Play 2.6 Maven integration - Do I need to keep sbt files around?

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Nir

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Nov 9, 2017, 3:33:46 PM11/9/17

to Play Framework

I am trying to create play 2.6 project with maven. I followed instruction from following link to do that:

https://play2-maven-plugin.github.io/play2-maven-plugin/1.0.0-rc1/usage-play26.html

Now my scala-ide can not do Organize Imports or GoToDefinition. It keeps reporting errors in Error Log which says "scala.reflect.internal.MissingRequirementError: object scala in compiler mirror not found." Error is coming from Plug-in: org.scala-ide.sdt.core

I am using scala 2.11 . Not sure what I am missing here. Do I need to keep sbt files around ?

Grzegorz Slowikowski

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Nov 9, 2017, 5:25:33 PM11/9/17

to play-framework

You don't need SBT files.

What is your play version? I have unresolved problems with versions 2.6.2+. If you use one of them, can you downgrade to 2.6.1 and try again?

Regards

Grzegorz Slowikowski

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Nir

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Nov 16, 2017, 8:29:08 AM11/16/17

to Play Framework

I was able to resolve most of the Eclipse Compilation Problems except weird errors on not recognizing implicit imports and package objects. After bunch of Maven project update if things still doesn't improve I tried to restart eclipse but eclipse crashes from that point with huge stacktrace in .metadata/.log file.

I put some more detail on this stackoverflow: https://stackoverflow.com/questions/47294479/eclipse-oxygen-and-scala-ide-4-7-crashes-with-play-framework-project-in-workspac

Here's some part of eclipse error log

!ENTRY org.eclipse.equinox.event 4 0 2017-11-15 11:08:40.523

!MESSAGE Exception while dispatching event org.osgi.service.event.Event [topic=org/eclipse/e4/ui/model/ui/UIElement/widget/SET] {ChangedElement=org.eclipse.e4.ui.model.application.ui.basic.impl.PartStackImpl@57ab5033 (elementId: PartStack@717dabe, tags: [], contributorURI: null) (widget: null, renderer: org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer@4cd30e34, toBeRendered: true, onTop: false, visible: true, containerData: 5000, accessibilityPhrase: null), Widget=null, org.eclipse.e4.data={ChangedElement=org.eclipse.e4.ui.model.application.ui.basic.impl.PartStackImpl@57ab5033 (elementId: PartStack@717dabe, tags: [], contributorURI: null) (widget: null, renderer: org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer@4cd30e34, toBeRendered: true, onTop: false, visible: true, containerData: 5000, accessibilityPhrase: null), AttName=widget, EventType=SET, OldValue=CTabFolder {}, Widget=null}, AttName=widget, EventType=SET, OldValue=CTabFolder {}} to handler org.eclipse.e4.ui.services.internal.events.UIEventHandler@75ba4409

!STACK 0

java.lang.NullPointerException

at org.eclipse.e4.ui.workbench.renderers.swt.AreaRenderer.ensureCTF(AreaRenderer.java:125)

at org.eclipse.e4.ui.workbench.renderers.swt.AreaRenderer.synchCTFState(AreaRenderer.java:220)

at org.eclipse.e4.ui.workbench.renderers.swt.AreaRenderer.access$0(AreaRenderer.java:209)

at org.eclipse.e4.ui.workbench.renderers.swt.AreaRenderer$1.handleEvent(AreaRenderer.java:81)

at org.eclipse.e4.ui.services.internal.events.UIEventHandler$1.run(UIEventHandler.java:40)

at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:233)

at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:144)

at org.eclipse.swt.widgets.Display.syncExec(Display.java:4870)

at org.eclipse.e4.ui.internal.workbench.swt.E4Application$1.syncExec(E4Application.java:212)

at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:36)

at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:201)

at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:197)

at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)

at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)

at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)

at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:135)

at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:78)

at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:39)

at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:52)

at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:60)

at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:374)

at org.eclipse.e4.ui.model.application.ui.impl.UIElementImpl.setWidget(UIElementImpl.java:261)

at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.unbindWidget(SWTPartRenderer.java:147)

at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.lambda$0(SWTPartRenderer.java:136)

at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer$$Lambda$147/1477519989.widgetDisposed(Unknown Source)

at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:124)

at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:86)

at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4257)

at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1502)

at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1525)

at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1510)

at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1314)

at org.eclipse.swt.custom.CTabFolder.onDispose(CTabFolder.java:1646)

at org.eclipse.swt.custom.CTabFolder.lambda$0(CTabFolder.java:321)

at org.eclipse.swt.custom.CTabFolder$$Lambda$154/1293215308.handleEvent(Unknown Source)

at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:86)

at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4257)

at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1502)

at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1525)

at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1506)

