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RE: grouping (was: if or template?)
- To: "'xsl-list at mulberrytech dot com'" <xsl-list at mulberrytech dot com>
- Subject: RE: grouping (was: if or template?)
- From: Kevin Williams <Kevin dot Williams at ultraprise dot com>
- Date: Mon, 8 May 2000 12:01:27 -0400
- Reply-To: xsl-list at mulberrytech dot com
I posted something very similar about a month ago to XML-L - it was my
last-ditch attempt to get around the (disturbing) lack of the preceding::
axis in MSXML3:
<xsl:for-each select="//favouritebook">
<xsl:variable name="thisTitle" select="@title"/>
<xsl:if test="generate-id(@title)=generate-id(//@title[.=$thisTitle])">
...
</xsl:if>
</xsl:for-each>
Using xsl:key is more elegant (and almost certainly faster) than using a
variable and xsl:if, as I did; however, since generate-id returns the
generated identifier for the first node in a node-set passed to it, the call
can be simplified somewhat:
<xsl:for-each
select="//tracker-id[generate-id(.)=generate-id(key('tid',.))]">
- Kevin
Kevin Williams
XML Architect
Ultraprise Corporation
> -----Original Message-----
> From: Kay Michael [mailto:Michael.Kay@icl.com]
> This is the traditional solution; Steve Muench has just told
> me about a
> brilliant alternative using keys:
>
> <xsl:key name="tid" use="tracker-id" select="."/>
>
> <xsl:for-each
> select="//tracker-id[generate-id(.)=generate-id(key('tid',.)[1])]">
>
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