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POJSTL, composite, NamingContainer and prependId
 

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    <p>I have written a composite component and want to use the reserved EL <code>#{component.clientId}</code> to make a JQuery bind. To use this retrieved clientId in a another place in the page (outside the component), I use JSTL to store it in a view scope variable. The strange thing is that JSTL seems to prevent the natural composite component behavior of appending its id in front of its children (<code>NamingContainer</code> behavior). I know that JSTL is a little tricky, interfering with other components (<code>ui:repeat</code> for instance) because of lifecycle things, but here I don't understand this behavior.</p> <p>Some concrete code is better than this long speech:</p> <pre><code>&lt;html xmlns="http://www.w3.org/1999/xhtml" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html" xmlns:rich="http://richfaces.org/rich" xmlns:c="http://java.sun.com/jsp/jstl/core" xmlns:composite="http://java.sun.com/jsf/composite"&gt; &lt;composite:interface&gt; […] &lt;/composite:interface&gt; &lt;composite:implementation&gt; &lt;rich:dataTable id="mySoLovedDataTable" […]&gt; #{component.clientId} &lt;!-- Commenting or uncommenting this line make the whole point --&gt; &lt;c:set var="targetClientId" value="#{component.clientId}" scope="view" /&gt; […] &lt;/rich:dataTable&gt; &lt;/composite:implementation&gt; &lt;/html&gt; </code></pre> <p>With the line commented on, <code>#{component.clientId}</code> gives something like <code>j_idt261:mySoLovedDataTable</code>.</p> <p>With the line commented out, it gives just <code>mySoLovedDataTable</code>.</p>
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    1. COTo clarify, you want to use that Id from *outside* of the component, right?
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    2. COExactly. Editing for clarifying.
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    3. COBut to be clearer, the point that I'm interested in here is the impact of the JSTL code on the `prependId` behavior of the `NamingContainer`.
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