3 Replies Latest reply on Aug 20, 2015 5:45 AM by Sebastian Ganser

    process disconnected exception after accsessing process variable

    Sebastian Ganser Newbie

      Hey everyone,

       

      i am running jbpm 6.2 final with persistence in an osgi environment and i want to access a process variable in a running flow. After some search i found this code snippet to change a variables' value:

       

      WorkflowProcessInstance processInstance = (WorkflowProcessInstance) ksession.getProcessInstance(processid);

      processInstance.setVariable(variablename, value);

       

      But everytime i try to set a new value i get a runtime exception:

      java.lang.RuntimeException: Process instance 1[com.sample.bpmn] is disconnected.

          at org.jbpm.process.instance.impl.ProcessInstanceImpl.getProcess(ProcessInstanceImpl.java:100)

          at org.jbpm.workflow.instance.impl.WorkflowProcessInstanceImpl.setVariable(WorkflowProcessInstanceImpl.java:284)

          at de.cjt.estuss.core.jbpm.impl.ProcessManager.setSpecificProcessVariable(ProcessManager.java:419)

          at de.cjt.estuss.vacation.jbpm.uiprovider.VacationObservingTaskDialog.completeTask(VacationObservingTaskDialog.java:217)

          at de.cjt.estuss.vacation.jbpm.uiprovider.VacationObservingTaskDialog.accept(VacationObservingTaskDialog.java:171)

          at de.cjt.estuss.vacation.jbpm.uiprovider.VacationObservingTaskDialog.acceptPressed(VacationObservingTaskDialog.java:244)

          at de.cjt.estuss.vacation.jbpm.uiprovider.VacationObservingTaskDialog.access$2(VacationObservingTaskDialog.java:243)

          at de.cjt.estuss.vacation.jbpm.uiprovider.VacationObservingTaskDialog$2.handleEvent(VacationObservingTaskDialog.java:305)

          at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:86)

          at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:700)

          at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:602)

          at org.eclipse.swt.widgets.Display.executeNextEvent(Display.java:1212)

          at org.eclipse.swt.widgets.Display.runPendingMessages(Display.java:1193)

          at org.eclipse.swt.widgets.Display.safeReadAndDispatch(Display.java:1176)

          at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1168)

          at org.eclipse.jface.window.Window.runEventLoop(Window.java:857)

          at org.eclipse.jface.window.Window.open(Window.java:833)

          at de.cjt.estuss.vacation.jbpm.uiprovider.VacationObservingTask.action(VacationObservingTask.java:36)

          at de.cjt.estuss.core.ui.home.TaskOverview$ActionSelectionListener.widgetSelected(TaskOverview.java:146)

          at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:262)

          at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:86)

          at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:700)

          at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:602)

          at org.eclipse.swt.widgets.Display.executeNextEvent(Display.java:1212)

          at org.eclipse.swt.widgets.Display.runPendingMessages(Display.java:1193)

          at org.eclipse.swt.widgets.Display.safeReadAndDispatch(Display.java:1176)

          at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1168)

          at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1136)

          at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)

          at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1017)

          at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)

          at org.eclipse.rap.e4.E4EntryPointFactory.createWorkbench(E4EntryPointFactory.java:86)

          at org.eclipse.rap.e4.E4EntryPointFactory.access$0(E4EntryPointFactory.java:60)

          at org.eclipse.rap.e4.E4EntryPointFactory$1.createUI(E4EntryPointFactory.java:51)

          at org.eclipse.rap.rwt.internal.lifecycle.RWTLifeCycle.createUI(RWTLifeCycle.java:172)

          at org.eclipse.rap.rwt.internal.lifecycle.RWTLifeCycle$UIThreadController.run(RWTLifeCycle.java:284)

          at java.lang.Thread.run(Unknown Source)

          at org.eclipse.rap.rwt.internal.lifecycle.UIThread.run(UIThread.java:105)

       

      Is this the right way or is there a better way to change a process variable (without humantask interaction)?

       

      Regards,

      Sebastian