[jboss-user] [jBPM Users] - jBPM & BeanShell: fail with osgi classpaths

[Rasun]

Good day,

Currently I'm working on a RCP project with jBPM 3. At this very moment I'm stuck while trying to execute a process. The processDefinition.xml starts executing and at a certain moment, when it reaches a part where a Script object is started, a DelegationException is thrown.
Prior to this exception, I noticed that BeanShell did not seem to be able to resolve the OSGi classpath I use where certain source/config files are located.

Debugging the code learns that the cause is located somewhere in the integrated BeanShell code (can't tell where exactly, as I don't have the source code available); it seems that BeanShell does not use proper classpaths (confirming OSGi standards), while my RCP based project does.
As far as I know, BeanShell does 'something' with the classpaths/classloaders which seemingly affects the process in a negative way.

Can anyone suggest a way to make jBPM/BeanShell understand how to use the proper classpaths or other, if the probable cause does not concern the classpaths/OSGi aspects, possibility?


Thanks for the effort! Hope that I provided enough info about the problem here, if not then just yell ;).



=== Environment ==============================
- jBPM Version: 3
- JDK: 1.6.0_17
- Configuration : Use the default jbpm.cfg.xml with jbpm.jar lib, no custom config file used.
- Libraries : using all default libraries from jBPM, no custom or changes made.

=== Stacktrace ==============================

  | action threw exception: script evaluation exception
  | org.jbpm.graph.def.DelegationException: script evaluation exception
  |     at org.jbpm.graph.action.Script.eval(Script.java:139)
  |     at org.jbpm.graph.action.Script.eval(Script.java:73)
  |     at org.jbpm.graph.action.Script.execute(Script.java:62)
  |     at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:264)
  |     at org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:220)
  |     at org.jbpm.graph.def.GraphElement.fireAndPropagateEvent(GraphElement.java:190)
  |     at org.jbpm.graph.def.GraphElement.fireAndPropagateEvent(GraphElement.java:203)
  |     at org.jbpm.graph.def.GraphElement.fireEvent(GraphElement.java:174)
  |     at org.jbpm.graph.def.Node.leave(Node.java:382)
  |     at org.jbpm.graph.node.StartState.leave(StartState.java:70)
  |     at org.jbpm.graph.exe.Token.signal(Token.java:195)
  |     at org.jbpm.graph.exe.Token.signal(Token.java:140)
  |     at org.jbpm.graph.exe.ProcessInstance.signal(ProcessInstance.java:271)
  |     at nl.mindef.c2sc.titaan.uni.UNI.run(Unknown Source)
  |     at uni.gui.app.main.main.UniRunner.start(UniRunner.java:209)
  |     at uni.gui.app.main.data.rbb.RbbDevice.start(RbbDevice.java:113)
  |     at uni.gui.app.main.handlers.dashboard.StartProcessHandler.execute(StartProcessHandler.java:46)
  |     at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:281)
  |     at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476)
  |     at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:178)
  |     at org.eclipse.ui.internal.handlers.SlaveHandlerService.executeCommand(SlaveHandlerService.java:253)
  |     at org.eclipse.ui.internal.handlers.SlaveHandlerService.executeCommand(SlaveHandlerService.java:253)
  |     at uni.gui.app.main.views.DashboardView$1.widgetSelected(DashboardView.java:99)
  |     at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:228)
  |     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 uni.gui.app.base.Application.start(Application.java:27)
  |     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(NativeMethodAccessorImpl.java:39)
  |     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  |     at java.lang.reflect.Method.invoke(Method.java:597)
  |     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)
  |     at org.eclipse.equinox.launcher.Main.main(Main.java:1212)
  | Caused by: java.lang.NullPointerException: Null Pointer in Method Invocation
  |     at bsh.Name.invokeMethod(Unknown Source)
  |     at bsh.BSHMethodInvocation.eval(Unknown Source)
  |     at bsh.BSHPrimaryExpression.eval(Unknown Source)
  |     at bsh.BSHPrimaryExpression.eval(Unknown Source)
  |     at bsh.Interpreter.eval(Unknown Source)
  |     at bsh.Interpreter.eval(Unknown Source)
  |     at bsh.Interpreter.eval(Unknown Source)
  |     at org.jbpm.graph.action.Script.eval(Script.java:130)
  | 

View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4264287#4264287

Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4264287