I don't know how to reference descendant components of composite component in update or process (alias render or execute).
I have this composite component resources/components/crud.xhtml:
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:c="http://java.sun.com/jsf/composite">
<c:interface>
<c:attribute name="controller" required="true" />
<c:facet name="fields" required="true"/>
</c:interface>
<c:implementation>
<p:dataTable
id="table"
value="#{cc.attrs.controller.autoResultModel}"
var="unit"
paginator="true"
rows="10"
lazy="true"
paginatorAlwaysVisible="true"
paginatorPosition="top"
paginatorTemplate="{CurrentPageReport} {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}"
currentPageReportTemplate="{totalRecords} records found, Page: {currentPage}/{totalPages}"
rowsPerPageTemplate="5,10,15"
sortBy="#{unit.creationTime}"
sortOrder="descending"
selectionMode="single"
selection="#{cc.attrs.controller.selected}">
<p:ajax event="rowSelect" update="editDialog trashDialog table:commands"/>
<f:facet name="header">
<h:panelGroup id="commands" layout="block">
<p:commandButton id="newButton" value="new" image="ui-icon ui-icon-plusthick" oncomplete="editDialog.show()" actionListener="#{cc.attrs.controller.clearSelected()}" process="@this" update="#{cc.clientId}" />
<p:commandButton value="edit" image="ui-icon ui-icon-wrench" onclick="editDialog.show()" type="button" disabled="#{cc.attrs.controller.selected.id == null}"/>
<p:commandButton value="delete" image="ui-icon ui-icon-trash" onclick="trashDialog.show()" type="button" disabled="#{cc.attrs.controller.selected.id == null}"/>
</h:panelGroup>
</f:facet>
<c:insertChildren/>
</p:dataTable>
<h:panelGroup id="editDialog">
<p:dialog modal="true" widgetVar="editDialog" showEffect="fold" hideEffect="puff">
<f:facet name="header">
<h:outputText value="#{bundle['create']}" rendered="#{cc.attrs.controller.selected.id == null}"/>
<h:outputText value="#{bundle['update']}" rendered="#{cc.attrs.controller.selected.id != null}"/>
</f:facet>
<h:panelGroup layout="block">
<c:renderFacet name="fields"/>
<br/>
<p:commandButton value="#{bundle['create']}" actionListener="#{cc.attrs.controller.create}" process="editDialog" update="table" oncomplete="closeDialog(xhr, status, args, editDialog)" rendered="#{cc.attrs.controller.selected.id == null}"/>
<p:commandButton value="#{bundle['update']}" actionListener="#{cc.attrs.controller.update}" process="editDialog" update="table" oncomplete="closeDialog(xhr, status, args, editDialog)" rendered="#{cc.attrs.controller.selected.id != null}"/>
<p:commandButton value="#{bundle['copy']}" actionListener="#{cc.attrs.controller.create}" process="editDialog" update="table" oncomplete="closeDialog(xhr, status, args, editDialog)" rendered="#{cc.attrs.controller.selected.id != null}">
<f:setPropertyActionListener target="#{cc.attrs.controller.selected.id}" value="#{null}"/>
</p:commandButton>
</h:panelGroup>
</p:dialog>
</h:panelGroup>
<p:dialog modal="true" header="asdasd" widgetVar="trashDialog" hideEffect="explode" showEffect="explode">
<h:panelGroup id="trashDialog" layout="block">
<h:outputText value="#{bundle['trashconfirm']}">
<f:param name="name" value="#{cc.attrs.controller.selected.name}"/>
</h:outputText>
</h:panelGroup>
<p:commandButton value="#{bundle['confirm']}" actionListener="#{cc.attrs.controller.destroy}" process="@this" update="table" oncomplete="closeDialog(xhr, status, args, trashDialog)"/>
</p:dialog>
</c:implementation>
</html>
called by this page test.xhtml:
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:cc="http://java.sun.com/jsf/composite/components">
<h:head>
<title>Default Title</title>
<h:outputStylesheet name="css/screen.css"/>
<h:outputScript name="js/common.js"/>
</h:head>
<h:body>
<p:growl id="messages" autoUpdate="true"/>
<h:form id="itemForm">
<cc:crud id="itemCrud" controller="#{itemController}">
<f:facet name="fields">
<h:panelGrid columns="3">
<h:outputLabel value="manufacturer" for="manufacturer"/>
<p:selectOneMenu id="manufacturer" value="#{itemController.selected.manufacturer}" converter="#{manufacturerController.converter}">
<f:selectItems value="#{manufacturerController.facade.findAll()}" var="e" itemLabel="#{e.title}" itemValue="#{e}"/>
</p:selectOneMenu>
<p:message for="manufacturer"/>
<h:outputLabel value="partNumber" for="partNumber"/>
<p:inputText id="partNumber" value="#{itemController.selected.partNumber}"/>
<p:message for="partNumber"/>
<h:outputLabel value="configurationIndex" for="configurationIndex"/>
<p:inputText id="configurationIndex" value="#{itemController.selected.configurationIndex}"/>
<p:message for="configurationIndex"/>
</h:panelGrid>
</f:facet>
<p:column headerText="#{bundle['manufacturer']}" filterBy="#{unit.manufacturer.title}" sortBy="#{unit.manufacturer.title}">
#{unit.manufacturer.title}
</p:column>
<p:column headerText="#{bundle['partNumber']}" filterBy="#{unit.partNumber}" sortBy="#{unit.partNumber}">
#{unit.partNumber}
</p:column>
<p:column headerText="#{bundle['configurationIndex']}" filterBy="#{unit.configurationIndex}" sortBy="#{unit.configurationIndex}">
#{unit.configurationIndex}
</p:column>
<p:column headerText="#{bundle['modifyStatus']}" filterBy="#{unit.modifyStatus}" sortBy="#{unit.modifyStatus}">
#{unit.modifyStatus}
</p:column>
<p:column headerText="#{bundle['description']}" filterBy="#{unit.description}" sortBy="#{unit.description}">
#{unit.description}
</p:column>
</cc:crud>
</h:form>
</h:body>
</html>
And I have this output:
AVVERTENZA: PWC4011: Unable to set request character encoding to UTF-8 from context /epcsdb, because request parameters have already been read, or ServletRequest.getReader() has already been called
INFO: Skipping call to libraryExists(). Please set context-param com.sun.faces.enableMissingResourceLibraryDetection to true to verify if library http://java.sun.com/jsf/composite/components actually exists
INFO: Cannot find component with identifier "itemForm:itemCrud:table:newButton" in view.
INFO: Cannot find component with identifier "itemForm:itemCrud" in view.
INFO: Cannot find component with identifier "editDialog" in view.
INFO: Cannot find component with identifier "trashDialog" in view.
INFO: Cannot find component with identifier "itemForm:itemCrud:j_idt34" in view.
Result of this is that no component is updated with any ajax call. I don't understand why "itemForm:itemCrud:table:newButton" cannot be found. It is only referenced with process="@this".
I'm using primefaces 3.0.RC1-SNAPSHOT and Mojarra 2.1.3_01.
BalusC
You need to prefix absolute client IDs with the NamingContainer separator which is by default :.
update=":#{cc.clientId}"
See also:
来源：https://stackoverflow.com/questions/8412914/how-to-reference-cc-clientid-in-ajax-update-process-render-execute