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POXSL : how to select a unique nodes in a nodeset
 

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  1. POXSL : how to select a unique nodes in a nodeset
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    <p>I have been reading on the different question talking about selecting unique nodes in a document (using the Muenchian method) but in my case I cannot use keys (or I do not know how) because I am working on a node set and not on the document.</p> <p>And keys cannot be set on a node-set. Basically I have a variable:</p> <pre><code>&lt;xsl:variable name="limitedSet" select=" $deviceInstanceNodeSet[position() &amp;lt;= $tableMaxCol]" /&gt; </code></pre> <p>which contains <code>&lt;deviceInstance&gt;</code> nodes which themselves containing <code>&lt;structure&gt;</code> elements the node set may be represented this way:</p> <pre><code>&lt;deviceInstance name="Demux TSchannel" deviceIndex="0"&gt; &lt;structure name="DemuxTschannelCaps"&gt; &lt;/structure&gt; &lt;/deviceInstance&gt; &lt;deviceInstance name="Demux TSchannel" deviceIndex="1"&gt; &lt;structure name="DemuxTschannelCaps"&gt; &lt;/structure&gt; &lt;/deviceInstance&gt; &lt;deviceInstance name="Demux TSchannel" deviceIndex="3"&gt; &lt;structure name="otherCaps"&gt; &lt;/structure&gt; &lt;/deviceInstance&gt; </code></pre> <p>And I do not know a to select <code>&lt;structure&gt;</code> elements that only have different name. The select would in this example return two <code>&lt;structure&gt;</code> elements, being:</p> <pre><code>&lt;structure name="DemuxTschannelCaps"&gt;&lt;/structure&gt; &lt;structure name="otherCaps"&gt;&lt;/structure&gt; </code></pre> <p>I have tried </p> <pre><code>select="$limitedSet//structure[not(@name=preceding::structure/@name)]" </code></pre> <p>but the preceding axis goes all along the document and not the <code>$limitedSet</code>?</p> <p>I am stuck, can someone help me. Thank you.</p>
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