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So would I, and this is what I initially sketched. But then I recognized
the desired ultimate output of the form:
<dl>A</dl> <dd>1</dd> <dl>A</dl> <dd>2</dd> <dl>B</dl> <dd>3</dd> -> 1,2|3 So grouping by dl values was the essential part of the task, and the pre-grouping may be skipped in favour of following-sibling::*[1]/self::dd. Pre-grouping the dls with their corresponding dds, if necessary, may either performed by group-starting-with dl or by group-adjacent dd. I don't have a preference here, but maybe I should have mentioned both ways (which I'll do below). Here's a modified sample input with multiple dds: <dl> <dt>AAA</dt> <dd>111</dd> <dt>BBB</dt> <dd>222</dd> <dt>BBB</dt> <dd>333</dd> <dt>BBB</dt> <dd>444</dd> <dd>888</dd> <dd>999</dd> <dt>CCC</dt> <dd>555</dd> <dt>CCC</dt> <dd>666</dd> <dd>777</dd> </dl> Here's the template with the group-starting-with pre-pass: <xsl:template match="dl"> <xsl:variable name="group-sw" as="element(dl)"> <xsl:copy> <xsl:for-each-group select="*" group-starting-with="dt"> <xsl:copy-of select="." /><!-- first group item --> <dd> <xsl:sequence select="string-join(current-group() except ., ',')" /> </dd> </xsl:for-each-group> </xsl:copy> </xsl:variable> <xsl:message> <xsl:copy-of select="$group-sw"/> </xsl:message> <xsl:variable name="dds" as="xs:string+"> <xsl:for-each-group select="$group-sw/dt" group-by="."> <xsl:sequence select="string-join( for $dt in current-group() return $dt/following-sibling::*[1]/self::dd, ',' )"> </xsl:sequence> </xsl:for-each-group> </xsl:variable> <xsl:sequence select="string-join($dds, '|')" /> </xsl:template> => 111|222,333,444,888,999|555,666,777 Here's the (more verbose) group-adjacent approach: <xsl:template match="dl">
<xsl:variable name="group-dds" as="element(dl)">
<xsl:copy>
<xsl:for-each-group select="*" group-adjacent="boolean(self::dd)">
<xsl:choose>
<xsl:when test="current-grouping-key()">
<dd>
<xsl:sequence select="string-join(current-group(), ',')" />
</dd>
</xsl:when>
<xsl:otherwise>
<xsl:sequence select="current-group()" />
</xsl:otherwise>
</xsl:choose>
</xsl:for-each-group>
</xsl:copy>
</xsl:variable>
<xsl:message>
<xsl:copy-of select="$group-dds"/>
</xsl:message>
<xsl:variable name="dds" as="xs:string+">
<xsl:for-each-group select="$group-dds/dt" group-by=".">
<xsl:sequence
select="string-join(
for $dt in current-group()
return $dt/following-sibling::*[1]/self::dd,
','
)">
</xsl:sequence>
</xsl:for-each-group>
</xsl:variable>
<xsl:sequence select="string-join($dds, '|')" />
</xsl:template>=> 111|222,333,444,888,999|555,666,777 Maybe there are also approaches with less passes? ------ Evan should consider what happens to column order when a BBB dt comes before the first AAA dt => maybe use xsl:sort if applicable to the actual scenario. -Gerrit On 26.08.2010 01:13, Michael Kay wrote:
Registergericht / Commercial Register: Amtsgericht Leipzig Registernummer / Registration Number: HRB 24930 GeschC$ftsfC<hrer: Gerrit Imsieke, Svea Jelonek, Thomas Schmidt, Dr. Reinhard VC6ckler
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