Re: grouping, sorting and selection by language(s)

Wendell,

Here's the XML file

<?xml version="1.0" encoding="ISO-8859-1"?>
<articles>
<article lang="fr"><category>Catigorie 1</category>
<source>Publication in French</source><date
pubdate="20050124">24/01/2004</date><art_title>Title
of the first article in
French</art_title><firstpara>First
paragraph</firstpara><link>http://www.anyurl.com/...</link>
</article>
<article lang="en"><category>Category 3</category>
<source>English-language publication</source>
<date pubdate="20041221">21/12/2004</date>
<art_title>Title of the first article in
English</art_title><firstpara>First
paragraph</firstpara><link>http://www.anyurl.com/..</link>
</article>
<article lang="de"><category>Kategorie 1</category>
<source>German-language publication</source><date
pubdate="20040724">24/07/2004</date><art_title>Title
of the first article in
German</art_title><firstpara>First
paragraph</firstpara><link>http://www.anyurl.com/..</link>
</article>
<article lang="fr"><category>Catigorie 2</category>
<source>Publication in French</source><date
pubdate="20040302">02/03/2004</date><art_title>Title
of the second article in
French</art_title><firstpara>First
paragraph</firstpara><link>http://www.anyurl.com/..</link>
</article>
<article lang="nl"><category>Categorie 1</category>
<source>Dutch-language publication</source><date
pubdate="20041119">19/11/2004</date><art_title>Title
of the first article in
Dutch</art_title><firstpara>First
paragraph</firstpara><link>http://www.anyurl.com/..</link>
</article>
<article lang="de"><category>Kategorie 3</category>
<source>German-language publication</source><date
pubdate="20031224">24/12/2003</date><art_title>Title
of the second article in
German</art_title><firstpara>First
paragraph</firstpara><link>http://www.anyurl.com/..</link>
</article>
<article lang="nl"><category>Categorie 2</category>
<source>Dutch-language publication</source><date
pubdate="20040919">19/09/2004</date><art_title>Title
of the second article in
Dutch</art_title><firstpara>First
paragraph</firstpara><link>http://www.anyurl.com/..</link>
</article>
<article lang="en"><category>Category
1</category><source>English-language
publication</source><date
pubdate="20040621">21/06/2004</date><art_title>Title
of the second article in
English</art_title><firstpara>First
paragraph</firstpara><link>http://www.anyurl.com/..</link>
</article>
<article lang="de"><category>Kategorie 3</category>
<source>German-language publication</source><date
pubdate="20041029">29/10/2004</date><art_title>Title
of the third article in
German</art_title><firstpara>First
paragraph</firstpara><link>http://www.anyurl.com/..</link>
</article>
<article lang="fr"><category>Catigorie 4</category>
<source>Publication in French</source><date
pubdate="20030320">20/03/2003</date><art_title>Title
of the third article in
French</art_title><firstpara>First
paragraph</firstpara><link>http://www.anyurl.com/..</link>
</article>
<article lang="en"><category>Category 2</category>
<source>English-language publication</source><date
pubdate="20030512">12/05/2003</date><art_title>Title
of the third article in
English</art_title><firstpara>First
paragraph</firstpara><link>http://www.anyurl.com/..</link>
</article>
<article lang="nl"><category>Categorie 3</category>
<source>Dutch-language publication</source><date
pubdate="20031017">17/10/2003</date><art_title>Title
of the third article in
Dutch</art_title><firstpara>First
paragraph</firstpara><link>http://www.anyurl.com/..</link>
</article>
</articles>

The XSL:
<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method ="html" encoding="ISO-8859-1" />
<xsl:key name ="articles-by-category" match ="article"
use ="category" />
<xsl:template match="articles">
<h2>Articles en frangais</h2>
<xsl:for-each select ="article[@lang='fr' and
count(.|key('articles-by-category', category)[1])=1]">
<xsl:sort select="category" />
<h3><xsl:value-of select="category" /></h3><br/>
<xsl:for-each select="key('articles-by-category',
category)">
<xsl:sort select="date/@pubdate" order="descending"/>
<xsl:if test="position() &lt;3">
<i><xsl:value-of select="source"/> - <xsl:value-of
select="date" /></i><br/>
<h4><xsl:value-of select="art_title"/></h4><br/>
<xsl:value-of select="firstpara"/> ..
<a><xsl:attribute name="href">
<xsl:value-of select="link"/>
</xsl:attribute>lire l'article</a><br/><br/>
</xsl:if>
</xsl:for-each>
</xsl:for-each>
<h2>Artikeln in deutscher Sprache</h2>
<xsl:for-each select ="article[@lang='de' and
count(.|key('articles-by-category', category)[1])=1]">
<xsl:sort select="category" />
<h3><xsl:value-of select="category" /></h3><br/>
<xsl:for-each select="key('articles-by-category',
category)">
<xsl:sort select="date/@pubdate" order="descending"/>
<xsl:if test="position() &lt;3">
<i><xsl:value-of select="source"/> - <xsl:value-of
select="date" /></i><br/>
<h4><xsl:value-of select="art_title"/></h4><br/>
<xsl:value-of select="firstpara"/> ..
<a><xsl:attribute name="href">
<xsl:value-of select="link"/>
</xsl:attribute>Zum kompletten Artikel</a><br/><br/>
</xsl:if>
</xsl:for-each>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>

Hope it's not truncated this time. Would appreciate
ideas to make xslt shorter or server-friendlier

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