Xsl find all the node that have then name like the value of an other node

Question

How I can find with Xsl all the node that have then name like the value of an other node Like these:

 <root>
    <data1>
      <subdata1>
        ...
        <selectThese></selectThese>
        ...
      </subdata1>

    </data1>
    <nodesetFind>
      <node1>selectThese</node1>
    </nodesetFind>
  </root>

the result: <selectThese></selectThese>

Answer 1

Use:

/*/data1//*[name() = /*/nodesetFind/*]

Demonstrated in an XSLT transformation:

<xsl:stylesheet version="1.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform"&gt;

 <xsl:output omit-xml-declaration="yes" indent="yes"/>
 <xsl:template match="/">
  <xsl:copy-of select="/*/data1//*[name() = /*/nodesetFind/*]"/>
 </xsl:template>
</xsl:stylesheet>

when this transformation is applied on the provided XML document:

<root>
    <data1>
      <subdata1>
        ...
        <selectThese></selectThese>
        ...
      </subdata1>

    </data1>
    <nodesetFind>
      <node1>selectThese</node1>
    </nodesetFind>
  </root>

the wanted, correct result is produced:

<selectThese></selectThese>

Answer 2

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
    <xsl:template match="/">
        <xsl:variable name="find" select="//nodesetFind/node1" />
        <root>
            <xsl:for-each select="//*[name()=$find]">
                <xsl:copy-of select="." />
            </xsl:for-each>
        </root>
    </xsl:template>
</xsl:stylesheet>

Answer 3

Another way, this stylesheet:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"&gt;
    <xsl:key name="kDataByName" match="*[ancestor::data1]" use="name()"/>
    <xsl:template match="/">
        <xsl:copy-of select="key('kDataByName',/root/nodesetFind/node1)"/>
    </xsl:template>
</xsl:stylesheet>

Output:

<selectThese></selectThese>

Note: This is XSLT only solution (Dimitre's answer is general XPath, then XSLT) because the use of fn:key. So, you need to declare the key for ussing this expression to select the nodes you want:

key('kDataByName',/root/nodesetFind/node1)