Thanks to those who replied!
Oh well, Muenchian technique and the common way outputs the different result
which seems they both giving unique solutions, but the one that Muenchian has a
shorter list than the other one. But I really want to use Muenchian due to the
large amount of the nodes. Anything wrong with my code? Thanks a lot!!
<?xml version="1.0" encoding="UTF-8"?>
<xsl:transform xmlns:xsl="http://www.w3.org/1999/XSL/Transform"; version="1.1">
<xsl:key name="solution-key" match="metadata" use="solution" />
<xsl:template match="report">
<!-- using Muenchian technique to display a list of unique solutions -->
<xsl:apply-templates select="item">
<xsl:sort select="metadata/solution/."/>
</xsl:apply-templates>
<!-- using common grouping to display a list of unique solutions -->
<xsl:variable name="unique-solutions"
select="item/metadata/solution[not(. = preceding::solution)]"/>
<xsl:for-each select="$unique-solutions">
<xsl:sort select="." />
<xsl:value-of select="."/>
</xsl:for-each>
</xsl:template>
<xsl:template match="item">
<xsl:for-each select="metadata[generate-id(.) =
generate-id(key('solution-key', solution)[1])]">
<xsl:value-of select="solution/."/>
</xsl:for-each>
</xsl:template>
Again, XML file:
<report>
<item>
<content>
....
</content>
<metadata>
<solution>A</solution>
<solution>B</solution>
<solution>C</solution>
</metadata>
</item>
<item>
<content>
.....
</content>
<metadata>
<solution>A</solution>
<solution>B</solution>
<solution>D</solution>
</metadata>
</item>
<item>
<content>
.....
</content>
<metadata>
<solution>B</solution>
<solution>D</solution>
<solution>E</solution>
</metadata>
</report>
-----Original Message-----
From: Lars Huttar [mailto:lars_huttar(_at_)sil(_dot_)org]
Sent: Tuesday, June 17, 2003 10:44 PM
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: RE: [xsl] grouping by unique...
Fei Zheng wrote:
I'd like to have an unique solution list. Anyone can tell what's
> wrong with the following code which gives all solutions instead of
> the unique solutions?
select="item[not(metadata/solution =
preceding-sibling::metadata/solution)]/metadata/solution" />
You are using the preceding-sibling on the wrong element.
Try
select="item/metadata/solution[not(. =
preceding-sibling::solution)]"/>
J.Pietschmann
But this will not give the right results because it only checks
for *siblings* that are the same, whereas Fei Zheng wants to
eliminate duplicates that are second cousins too.
How about
select="item/metadata/solution[not(. = preceding::solution)]"
Or go Muenchian. (Btw how do you pronounce that?)
Lars
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