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Bug 340125

Summary:	[Query2] Error while Deserializing
Product:	[Modeling] EMF	Reporter:	saurav sarkar <saurav.sarkar1>
Component:	Query2	Assignee:	Project Inbox <emf.query2-inbox>
Status:	NEW ---	QA Contact:
Severity:	normal
Priority:	P3	CC:	ahunter.eclipse, animesh143
Version:	unspecified
Target Milestone:	---
Hardware:	PC
OS:	Windows 7
Whiteboard:

Description saurav sarkar

2011-03-16 05:15:07 EDT

Error appears while a resource is deserilazed and appears in the FURCAS workspace.

Please check the stacktrace below

[code]


java.lang.RuntimeException: invoking method main() on parser class class com.sap.furcas.parser.tcs.stable.TCSParser caused an exception.
	at com.sap.furcas.runtime.parser.wrapper.GeneratedParserWrapper.parse(GeneratedParserWrapper.java:233)
	at com.sap.furcas.runtime.parser.ParserFacade.parseProductionRule(ParserFacade.java:117)
	at com.sap.furcas.runtime.parser.ParserFacade.parseProductionRule(ParserFacade.java:63)
	at com.sap.furcas.parsergenerator.emf.tcs.inject.TCSSpecificEMFModelInjector.parseSyntaxDefinition(TCSSpecificEMFModelInjector.java:57)
	at com.sap.furcas.parsergenerator.emf.tcs.inject.TCSSpecificEMFModelInjector.parseSyntaxDefinition(TCSSpecificEMFModelInjector.java:43)
	at com.sap.furcas.parsergenerator.tcs.generator.SyntaxParser.parse(SyntaxParser.java:39)
	at com.sap.furcas.parsergenerator.tcs.generator.TCSParserGeneratorImpl.parseSyntax(TCSParserGeneratorImpl.java:64)
	at com.sap.furcas.ide.dslproject.builder.SyntaxBuilder.buildGrammar(SyntaxBuilder.java:217)
	at com.sap.furcas.ide.dslproject.builder.SyntaxBuilder$TCSBuildVisitor.visit(SyntaxBuilder.java:64)
	at org.eclipse.core.internal.resources.Resource$2.visit(Resource.java:112)
	at org.eclipse.core.internal.resources.Resource$1.visitElement(Resource.java:64)
	at org.eclipse.core.internal.watson.ElementTreeIterator.doIteration(ElementTreeIterator.java:82)
	at org.eclipse.core.internal.watson.ElementTreeIterator.doIteration(ElementTreeIterator.java:86)
	at org.eclipse.core.internal.watson.ElementTreeIterator.doIteration(ElementTreeIterator.java:86)
	at org.eclipse.core.internal.watson.ElementTreeIterator.doIteration(ElementTreeIterator.java:86)
	at org.eclipse.core.internal.watson.ElementTreeIterator.iterate(ElementTreeIterator.java:127)
	at org.eclipse.core.internal.resources.Resource.accept(Resource.java:74)
	at org.eclipse.core.internal.resources.Resource.accept(Resource.java:110)
	at org.eclipse.core.internal.resources.Resource.accept(Resource.java:94)
	at com.sap.furcas.ide.dslproject.builder.SyntaxBuilder.build(SyntaxBuilder.java:134)
	at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:629)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:172)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:203)
	at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:255)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:258)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:220)
	at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:362)
	at org.eclipse.core.internal.resources.Project$1.run(Project.java:545)
	at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1975)
	at org.eclipse.core.internal.resources.Project.internalBuild(Project.java:524)
	at org.eclipse.core.internal.resources.Project.build(Project.java:115)
	at com.sap.furcas.ide.projectwizard.wizards.FurcasWizard.generateSpecific(FurcasWizard.java:342)
	at com.sap.furcas.ide.projectwizard.wizards.FurcasWizard.structuredProcess(FurcasWizard.java:410)
	at com.sap.furcas.ide.projectwizard.wizards.FurcasWizard$2.runInUIThread(FurcasWizard.java:183)
	at org.eclipse.ui.progress.UIJob$1.run(UIJob.java:95)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:134)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4041)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3660)
	at org.eclipse.jface.operation.ModalContext$ModalContextThread.block(ModalContext.java:173)
	at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:388)
	at org.eclipse.jface.wizard.WizardDialog.run(WizardDialog.java:1008)
	at com.sap.furcas.ide.projectwizard.wizards.FurcasWizard.performFinish(FurcasWizard.java:152)
	at org.eclipse.jface.wizard.WizardDialog.finishPressed(WizardDialog.java:811)
