Some Eclipse Foundation services are deprecated, or will be soon. Please ensure you've read this important communication.

Bug 364698

Summary:	Code Template Editor: MalformedURLException on code completion
Product:	[Modeling] TMF	Reporter:	Karsten Thoms <karsten.thoms>
Component:	Xtext	Assignee:	Project Inbox <tmf.xtext-inbox>
Status:	CLOSED WORKSFORME	QA Contact:
Severity:	normal
Priority:	P3	CC:	carlo.mueller-reichenwallner
Version:	2.1.1
Target Milestone:	---
Hardware:	PC
OS:	Windows XP
Whiteboard:	v2.10

Description Karsten Thoms

2011-11-24 05:40:53 EST

We are experiencing a problem invoking the content assist in the code templates editor for a language that derives from Xbase.

When entering a template the content assist causes a MalformedURLException  when trying to invoke complete_Literal. The language specific Jvm inferrer is invoked.

I recall having a similar problem in another context. It was important there to get a resource set through the XtextResourceSetProvider. In CodetemplatesProposalProvider#completeLiteral() the resourceset is taken from the template's resource, and I guess this resource set is not properly configured to know the "java" protocol.


82626 [main] WARN  org.eclipse.xtext.ui.editor.contentassist.AbstractJavaBasedContentProposalProvider  - Error in polymorphic dispatcher : org.eclipse.emf.ecore.resource.impl.ResourceSetImpl$1DiagnosticWrappedException: java.net.MalformedURLException: unknown protocol: java
java.lang.RuntimeException: org.eclipse.emf.ecore.resource.impl.ResourceSetImpl$1DiagnosticWrappedException: java.net.MalformedURLException: unknown protocol: java
	at org.eclipse.xtext.ui.codetemplates.ui.projectedEditing.TemporaryResourceProvider.useTemporaryResource(TemporaryResourceProvider.java:39)
	at org.eclipse.xtext.ui.codetemplates.ui.contentassist.CodetemplatesProposalProvider.complete_Literal(CodetemplatesProposalProvider.java:308)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.eclipse.xtext.util.PolymorphicDispatcher.invoke(PolymorphicDispatcher.java:291)
	at org.eclipse.xtext.ui.editor.contentassist.AbstractJavaBasedContentProposalProvider.invokeMethod(AbstractJavaBasedContentProposalProvider.java:271)
	at org.eclipse.xtext.ui.editor.contentassist.AbstractJavaBasedContentProposalProvider.completeRuleCall(AbstractJavaBasedContentProposalProvider.java:176)
	at org.eclipse.xtext.ui.codetemplates.ui.contentassist.AbstractCodetemplatesProposalProvider.completeTemplateBody_Parts(AbstractCodetemplatesProposalProvider.java:45)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.eclipse.xtext.util.PolymorphicDispatcher.invoke(PolymorphicDispatcher.java:291)
	at org.eclipse.xtext.ui.editor.contentassist.AbstractJavaBasedContentProposalProvider.invokeMethod(AbstractJavaBasedContentProposalProvider.java:271)
	at org.eclipse.xtext.ui.editor.contentassist.AbstractJavaBasedContentProposalProvider.completeAssignment(AbstractJavaBasedContentProposalProvider.java:185)
	at org.eclipse.xtext.ui.editor.contentassist.AbstractContentProposalProvider$DefaultContentAssistProcessorSwitch.caseAssignment(AbstractContentProposalProvider.java:66)
	at org.eclipse.xtext.ui.editor.contentassist.AbstractContentProposalProvider$DefaultContentAssistProcessorSwitch.caseAssignment(AbstractContentProposalProvider.java:1)
	at org.eclipse.xtext.util.XtextSwitch.doSwitch(XtextSwitch.java:164)
	at org.eclipse.xtext.util.XtextSwitch.doSwitch(XtextSwitch.java:70)
	at org.eclipse.xtext.util.XtextSwitch.doSwitch(XtextSwitch.java:58)
	at org.eclipse.xtext.ui.editor.contentassist.AbstractContentProposalProvider$DefaultContentAssistProcessorSwitch.accept(AbstractContentProposalProvider.java:71)
	at org.eclipse.xtext.ui.editor.contentassist.AbstractContentProposalProvider.createProposals(AbstractContentProposalProvider.java:108)
	at org.eclipse.xtext.ui.editor.contentassist.AbstractJavaBasedContentProposalProvider.createProposals(AbstractJavaBasedContentProposalProvider.java:246)
	at org.eclipse.xtext.ui.editor.contentassist.CompletionProposalComputer.exec(CompletionProposalComputer.java:51)
	at org.eclipse.xtext.ui.editor.contentassist.CompletionProposalComputer.exec(CompletionProposalComputer.java:1)
	at org.eclipse.xtext.util.concurrent.AbstractReadWriteAcces.readOnly(AbstractReadWriteAcces.java:32)
	at org.eclipse.xtext.ui.editor.model.XtextDocument.readOnly(XtextDocument.java:78)
