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List:       mozilla-rdf
Subject:    template question (Singling out an element)
From:       "Eric Murphy" <eric () xiowa ! com>
Date:       2001-02-16 19:45:52
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I have a scenario where I just want to list just one element from a
datasource. I'll try to explain it the best I can here.

If I have this (for example):

    urn:root -[http://www.jabber.org/rdf#jids] - (bunch of jids) ->
    [http://www.jabber.org/rdf#nickname] - (a nickname)

Now, I want to set the template to use only one of these, like this:

    urn:root -[http://www.jabber.org/rdf#jids] - (ericmurphy@jabber.org) ->
    [http://www.jabber.org/rdf#nickname] - (a nickname)

Could I just change my template code to look like this? (This code crashes):

   <tree datasources="rdf:null" id="roster-tree" ref="urn:root" flex="1">
      <template>
         <rule>

            <conditions>
               <content uri="?uri"/>

               <triple subject="?uri"
                       predicate="http://www.jabber.org/rdf#jids"
object="ericmurphy@jabber.com"/>

               <member container="ericmurphy@jabber.com" child="?jid"/>

<!-- Used to look like this

               <triple subject="?uri"
                       predicate="http://www.jabber.org/rdf#jids"
object="jids"/>

               <member container="jids" child="?jid"/>
-->

               <triple subject="?jid"
                       predicate="http://www.jabber.org/rdf#nickname"
object="?nickname"/>

            </conditions>

            <action>
               <treechildren flex="1">
                  <treeitem uri="?jid">

                     <treerow>
                        <treecell flex="1" orient="horizontal"
allowevents="true" crop="right">

                           <text value="?nickname"/>

                        </treecell>
                     </treerow>

                  </treeitem>
               </treechildren>
            </action>

         </rule>
      </template>

   </tree>

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