	at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:430)
	at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:624)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:234)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4066)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657)
	at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
	at org.eclipse.jface.window.Window.open(Window.java:801)
	at org.eclipse.ui.actions.NewProjectAction.run(NewProjectAction.java:117)
	at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
	at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
	at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
	at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4066)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2640)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2604)
	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2438)
	at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:671)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:664)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:620)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:575)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1408)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1384)
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at com.sap.furcas.runtime.parser.wrapper.GeneratedParserWrapper.parse(GeneratedParserWrapper.java:220)
	... 84 more
Caused by: java.lang.RuntimeException: Failed to query element with name [ecore, EClassifier]
	at com.sap.furcas.modeladaptation.emf.adaptation.EMFModelAdapter.queryElement(EMFModelAdapter.java:254)
	at com.sap.furcas.parsergenerator.emf.tcs.inject.TCSSpecificEMFModelAdapter.queryElement(TCSSpecificEMFModelAdapter.java:200)
	at com.sap.furcas.runtime.parser.impl.DefaultTextAwareModelAdapter.createOrResolveElement(DefaultTextAwareModelAdapter.java:60)
	at com.sap.furcas.runtime.parser.impl.ModelInjector.createOrResolve(ModelInjector.java:75)
	at com.sap.furcas.runtime.parser.impl.ObservableInjectingParser.createOrResolve(ObservableInjectingParser.java:292)
	at com.sap.furcas.runtime.parser.impl.ObservableInjectingParser.commitCreation(ObservableInjectingParser.java:409)
	at com.sap.furcas.parser.tcs.stable.TCSParser.ecore_eclassifier(TCSParser.java:3261)
	at com.sap.furcas.parser.tcs.stable.TCSParser.reference(TCSParser.java:4993)
	at com.sap.furcas.parser.tcs.stable.TCSParser.furcas_tcs_classtemplate(TCSParser.java:6293)
	at com.sap.furcas.parser.tcs.stable.TCSParser.furcas_tcs_contexttemplate(TCSParser.java:5297)
	at com.sap.furcas.parser.tcs.stable.TCSParser.furcas_tcs_template(TCSParser.java:5195)
	at com.sap.furcas.parser.tcs.stable.TCSParser.furcas_tcs_concretesyntax(TCSParser.java:4279)
	at com.sap.furcas.parser.tcs.stable.TCSParser.main(TCSParser.java:4058)
	... 89 more
Caused by: java.lang.NullPointerException: while trying to invoke the method org.eclipse.emf.query.index.internal.impl.PageableResourceDescriptorImpl.getURI() of an object returned from org.eclipse.emf.query.index.internal.maps.SingleMap.getEqual(java.lang.Object)
	at org.eclipse.emf.query.index.internal.impl.SerializationStrategyFactory$OutgoingLinkMapStrategy.readElement(SerializationStrategyFactory.java:602)
	at org.eclipse.emf.query.index.internal.impl.SerializationStrategyFactory$OutgoingLinkMapStrategy.readElement(SerializationStrategyFactory.java:1)
	at org.eclipse.emf.query.index.internal.maps.ListMap.deserialize(ListMap.java:414)
	at org.eclipse.emf.query.index.internal.impl.PageableResourceDescriptorImpl.deserialize(PageableResourceDescriptorImpl.java:252)
	at org.eclipse.emf.query.index.internal.impl.PageableResourceDescriptorImpl.pageIn(PageableResourceDescriptorImpl.java:287)
	at org.eclipse.emf.query.index.internal.impl.PagingStrategyImpl.loadElement(PagingStrategyImpl.java:270)
	at org.eclipse.emf.query.index.internal.impl.PagingStrategyImpl.lock(PagingStrategyImpl.java:313)
	at org.eclipse.emf.query.index.internal.impl.PagingResourceDescriptorMap.acquire(PagingResourceDescriptorMap.java:68)
	at org.eclipse.emf.query.index.internal.impl.query.EObjectQueryImpl$1.getNextIterator(EObjectQueryImpl.java:107)
	at org.eclipse.emf.query.index.internal.util.FilteredIterableMulti$2.hasNext(FilteredIterableMulti.java:55)
