NPE when using setFor()

[Dudley Dawson]

Hi-
I am building an HtmlPanelGrid dynamically (by binding the h:panelgrid tag to a backing bean method that builds it with the api), and I am having a problem whenever I try to call setFor(String id) on a HtmlMessage or HtmlOutputLabel. When the page renders, I get the following exception:

java.lang.NullPointerException
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.augmentIdReference(HtmlBasicRenderer.java:240)
at com.sun.faces.renderkit.html_basic.MessageRenderer.encodeEnd(MessageRenderer.java:162)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:829)
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:279)
at com.sun.faces.renderkit.html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:117)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:810)
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:271)
at com.sun.faces.renderkit.html_basic.GridRenderer.encodeChildren(GridRenderer.java:242)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:810)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:884)
at javax.faces.render.Renderer.encodeChildren(Renderer.java:137)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:810)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:884)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:890)
at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:571)
at org.ajax4jsf.framework.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
at org.ajax4jsf.framework.ajax.AjaxViewHandler.renderView(AjaxViewHandler.java:233)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:134)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:248)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:226)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:124)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:127)
at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:277)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:26)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3368)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(Unknown Source)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2117)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2023)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1359)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:200)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:172)

However, if I view the component tree, these elements exist, and indeed do have their "for" attribute set exactly as i specified. The page will render if I don't attempt to set the "for" property, but then, these components are orphaned and rather useless ;)