Re: [xsl] Extracting Unique element names and attributes fro

> In 2.0 you can use distinct-values() or xsl:for-each-group, but it
> always good to learn this technique.

with  XSLT 2.0 using distinct-values and Saxon extensions (saxon:evaluate)
me and my colleague Nick Ardlie, just created this code below yesterday to
list all unique elements and attributes for each element:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="2.0" xmlns:saxon="http://saxon.sf.net/";
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
    <xsl:output indent="yes" method="html"/>
    <xsl:variable name="ROOT" select="root()"/>
    <xsl:template match="/">
        <html>
            <body>
                <h1>Elements</h1>
                <ol>
                    <xsl:for-each select="distinct-values(//*/name())">
                        <xsl:sort order="ascending" select="."/>
                        <li>
                            <xsl:value-of select="."/>
                            <xsl:call-template name="LIST_ATTRIBUTES">
                                <xsl:with-param name="ELEMENT" select="."/>
                            </xsl:call-template>
                        </li>
                    </xsl:for-each>
                </ol>
            </body>
        </html>
    </xsl:template>
    <xsl:template name="LIST_ATTRIBUTES">
        <xsl:param name="ELEMENT"/>
        <xsl:variable name="XPATH_EXPR"
select="concat('$p1//*[name()=''',$ELEMENT,''']/@*/name()')"/>
        <xsl:if test="count(distinct-values(saxon:evaluate($XPATH_EXPR,
$ROOT))) &gt; 0">
            <h2>Attributes</h2>
            <ol>
                <xsl:for-each
select="distinct-values(saxon:evaluate($XPATH_EXPR, $ROOT))">
                    <xsl:sort order="ascending" select="."/>
                    <li>
                        <xsl:value-of select="."/>
                    </li>
                </xsl:for-each>
            </ol>
        </xsl:if>
    </xsl:template>
</xsl:stylesheet>

Enrico Raymundo



                                                                           
             "Andrew Welch"                                                
             <andrew.j.welch@g                                             
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> I need to list out all elements and attribute (unique) in a text file
> for mapping with other XML file.
>
> I am able to get all the elements and attributes but I am unable to
> achieve the uniqueness. Can any body help on this.

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

If you are stuck with 1.0 then you need to use a key:

<xsl:key name="names" match="*|@*" use="name()"/>

with

<xsl:for-each select="//*|//*/@*">
  <xsl:if test="generate-id(.) = generate-id(key('names', name(.))[1])">
    <xsl:value-of select="local-name()"/>

In 2.0 you can use distinct-values() or xsl:for-each-group, but it
always good to learn this technique.



--
Andrew Welch
http://andrewjwelch.com
Kernow: http://kernowforsaxon.sf.net/





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