0 Replies Latest reply on Nov 30, 2010 11:49 PM by pradeep_nayak

Error using <rich:columnGroup>

pradeep_nayak Nov 30, 2010 11:49 PM

Hi When I use column group I get an error.

Im using richfaces 4 M4.

XHTML is as follows ..

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<ui:composition xmlns="http://www.w3.org/1999/xhtml"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:a4j="http://richfaces.org/a4j"
    xmlns:rich="http://richfaces.org/rich">

    <f:view>
        <h:head>
            <title>RichFaces Greeter</title>
            <link rel="stylesheet" href="style.css" type="text/css" />
        </h:head>

<h:body>
<h:form>

                <rich:dataTable value="#{wonderBean.wonders}" var="wonder">
                    <rich:column colspan="3">
                        <f:facet name="header">Wonder</f:facet>
                        <h:outputText value="#{wonder.name}" />
                        <a4j:commandLink id="link" value="#{!wonder.show?'[+]':'[-]'}"
                            reRender="link">
                            <a4j:param name="val" value="#{!wonder.show}"
                                assignTo="#{wonder.show}" />
                        </a4j:commandLink>
                    </rich:column>

                <rich:columnGroup>
                        <rich:column>
                            <a4j:outputPanel ajaxRendered="true">
                                <rich:dataTable value="#{wonder.details}" var="detail"
                                    rendered="#{wonder.show}" style="border: 0px">
                                    <rich:column>
                                        <f:facet name="header">Location</f:facet>
                                        <h:outputText value="#{detail.location}" />
                                    </rich:column>
                                    <rich:column>
                                        <f:facet name="header">Image</f:facet>
                                        <h:graphicImage value="#{detail.imageUrl}" />
                                    </rich:column>
                                </rich:dataTable>
                            </a4j:outputPanel>
                        </rich:column>

                </rich:columnGroup>
                </rich:dataTable>

            </h:form>
        </h:body>
    </f:view>
</ui:composition>

When the page executes I get the following error.

java.lang.NullPointerException: Argument Error: Parameter name is null
     com.sun.faces.renderkit.html_basic.HtmlResponseWriter.startElement(HtmlResponseWriter.java:592)
     org.richfaces.renderkit.AbstractTableBaseRenderer.encodeColumnStart(AbstractTableBaseRenderer.java:86)
     org.richfaces.renderkit.AbstractTableBaseRenderer.encodeColumn(AbstractTableBaseRenderer.java:77)
     org.richfaces.renderkit.ColumnGroupRenderer.encodeRow(ColumnGroupRenderer.java:57)
     org.richfaces.renderkit.AbstractRowsRenderer.process(AbstractRowsRenderer.java:62)
     org.richfaces.component.AbstractColumnGroup.walk(AbstractColumnGroup.java:69)
     org.richfaces.renderkit.AbstractRowsRenderer.encodeRows(AbstractRowsRenderer.java:72)
     org.richfaces.renderkit.AbstractRowsRenderer.processRows(AbstractRowsRenderer.java:80)
     org.richfaces.renderkit.AbstractRowsRenderer.doEncodeChildren(AbstractRowsRenderer.java:98)
     org.richfaces.renderkit.RendererBase.encodeChildren(RendererBase.java:159)
     javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:849)
     javax.faces.component.UIComponent.encodeAll(UIComponent.java:1643)
     org.richfaces.renderkit.DataTableRenderer.encodeRow(DataTableRenderer.java:183)
     org.richfaces.renderkit.AbstractRowsRenderer.process(AbstractRowsRenderer.java:62)
     org.ajax4jsf.model.SequenceDataModel.walk(SequenceDataModel.java:109)
     org.richfaces.component.UIDataAdaptor.walk(UIDataAdaptor.java:975)
     org.richfaces.renderkit.AbstractRowsRenderer.encodeRows(AbstractRowsRenderer.java:72)
     org.richfaces.renderkit.AbstractTableRenderer.encodeRows(AbstractTableRenderer.java:102)
     org.richfaces.renderkit.AbstractRowsRenderer.processRows(AbstractRowsRenderer.java:80)
     org.richfaces.renderkit.AbstractTableRenderer.encodeTableRows(AbstractTableRenderer.java:162)
     org.richfaces.renderkit.AbstractTableRenderer.doEncodeChildren(AbstractTableRenderer.java:209)
     org.richfaces.renderkit.RendererBase.encodeChildren(RendererBase.java:159)
     javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:849)
     javax.faces.component.UIComponent.encodeAll(UIComponent.java:1643)
     javax.faces.render.Renderer.encodeChildren(Renderer.java:164)
     javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:849)
     javax.faces.component.UIComponent.encodeAll(UIComponent.java:1643)
     javax.faces.component.UIComponent.encodeAll(UIComponent.java:1646)
     javax.faces.component.UIComponent.encodeAll(UIComponent.java:1646)
     com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:389)
     com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:127)
     javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:269)
     com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:117)
     com.sun.faces.lifecycle.Phase.doPhase(Phase.java:97)
     com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:135)
     javax.faces.webapp.FacesServlet.service(FacesServlet.java:309)


Am I doing anything wrong ?
When I remove the columngroup I dont get this error.
But column group is necessary. Is there any workaround ?