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  1. Drools
  2. DROOLS-1511

NullPointerException when running sample projects

    Details

    • Steps to Reproduce:
      Hide
      1. Install Eclipse Neon.
      2. Install Drools plugin (7.0.0-SNAPSHOT)
      3. Add Drools runtime (7.0.0-SNAPSHOT)
      4. Create Drools project with samples (Set build to Java and Drools Runtime classes)
      5. Run one of the samples
      Show
      Install Eclipse Neon. Install Drools plugin (7.0.0-SNAPSHOT) Add Drools runtime (7.0.0-SNAPSHOT) Create Drools project with samples (Set build to Java and Drools Runtime classes) Run one of the samples
    • Docs QE Status:
      NEW
    • QE Status:
      NEW

      Description

      NullPointerException is thrown when running sample project using Drools and Java Runtime classes because KieSession is not created.

      Eclipse log:
      !SESSION 2017-04-04 12:39:38.638 -----------------------------------------------
      eclipse.buildId=4.6.3.M20170301-0400
      java.version=1.8.0_121
      java.vendor=Oracle Corporation
      BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US
      Framework arguments: -product org.eclipse.epp.package.jee.product
      Command-line arguments: -os linux -ws gtk -arch x86_64 -product org.eclipse.epp.package.jee.product

      !ENTRY org.drools.eclipse 4 120 2017-04-04 12:41:31.737
      !MESSAGE Internal error in Drools Plugin:
      !STACK 1
      Java Model Exception: Java Model Status [Build path contains duplicate entry: 'DROOLS/Drools' for project 'TestProject']
      at org.eclipse.jdt.internal.core.JavaModelOperation.runOperation(JavaModelOperation.java:786)
      at org.eclipse.jdt.internal.core.JavaProject.setRawClasspath(JavaProject.java:3097)
      at org.eclipse.jdt.internal.core.JavaProject.setRawClasspath(JavaProject.java:3059)
      at org.eclipse.jdt.internal.core.JavaProject.setRawClasspath(JavaProject.java:3112)
      at org.drools.eclipse.util.DroolsRuntimeManager.addBuilder(DroolsRuntimeManager.java:122)
      at org.drools.eclipse.action.ConvertToDroolsProjectAction.run(ConvertToDroolsProjectAction.java:45)
      at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:247)
      at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:565)
      at org.eclipse.jface.action.ActionContributionItem.lambda$4(ActionContributionItem.java:397)
      at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
      at org.eclipse.swt.widgets.Display.sendEvent(Display.java:5227)
      at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1340)
      at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4561)
      at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4151)
      at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1121)
      at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
      at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1022)
      at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150)
      at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:693)
      at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
      at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:610)
      at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
      at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:138)
      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:498)
      at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673)
      at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610)
      at org.eclipse.equinox.launcher.Main.run(Main.java:1519)
      at org.eclipse.equinox.launcher.Main.main(Main.java:1492)
      !SUBENTRY 1 org.eclipse.jdt.core 4 977 2017-04-04 12:41:31.739
      !MESSAGE Build path contains duplicate entry: 'DROOLS/Drools' for project 'TestProject'

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              • Assignee:
                KrisVerlaenen Kris Verlaenen
                Reporter:
                tomasdavidorg Tomas David
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                Dates

                • Created:
                  Updated:
                  Resolved: