Re: [xsl] xsl:perform-sort sequence problem

["Andrew Welch" <andrew.j.welch@xxxxxxxxx>]

On 22/10/2007, Merico Raffaele <raffaele.merico@xxxxxxx> wrote:
> Dear Community
>
> I am using SaxonB 8.9 and I have the following xsl:perform-sort/sequence
> problem.
>
> <xsl:variable name="data">
>         <item id="1">
>                 <departure date="2007-10-22">
>                         <returning date="2007-10-23"/>
>                         <returning date="2007-10-24"/>
>                 </departure>
>         </item>
>         <item id="2">
>                 <departure date="2007-10-22">
>                         <returning date="2007-10-22"/>
>                         <returning date="2007-10-24"/>
>                 </departure>
>         </item>
> </xsl:variable>
>
> *** OK-Case:
> When I run the following statements I get an expected result of:
>
> <xsl:variable name="result"
> select="distinct-values($data/item/departure[@date eq
> '2007-10-22']/returning/@date)"/> <xsl:value-of select="count($result)"/>
> <xsl:value-of select="$result" separator=", "/>
>
> => 3
> => 2007-10-23,2007-10-24,2007-10-22
>
>
> *** ??-Case:
> When I try to sort the same sequence the distinct-values become one single
> string:
>
> <xsl:variable name="result">
>         <xsl:perform-sort select="distinct-values($data/item/departure[@date
> eq '2007-10-22']/returning/@date)">
>                 <xsl:sort/>
>         </xsl:perform-sort>
> </xsl:variable>
> <xsl:value-of select="count($result)"/>
> <xsl:value-of select="$result" separator=", "/>
>
> => 1
> => 2007-10-22 2007-10-23 2007-10-24
>
> Can any body please helping me to clarify my misunderstanding of the
> xsl:perform-sort.


In the second case $result is a root node, whereas you want it to be
the sequence of items returned from xsl:perform-sort, so you just need
to type the variable correctly:

<xsl:variable name="result" as="xs:date+">
       <xsl:perform-sort select.....

(note the "as" attribute)

cheers
-- 
Andrew Welch
http://andrewjwelch.com
Kernow: http://kernowforsaxon.sf.net/