NullPointerException

[Former Member]

Am getting NullPointerException when I am trying to run a sample application which displays Adobe form. Am using Developer workplace. Also I have NW Developer studio on one machine and Application Sever is on another machine. So should I have ACF configured on the Application Server machine? Or is it enough if ACF is configured on the Developer Studio machine?

This application was working fine when I deployed it with Application server and Developer studio on the same machine. This exception is coming when I try to deploy it on an Application Server in another machine.

Here is the exception:

at com.sap.tc.webdynpro.modelimpl.dynamicrfc.AiiModelClass.createNewBaseTypeDescriptor(AiiModelClass.java:256)

at com.sap.tc.webdynpro.modelimpl.dynamicrfc.AiiModelClass.descriptor(AiiModelClass.java:222)

at com.depth.model.Zdepth_Bapi_Input.<init>(Zdepth_Bapi_Input.java:51)

at com.depth.DepthModelCust.wdDoInit(DepthModelCust.java:101)

at com.depth.wdp.InternalDepthModelCust.wdDoInit(InternalDepthModelCust.java:150)

at com.sap.tc.webdynpro.progmodel.generation.DelegatingCustomController.doInit(DelegatingCustomController.java:73)

at com.sap.tc.webdynpro.progmodel.controller.Controller.initController(Controller.java:215)

at com.sap.tc.webdynpro.progmodel.controller.Controller.init(Controller.java:200)

at com.sap.tc.webdynpro.progmodel.controller.Component.getCustomControllerInternal(Component.java:448)

at com.sap.tc.webdynpro.progmodel.controller.Component.getMappableContext(Component.java:386)

at com.sap.tc.webdynpro.progmodel.controller.Component.getMappableContext(Component.java:415)

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:212)

at com.sap.tc.webdynpro.progmodel.context.NodeInfo.init(NodeInfo.java:671)

at com.sap.tc.webdynpro.progmodel.context.NodeInfo.init(NodeInfo.java:674)

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.view.ViewManager.getView(ViewManager.java:709)

at com.sap.tc.webdynpro.progmodel.view.ViewManager.bindRoot(ViewManager.java:579)

at com.sap.tc.webdynpro.progmodel.view.ViewManager.makeVisible(ViewManager.java:793)

at com.sap.tc.webdynpro.progmodel.view.ViewManager.performNavigation(ViewManager.java:296)

at com.sap.tc.webdynpro.clientserver.cal.ClientApplication.navigate(ClientApplication.java:767)

at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.navigate(ClientComponent.java:873)

at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.doNavigation(WindowPhaseModel.java:498)

at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.processRequest(WindowPhaseModel.java:144)

at com.sap.tc.webdynpro.clientserver.window.WebDynproWindow.processRequest(WebDynproWindow.java:335)

at com.sap.tc.webdynpro.clientserver.cal.AbstractClient.executeTasks(AbstractClient.java:143)

at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.doProcessing(ApplicationSession.java:299)

at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessingStandalone(ClientSession.java:711)

at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessing(ClientSession.java:665)

at com.sap.tc.webdynpro.clientserver.session.ClientSession.doProcessing(ClientSession.java:232)

at com.sap.tc.webdynpro.clientserver.session.RequestManager.doProcessing(RequestManager.java:152)

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: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)

[krishanu_biswas]

Hello Narayana,

Firstly,This exception is being thrown by the RFC model layer. Check that your RFC configuration is corrent. WD-Adobe integration framework as not been invoked so far. So please check your model layer first.

Secondly, You need an ACF on the system where your browser is and it should essentially be windows and IE combination. ACF is a windows specific component. An ACF is the bridge between the Web Dynpro javascript running in the browser and the Acrobat Reader placed within the browser. This is the componet that takes your "button click" event on the Adobe form to Web Dynpro and vice versa. Knowing this, should you need the ACF to be installed on the server ? No, right ? You only need it on the browser machine. You can develop your application on one system, deploy it on a server installed on a different physical machine and then access it from many different browsers installed on many different machines. Those browser machines are your target for ACF installations.

FYI, if you are on NW04s SP09 or more, you may try the ZCI (Zero Client Install) feature that will not require you to install anything on the client machine, which essentially means that your application will become platform and browser independent.

Best Regards,

Krish