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java.lang.NullPointerException while running JUnit Plug-in Test on tools.vitruv.applications.pcmjava.seffstatements.tests.ejbtransformations and tools.vitruv.applications.pcmjava.seffstatements.tests.pojotransformations #2

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ichupakhin opened this issue Apr 16, 2020 · 1 comment
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java.lang.NullPointerException while running JUnit Plug-in Test on tools.vitruv.applications.pcmjava.seffstatements.tests.ejbtransformations and tools.vitruv.applications.pcmjava.seffstatements.tests.pojotransformations #2

ichupakhin opened this issue Apr 16, 2020 · 1 comment

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@ichupakhin
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java.lang.NullPointerException while running JUnit Plug-in Test on
tools.vitruv.applications.pcmjava.seffstatements.tests.ejbtransformations and
tools.vitruv.applications.pcmjava.seffstatements.tests.pojotransformations:

The method "public void visit(final ChangeClassifyingEventExtension changeClassifyingEvent)" from Class "tools.vitruv.domains.java.monitoreditor.ChangeResponder"
calls get(..) and then visit(..) on the Map "dispatcher", but the Map is empty, what causes a NullPointerException.

Console output:
java.lang.NullPointerException
at tools.vitruv.domains.java.monitorededitor.ChangeResponder.visit(ChangeResponder.java:129)
at tools.vitruv.domains.java.monitorededitor.methodchange.events.ChangeClassifiyingEventExtensionBase.accept(ChangeClassifiyingEventExtensionBase.java:45)
at tools.vitruv.domains.java.monitorededitor.MonitoredEditor.update(MonitoredEditor.java:209)
at tools.vitruv.domains.java.monitorededitor.astchangelistener.ASTChangeListener.notifyAll(ASTChangeListener.java:231)
at tools.vitruv.domains.java.monitorededitor.astchangelistener.ASTChangeListener.notifyAll(ASTChangeListener.java:225)
at tools.vitruv.domains.java.monitorededitor.astchangelistener.ASTChangeListener.elementChanged(ASTChangeListener.java:181)
at org.eclipse.jdt.internal.core.DeltaProcessor$3.run(DeltaProcessor.java:1755)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
at org.eclipse.jdt.internal.core.DeltaProcessor.notifyListeners(DeltaProcessor.java:1743)
at org.eclipse.jdt.internal.core.DeltaProcessor.fireReconcileDelta(DeltaProcessor.java:1594)
at org.eclipse.jdt.internal.core.DeltaProcessor.fire(DeltaProcessor.java:1553)
at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:777)
at org.eclipse.jdt.internal.core.JavaModelOperation.runOperation(JavaModelOperation.java:802)
at org.eclipse.jdt.internal.core.CompilationUnit.reconcile(CompilationUnit.java:1315)
at org.eclipse.jdt.internal.core.CompilationUnit.reconcile(CompilationUnit.java:1274)
at tools.vitruv.applications.pcmjava.tests.util.CompilationUnitManipulatorHelper.editCompilationUnit(CompilationUnitManipulatorHelper.java:38)
at tools.vitruv.applications.pcmjava.seffstatements.tests.pojotransformations.IncrementalSeffReconstructionTest.editMethod(IncrementalSeffReconstructionTest.java:327)
at tools.vitruv.applications.pcmjava.seffstatements.tests.pojotransformations.IncrementalSeffReconstructionTest.editWebGUIDownloadMethod(IncrementalSeffReconstructionTest.java:315)
at tools.vitruv.applications.pcmjava.seffstatements.tests.pojotransformations.IncrementalSeffReconstructionTest.testAddIfStatementContainingExternalCall(IncrementalSeffReconstructionTest.java:143)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:27)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:89)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:41)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:542)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:770)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:464)
at org.eclipse.pde.internal.junit.runtime.RemotePluginTestRunner.main(RemotePluginTestRunner.java:171)
at org.eclipse.pde.internal.junit.runtime.PlatformUITestHarness.lambda$0(PlatformUITestHarness.java:45)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:185)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3963)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3590)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1160)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1049)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:660)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:559)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:154)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:150)
at org.eclipse.pde.internal.junit.runtime.NonUIThreadTestApplication.runApp(NonUIThreadTestApplication.java:55)
at org.eclipse.pde.internal.junit.runtime.UITestApplication.runApp(UITestApplication.java:46)
at org.eclipse.pde.internal.junit.runtime.NonUIThreadTestApplication.start(NonUIThreadTestApplication.java:49)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594)
at org.eclipse.equinox.launcher.Main.run(Main.java:1465)
at org.eclipse.equinox.launcher.Main.main(Main.java:1438)
@ichupakhin
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The problem is faulty extention points ids:
1)point ID: changeeventextendedvisitors in /tools.vitruv.domains.java.monitorededitor/schema/changeeventextendedvisitors.exsd
2)point ID: postchange in /tools.vitruv.domains.java.monitorededitor.astchangelistener/schema
/postchange .exsd
3)point ID: postreconcile in /tools.vitruv.domains.java.monitorededitor.astchangelistener/schema
/postreconcile.exsd

An extention point id must contain at least one dot "." . Else the method org.eclipse.core.internal.registry.ExtensionRegistry.getConfigurationElementsFor(String) will return a new IConfigurationElement[] instead of one existing and therefore no extentions will be found in the method tools.vitruv.framework.util.bridges.EclipseBridge.getRegisteredExtensions(String, String, Class). Hence the map tools.vitruv.domains.java.monitorededitor.ChangeResponder.dispatcher will be empty.
Possible solution:
use as extention point ID: plugin ID + "." + simpleName. For example: "tools.vitruv.domains.java.monitorededitor" + "." + "changeeventextendedvisitors"
TODO:
Rename/change extention points in
/tools.vitruv.domains.java.monitorededitor
/tools.vitruv.domains.java.monitorededitor.astchangelistener
and corresponding extentions in
/tools.vitruv.domains.java.monitorededitor.methodchange
Also adapt the method tools.vitruv.domains.java.monitorededitor.ChangeResponder.fillDispatcherMap() according to the changed extention point id. For example:
private void fillDispatcherMap() {
for (final ChangeEventExtendedVisitor visitor : getRegisteredVisitors(
"tools.vitruv.domains.java.monitorededitor.changeeventextendedvisitors" ) {
...

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@ichupakhin