distinct values of xml

[Eugen]

Hi All!
I need your help. I have XML with structure like this:
<dataset>
<node><category>C1</category><desc>D1</desc></node>
<node><category>C2</category><desc>D2</desc></node>
<node><category>C1</category><desc>D1</desc></node>
<node><category>C3</category><desc>D3</desc></node>
...
</dataset>

I want distinct <category> and <desc> values in the kind:

C1_D1
C2_D2
C3_D3
Thanks in advance for any help.
Eugene

[Joris Gillis]

Hi,

Tempore 10:08:36, die Thursday 22 September 2005 AD, hinc in foro {comp.text.xml} scripsit Eugen <el******@web.de>:

I want distinct <category> and <desc> values in the kind:
C1_D1
C2_D2
C3_D3

In XSLT 1.0 , it's common practice to approach this as a standard grouping problem, which in it's turns is easily tackled with the Muenchian technique.

<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>

<xsl:key name="node" match="node" use="concat(category,'_',desc)"/>

<xsl:template match="dataset">
<xsl:for-each select="node[generate-id()=
generate-id(key('node',concat(category,'_',desc))[1])]">
<xsl:value-of select="concat(category,'_',desc)"/>
</xsl:for-each>
</xsl:template>

</xsl:stylesheet>
regards,
--
Joris Gillis (http://users.telenet.be/root-jg/me.html)
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