Re: [xsl] Count() elements in range

["M. David Peterson" <conners_dad@xxxxxxx>]

I realize this is an old thread but I wrote the response when I was rushing 
around trying to get ready for a vacation.  After rereading what I wrote I 
realized I made a rediculous mistake.  To ensure that anybody who reads this 
in the future doesnt get the wrong information what I should have said was 
that parentheses are only used when invoking a function OR when grouping 
your elements.  So a statement like (descendant::element)[1] would still be 
valid of you were looking for the  element node in the first postion that 
was a descendant of the current context node.  This clarification becomes 
more prevalent when using something like preceding::para[1] which returns 
the 1st para element in reverse document order where as (preceding::para)[1] 
returns the first para element in regular document order.

Sorry for any confusion I may have caused anyone!!!!! I havent check the 
posting to see if someone caught this and made the correction.  Hopefully 
they did and this is now a mute point.

Best regards,

M.


> From: "M. David Peterson" <conners_dad@xxxxxxx>
> Reply-To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> To: <xsl-list@xxxxxxxxxxxxxxxxxxxxxx>
> Subject: Re: [xsl] Count() elements in range
> Date: Wed, 15 Oct 2003 21:05:10 -0600
>
> Chris,
>
> At first glance I noticed you have following-sibling wrapped in 
> parentheses.
> The only time you will use parentheses is when you are invoking a function.
> In this case you are just searching for a particular node using a standard
> XPath expression.
>
> So, this...
>
> <xsl:when test="(following-sibling::element[1][child::flag]) or
> > (count(following-sibling::element) = 0)">
>
> should read like this...
>
> <xsl:when test="following-sibling::element[1][child::flag] |
> count(following-sibling::element) = 0)">
>
> Im rushing out the door and don't have time to look to see what other 
> issues
> you might have or what solutions would work best but if I get back and this
> hasn't helped or someone else hasn't been able to help I will take another
> look at it.
>
> Best regards,
>
> M.
>
>
> ----- Original Message -----
> From: <Chris.Pearson@xxxxxxxxxxxx>
> To: <XSL-List@xxxxxxxxxxxxxxxxxxxxxx>
> Sent: Wednesday, October 15, 2003 6:33 PM
> Subject: [xsl] Count() elements in range
>
>
> > I am wrestling with a problem related to counting a specific range of
> > elements in a source document. I've tried searching the archives, but I
> > was
> > unable to locate any past discussions that appeared relevant.
> >
> >
> > Problem: count the number of <element> nodes in the tree starting from 
> the
> > last <element> or the last <element> whose following-sibling::element 
> does
> > not have a child <flag>. I think my issue is simply a matter of XPath
> > expressions, but my brain keeps trying differing versions of recursion
> > with
> > no luck.
> >
> >
> > Source xml:
> > <?xml version="1.0" encoding="UTF-8" ?>
> > <root>
> > <!--start A series of 1 -->
> > <element number="A1">
> > <flag/>
> > </element>
> > <!-- start B series of 4 -->
> > <element number="B1">
> > <flag/>
> > </element>
> > <element  number="B2"/>
> > <element  number="B3"/>
> > <element  number="B4"/>
> > <!-- start C series of 2 -->
> > <element  number="C1">
> > <flag/>
> > </element>
> > <element  number="C2"/>
> > <!-- start D series of 3 -->
> > <element  number="D1">
> > <flag/>
> > </element>
> > <element  number="D2" />
> > <element  number="D3" />
> > </root>
> >
> >
> > Stylesheet so far:
> > <?xml version="1.0" encoding="UTF-8"?>
> > <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
> >   version="1.0">
> > <xsl:output method="text" media-type="text/plain"/>
> > <xsl:strip-space elements="*" />
> >
> > <xsl:template match="/root/element">
> >   <xsl:choose>
> >     <xsl:when test="(following-sibling::element[1][child::flag]) or
> > (count(following-sibling::element) = 0)">
> >       <xsl:call-template name="countFlags">
> >         <xsl:with-param name="nodeList"
> > select="preceding-sibling::element"
> > />
> >       </xsl:call-template>
> >     </xsl:when>
> >     <xsl:otherwise />
> >   </xsl:choose>
> > </xsl:template>
> >
> > <xsl:template name="countFlags">
> >   <xsl:param name="nodeList"/>
> > <!-- do something here to count the preceding-sibling::element nodes up 
> to
> > the first <element> whose following-sibling::element does not have a
> > <flag>
> > child. -->
> > </xsl:template>
> > </xsl:stylesheet>
> >
> >
> > Thanks in advance,
> >
> >
> > Chris
> >
> >
> >
> >  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list
> >
> >
>
>  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list

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