	at org.eclipse.xtext.ui.editor.contentassist.XtextContentAssistProcessor.computeCompletionProposals(XtextContentAssistProcessor.java:69)
	at org.eclipse.xtext.ui.editor.contentassist.RepeatedContentAssistProcessor.computeCompletionProposals(RepeatedContentAssistProcessor.java:74)
	at org.eclipse.jface.text.contentassist.ContentAssistant.computeCompletionProposals(ContentAssistant.java:1830)
	at org.eclipse.jface.text.contentassist.CompletionProposalPopup.computeProposals(CompletionProposalPopup.java:556)
	at org.eclipse.jface.text.contentassist.CompletionProposalPopup.access$16(CompletionProposalPopup.java:553)
	at org.eclipse.jface.text.contentassist.CompletionProposalPopup$2.run(CompletionProposalPopup.java:488)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
	at org.eclipse.jface.text.contentassist.CompletionProposalPopup.showProposals(CompletionProposalPopup.java:482)
	at org.eclipse.jface.text.contentassist.ContentAssistant.showPossibleCompletions(ContentAssistant.java:1656)
	at org.eclipse.jface.text.source.SourceViewer.doOperation(SourceViewer.java:930)
	at org.eclipse.jface.text.source.projection.ProjectionViewer.doOperation(ProjectionViewer.java:1451)
	at org.eclipse.xtext.ui.codetemplates.ui.preferences.TextViewerAction.run(TextViewerAction.java:65)
	at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
	at org.eclipse.jface.commands.ActionHandler.execute(ActionHandler.java:119)
	at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476)
	at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
	at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169)
	at org.eclipse.ui.internal.keys.WorkbenchKeyboard.executeCommand(WorkbenchKeyboard.java:468)
	at org.eclipse.ui.internal.keys.WorkbenchKeyboard.press(WorkbenchKeyboard.java:786)
	at org.eclipse.ui.internal.keys.WorkbenchKeyboard.processKeyEvent(WorkbenchKeyboard.java:885)
	at org.eclipse.ui.internal.keys.WorkbenchKeyboard.filterKeySequenceBindings(WorkbenchKeyboard.java:567)
	at org.eclipse.ui.internal.keys.WorkbenchKeyboard.access$3(WorkbenchKeyboard.java:508)
	at org.eclipse.ui.internal.keys.WorkbenchKeyboard$KeyDownFilter.handleEvent(WorkbenchKeyboard.java:123)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1262)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1052)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1077)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1062)
	at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1104)
	at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1100)
	at org.eclipse.swt.widgets.Widget.wmChar(Widget.java:1509)
	at org.eclipse.swt.widgets.Control.WM_CHAR(Control.java:4640)
	at org.eclipse.swt.widgets.Canvas.WM_CHAR(Canvas.java:345)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:4528)
	at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:341)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:4972)
	at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
	at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2531)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3752)
	at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
	at org.eclipse.jface.window.Window.open(Window.java:801)
	at org.eclipse.xtext.ui.codetemplates.ui.preferences.AdvancedTemplatesPreferencePage.editTemplate(AdvancedTemplatesPreferencePage.java:56)
	at org.eclipse.ui.texteditor.templates.TemplatePreferencePage.add(TemplatePreferencePage.java:1215)
	at org.eclipse.ui.texteditor.templates.TemplatePreferencePage.access$3(TemplatePreferencePage.java:1209)
	at org.eclipse.ui.texteditor.templates.TemplatePreferencePage$15.handleEvent(TemplatePreferencePage.java:966)
	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:4165)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
	at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
	at org.eclipse.jface.window.Window.open(Window.java:801)
	at org.eclipse.ui.internal.dialogs.WorkbenchPreferenceDialog.open(WorkbenchPreferenceDialog.java:215)
	at org.eclipse.ui.internal.handlers.ShowPreferencePageHandler.execute(ShowPreferencePageHandler.java:54)
	at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:293)
	at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476)
	at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
	at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169)
