[ http://issues.apache.org/jira/browse/MYFACES-520?page=comments#action_12322734 ]
Peter Mahoney commented on MYFACES-520: --------------------------------------- Interestingly, if the patch is applied without the "&& childState != null", then the SelectOneMenu component does now work, but the submit still fails with the same problem when processing the inputText field. I will look to try and produce a suitable example of the problem. Thanks > NPE in UIData.restoreDescendantComponentStates() > ------------------------------------------------ > > Key: MYFACES-520 > URL: http://issues.apache.org/jira/browse/MYFACES-520 > Project: MyFaces > Type: Bug > Components: Implementation > Versions: Nightly Build > Reporter: Peter Mahoney > Assignee: Mathias Broekelmann > > I have a form which contains some inputText fields (one of which is > required), and a dataTable which contains an inputText field and a > selectOneMenu field, plus and inner dataTable containing inputText fields. > When a value is entered in the required inputText field, the form submits > successfully. However, when the required field is left blank the following > exception is thrown when processing the selectOneMenu field in the outer > dataTable: > java.lang.NullPointerException > at > javax.faces.component.UIData.restoreDescendantComponentStates(UIData.java:221) > at > javax.faces.component.UIData.restoreDescendantComponentStates(UIData.java:233) > at > javax.faces.component.UIData.restoreDescendantComponentStates(UIData.java:233) > at > javax.faces.component.UIData.restoreDescendantComponentStates(UIData.java:233) > at javax.faces.component.UIData.setRowIndex(UIData.java:191) > at > org.apache.myfaces.renderkit.html.HtmlTableRendererBase.encodeInnerHtml(HtmlTableRendererBase.java:135) > at > org.apache.myfaces.renderkit.html.HtmlTableRendererBase.encodeChildren(HtmlTableRendererBase.java:94) > at > javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:319) > at > org.apache.myfaces.renderkit.RendererUtils.renderChild(RendererUtils.java:444) > at > org.apache.myfaces.renderkit.RendererUtils.renderChildren(RendererUtils.java:427) > at > org.apache.myfaces.renderkit.RendererUtils.renderChild(RendererUtils.java:448) > at > org.apache.myfaces.renderkit.RendererUtils.renderChildren(RendererUtils.java:427) > at > org.apache.myfaces.renderkit.RendererUtils.renderChild(RendererUtils.java:448) > at > org.apache.myfaces.renderkit.RendererUtils.renderChildren(RendererUtils.java:427) > at > org.apache.myfaces.renderkit.RendererUtils.renderChild(RendererUtils.java:448) > at > org.apache.myfaces.renderkit.RendererUtils.renderChildren(RendererUtils.java:427) > at > org.apache.myfaces.renderkit.RendererUtils.renderChild(RendererUtils.java:448) > at > org.apache.myfaces.renderkit.RendererUtils.renderChildren(RendererUtils.java:427) > at > org.apache.myfaces.renderkit.html.HtmlGroupRendererBase.encodeEnd(HtmlGroupRendererBase.java:62) > at > javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:331) > at javax.faces.webapp.UIComponentTag.encodeEnd(UIComponentTag.java:349) > at javax.faces.webapp.UIComponentTag.doEndTag(UIComponentTag.java:253) > at > org.apache.myfaces.taglib.UIComponentBodyTagBase.doEndTag(UIComponentBodyTagBase.java:55) > at > org.apache.jsp.cppolls_jsp._jspx_meth_h_panelGroup_0(cppolls_jsp.java:297) > at > org.apache.jsp.cppolls_jsp._jspx_meth_f_subview_0(cppolls_jsp.java:255) > at org.apache.jsp.cppolls_jsp._jspx_meth_f_view_0(cppolls_jsp.java:134) > ... > The following change to UIData seems to fix the problem: > ... > if (descendantStateIterator != null > && descendantStateIterator.hasNext()) > { > System.out.println("has dsi"); > Object[] object = (Object[]) descendantStateIterator.next(); > childState = object[0]; > descendantState = object[1]; > if (component instanceof EditableValueHolder && childState != > null) > { > ((EditableValueHolderState) childState) > .restoreState((EditableValueHolder) component); > } > } > ... > However, should this patch be necessary, or is there a problem elsewhere? -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
