Error in execution of EJB model

[Former Member]

Hi All ,

I am using EJB model in my web dynpro dc which is having two wd comp.CompA is firing plug to interfaceview of compB.b4 firing plug its calling showDetails() method from interface controller of compB and executing model based on data sent by compA. When i am clicking link for the first time its working fine.i click link for the second time i am getting error as given below.

also this EJB model is used by both (compA , compB). I have written code to create model instance in init of controllers of both components.

com.sap.tc.cmiimpl.base.exception.BaseCMIImplRuntimeException: No object for mandatory target role 'return' of model class 'Response_HrHelpDeskLocal_getAllPolicyDocuments' with cardinality 'ONE' maintained

at com.sap.tc.cmiimpl.base.model.BaseGenericModelClass.getRelatedModelObject(BaseGenericModelClass.java:403)

at com.apl.hrhlpdyn.model.Response_HrHelpDeskLocal_getAllPolicyDocuments.getReturn(Response_HrHelpDeskLocal_getAllPolicyDocuments.java:33)

at com.apl.hrhlpdyn.policydoc.wdp.IPublicPolicyDocs$IGetAllPolicyDocumentsReturnNode.doSupplyElements(IPublicPolicyDocs.java:1660)

at com.sap.tc.webdynpro.progmodel.context.DataNode.supplyElements(DataNode.java:100)

at com.sap.tc.webdynpro.progmodel.context.Node.getElementListAsObject(Node.java:242)

at com.sap.tc.webdynpro.progmodel.context.MappedNode.createMappedElementList(MappedNode.java:78)

at com.sap.tc.webdynpro.progmodel.context.MappedNode.supplyElements(MappedNode.java:69)

at com.sap.tc.webdynpro.progmodel.context.Node.getElementListAsObject(Node.java:242)

at com.sap.tc.webdynpro.progmodel.context.Node.getElementList(Node.java:259)

at com.sap.tc.webdynpro.progmodel.context.Node.getChildNodeInternal(Node.java:950)

at com.sap.tc.webdynpro.progmodel.context.Paths.followPath(Paths.java:1368)

at com.sap.tc.webdynpro.progmodel.context.Paths.followPath(Paths.java:1339)

at com.sap.tc.webdynpro.progmodel.context.Paths.isValid(Paths.java:922)

at com.sap.tc.webdynpro.clientserver.uielib.standard.impl.Table._isValidBindingOfPrimaryProperty(Table.java:973)

at com.sap.tc.webdynpro.progmodel.view.UIElement.getEnabled(UIElement.java:366)

at com.sap.tc.webdynpro.clientserver.uielib.standard.uradapter.TableAdapter._init(TableAdapter.java:22926)

at com.sap.tc.webdynpro.clientserver.uielib.standard.uradapter.TableAdapter.setViewAndNodeElement(TableAdapter.java:360)

at com.sap.tc.webdynpro.clientserver.uielements.adaptmgr.URAdapterManager.getAdapterFor(URAdapterManager.java:348)

at com.sap.tc.webdynpro.clientserver.uielements.adaptmgr.URAdapterManager.getAdapterFor(URAdapterManager.java:124)

at com.sap.tc.webdynpro.clientserver.uielements.adaptbase.AbstractAdapter.getAdapterFor(AbstractAdapter.java:814)

at com.sap.tc.webdynpro.clientserver.uielib.standard.uradapter.GridLayoutAdapter$Cells.getContent(GridLayoutAdapter.java:978)

at com.sap.tc.webdynpro.clientserver.uielib.standard.uradapter.GridLayoutAdapter$Cells.getParameter(GridLayoutAdapter.java:692)

at com.sap.tc.ls.renderer.ie6.LSGridLayoutRenderer.renderGridLayoutCellFragment(LSGridLayoutRenderer.java:830)

at com.sap.tc.ls.renderer.ie6.LSGridLayoutRenderer.renderGridLayoutRowFragment(LSGridLayoutRenderer.java:423)

at com.sap.tc.ls.renderer.ie6.LSGridLayoutRenderer.renderGridLayoutFragment(LSGridLayoutRenderer.java:350)

