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[Beginner] Can't get Xtext examples to work [message #1816510] Wed, 30 October 2019 06:42 Go to next message
Eclipse UserFriend
Hi there,

I haven't been working with the Eclipse Platform for a while and I am trying to run the Xtext examples. I cloned the seven-languages and created a run configuration for the builddsl example.
The Eclipse applications starts but I get exceptions like this one when opening the BuildExample.build file :

java.lang.IllegalArgumentException: The type org.xtext.builddsl.lib.DependsOn is not on the classpath.
	at org.eclipse.xtext.xbase.jvmmodel.JvmAnnotationReferenceBuilder.annotationRef(JvmAnnotationReferenceBuilder.java:83)
	at org.eclipse.xtext.xbase.jvmmodel.JvmAnnotationReferenceBuilder.annotationRef(JvmAnnotationReferenceBuilder.java:60)
	at org.xtext.builddsl.jvmmodel.BuildDSLJvmModelInferrer.lambda$4(BuildDSLJvmModelInferrer.java:135)
	at org.eclipse.xtext.xbase.jvmmodel.JvmTypesBuilder.initializeSafely(JvmTypesBuilder.java:211)
	at org.eclipse.xtext.xbase.jvmmodel.JvmTypesBuilder.toMethod(JvmTypesBuilder.java:692)
	at org.xtext.builddsl.jvmmodel.BuildDSLJvmModelInferrer.lambda$3(BuildDSLJvmModelInferrer.java:139)
	at org.eclipse.xtext.xbase.lib.internal.FunctionDelegate.apply(FunctionDelegate.java:42)
	at com.google.common.collect.Iterators$6.transform(Iterators.java:783)
	at com.google.common.collect.TransformedIterator.next(TransformedIterator.java:47)
	at org.eclipse.xtext.xbase.jvmmodel.JvmTypesBuilder.operator_add(JvmTypesBuilder.java:137)
	at org.xtext.builddsl.jvmmodel.BuildDSLJvmModelInferrer.lambda$0(BuildDSLJvmModelInferrer.java:142)
	at org.eclipse.xtext.xbase.jvmmodel.JvmModelAssociator$1.run(JvmModelAssociator.java:397)
	at org.eclipse.xtext.xbase.jvmmodel.JvmModelAssociator.installDerivedState(JvmModelAssociator.java:407)
	at org.eclipse.xtext.resource.DerivedStateAwareResource.installDerivedState(DerivedStateAwareResource.java:243)
	at org.eclipse.xtext.xbase.resource.BatchLinkableResource.getContents(BatchLinkableResource.java:148)
	at org.eclipse.xtext.xbase.typesystem.internal.LogicalContainerAwareBatchTypeResolver.getEntryPoints(LogicalContainerAwareBatchTypeResolver.java:44)
	at org.eclipse.xtext.xbase.typesystem.internal.DefaultBatchTypeResolver.getTypeResolver(DefaultBatchTypeResolver.java:86)
	at org.eclipse.xtext.xbase.typesystem.internal.CachingBatchTypeResolver$1.get(CachingBatchTypeResolver.java:49)
	at org.eclipse.xtext.xbase.typesystem.internal.CachingBatchTypeResolver$1.get(CachingBatchTypeResolver.java:46)
	at org.eclipse.xtext.util.OnChangeEvictingCache.get(OnChangeEvictingCache.java:76)
	at org.eclipse.xtext.xbase.typesystem.internal.CachingBatchTypeResolver.doResolveTypes(CachingBatchTypeResolver.java:46)
	at org.eclipse.xtext.xbase.typesystem.internal.AbstractBatchTypeResolver.resolveTypes(AbstractBatchTypeResolver.java:69)
	at org.eclipse.xtext.xbase.resource.BatchLinkingService.resolveBatched(BatchLinkingService.java:60)
	at org.eclipse.xtext.xbase.resource.BatchLinkingService.resolveBatched(BatchLinkingService.java:41)
	at org.eclipse.xtext.xbase.resource.BatchLinkableResource.getEObject(BatchLinkableResource.java:117)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:223)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:209)
	at org.eclipse.emf.ecore.util.EcoreUtil.resolve(EcoreUtil.java:269)
	at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eResolveProxy(BasicEObjectImpl.java:1477)
	at org.eclipse.xtext.xbase.impl.XAbstractFeatureCallImplCustom.getFeature(XAbstractFeatureCallImplCustom.java:48)
	at org.eclipse.xtext.xbase.impl.XAbstractFeatureCallImplCustom.ensureFeatureLinked(XAbstractFeatureCallImplCustom.java:135)
	at org.eclipse.xtext.xbase.impl.XMemberFeatureCallImplCustom.isTypeLiteral(XMemberFeatureCallImplCustom.java:72)
	at org.eclipse.xtext.xbase.util.FeatureCallAsTypeLiteralHelper.getRootTypeLiteral(FeatureCallAsTypeLiteralHelper.java:122)