	at org.eclipse.emf.query.index.internal.impl.query.QueryResultImpl$1.hasNext(QueryResultImpl.java:40)
	at org.eclipse.emf.query2.IndexQueryService$5.execute(IndexQueryService.java:250)
	at org.eclipse.emf.query.index.internal.impl.PageableIndexImpl.executeQueryCommand(PageableIndexImpl.java:95)
	at org.eclipse.emf.query2.IndexQueryService.getResourcesOfInstances(IndexQueryService.java:246)
	at org.eclipse.emf.query2.internal.bql.engine.BasicQueryProcessorMemoryEstimationImpl.adaptScopeForInstancesOfTypesInMee(BasicQueryProcessorMemoryEstimationImpl.java:377)
	at org.eclipse.emf.query2.internal.bql.engine.BasicQueryProcessorMemoryEstimationImpl.adaptScopeForInstancesOfTypes(BasicQueryProcessorMemoryEstimationImpl.java:345)
	at org.eclipse.emf.query2.internal.bql.engine.BasicQueryProcessorMemoryEstimationImpl.estimate(BasicQueryProcessorMemoryEstimationImpl.java:296)
	at org.eclipse.emf.query2.internal.bql.engine.BasicQueryProcessorMemoryEstimationImpl.execute(BasicQueryProcessorMemoryEstimationImpl.java:100)
	at org.eclipse.emf.query2.internal.moinql.engine.InterpreterImpl.executeLeafQuery(InterpreterImpl.java:399)
	at org.eclipse.emf.query2.internal.moinql.engine.InterpreterImpl.executeInternalQuery(InterpreterImpl.java:259)
	at org.eclipse.emf.query2.internal.moinql.engine.InterpreterImpl.executeResultUnion(InterpreterImpl.java:288)
	at org.eclipse.emf.query2.internal.moinql.engine.InterpreterImpl.executeInternalQuery(InterpreterImpl.java:246)
	at org.eclipse.emf.query2.internal.moinql.engine.InterpreterImpl.execute(InterpreterImpl.java:136)
	at org.eclipse.emf.query2.internal.moinql.controller.QueryProcessorImpl.executeSecuredInternal(QueryProcessorImpl.java:520)
	at org.eclipse.emf.query2.internal.moinql.controller.QueryProcessorImpl.access$0(QueryProcessorImpl.java:479)
	at org.eclipse.emf.query2.internal.moinql.controller.QueryProcessorImpl$1.execute(QueryProcessorImpl.java:466)
	at org.eclipse.emf.query.index.internal.impl.PageableIndexImpl.executeQueryCommand(PageableIndexImpl.java:95)
	at org.eclipse.emf.query2.internal.moinql.controller.QueryProcessorImpl.executeInternal(QueryProcessorImpl.java:471)
	at org.eclipse.emf.query2.internal.moinql.controller.QueryProcessorImpl.execute(QueryProcessorImpl.java:682)
	at org.eclipse.emf.query2.internal.moinql.controller.QueryProcessorImpl.execute(QueryProcessorImpl.java:633)
	at com.sap.furcas.modeladaptation.emf.lookup.QueryBasedEcoreMetaModelLookUp.executeQuery(QueryBasedEcoreMetaModelLookUp.java:170)
	at com.sap.furcas.modeladaptation.emf.lookup.QueryBasedEcoreMetaModelLookUp.findClassifiersByUnqualifiedName(QueryBasedEcoreMetaModelLookUp.java:111)
	at com.sap.furcas.modeladaptation.emf.lookup.QueryBasedEcoreMetaModelLookUp.findClassifiersByQualifiedName(QueryBasedEcoreMetaModelLookUp.java:86)
	at com.sap.furcas.modeladaptation.emf.lookup.AbstractEcoreMetaModelLookup.resolveReference(AbstractEcoreMetaModelLookup.java:281)
	at com.sap.furcas.modeladaptation.emf.adaptation.EcoreModelElementFinder.findMetaClassOfType(EcoreModelElementFinder.java:217)
	at com.sap.furcas.modeladaptation.emf.adaptation.EcoreModelElementFinder.findEObjectsOfTypeWithProperties(EcoreModelElementFinder.java:145)
	at com.sap.furcas.modeladaptation.emf.adaptation.EMFModelAdapterDelegate.queryElement(EMFModelAdapterDelegate.java:406)
	at com.sap.furcas.modeladaptation.emf.adaptation.EMFModelAdapter.queryElement(EMFModelAdapter.java:252)
	... 101 more

[/code]

Comment 1 Animesh Kumar

2011-04-25 06:50:12 EDT

Cause of this Exception is As Follows:-
When trying to load (the dumped indices), for some Resource Descriptor, it tries to load the Reference Tables (Outgoing Links table in this case) and it is unable to retrieve the target resource for a particular reference URI. Due to which its throwing a null pointer exception. 
This maybe because you are trying to retrieve some resource inside a jar or some other location which is not resolvable using the given uri and hence it is throwing the exception.

One Possible way to overcome this problem is that, a check for null can be done in the Query 2 code and then try to retrieve the URIs, but its not recommended, as it will ignore all Incorrect Data or access to some restricted data.
Whereas the existing code does not allow you to pass incorrect data.