at com.sap.tc.ls.renderer.ie6.LSGridLayoutRenderer.render(LSGridLayoutRenderer.java:124)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:151)

at com.sap.tc.webdynpro.clientimpl.html.client.RenderManager.render(RenderManager.java:505)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:129)

at com.sap.tc.ls.renderer.ie6.LSTrayRenderer.renderTrayFragment(LSTrayRenderer.java:1648)

at com.sap.tc.ls.renderer.ie6.LSTrayRenderer.render(LSTrayRenderer.java:157)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:151)

at com.sap.tc.webdynpro.clientimpl.html.client.RenderManager.render(RenderManager.java:505)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:129)

at com.sap.tc.ls.renderer.ie6.LSViewContainerRenderer.renderViewContainerFragment(LSViewContainerRenderer.java:202)

at com.sap.tc.ls.renderer.ie6.LSViewContainerRenderer.render(LSViewContainerRenderer.java:118)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:151)

at com.sap.tc.webdynpro.clientimpl.html.client.RenderManager.render(RenderManager.java:505)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:129)

at com.sap.tc.ls.renderer.ie6.LSViewContainerRenderer.renderViewContainerFragment(LSViewContainerRenderer.java:202)

at com.sap.tc.ls.renderer.ie6.LSViewContainerRenderer.render(LSViewContainerRenderer.java:118)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:151)

at com.sap.tc.webdynpro.clientimpl.html.client.RenderManager.render(RenderManager.java:505)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:129)

at com.sap.tc.ls.renderer.ie6.LSFlowLayoutRenderer.renderFlowLayoutItemFragment(LSFlowLayoutRenderer.java:271)

at com.sap.tc.ls.renderer.ie6.LSFlowLayoutRenderer.renderFlowLayoutFragment(LSFlowLayoutRenderer.java:243)

at com.sap.tc.ls.renderer.ie6.LSFlowLayoutRenderer.render(LSFlowLayoutRenderer.java:118)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:151)

at com.sap.tc.webdynpro.clientimpl.html.client.RenderManager.render(RenderManager.java:505)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:129)

at com.sap.tc.ls.renderer.ie6.LSScrollContainerRenderer.renderScrollContainerFragment(LSScrollContainerRenderer.java:672)

at com.sap.tc.ls.renderer.ie6.LSScrollContainerRenderer.render(LSScrollContainerRenderer.java:131)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:151)

at com.sap.tc.webdynpro.clientimpl.html.client.RenderManager.render(RenderManager.java:505)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:129)

at com.sap.tc.ls.renderer.ie6.LSTabStripRenderer.renderTabStripStaticContainer(LSTabStripRenderer.java:1795)

at com.sap.tc.ls.renderer.ie6.LSTabStripRenderer.renderTabStripFragment(LSTabStripRenderer.java:1039)

at com.sap.tc.ls.renderer.ie6.LSTabStripRenderer.render(LSTabStripRenderer.java:154)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:151)

at com.sap.tc.webdynpro.clientimpl.html.client.RenderManager.render(RenderManager.java:505)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:129)

at com.sap.tc.ls.renderer.ie6.LSGridLayoutRenderer.renderGridLayoutCellFragment(LSGridLayoutRenderer.java:830)

at com.sap.tc.ls.renderer.ie6.LSGridLayoutRenderer.renderGridLayoutRowFragment(LSGridLayoutRenderer.java:423)

at com.sap.tc.ls.renderer.ie6.LSGridLayoutRenderer.renderGridLayoutFragment(LSGridLayoutRenderer.java:350)

at com.sap.tc.ls.renderer.ie6.LSGridLayoutRenderer.render(LSGridLayoutRenderer.java:124)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:151)

at com.sap.tc.webdynpro.clientimpl.html.client.RenderManager.render(RenderManager.java:505)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:129)

at com.sap.tc.ls.renderer.ie6.LSTrayRenderer.renderTrayFragment(LSTrayRenderer.java:1648)

