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Created attachment 193929 [details] Screenshot: Popup dialog I am facing often a popup error message, which is caused by calling the method NullJdtTypeProvider.createResource(URI). The URI passed in here is java:/Object/java.lang.Object. I cannot really tell how to reproduce it, but it happens for me often just when saving an .xtext file, and also in other situations. Meybe the stacktrace can help a bit. See also screenshots from debugger. Thread [Worker-56] (Suspended (exception UnsupportedOperationException)) NullJdtTypeProvider.createResource(URI) line: 49 SynchronizedXtextResourceSet(ResourceSetImpl).createResource(URI, String) line: 425 SynchronizedXtextResourceSet(ResourceSetImpl).demandCreateResource(URI) line: 239 SynchronizedXtextResourceSet(ResourceSetImpl).getResource(URI, boolean) line: 391 SynchronizedXtextResourceSet.getResource(URI, boolean) line: 23 SynchronizedXtextResourceSet(ResourceSetImpl).getEObject(URI, boolean) line: 216 TypeReferences.findDeclaredType(Class<?>, EObject) line: 180 TypeReferences.getTypeForName(Class<?>, EObject, JvmTypeReference...) line: 143 XtendOverridesService.allSuperOperations(JvmDeclaredType) line: 74 XtendOverridesService.findOverriddenOperation(JvmOperation) line: 61 XtendOverridesService.findOverriddenOperation(XtendFunction) line: 55 XtendOverridesService.getOverriddenReturnType(XtendFunction) line: 85 Xtend2TypeProvider.getDeclaredOrOverriddenReturnType(XtendFunction) line: 231 Xtend2TypeProvider._typeForIdentifiable(XtendFunction, boolean) line: 163 GeneratedMethodAccessor35.invoke(Object, Object[]) line: not available DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25 Method.invoke(Object, Object...) line: 597 PolymorphicDispatcher<RT>.invoke(Object...) line: 291 AbstractTypeProvider$4.doComputation(JvmIdentifiableElement, boolean) line: 270 AbstractTypeProvider$4.doComputation(EObject, boolean) line: 1 AbstractTypeProvider$CyclicHandlingSupport$3.get() line: 432 AbstractTypeProvider$CyclicHandlingSupport$3.get() line: 1 AbstractTypeProvider$1.get(Object, Resource, Provider<T>) line: 107 AbstractTypeProvider$4(AbstractTypeProvider$CyclicHandlingSupport<T>).getType(T, boolean) line: 429 Xtend2TypeProvider(AbstractTypeProvider).doGetType(String, T, boolean, CyclicHandlingSupport<T>) line: 190 Xtend2TypeProvider(AbstractTypeProvider).getTypeForIdentifiable(JvmIdentifiableElement, boolean) line: 284 Xtend2TypeProvider(AbstractTypeProvider).getTypeForIdentifiable(JvmIdentifiableElement) line: 280 Xtend2Resource.inferReturnType(JvmOperation) line: 117 Xtend2Resource.getEObject(String) line: 82 SynchronizedXtextResourceSet(ResourceSetImpl).getEObject(URI, boolean) line: 219 EcoreUtil.resolve(EObject, ResourceSet) line: 202 EcoreUtil.resolve(EObject, EObject) line: 262 JvmOperationImpl(BasicEObjectImpl).eResolveProxy(InternalEObject) line: 1483 JvmOperationImpl.getReturnType() line: 208 JvmOperationImpl.eGet(int, boolean, boolean) line: 306 JvmOperationImpl(BasicEObjectImpl).eGet(EStructuralFeature, boolean, boolean) line: 1021 JvmOperationImpl(BasicEObjectImpl).eGet(EStructuralFeature, boolean) line: 1013 EContentsEList$ResolvingFeatureIteratorImpl<E>(EContentsEList$FeatureIteratorImpl<E>).hasNext() line: 409 EContentsEList$ResolvingFeatureIteratorImpl<E>(EContentsEList$FeatureIteratorImpl<E>).next() line: 565 EcoreUtil$2(AbstractTreeIterator<E>).next() line: 139 Xtend2Resource(LazyLinkingResource).resolveLazyCrossReferences(CancelIndicator) line: 95 EcoreUtil2.resolveLazyCrossReferences(Resource, CancelIndicator) line: 417 DefaultResourceDescription.getImportedNames() line: 95 DefaultResourceDescriptionManager.getImportedNames(IResourceDescription) line: 95 DefaultResourceDescriptionManager.isAffected(IResourceDescription$Delta, IResourceDescription) line: 91 DirtyStateEditorSupport.isReparseRequired(XtextResource, IResourceDescription$Event) line: 365 DirtyStateEditorSupport$UpdateEditorStateJob$1.exec(XtextResource) line: 123 DirtyStateEditorSupport$UpdateEditorStateJob$1.exec(Object) line: 1 XtextDocument$XtextDocumentLocker(AbstractReadWriteAcces<P>).readOnly(IUnitOfWork<T,P>) line: 32 XtextDocument.readOnly(IUnitOfWork<T,XtextResource>) line: 86 DirtyStateEditorSupport$UpdateEditorStateJob.run(IProgressMonitor) line: 116 Worker.run() line: 54
Created attachment 193930 [details] Screenshot: Debugger #1
Created attachment 193931 [details] Screenshot: Debugger #2
Karsten, which Xtext version do you use? Could you please provide the build id?
2.0.0.v201104211304 Maybe worth to mention: I had the same project in the workspace checked out as subfolder. Means that I have checked out the root of a branch where my projects (the domainmodel example) where within subfolders. And the projects existed also as top-level projects. Maybe this causes the situation?
If not IJavaProject can be found for a given IResource, a NullJdtTypeProvider is configured for the project. It should not throw an UnsupportedOperationException. We should try to find a way to handle this situation gracefully.
I'll try to create an empty resource with the given URI. That should do the trick.
Pushed to master. Please verify.
Closing all bugs that were set to RESOLVED before Neon.0
