[ https://issues.jboss.org/browse/DROOLS-4786?page=com.atlassian.jira.plugi... ] Reguel Wermelinger updated DROOLS-4786: --------------------------------------- Description: NullPointer occures when using drools with java 11. The eclipse DRL editor logs warning in 'Debug' perspective since an attempt to install breakpoint support for java 11 natured projects fails. As the integrated ASM libs support up to java 12, it seems like a false positive. {{java.lang.RuntimeException: value '11' is not a valid language level at org.drools.compiler.rule.builder.dialect.java.JavaDialectConfiguration.setJavaLanguageLevel(JavaDialectConfiguration.java:102) at org.drools.eclipse.DroolsEclipsePlugin.generateParsedResource(DroolsEclipsePlugin.java:618) at org.drools.eclipse.DroolsEclipsePlugin.generateParsedResource(DroolsEclipsePlugin.java:587) at org.drools.eclipse.DroolsEclipsePlugin.parseResource(DroolsEclipsePlugin.java:492) at org.drools.eclipse.editors.DroolsLineBreakpointAdapter.canToggleLineBreakpoints(DroolsLineBreakpointAdapter.java:44) at org.eclipse.debug.internal.ui.actions.breakpoints.RetargetToggleBreakpointAction.canPerformAction(RetargetToggleBreakpointAction.java:46) at org.eclipse.debug.internal.ui.actions.RetargetAction.isTargetEnabled(RetargetAction.java:223) at org.eclipse.debug.internal.ui.actions.RetargetAction.partActivated(RetargetAction.java:162) at org.eclipse.debug.internal.ui.actions.RetargetAction.init(RetargetAction.java:94) at org.eclipse.debug.internal.ui.actions.breakpoints.RetargetBreakpointAction.init(RetargetBreakpointAction.java:56) at org.eclipse.ui.internal.WWinPluginAction.initDelegate(WWinPluginAction.java:175) at org.eclipse.ui.internal.PluginAction.createDelegate(PluginAction.java:121) at org.eclipse.ui.internal.PluginAction.selectionChanged(PluginAction.java:255) at org.eclipse.ui.internal.WWinPluginAction.refreshSelection(WWinPluginAction.java:263) at org.eclipse.ui.internal.WWinPluginAction.<init>(WWinPluginAction.java:111) at org.eclipse.ui.internal.ActionDescriptor.createAction(ActionDescriptor.java:259) at org.eclipse.ui.internal.ActionDescriptor.<init>(ActionDescriptor.java:177) at org.eclipse.ui.internal.PluginActionSetBuilder.createActionDescriptor(PluginActionSetBuilder.java:130) at org.eclipse.ui.internal.PluginActionBuilder.readElement(PluginActionBuilder.java:160) at org.eclipse.ui.internal.registry.RegistryReader.readElements(RegistryReader.java:123) at org.eclipse.ui.internal.registry.RegistryReader.readElementChildren(RegistryReader.java:112) at org.eclipse.ui.internal.PluginActionBuilder.readElement(PluginActionBuilder.java:143) at org.eclipse.ui.internal.registry.RegistryReader.readElements(RegistryReader.java:123) at org.eclipse.ui.internal.PluginActionSetBuilder.readActionExtensions(PluginActionSetBuilder.java:248) at org.eclipse.ui.internal.PluginActionSetBuilder.processActionSets(PluginActionSetBuilder.java:215) at org.eclipse.ui.internal.ActionPresentation.setActionSets(ActionPresentation.java:190) at org.eclipse.ui.internal.WorkbenchWindow.updateActionSets(WorkbenchWindow.java:2586) at org.eclipse.ui.internal.WorkbenchPage.lambda$3(WorkbenchPage.java:2978) at org.eclipse.e4.ui.services.internal.events.UIEventHandler.lambda$0(UIEventHandler.java:38) at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:236) at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:146) at org.eclipse.swt.widgets.Display.syncExec_aroundBody16(Display.java:5728) }} *Another Exception is thrown when switching from DRL edit to 'RETE TREE' tab.