at com.sap.tc.ls.renderer.ie6.LSTrayRenderer.render(LSTrayRenderer.java:157)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:151)

at com.sap.tc.webdynpro.clientimpl.html.client.RenderManager.render(RenderManager.java:505)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:129)

at com.sap.tc.ls.renderer.ie6.LSViewContainerRenderer.renderViewContainerFragment(LSViewContainerRenderer.java:202)

at com.sap.tc.ls.renderer.ie6.LSViewContainerRenderer.render(LSViewContainerRenderer.java:118)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:151)

at com.sap.tc.webdynpro.clientimpl.html.client.RenderManager.render(RenderManager.java:505)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:129)

at com.sap.tc.ls.renderer.ie6.LSGridLayoutRenderer.renderGridLayoutCellFragment(LSGridLayoutRenderer.java:830)

at com.sap.tc.ls.renderer.ie6.LSGridLayoutRenderer.renderGridLayoutRowFragment(LSGridLayoutRenderer.java:423)

at com.sap.tc.ls.renderer.ie6.LSGridLayoutRenderer.renderGridLayoutFragment(LSGridLayoutRenderer.java:350)

at com.sap.tc.ls.renderer.ie6.LSGridLayoutRenderer.render(LSGridLayoutRenderer.java:124)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:151)

at com.sap.tc.webdynpro.clientimpl.html.client.RenderManager.render(RenderManager.java:505)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:129)

at com.sap.tc.ls.renderer.ie6.LSScrollContainerRenderer.renderScrollContainerFragment(LSScrollContainerRenderer.java:672)

at com.sap.tc.ls.renderer.ie6.LSScrollContainerRenderer.render(LSScrollContainerRenderer.java:131)

at com.sap.tc.webdynpro.clientimpl.html.renderer.lightspeed.base.LSRenderManager.render(LSRenderManager.java:151)

at com.sap.tc.webdynpro.clientimpl.html.client.RenderManager.render(RenderManager.java:505)

at com.sap.tc.webdynpro.clientimpl.html.client.RenderManager.render(RenderManager.java:273)

at com.sap.tc.webdynpro.clientimpl.html.client.HtmlClient.getHtmlEtc(HtmlClient.java:1588)

at com.sap.tc.webdynpro.clientimpl.html.client.HtmlClient.fillDynamicTemplateContext(HtmlClient.java:892)

at com.sap.tc.webdynpro.clientimpl.html.client.HtmlClient.sendResponse(HtmlClient.java:2207)

at com.sap.tc.webdynpro.clientimpl.html.client.HtmlClient.retrieveData(HtmlClient.java:243)

at com.sap.tc.webdynpro.clientserver.phases.RetrieveDataPhase.execute(RetrieveDataPhase.java:69)

at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.processRequestPartly(WindowPhaseModel.java:161)

at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.doProcessRequest(WindowPhaseModel.java:109)

at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.processRequest(WindowPhaseModel.java:96)

at com.sap.tc.webdynpro.clientserver.window.WebDynproWindow.processRequest(WebDynproWindow.java:469)

at com.sap.tc.webdynpro.clientserver.cal.AbstractClient.executeTasks(AbstractClient.java:52)

at com.sap.tc.webdynpro.clientserver.cal.ClientApplication.doExecute(ClientApplication.java:1431)

at com.sap.tc.webdynpro.clientserver.cal.ClientApplication.doProcessing(ClientApplication.java:1251)

at com.sap.tc.webdynpro.serverimpl.core.sessionctx.AbstractExecutionContextDispatcher.delegateToApplicationDoProcessing(AbstractExecutionContextDispatcher.java:158)

at com.sap.tc.webdynpro.serverimpl.wdc.sessionctx.DispatchHandlerForAppProcessing.doService(DispatchHandlerForAppProcessing.java:35)

at com.sap.tc.webdynpro.serverimpl.wdc.sessionctx.AbstractDispatchHandler.service(AbstractDispatchHandler.java:116)

at com.sap.engine.services.servlets_jsp.server.deploy.impl.module.IRequestDispatcherImpl.dispatch(IRequestDispatcherImpl.java:93)

