Hi
We have created a Guided Procedures Workflow which is working fine most of the time. However, sometimes, Guided Procedures runtime behaviour is rather strangely, it 's showing internal process steps as clickable workitems in the UWL. Clicking on the workitem causes a Null Pointer Exception.
Example:
-
Let's say, the workflows is as follows:
- Execute Callable Object "start"
- Decision "myDecision"
- If Decsion returns true
- Then execute Callable Object "A"
- Ese execute Callable Object "B"
Normally "myDecision" wouldn't appear in the UWL. But sometimes, it is showing up there. When we click on it, there is the following exception. After a while, everything is normal again (no internal workitems, no exceptions). Does anyone know what is happing here and what can be done to prevent it?
Kind regards
Bettina Hepp
application [webdynpro/dispatcher] Processing HTTP request to servlet [dispatcher] finished with error. The error is: java.lang.NullPointerException
at com.sap.workflow.wdgp.task.detail.TaskDetailBodyView.seedNotesContainer(TaskDetailBodyView.java:497)
at com.sap.workflow.wdgp.task.detail.TaskDetailBodyView.wdDoModifyView(TaskDetailBodyView.java:275)
at com.sap.workflow.wdgp.task.detail.wdp.InternalTaskDetailBodyView.wdDoModifyView(InternalTaskDetailBodyView.java:582)
at com.sap.tc.webdynpro.progmodel.generation.DelegatingView.doModifyView(DelegatingView.java:78)
at com.sap.tc.webdynpro.progmodel.view.View.modifyView(View.java:337)
at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.doModifyView(ClientComponent.java:481)
at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.doModifyView(WindowPhaseModel.java:551)
at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.processRequest(WindowPhaseModel.java:148)
at com.sap.tc.webdynpro.clientserver.window.WebDynproWindow.processRequest(WebDynproWindow.java:335)
at com.sap.tc.webdynpro.clientserver.cal.AbstractClient.executeTasks(AbstractClient.java:143)
clientserver.session.ApplicationSession.doProcessing(ApplicationSession.java:321)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessingStandalone(ClientSession.java:713)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessing(ClientSession.java:666)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doProcessing(ClientSession.java:250)
at com.sap.tc.webdynpro.clientserver.session.RequestManager.doProcessing(RequestManager.java:149)
at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doContent(DispatcherServlet.java:62)
at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doPost(DispatcherServlet.java:53)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:401)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:266)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:386)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:364)
at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:1039)
at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:265)
at com.sap.engine.services.httpserver.server.Client.handle(Client.java:95)
at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:175)
at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)
at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)
at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
at java.security.AccessController.doPrivileged(AccessController.java:215)
at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:102)
at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:172)