* {{java.lang.Exception: Unable to parse rules to show RETE view! 2 parser errors at org.drools.eclipse.editors.rete.ReteViewer.loadReteModel(ReteViewer.java:161) at org.drools.eclipse.editors.DRLRuleEditor2$3.run(DRLRuleEditor2.java:240) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:122) java.lang.RuntimeException: unknown version 11 at org.drools.compiler.commons.jci.compilers.EclipseJavaCompilerSettings.toNativeVersion(EclipseJavaCompilerSettings.java:101) at org.drools.compiler.commons.jci.compilers.EclipseJavaCompilerSettings.toNativeSettings(EclipseJavaCompilerSettings.java:112) at org.drools.compiler.commons.jci.compilers.EclipseJavaCompilerSettings.<init>(EclipseJavaCompilerSettings.java:73) at org.drools.compiler.commons.jci.compilers.EclipseJavaCompiler.compile(EclipseJavaCompiler.java:383) at org.drools.compiler.commons.jci.compilers.AbstractJavaCompiler.compile(AbstractJavaCompiler.java:49) at org.drools.compiler.rule.builder.dialect.java.JavaDialect.compileAll(JavaDialect.java:420) at org.drools.compiler.compiler.DialectCompiletimeRegistry.compileAll(DialectCompiletimeRegistry.java:61) at org.drools.compiler.compiler.PackageRegistry.compileAll(PackageRegistry.java:84) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.compileAll(KnowledgeBuilderImpl.java:1442) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.wireAllRules(KnowledgeBuilderImpl.java:925) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.addPackage(KnowledgeBuilderImpl.java:913) at org.drools.eclipse.DroolsEclipsePlugin.generateParsedResource(DroolsEclipsePlugin.java:663) at org.drools.eclipse.DroolsEclipsePlugin.parseResource(DroolsEclipsePlugin.java:518) at org.drools.eclipse.editors.rete.ReteViewer.loadReteModel(ReteViewer.java:141) at org.drools.eclipse.editors.DRLRuleEditor2$3.run(DRLRuleEditor2.java:240) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:122) }} was: NullPointer occures when using drools with java 11. The eclipse DRL editor logs warning in 'Debug' perspective since an attempt to install breakpoint support for java 11 natured projects fails. As the integrated ASM libs support up to java 12, it seems like a false positive. {{java.lang.RuntimeException: value '11' is not a valid language level at org.drools.compiler.rule.builder.dialect.java.JavaDialectConfiguration.setJavaLanguageLevel(JavaDialectConfiguration.java:102) at org.drools.eclipse.DroolsEclipsePlugin.generateParsedResource(DroolsEclipsePlugin.java:618) at org.drools.eclipse.DroolsEclipsePlugin.generateParsedResource(DroolsEclipsePlugin.java:587) at org.drools.eclipse.DroolsEclipsePlugin.parseResource(DroolsEclipsePlugin.java:492) at org.drools.eclipse.editors.DroolsLineBreakpointAdapter.canToggleLineBreakpoints(DroolsLineBreakpointAdapter.java:44) at org.eclipse.debug.internal.ui.actions.breakpoints.RetargetToggleBreakpointAction.canPerformAction(RetargetToggleBreakpointAction.java:46) at org.eclipse.debug.internal.ui.actions.RetargetAction.isTargetEnabled(RetargetAction.java:223) at org.eclipse.debug.internal.ui.actions.RetargetAction.partActivated(RetargetAction.java:162) at org.eclipse.debug.internal.ui.actions.RetargetAction.init(RetargetAction.java:94) at org.eclipse.debug.internal.ui.actions.breakpoints.RetargetBreakpointAction.init(RetargetBreakpointAction.java:56) at org.eclipse.ui.internal.WWinPluginAction.initDelegate(WWinPluginAction.java:175) at org.eclipse.ui.internal.PluginAction.createDelegate(PluginAction.java:121) at org.eclipse.ui.internal.PluginAction.selectionChanged(PluginAction.java:255) at org.eclipse.ui.internal.WWinPluginAction.refreshSelection(WWinPluginAction.java:263) at org.eclipse.ui.internal.WWinPluginAction.