[rules-dev] Open a BRL file from BRMS in Eclipse throws an Exception

[Michael Neale]

Also - if you open up the BRL as text - so you see a <nature> type tag
or something that could be causing that?

On Tue, Sep 22, 2009 at 10:43 PM, Bernd Rücker
<bernd.ruecker at camunda.com> wrote:
> Hey guys.
>
>
>
> Not sure if this is a bug or if it is just not supported, it appears with
> the current version of Drools 5 and JBoss Tools. If I open a brl created
> with the BRMS I get the following Exception in Eclipse:
>
>
>
> com.thoughtworks.xstream.mapper.CannotResolveClassException: nature : nature
>
>                 at
> com.thoughtworks.xstream.mapper.DefaultMapper.realClass(DefaultMapper.java:68)
>
>                 at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
>
>                 at
> com.thoughtworks.xstream.mapper.DynamicProxyMapper.realClass(DynamicProxyMapper.java:71)
>
>                 at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
>
>                 at
> com.thoughtworks.xstream.mapper.PackageAliasingMapper.realClass(PackageAliasingMapper.java:88)
>
>                 at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
>
>                 at
> com.thoughtworks.xstream.mapper.ClassAliasingMapper.realClass(ClassAliasingMapper.java:86)
>
>                 at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
>
>                 at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
>
>                 at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
>
>                 at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
>
>                 at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
>
>                 at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
>
>                 at
> com.thoughtworks.xstream.mapper.ArrayMapper.realClass(ArrayMapper.java:96)
>
>                 at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
>
>                 at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
>
>                 at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
>
>                 at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
>
>                 at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
>
>                 at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
>
>                 at
> com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38)
>
>                 at
> com.thoughtworks.xstream.mapper.CachingMapper.realClass(CachingMapper.java:52)
>
>                 at
> com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.determineType(AbstractReflectionConverter.java:347)
>
>                 at
> com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:208)
>
>                 at
> com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:162)
>
>                 at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:82)
>
>                 at
> com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63)
>
>                 at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76)
>
>                 at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:60)
>
>                 at
> com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.readItem(AbstractCollectionConverter.java:71)
>
>                 at
> com.thoughtworks.xstream.converters.collections.ArrayConverter.unmarshal(ArrayConverter.java:55)
>
>                 at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:82)
>
>                 at
> com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63)
>
>                 at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76)
>
>                 at
> com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:246)
>
>                 at
> com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:218)
>
>                 at
> com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:162)
>
>                 at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:82)
>
>                 at
> com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63)
>
>                 at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76)
>
>                 at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:60)
>
>                 at
> com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.readItem(AbstractCollectionConverter.java:71)
>
>                 at
> com.thoughtworks.xstream.converters.collections.ArrayConverter.unmarshal(ArrayConverter.java:55)
>
>                 at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:82)
>
>                 at
> com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63)
>
>                 at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76)
>
>                 at
> com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshallField(AbstractReflectionConverter.java:246)
>
>                 at
> com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.doUnmarshal(AbstractReflectionConverter.java:218)
>
>                 at
> com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:162)
>
>                 at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:82)
>
>                 at
> com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:63)
>
>                 at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:76)
>
>                 at
> com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:60)
>
>                 at
> com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:137)
>
>                 at
> com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:33)
>
>                 at
> com.thoughtworks.xstream.XStream.unmarshal(XStream.java:923)
>
>                 at
> com.thoughtworks.xstream.XStream.unmarshal(XStream.java:909)
>
>                 at
> com.thoughtworks.xstream.XStream.fromXML(XStream.java:853)
>
>                 at
> com.thoughtworks.xstream.XStream.fromXML(XStream.java:845)
>
>                 at
> org.drools.guvnor.server.util.BRXMLPersistence.unmarshal(BRXMLPersistence.java:83)
>
>                 at
> org.drools.eclipse.rulebuilder.editors.BrlPage.setModelXML(BrlPage.java:44)
>
>                 at
> org.drools.eclipse.rulebuilder.editors.RuleEditor.pageChange(RuleEditor.java:274)
>
>                 at
> org.eclipse.ui.part.MultiPageEditorPart.setActivePage(MultiPageEditorPart.java:973)
>
>                 at
> org.eclipse.ui.forms.editor.FormEditor.setActivePage(FormEditor.java:623)
>
>                 at
> org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:314)
>
>                 at
> org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:661)
>
>                 at
> org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:428)
>
>                 at
> org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:594)
>
>                 at
> org.eclipse.ui.internal.EditorReference.getEditor(EditorReference.java:266)
>
>                 at
> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2820)
>
>                 at
> org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2729)
>
>                 at
> org.eclipse.ui.internal.WorkbenchPage.access$11(WorkbenchPage.java:2721)
>
>                 at
> org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:2673)
>
>                 at
> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
>
>                 at
> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2668)
>
>                 at
> org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2652)
>
>                 at
> org.eclipse.ui.actions.OpenWithMenu.openEditor(OpenWithMenu.java:337)
>
>                 at
> org.eclipse.ui.actions.OpenWithMenu.access$0(OpenWithMenu.java:325)
>
>                 at
> org.eclipse.ui.actions.OpenWithMenu$2.handleEvent(OpenWithMenu.java:187)
>
>                 at
> org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
>
>                 at
> org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
>
>                 at
> org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3823)
>
>                 at
> org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3422)
>
>                 at
> org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2384)
>
>                 at
> org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2348)
>
>                 at
> org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2200)
>
>                 at
> org.eclipse.ui.internal.Workbench$5.run(Workbench.java:495)
>
>                 at
> org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:288)
>
>                 at
> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:490)
>
>                 at
> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
>
>                 at
> org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
>
>                 at
> org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193)
>
>                 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:386)
>
>                 at
> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
>
>                 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
> Method)
>
>                 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown
> Source)
>
>                 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown
> Source)
>
>                 at java.lang.reflect.Method.invoke(Unknown Source)
>
>                 at
> org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)
>
>                 at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
>
>                 at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
>
>
>
> Thanks
>
> Bernd
>
> --
>
> Unsere Seminare: www.camunda.com/seminare/
>
> Blog: www.bpm-guide.de
>
> ---------------------------------------------
>
> camunda services GmbH - The Business Process Company
>
> Zossener Straße 55-58 - 10961 Berlin
>
> www.camunda.com - info at camunda.com
>
> ---------------------------------------------
>
> Bernd Rücker
>
> Geschäftsführer
>
> Telefon +49 +49 30 664040 901
>
> Mobil +49 171 1473461
>
> bernd.ruecker at camunda.com
>
> ---------------------------------------------
>
> Amtsgericht Charlottenburg: HRB 113230 B
>
> Geschäftsführer: Jakob Freund, Bernd Rücker
>
> ---------------------------------------------
>
> EJB-3-Buch: http://www.ejbbuch.de/
>
> BPMN-Buch: http://www.hanser.de/buch.asp?isbn=978-3-446-41768-7
>
>
>
> _______________________________________________
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>
>



-- 
Michael D Neale
home: www.michaelneale.net
blog: michaelneale.blogspot.com