at org.eclipse.swt.widgets.Widget.release(Widget.java:1343)

at org.eclipse.swt.widgets.Control.release(Control.java:2957)

at org.eclipse.swt.widgets.Composite.releaseChildren(Composite.java:955)

at org.eclipse.swt.widgets.Widget.release(Widget.java:1346)

at org.eclipse.swt.widgets.Control.release(Control.java:2957)

at org.eclipse.swt.widgets.Composite.releaseChildren(Composite.java:955)

at org.eclipse.swt.widgets.Widget.release(Widget.java:1346)

at org.eclipse.swt.widgets.Control.release(Control.java:2957)

at org.eclipse.swt.widgets.Composite.releaseChildren(Composite.java:955)

at org.eclipse.swt.widgets.Widget.release(Widget.java:1346)

at org.eclipse.swt.widgets.Control.release(Control.java:2957)

at org.eclipse.swt.widgets.Composite.releaseChildren(Composite.java:955)

at org.eclipse.swt.widgets.Widget.release(Widget.java:1346)

at org.eclipse.swt.widgets.Control.release(Control.java:2957)

at org.eclipse.swt.widgets.Composite.releaseChildren(Composite.java:955)

at org.eclipse.swt.widgets.Widget.release(Widget.java:1346)

at org.eclipse.swt.widgets.Control.release(Control.java:2957)

at org.eclipse.swt.widgets.Composite.releaseChildren(Composite.java:955)

at org.eclipse.swt.widgets.Widget.release(Widget.java:1346)

at org.eclipse.swt.widgets.Control.release(Control.java:2957)

at org.eclipse.swt.widgets.Composite.releaseChildren(Composite.java:955)

at org.eclipse.swt.widgets.Widget.release(Widget.java:1346)

at org.eclipse.swt.widgets.Control.release(Control.java:2957)

at org.eclipse.swt.widgets.Composite.releaseChildren(Composite.java:955)

at org.eclipse.swt.widgets.Widget.release(Widget.java:1346)

at org.eclipse.swt.widgets.Control.release(Control.java:2957)

at org.eclipse.swt.widgets.Composite.releaseChildren(Composite.java:955)

at org.eclipse.swt.widgets.Widget.release(Widget.java:1346)

at org.eclipse.swt.widgets.Control.release(Control.java:2957)

at org.eclipse.swt.widgets.Composite.releaseChildren(Composite.java:955)

at org.eclipse.swt.widgets.Canvas.releaseChildren(Canvas.java:348)

at org.eclipse.swt.widgets.Decorations.releaseChildren(Decorations.java:403)

at org.eclipse.swt.widgets.Shell.releaseChildren(Shell.java:1426)

at org.eclipse.swt.widgets.Widget.release(Widget.java:1346)

at org.eclipse.swt.widgets.Control.release(Control.java:2957)

at org.eclipse.swt.widgets.Widget.dispose(Widget.java:687)

at org.eclipse.swt.widgets.Display.release(Display.java:3756)

at org.eclipse.swt.graphics.Device.dispose(Device.java:189)

at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:167)

at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)

at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)

at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)

at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)

at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:483)

at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653)

at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590)

at org.eclipse.equinox.launcher.Main.run(Main.java:1499)

!ENTRY org.eclipse.osgi 4 0 2017-11-15 11:08:40.758

!MESSAGE Application error

!STACK 1

java.lang.AssertionError: assertion failed

at scala.Predef$.assert(Predef.scala:204)

at scala.tools.scalap.Classfile.<init>(Classfile.scala:17)

at org.scalaide.core.internal.jdt.model.ScalaClassFileDescriber$.isScala(ScalaClassFileDescriber.scala:16)

at org.scalaide.core.internal.jdt.model.ScalaClassFileDescriber.describe(ScalaClassFileDescriber.scala:38)

at org.eclipse.core.internal.content.ContentTypeCatalog.describe(ContentTypeCatalog.java:226)

at org.eclipse.core.internal.content.ContentTypeCatalog.collectMatchingByContents(ContentTypeCatalog.java:197)

at org.eclipse.core.internal.content.ContentTypeCatalog.internalFindContentTypesFor(ContentTypeCatalog.java:409)

at org.eclipse.core.internal.content.ContentTypeCatalog.internalFindContentTypesFor(ContentTypeCatalog.java:458)

at org.eclipse.core.internal.content.ContentTypeCatalog.findContentTypesFor(ContentTypeCatalog.java:306)

at org.eclipse.core.internal.content.ContentTypeMatcher.findContentTypeFor(ContentTypeMatcher.java:36)

at org.eclipse.wst.sse.core.internal.modelhandler.ModelHandlerRegistry.getHandlerFor(ModelHandlerRegistry.java:230)