	at org.eclipse.ui.internal.handlers.SlaveHandlerService.executeCommand(SlaveHandlerService.java:241)
	at org.eclipse.ui.internal.actions.CommandAction.runWithEvent(CommandAction.java:157)
	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:4165)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2696)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2660)
	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494)
	at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
	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:344)
	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:622)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1386)
Caused by: org.eclipse.emf.ecore.resource.impl.ResourceSetImpl$1DiagnosticWrappedException: java.net.MalformedURLException: unknown protocol: java
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.handleDemandLoadException(ResourceSetImpl.java:315)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoadHelper(ResourceSetImpl.java:274)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResource(ResourceSetImpl.java:397)
	at org.eclipse.xtext.resource.SynchronizedXtextResourceSet.getResource(SynchronizedXtextResourceSet.java:23)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getEObject(ResourceSetImpl.java:216)
	at org.eclipse.xtext.common.types.util.TypeReferences.findDeclaredType(TypeReferences.java:182)
	at org.eclipse.xtext.common.types.util.TypeReferences.getTypeForName(TypeReferences.java:146)
	at org.eclipse.xtext.xbase.jvmmodel.JvmTypesBuilder.toClass(JvmTypesBuilder.java:174)
	at org.eclipse.xtext.xbase.jvmmodel.JvmTypesBuilder.toClass(JvmTypesBuilder.java:149)
	at com.commerzbank.core.poc.dialog.jvmmodel.DialogJvmModelInferrer._infer(DialogJvmModelInferrer.java:308)
	at com.commerzbank.core.poc.dialog.jvmmodel.DialogJvmModelInferrer.infer(DialogJvmModelInferrer.java:406)
	at org.eclipse.xtext.xbase.jvmmodel.AbstractModelInferrer._infer(AbstractModelInferrer.java:27)
	at com.commerzbank.core.poc.dialog.jvmmodel.DialogJvmModelInferrer.infer(DialogJvmModelInferrer.java:408)
	at org.eclipse.xtext.xbase.jvmmodel.JvmModelAssociator.installDerivedState(JvmModelAssociator.java:203)
	at org.eclipse.xtext.resource.DerivedStateAwareResource.installDerivedState(DerivedStateAwareResource.java:76)
	at org.eclipse.xtext.resource.DerivedStateAwareResource.getContents(DerivedStateAwareResource.java:41)
	at org.eclipse.xtext.ui.editor.contentassist.antlr.ParserBasedContentAssistContextFactory$StatefulFactory.create(ParserBasedContentAssistContextFactory.java:143)
	at org.eclipse.xtext.ui.editor.contentassist.antlr.ParserBasedContentAssistContextFactory.create(ParserBasedContentAssistContextFactory.java:549)
	at org.eclipse.xtext.ui.codetemplates.ui.contentassist.CodetemplatesProposalProvider$2.process(CodetemplatesProposalProvider.java:318)
	at org.eclipse.xtext.ui.codetemplates.ui.contentassist.CodetemplatesProposalProvider$2.process(CodetemplatesProposalProvider.java:1)
	at org.eclipse.xtext.util.concurrent.IUnitOfWork$Void.exec(IUnitOfWork.java:36)
	at org.eclipse.xtext.ui.codetemplates.ui.projectedEditing.TemporaryResourceProvider.useTemporaryResource(TemporaryResourceProvider.java:37)
	... 115 more
Caused by: java.net.MalformedURLException: unknown protocol: java
	at java.net.URL.<init>(URL.java:574)
	at java.net.URL.<init>(URL.java:464)
	at java.net.URL.<init>(URL.java:413)
	at org.eclipse.emf.ecore.resource.impl.URIHandlerImpl.createInputStream(URIHandlerImpl.java:176)
	at org.eclipse.emf.ecore.resource.impl.ExtensibleURIConverterImpl.createInputStream(ExtensibleURIConverterImpl.java:350)
	at org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:1262)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoad(ResourceSetImpl.java:255)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoadHelper(ResourceSetImpl.java:270)
	... 135 more

Comment 1 Karsten Thoms

2016-03-31 17:34:33 EDT

Can't reproduce the issue anymore. Since it happened with an Xbase derived language I tried it with the Domainmodel language's templates. The template editor works as expected and content assist does not produce an error at all places.

Comment 2 Eclipse Webmaster

2017-10-31 11:05:25 EDT

Requested via bug 522520.

-M.

Comment 3 Eclipse Webmaster

2017-10-31 11:16:45 EDT

Requested via bug 522520.

-M.