at com.sap.tc.webdynpro.serverimpl.wdc.sessionctx.ExecutionContextDispatcher.dispatchToApplicationDoProcessing(ExecutionContextDispatcher.java:114)

at com.sap.tc.webdynpro.serverimpl.core.sessionctx.AbstractExecutionContextDispatcher.dispatch(AbstractExecutionContextDispatcher.java:81)

at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.dispatch(ApplicationSession.java:507)

at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.dispatch(ApplicationSession.java:527)

at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.doApplicationProcessingStandalone(ApplicationSession.java:458)

at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.doProcessing(ApplicationSession.java:249)

at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessing(ClientSession.java:699)

at com.sap.tc.webdynpro.clientserver.session.ClientSession.doProcessing(ClientSession.java:231)

at com.sap.tc.webdynpro.clientserver.session.RequestManager.doProcessing(RequestManager.java:231)

at com.sap.tc.webdynpro.serverimpl.core.sessionctx.AbstractExecutionContextDispatcher.delegateToRequestManager(AbstractExecutionContextDispatcher.java:205)

at com.sap.tc.webdynpro.serverimpl.wdc.sessionctx.DispatchHandlerForRequestManager.doService(DispatchHandlerForRequestManager.java:38)

at com.sap.tc.webdynpro.serverimpl.wdc.sessionctx.AbstractDispatchHandler.service(AbstractDispatchHandler.java:116)

at com.sap.engine.services.servlets_jsp.server.deploy.impl.module.IRequestDispatcherImpl.dispatch(IRequestDispatcherImpl.java:93)

at com.sap.tc.webdynpro.serverimpl.wdc.sessionctx.ExecutionContextDispatcher.dispatchToRequestManager(ExecutionContextDispatcher.java:140)

at com.sap.tc.webdynpro.serverimpl.core.sessionctx.AbstractExecutionContextDispatcher.dispatch(AbstractExecutionContextDispatcher.java:93)

at com.sap.tc.webdynpro.serverimpl.core.sessionctx.AbstractExecutionContextDispatcher.dispatch(AbstractExecutionContextDispatcher.java:105)

at com.sap.tc.webdynpro.serverimpl.core.AbstractDispatcherServlet.doContent(AbstractDispatcherServlet.java:87)

at com.sap.tc.webdynpro.serverimpl.core.AbstractDispatcherServlet.doPost(AbstractDispatcherServlet.java:61)

[former_member185086]

Hi

No object for mandatory target role 'return' of model class.

Do the following checks

1. Return node is model node or its a mapping to model node.(Both r different), Since u have bound it to table so it should be mapping to model node.(for check --create one context node here u will find 4 option Mapping ,Model binding etc I am talking about this mapping)

2.Check the size of that return node if it is 0 then see the mapping .

3.If is it working fine in WSnavigator then most probably its a problem of mapping, and other could be after executing the model invalidate the response node(I considered u know this)

Let see

Best Regards

Satish Kumar

[Former Member]

Hi Satish ,

i added invalidate code after executing EJB model. Still i was facing same problem. then i made changes at ejb side. If my session bean method is returning null at tht point i m getting tht error . So i am returning everywhere just opnject of return type class. I know it is strange as i have many session bean methods having similar structure , and there i am facind such exeception although i am returning null.

Thnx and regards

Kavita

[former_member185086]

Hi

No object for mandatory target role 'return' of model class 'Response_HrHelpDeskLocal_getAllPolicyDocuments' with cardinality 'ONE' maintained

It seems some implementation error of EJB classes . Take the help from this [Thread|https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/502f70a8-33a4-2b10-3dbe-bdcb5e25c6da] about uses of EJB in WebDynpro App.

If error persist then contact the person who wrote this EJB classes.

Best Regards

Satish Kumar

[Former Member]

Thnx for quick reply. I have created web service for same session bean , and tested from web service navigator. Its working from there. Even i am executing model for other methods from same session bean in component and those models are also working fine. also i would like to mention i am binding return node to table then i am getting error. if i dnt bind return node with table thn i am not getting above exception