Using one component (dataTable) id inside composite component

How can I use id of DataTable Component (Primefaces 2.2.1) inside Composite Component in Java Server Faces 2.1 ?

Now, I have a view:

<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE composition 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:ui="http://java.sun.com/jsf/facelets"
                xmlns:p="http://primefaces.prime.com.tr/ui"
                xmlns:h="http://java.sun.com/jsf/html"
                xmlns:f="http://java.sun.com/jsf/core"
                xmlns:haiq="http://java.sun.com/jsf/composite/haiqcomponents"
                template="/WEB-INF/templates/login/main.xhtml">

    <ui:define name="content">
        <h:form prependId="false">  <!-- prependId="true" ??? -->
            <p:dataTable id="leakTable" var="leak" value="#{dataExplorer.data}">   

                <p:column filterBy="#{leak.source}" headerText="source" footerText="source" filterMatchMode="contains" >  
                    <f:facet name="header">  
                        <h:outputText value="source" />  
                    </f:facet>  
                    <h:outputText value="#{leak.source}"  />  
                </p:column>  

                <!-- Few more columns here -->
            </p:dataTable> 

            <!-- Add : prefix before ID? -->
            <haiq:exporter target=":leakTable" fileName="#{msgs.fileName}" imageLibrary="images" pageOnly="false" />

        </h:form>   
    </ui:define>
</ui:composition>

My composite component:

<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
  xmlns:cc="http://java.sun.com/jsf/composite"
  xmlns:h="http://java.sun.com/jsf/html"
  xmlns:p="http://primefaces.prime.com.tr/ui">

<!-- INTERFACE -->
<cc:interface>
    <cc:attribute name="fileName" default="data" />
    <cc:attribute name="target" required="true" type="java.lang.String" />
    <cc:attribute name="pageOnly" default="true" type="java.lang.Boolean" />
    <cc:attribute name="imageLibrary" default="images" />
</cc:interface>

<!-- IMPLEMENTATION -->
<cc:implementation>
    <h:commandLink>  
        <h:graphicImage library="#{cc.attrs.imageLibrary}" name="excel.png" />  
        <p:dataExporter type="xls"
                        target="#{cc.attrs.target}" 
                        fileName="#{cc.attrs.filename}" 
                        pageOnly="#{cc.attrs.pageOnly}" />  
    </h:commandLink>  
</cc:implementation>
</html>

After view rendering, following error occurred:

javax.faces.FacesException: Cannot find component ":leakTable" in view.
at org.primefaces.component.export.DataExporter.processAction(DataExporter.java:89)
at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:769)
at javax.faces.component.UICommand.broadcast(UICommand.java:300)

Removing : before leakTable (in target attribute) or changing preperndId (in form) to true does not solve the problem.

How can I use datatable inside cc? Similar problem is described here

BalusC

Apparently you've another NamingContainer parent in the view. To be sure, open page in browser, rightclick and View Source and determine the generated ID of <p:dataTable id="leakTable">. Then, you should grab exactly that ID and prefix with :.

Alternatively, you can also bind the table component to the view and use UIComponent#getClientId() instead to dynamically refer the client ID.

<p:dataTable binding="#{leakTable}" ...>

with

<haiq:exporter target=":#{leakTable.clientId}" ...>

Unrelated to the concrete problem, I suggest to replace <!DOCTYPE><html> of your composite by <ui:component>, which is more natural and it also saves JSF from doing it impliticly everytime.

<ui:component
    xmlns="http://www.w3.org/1999/xhtml"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:cc="http://java.sun.com/jsf/composite"
    xmlns:p="http://primefaces.prime.com.tr/ui">

来源：https://stackoverflow.com/questions/7970268/using-one-component-datatable-id-inside-composite-component

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