipse.sirius.business.internal.session.IsModifiedSavingPolicy.computeResourcesToSave(IsModifiedSavingPolicy.java:191)
at org.eclipse.sirius.business.api.session.AbstractSavingPolicy.save(AbstractSavingPolicy.java:57)
at org.eclipse.sirius.common.xtext.internal.XtextSavingPolicy.save(XtextSavingPolicy.java:68)
at org.eclipse.sirius.business.internal.session.danalysis.DAnalysisSessionImpl$1.run(DAnalysisSessionImpl.java:828)
at org.eclipse.emf.transaction.impl.TransactionalEditingDomainImpl.runExclusive(TransactionalEditingDomainImpl.java:328)
at org.eclipse.sirius.business.internal.session.danalysis.DAnalysisSessionImpl.doSave(DAnalysisSessionImpl.java:837)
at org.eclipse.sirius.business.internal.session.danalysis.Saver.wrappedSave(Saver.java:142)
at org.eclipse.sirius.business.internal.session.danalysis.Saver.access$0(Saver.java:131)
at org.eclipse.sirius.business.internal.session.danalysis.Saver$1.run(Saver.java:119)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2240)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2262)
at org.eclipse.sirius.business.internal.session.danalysis.Saver.saveNow(Saver.java:116)
at org.eclipse.sirius.business.internal.session.danalysis.Saver.save(Saver.java:93)
at org.eclipse.sirius.business.internal.session.danalysis.DAnalysisSessionImpl.save(DAnalysisSessionImpl.java:801)
at org.eclipse.sirius.business.internal.session.danalysis.DAnalysisSessionImpl.save(DAnalysisSessionImpl.java:796)
at org.eclipse.sirius.diagram.ui.tools.internal.resource.CustomSiriusDocumentProvider.doSaveDocument(CustomSiriusDocumentProvider.java:279)
at org.eclipse.gmf.runtime.diagram.ui.resources.editor.document.AbstractDocumentProvider$1SaveOperation.execute(AbstractDocumentProvider.java:596)
at org.eclipse.gmf.runtime.diagram.ui.resources.editor.document.AbstractDocumentProvider$DocumentProviderOperation.run(AbstractDocumentProvider.java:66)
at org.eclipse.gmf.runtime.diagram.ui.resources.editor.document.AbstractDocumentProvider.executeOperation(AbstractDocumentProvider.java:530)
at org.eclipse.gmf.runtime.diagram.ui.resources.editor.document.AbstractDocumentProvider.saveDocument(AbstractDocumentProvider.java:579)
at org.eclipse.gmf.runtime.diagram.ui.resources.editor.parts.DiagramDocumentEditor.performSave(DiagramDocumentEditor.java:864)
at org.eclipse.gmf.runtime.diagram.ui.resources.editor.parts.DiagramDocumentEditor.doSave(DiagramDocumentEditor.java:684)
at org.eclipse.sirius.ui.business.internal.session.SaveSessionRunnable.run(SaveSessionRunnable.java:62)
at org.eclipse.ui.internal.SaveableHelper$2.run(SaveableHelper.java:370)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)
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| Re: Could not serialize Mission via backtracking [message #1796840 is a reply to message #1796700] |
Fri, 19 October 2018 12:12  |
| Eclipse User |
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Hi again,
I've debugged the application and I checked how the ast was built. And, yes, in the ast the locations and conditions where interleaved, which triggered the error. I changed my metamodel and everything works fine now. Thank you both for your help!
Best regards,
Sergio
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