Re: [xsl] XML overlap - processing a node-set defined by <start/> and <e

James Fuller wrote:
> u might want to take a look at lmnl
>
> http://www.lmnl.net/
Thanks James, but I have to stick on XML, lmnl seems to have it's own 
none-XML syntax.
Meanwhile I found a paper about CLIX [1], which had worked out the 
start/end scenarios in more detail beyond the chapter 'Range ordering 
with and without co-located endpoints'.
Until I found out more about the later mentioned validator build on 
Saxon, my XSLT related question is this:
Is the best (performant) way to work on the selection the following?

<xsl:variable name="precedingStarts" select="count(preceding::text:start)"/>
<xsl:if test="$precedingStarts != 0">
   <xsl:variable name="followingEnds"   
select="count(following::text:end)"/>
   <xsl:if test="$precedingStarts = $followingEnds">
   <!-- do something -->
   </xsl:if>
</xsl:if>

Is there any possibility to cache this?

I am thankful for any help,
Svante


[1] 
http://www.idealliance.org/papers/extreme/Proceedings/html/2004/DeRose01/EML2004DeRose01.html
> gl, James Fuller
>
> On 2/17/07, Svante Schubert <svante(_dot_)schubert(_at_)gmail(_dot_)com> wrote:
> > Imagine XML data, where continuous selection of data - randomly made by
> > the user - is being marked by using a <start/> and <end/> element.
> >
> > For example:
> >
> > <ex:paragraph>
> >     <ex:START/>
> >     <ex:span>
> >         Some text C..
> >     <ex:span>
> > </ex:paragraph>
> > <ex:paragraph>
> >     Some text D..
> >     <ex:END/>
> >     <ex:span>
> >         Some text F..
> >     <ex:span>
> > </ex:paragraph>
> >
> >
> > The desired nodes would be
> >     <ex:span>
> >         Some text C..
> >     <ex:span>
> >     Some text D..
> >
> > Is there an easy way to process this kind of selection with XSLT?
> >
> > Best regards,
> > Svante
> >
> >
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