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Good old NullPointerException

Hi, all!

I successfully deployed a local Web Dynpro DC developed on another system at my J2EE-engine. After maintaining the JCo-Connections, I receive the following error:

java.lang.NullPointerException
at com.sap.tc.webdynpro.progmodel.context.MappingInfo.getDataNode(MappingInfo.java:78)	at com.sap.tc.webdynpro.progmodel.context.MappedNodeInfo.getDataNode(MappedNodeInfo.java:199)
at com.sap.tc.webdynpro.progmodel.context.MappedNodeInfo.getStructureType(MappedNodeInfo.java:108)
at com.sap.tc.webdynpro.progmodel.context.MappedNodeInfo.getStructureType(MappedNodeInfo.java:109)
at com.sap.tc.webdynpro.progmodel.context.NodeInfo.initStructureType(NodeInfo.java:688)
at com.sap.tc.webdynpro.progmodel.context.NodeInfo.initAfterCompletedMapping(NodeInfo.java:676)
at com.sap.tc.webdynpro.progmodel.context.MappingInfo.getDataNode(MappingInfo.java:83)
at com.sap.tc.webdynpro.progmodel.context.MappingInfo.initMapping(MappingInfo.java:121)
at com.sap.tc.webdynpro.progmodel.context.MappingInfo.init(MappingInfo.java:117)
at com.sap.tc.webdynpro.progmodel.context.MappedNodeInfo.doInit(MappedNodeInfo.java:207)
at com.sap.tc.webdynpro.progmodel.context.NodeInfo.init(NodeInfo.java:654)
at com.sap.tc.webdynpro.progmodel.context.NodeInfo.init(NodeInfo.java:657)
at com.sap.tc.webdynpro.progmodel.context.Context.init(Context.java:40)
at com.sap.tc.webdynpro.progmodel.controller.Controller.init(Controller.java:199)
at com.sap.tc.webdynpro.progmodel.controller.Component.getCustomControllerInternal(Component.java:436)
at com.sap.tc.webdynpro.progmodel.controller.Component.getMappableContext(Component.java:374)
at com.sap.tc.webdynpro.progmodel.controller.Component.getMappableContext(Component.java:403)
at com.sap.tc.webdynpro.progmodel.context.MappingInfo.getDataNode(MappingInfo.java:79)
at com.sap.tc.webdynpro.progmodel.context.MappingInfo.initMapping(MappingInfo.java:121)
at com.sap.tc.webdynpro.progmodel.context.MappingInfo.init(MappingInfo.java:117)
at com.sap.tc.webdynpro.progmodel.context.MappedNodeInfo.doInit(MappedNodeInfo.java:207)
at com.sap.tc.webdynpro.progmodel.context.NodeInfo.init(NodeInfo.java:654)
at com.sap.tc.webdynpro.progmodel.context.NodeInfo.init(NodeInfo.java:657)
at com.sap.tc.webdynpro.progmodel.context.Context.init(Context.java:40)
at com.sap.tc.webdynpro.progmodel.controller.Controller.init(Controller.java:199)
at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.init(ClientComponent.java:347)
at com.sap.tc.webdynpro.clientserver.cal.ClientApplication.init(ClientApplication.java:370)
at com.sap.tc.webdynpro.clientserver.task.WebDynproMainTask.execute(WebDynproMainTask.java:608)
at com.sap.tc.webdynpro.clientserver.cal.AbstractClient.executeTasks(AbstractClient.java:59)
at com.sap.tc.webdynpro.clientserver.cal.ClientManager.doProcessing(ClientManager.java:248)
at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doWebDynproProcessing(DispatcherServlet.java:154)
at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doContent(DispatcherServlet.java:116)
at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doGet(DispatcherServlet.java:48)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:390)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:264)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:347)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:325)
at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:887)
at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:241)
at com.sap.engine.services.httpserver.server.Client.handle(Client.java:92)
at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:148)
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(Native Method)
at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:100)	at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:170)

Has anybody got any idea what could be the reason for that?

Thanks a lot in advance!

Regards,

Thomas

replied

Hi Thomas,

as I mentioned please check your mappings once again...carefully...ASAIK...SP9 overcomes this problem...

/Raj.

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