Processing XSL Keys

bonekrusher · May 1st, 2009, 11:28 AM

Hi, I am having some fundamental problems with processing the following key. Here is a example:
Stylesheet:

Code:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:fo="http://www.w3.org/1999/XSL/Format">
    <xsl:output method="text"/>
    <xsl:key name="wp-name-key" match="wp" use="@id"/>
    <xsl:template match="/">
        <xsl:for-each select="//xref">
            <xsl:value-of select="key('wp-name-key', @href)/@name"/>
        </xsl:for-each>
    </xsl:template>
</xsl:stylesheet>

XML

Code:

<root>
    <wp id="A1234" name="test"/>
    <xref href="image1.png"/> 
</root>

Why is it that I have no output result?

Thanks,

Martin Honnen · May 1st, 2009, 11:47 AM

Well you have a single 'xref' element where the 'href' attribute has the value 'image1.png'. If you pass that value to the key function it returns an empty node-set as the only 'wp' element has an 'id' attribute with value 'A1234' and not 'image1.png'.

I am not sure what you want to achieve, you would need an <xref href="A1234"/> element, then key('wp-name-key', @href)/@name would give you 'test'.

bonekrusher · May 1st, 2009, 12:00 PM

Thank you very much