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Re: [xsl] Conditional in-context nodeset variables

2008-01-03 08:56:36
On 03/01/2008, Vyacheslav Sedov <vyacheslav(_dot_)sedov(_at_)gmail(_dot_)com> 
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...

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

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