at org.eclipse.wst.sse.core.internal.model.ModelManagerImpl.calculateType(ModelManagerImpl.java:750)

at org.eclipse.wst.sse.core.internal.model.ModelManagerImpl.getModelForEdit(ModelManagerImpl.java:1427)

at org.eclipse.wst.sse.ui.internal.StorageModelProvider.loadModel(StorageModelProvider.java:733)

at org.eclipse.wst.sse.ui.internal.StorageModelProvider.loadModel(StorageModelProvider.java:705)

at org.eclipse.wst.sse.ui.internal.StorageModelProvider.selfCreateModel(StorageModelProvider.java:761)

at org.eclipse.wst.sse.ui.internal.StorageModelProvider.createModelInfo(StorageModelProvider.java:478)

at org.eclipse.wst.sse.ui.internal.StorageModelProvider.createElementInfo(StorageModelProvider.java:469)

at org.eclipse.ui.texteditor.AbstractDocumentProvider.connect(AbstractDocumentProvider.java:392)

at org.eclipse.ui.texteditor.AbstractTextEditor.doSetInput(AbstractTextEditor.java:4178)

at org.eclipse.ui.texteditor.StatusTextEditor.doSetInput(StatusTextEditor.java:257)

at org.eclipse.ui.texteditor.AbstractDecoratedTextEditor.doSetInput(AbstractDecoratedTextEditor.java:1466)

at org.eclipse.ui.editors.text.TextEditor.doSetInput(TextEditor.java:150)

at org.eclipse.wst.sse.ui.StructuredTextEditor.doSetInput(StructuredTextEditor.java:1958)

at org.eclipse.ui.texteditor.AbstractTextEditor$5.run(AbstractTextEditor.java:3154)

at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow.java:2137)

at org.eclipse.ui.texteditor.AbstractTextEditor.internalInit(AbstractTextEditor.java:3172)

at org.eclipse.ui.texteditor.AbstractTextEditor.init(AbstractTextEditor.java:3197)

at org.eclipse.wst.sse.ui.StructuredTextEditor.init(StructuredTextEditor.java:2651)

at org.eclipse.ui.part.MultiPageEditorPart.addPage(MultiPageEditorPart.java:237)

at org.eclipse.ui.forms.editor.FormEditor.addPage(FormEditor.java:330)

at org.eclipse.ui.part.MultiPageEditorPart.addPage(MultiPageEditorPart.java:211)

at org.eclipse.ui.forms.editor.FormEditor.addPage(FormEditor.java:312)

at org.eclipse.m2e.editor.pom.MavenPomEditor.addSourcePage(MavenPomEditor.java:626)

at org.eclipse.m2e.editor.pom.MavenPomEditor.addPages(MavenPomEditor.java:363)

at org.eclipse.ui.forms.editor.FormEditor.createPages(FormEditor.java:140)

at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:348)

at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.createPartControl(CompatibilityPart.java:151)

at org.eclipse.ui.internal.e4.compatibility.CompatibilityEditor.createPartControl(CompatibilityEditor.java:99)

at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.create(CompatibilityPart.java:355)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:483)

at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:55)

at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:990)

at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:955)

at org.eclipse.e4.core.internal.di.InjectorImpl.inject(InjectorImpl.java:124)

at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:399)

at org.eclipse.e4.core.internal.di.InjectorImpl.make(InjectorImpl.java:318)

at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(ContextInjectionFactory.java:162)

at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.createFromBundle(ReflectionContributionFactory.java:105)

at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.doCreate(ReflectionContributionFactory.java:74)

at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.create(ReflectionContributionFactory.java:56)

at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.createWidget(ContributedPartRenderer.java:129)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:992)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:661)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:767)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$0(PartRenderingEngine.java:738)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:732)

at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:716)

at org.eclipse.e4.ui.workbench.renderers.swt.StackRenderer.showTab(StackRenderer.java:1293)

at org.eclipse.e4.ui.workbench.renderers.swt.LazyStackRenderer.postProcess(LazyStackRenderer.java:97)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:679)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:767)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$0(PartRenderingEngine.java:738)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:732)

at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:716)

at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.processContents(SWTPartRenderer.java:69)

at org.eclipse.e4.ui.workbench.renderers.swt.SashRenderer.processContents(SashRenderer.java:137)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:675)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:767)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.access$0(PartRenderingEngine.java:738)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:732)

at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:716)

at org.eclipse.e4.ui.workbench.renderers.swt.SWTPartRenderer.processContents(SWTPartRenderer.java:69)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:675)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$1.run(PartRenderingEngine.java:546)

at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:530)

at org.eclipse.e4.ui.workbench.renderers.swt.ElementReferenceRenderer.createWidget(ElementReferenceRenderer.java:70)