<init>(WWinPluginAction.java:111) at org.eclipse.ui.internal.ActionDescriptor.createAction(ActionDescriptor.java:259) at org.eclipse.ui.internal.ActionDescriptor.<init>(ActionDescriptor.java:177) at org.eclipse.ui.internal.PluginActionSetBuilder.createActionDescriptor(PluginActionSetBuilder.java:130) at org.eclipse.ui.internal.PluginActionBuilder.readElement(PluginActionBuilder.java:160) at org.eclipse.ui.internal.registry.RegistryReader.readElements(RegistryReader.java:123) at org.eclipse.ui.internal.registry.RegistryReader.readElementChildren(RegistryReader.java:112) at org.eclipse.ui.internal.PluginActionBuilder.readElement(PluginActionBuilder.java:143) at org.eclipse.ui.internal.registry.RegistryReader.readElements(RegistryReader.java:123) at org.eclipse.ui.internal.PluginActionSetBuilder.readActionExtensions(PluginActionSetBuilder.java:248) at org.eclipse.ui.internal.PluginActionSetBuilder.processActionSets(PluginActionSetBuilder.java:215) at org.eclipse.ui.internal.ActionPresentation.setActionSets(ActionPresentation.java:190) at org.eclipse.ui.internal.WorkbenchWindow.updateActionSets(WorkbenchWindow.java:2586) at org.eclipse.ui.internal.WorkbenchPage.lambda$3(WorkbenchPage.java:2978) at org.eclipse.e4.ui.services.internal.events.UIEventHandler.lambda$0(UIEventHandler.java:38) at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:236) at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:146) at org.eclipse.swt.widgets.Display.syncExec_aroundBody16(Display.java:5728) }} *Another Exception is thrown when the switching from DRL edit to 'RETE TREE' tab.* {{java.lang.Exception: Unable to parse rules to show RETE view! 2 parser errors at org.drools.eclipse.editors.rete.ReteViewer.loadReteModel(ReteViewer.java:161) at org.drools.eclipse.editors.DRLRuleEditor2$3.run(DRLRuleEditor2.java:240) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:122) java.lang.RuntimeException: unknown version 11 at org.drools.compiler.commons.jci.compilers.EclipseJavaCompilerSettings.toNativeVersion(EclipseJavaCompilerSettings.java:101) at org.drools.compiler.commons.jci.compilers.EclipseJavaCompilerSettings.toNativeSettings(EclipseJavaCompilerSettings.java:112) at org.drools.compiler.commons.jci.compilers.EclipseJavaCompilerSettings.<init>(EclipseJavaCompilerSettings.java:73) at org.drools.compiler.commons.jci.compilers.EclipseJavaCompiler.compile(EclipseJavaCompiler.java:383) at org.drools.compiler.commons.jci.compilers.AbstractJavaCompiler.compile(AbstractJavaCompiler.java:49) at org.drools.compiler.rule.builder.dialect.java.JavaDialect.compileAll(JavaDialect.java:420) at org.drools.compiler.compiler.DialectCompiletimeRegistry.compileAll(DialectCompiletimeRegistry.java:61) at org.drools.compiler.compiler.PackageRegistry.compileAll(PackageRegistry.java:84) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.compileAll(KnowledgeBuilderImpl.java:1442) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.wireAllRules(KnowledgeBuilderImpl.java:925) at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.addPackage(KnowledgeBuilderImpl.java:913) at org.drools.eclipse.DroolsEclipsePlugin.generateParsedResource(DroolsEclipsePlugin.java:663) at org.drools.eclipse.DroolsEclipsePlugin.parseResource(DroolsEclipsePlugin.java:518) at org.drools.eclipse.editors.rete.ReteViewer.loadReteModel(ReteViewer.java:141) at org.drools.eclipse.editors.DRLRuleEditor2$3.run(DRLRuleEditor2.java:240) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:122) }} -- This message was sent by Atlassian Jira (v7.13.8#713008)