Re: [xsl] mod position() tests positive all of the time

Hi Allen,

I had some additional thoughts, see below

Abel Braaksma wrote:

Why did you choose to use call-template? Using apply-template andtemplate matches is likely much easier.
<xsl:template name="results">
<table>
<xsl:for-each
select="insightResponse/searchResponse/collectionResultSet/object/thumbnail[position()
mod 5 = 1]">
What this does highly depends on your input. For instance, if you havea set of "object" nodes, and each has one "thumbnail" node, then thisfor-each will select all of them (as postion() is always for eachfirst thumbnail node under object). Depending on your input, you maywant to write this a little different for readability, but as far as Ican tell, this code is not wrong per se.

Because it looks as if you want to output several thumbnails of pictureswhere you specify the row-size and you use XSLT for the logic, here's isa generalized example of what you can use by using templates (instead offor-each). Note the use of modes, it makes it easier to apply a templatemultiple times to an input node, without getting into infinite recursion.


Input file:
<input>
   <thumbnail url="http://someurl/bla1.gif"; />
   <thumbnail url="http://someurl/bla2.gif"; />
   <thumbnail url="http://someurl/bla3.gif"; />
   <thumbnail url="http://someurl/bla4.gif"; />
   <thumbnail url="http://someurl/bla5.gif"; />
   <thumbnail url="http://someurl/bla6.gif"; />
   <thumbnail url="http://someurl/bla7.gif"; />
   <thumbnail url="http://someurl/bla8.gif"; />
   <thumbnail url="http://someurl/bla9.gif"; />
   <thumbnail url="http://someurl/bla10.gif"; />
   <thumbnail url="http://someurl/bla11.gif"; />
   <thumbnail url="http://someurl/bla12.gif"; />
   <thumbnail url="http://someurl/bla13.gif"; />
   <thumbnail url="http://someurl/bla14.gif"; />
</input>

XSLT file:

<xsl:stylesheet
   version="1.0"
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>

<xsl:output method="xml" encoding="UTF-8" indent="yes"/>


   <xsl:template match="/input">
       <html><body>
           <table>
               <xsl:apply-templates select="thumbnail" />
           </table>
       </body></html>
   </xsl:template>

<xsl:template match="thumbnail[position() mod 5 = 1]">

       <xsl:variable name="pos" select="position()" />
       <tr>
           <xsl:apply-templates
               mode="makethumb"
               select=". |
               following-sibling::thumbnail[position() &lt; 5]"

/></tr>

   </xsl:template>

<xsl:template match="thumbnail" mode="makethumb">

       <td>
           <img src="{(_at_)url}" />
       </td>
   </xsl:template>
</xsl:stylesheet>


Output after transformation:
<html>
  <body>
     <table>
        <tr>
           <td><img src="http://someurl/bla1.gif"/></td>
           <td><img src="http://someurl/bla2.gif"/></td>
           <td><img src="http://someurl/bla3.gif"/></td>
           <td><img src="http://someurl/bla4.gif"/></td>
           <td><img src="http://someurl/bla5.gif"/></td>
        </tr>
        <tr>
           <td><img src="http://someurl/bla6.gif"/></td>*
*            <td><img src="http://someurl/bla7.gif"/></td>
           <td><img src="http://someurl/bla8.gif"/></td>
[.....]
etc.


Cheers,
-- Abel Braaksma
  http://www.nuntia.nl


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