Path null does not point to an attribute

[Former Member]

Hi

I am trying to create a Checkbox dynamically and these are the steps i am doing.

IWDCheckBox iwdCheckbox = (IWDCheckBox) view.createElement(IWDCheckBox.class,"iwdCheckbox"+trayCount);

iwdCheckbox.setVisible(wdContext.currentVnWithdrawalScheduleElement().getVaCheckBoxVisibility());

iwdCheckbox.bindChecked("vnCheckBox_WS.vaCheckBoxSelected");

When i run the code i get the following error.

com.sap.tc.webdynpro.progmodel.context.ContextException: Path null does not point to an attribute, but to com.sap.tc.webdynpro.progmodel.generation.DelegatingView@1680ba0

Thanks in advance

Regards

NagaKishore V

[Former Member]

Can you tell how the context structure looks like?

Apart from that, you don't need to construct unique IDs yourself, just pass null as ID in the createElement() method.

Armin

[Former Member]

Hi Armin

Thanks for reply.

Context Structure

vnCheckBox_WS (0..n)

-

---

>vaCheckBoxSelected(boolean)

Regards

NagaKishore V

[Former Member]

Is this the complete context structure? Is vnCheckBox_WS a child node of the context root?

Armin

[Former Member]

Hi Armin

vnCheckBox_WS is a child node of the context root.

Regards

NagaKishore V

[Former Member]

Is this node mapped to another node that has some non-singleton ancestor?

Armin

[Former Member]

Hi Armin

It is not mapped to any other Node.

Regards

NagaKishore V

[Former Member]

Please post the complete stack trace, I guess with this CheckBox everything is OK.

Armin

[Former Member]

com.sap.tc.webdynpro.progmodel.context.ContextException: Path null does not point to an attribute, but to com.sap.tc.webdynpro.progmodel.generation.DelegatingView@1dc8ed4

at com.sap.tc.webdynpro.progmodel.context.Paths.createAttributePointer(Paths.java:94)

at com.sap.tc.webdynpro.clientserver.uielib.standard.impl.CheckBox.getChecked(CheckBox.java:258)

at com.sap.tc.webdynpro.clientserver.uielib.standard.impl.CheckBox.getChecked(CheckBox.java:295)

at com.sap.tc.webdynpro.clientimpl.html.uielib.standard.uradapter.CheckBoxAdapter.getChecked(CheckBoxAdapter.java:164)

at com.sap.tc.webdynpro.clientimpl.html.uielib.standard.uradapter.CheckBoxAdapter.getValue(CheckBoxAdapter.java:311)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.CheckBoxRenderer.render(CheckBoxRenderer.java:55)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:285)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:97)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.FlowLayoutRenderer.renderFlowLayoutItemFragment(FlowLayoutRenderer.java:252)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.FlowLayoutRenderer.renderFlowLayoutFragment(FlowLayoutRenderer.java:193)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.FlowLayoutRenderer.render(FlowLayoutRenderer.java:41)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:285)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:97)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.ScrollContainerRenderer.renderScrollContainerFragment(ScrollContainerRenderer.java:374)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.ScrollContainerRenderer.render(ScrollContainerRenderer.java:51)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:285)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:97)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.ViewContainerRenderer.renderViewContainerFragment(ViewContainerRenderer.java:118)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.ViewContainerRenderer.render(ViewContainerRenderer.java:41)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:285)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:97)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.GridLayoutRenderer.renderGridLayoutCellFragment(GridLayoutRenderer.java:739)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.GridLayoutRenderer.renderGridLayoutRowFragment(GridLayoutRenderer.java:388)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.GridLayoutRenderer.renderGridLayoutFragment(GridLayoutRenderer.java:310)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.GridLayoutRenderer.render(GridLayoutRenderer.java:71)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:285)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:97)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.ScrollContainerRenderer.renderScrollContainerFragment(ScrollContainerRenderer.java:461)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.ie6.ScrollContainerRenderer.render(ScrollContainerRenderer.java:51)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:285)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:97)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.UiWindowRenderer.render(UiWindowRenderer.java:45)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:285)

at com.sap.tc.webdynpro.clientimpl.html.renderer.uielements.base.AbstractRenderManager.render(AbstractRenderManager.java:97)

at com.sap.tc.webdynpro.clientimpl.html.client.HtmlClient.sendHtml(HtmlClient.java:545)

at com.sap.tc.webdynpro.clientimpl.html.client.HtmlClient.sendResponse(HtmlClient.java:354)

at com.sap.tc.webdynpro.clientimpl.html.client.HtmlClient.sendResponse(HtmlClient.java:252)

at com.sap.tc.webdynpro.clientimpl.html.client.HtmlClient.retrieveData(HtmlClient.java:157)

at com.sap.tc.webdynpro.clientserver.task.WebDynproMainTask.handleActionEvent(WebDynproMainTask.java:416)

at com.sap.tc.webdynpro.clientserver.task.WebDynproMainTask.execute(WebDynproMainTask.java:640)

at com.sap.tc.webdynpro.clientserver.cal.AbstractClient.executeTasks(AbstractClient.java:59)

at com.sap.tc.webdynpro.clientserver.cal.ClientManager.doProcessing(ClientManager.java:251)

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:391)

at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:265)

at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:345)

at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:323)

at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:865)

at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:240)

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:37)

at com.sap.engine.core.cluster.impl6.session.UnorderedChannel$MessageRunner.run(UnorderedChannel.java:71)

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:94)

at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:162)

[Former Member]

Is vnCheckBox_WS a singleton or a non-singleton node?

Armin

[Former Member]

Hi Nagakishre,

Check whether any elements exists for your node "vnCheckBox_WS" or for "VnWithdrawalSchedule"?

Also check whetehr you have set any value for that?

This error is due to accesing the element value which is not exists, and trying to bind null value.

Regards,

Bhavik

[Former Member]

Create a node element. I hope that would work. I believe, presently the node element is null.

Regards,

Noufal

[Former Member]

If "vnCheckBox_WS" is a non-singleton, ensure that the lead selection of its parent node (here the context root) is set.

Armin

[former_member182372]

Armin, "vnCheckBox_WS is a child node of the context root". How it can be non-singleton? Seems like the problem is that cardinality is 0..N but there is no elements in node.

Best regards, Maksim Rashchynski.