	at org.eclipse.xtext.xbase.resource.XbaseLocationInFileProvider.getSignificantTextRegion(XbaseLocationInFileProvider.java:54)
	at org.eclipse.xtext.xbase.jvmmodel.JvmLocationInFileProvider.getSignificantTextRegion(JvmLocationInFileProvider.java:43)
	at org.eclipse.xtext.ui.editor.folding.DefaultFoldingRegionProvider.computeObjectFolding(DefaultFoldingRegionProvider.java:148)
	at org.eclipse.xtext.ui.editor.folding.DefaultFoldingRegionProvider.computeObjectFolding(DefaultFoldingRegionProvider.java:139)
	at org.eclipse.xtext.ui.editor.folding.DefaultFoldingRegionProvider.computeObjectFolding(DefaultFoldingRegionProvider.java:123)
	at org.eclipse.xtext.ui.editor.folding.DefaultFoldingRegionProvider.doGetFoldingRegions(DefaultFoldingRegionProvider.java:97)
	at org.eclipse.xtext.ui.editor.folding.DefaultFoldingRegionProvider$1.exec(DefaultFoldingRegionProvider.java:79)
	at org.eclipse.xtext.ui.editor.folding.DefaultFoldingRegionProvider$1.exec(DefaultFoldingRegionProvider.java:1)
	at org.eclipse.xtext.util.concurrent.CancelableUnitOfWork.exec(CancelableUnitOfWork.java:26)
	at org.eclipse.xtext.util.concurrent.WrappingCancelableUnitOfWork.exec(WrappingCancelableUnitOfWork.java:57)
	at org.eclipse.xtext.util.concurrent.CancelableUnitOfWork.exec(CancelableUnitOfWork.java:26)
	at org.eclipse.xtext.resource.OutdatedStateManager.exec(OutdatedStateManager.java:91)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.internalReadOnly(XtextDocument.java:524)
	at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.readOnly(XtextDocument.java:496)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.readOnly(XtextDocument.java:135)
	at org.eclipse.xtext.util.concurrent.IReadAccess.tryReadOnly(IReadAccess.java:49)
	at org.eclipse.xtext.ui.editor.folding.DefaultFoldingRegionProvider.getFoldingRegions(DefaultFoldingRegionProvider.java:73)
	at org.eclipse.xtext.ui.editor.folding.DefaultFoldingStructureProvider.calculateProjectionAnnotationModel(DefaultFoldingStructureProvider.java:131)
	at org.eclipse.xtext.ui.editor.folding.DefaultFoldingStructureProvider.initialize(DefaultFoldingStructureProvider.java:66)
	at org.eclipse.xtext.ui.editor.folding.DefaultFoldingStructureProvider.handleProjectionEnabled(DefaultFoldingStructureProvider.java:110)
	at org.eclipse.xtext.ui.editor.folding.DefaultFoldingStructureProvider$ProjectionChangeListener.projectionEnabled(DefaultFoldingStructureProvider.java:244)
	at org.eclipse.jface.text.source.projection.ProjectionViewer.fireProjectionEnabled(ProjectionViewer.java:475)
	at org.eclipse.jface.text.source.projection.ProjectionViewer.enableProjection(ProjectionViewer.java:523)
	at org.eclipse.xtext.ui.editor.XtextEditor.installFoldingSupport(XtextEditor.java:568)
	at org.eclipse.xtext.xbase.ui.editor.XbaseEditor.installFoldingSupport(XbaseEditor.java:409)
	at org.eclipse.xtext.ui.editor.XtextEditor.createPartControl(XtextEditor.java:548)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.createPartControl(CompatibilityPart.java:154)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityEditor.createPartControl(CompatibilityEditor.java:96)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.create(CompatibilityPart.java:361)
// trace truncated


Additionally the two imports of the DSL example are marked with an error stating "JavaCompiler/DirectoryCleaner cannot be resolved to a type. I attached the corresponding launch config.

Any ideas to what I am doing wrong here?
Re: [Beginner] Can't get Xtext examples to work [message #1816672 is a reply to message #1816510] Mon, 04 November 2019 11:07 Go to previous message
Eclipse UserFriend
you need to make sure "plugin development" is available in your launch runtime.
otherwise the manifest wont be considered and thus dependencies not found.
is there any reason you are so restrictive there?

[Updated on: Mon, 04 November 2019 11:07] by Moderator

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