Re: [xsl] Conditional in-context nodeset variables

Subject: Re: [xsl] Conditional in-context nodeset variables
From: "Andrew Welch" <andrew.j.welch@xxxxxxxxx>
Date: Thu, 3 Jan 2008 15:56:00 +0000
On 03/01/2008, Vyacheslav Sedov <vyacheslav.sedov@xxxxxxxxx> wrote:
> have problem
> for example (as input any valid XHTML)
> and context is first h1 node
>         <xsl:variable name="level1" select="following-sibling::h1[1]"/>
>         <xsl:variable name="level2" select="following-sibling::h2[1]"/>
>         <xsl:variable name="next-stop">
>             <xsl:choose>
>                 <xsl:when test="not($level1 and $level2)">
>                     <xsl:sequence select="following-sibling::*[last()]"/>
>                 </xsl:when>
>                 <xsl:when test="$level1 &lt;&lt; $level2">
>                     <xsl:sequence select="$level1"/>
>                 </xsl:when>
>                 <xsl:otherwise>
>                     <xsl:sequence select="$level2"/>
>                 </xsl:otherwise>
>             </xsl:choose>
>         </xsl:variable>
> <xsl:apply-templates select="following-sibling::*[. &lt;&lt $next-stop]"/>
> $level1 and $leve2 contain links to live in-context node
> but variable $next-stop contain copy (not reference to node) of level1
> or level2 variable
> and even following-sibling::*[last()] provide just copy instead of
> in-context nodeset
> so << not work as expected :(

Is it just the usual problem of $next-stop being a document-node()? If
so you need:

<xsl:variable name="next-stop" as="element()">

It looks like you are trying to do positional grouping - maybe look at
xsl:for-each-group using group-ending-with.

By the way, if you provide a small complete sample input, with a
complete stylesheet that highlights the problem then it's easy for
people to cut and paste the samples and reproduce your problem.  Not
many will be bothered to mock up an input...

Andrew Welch

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