Re: Sorting a variable that contains a nodeset

> My problem is that I have to compare each 'ARTICULO' with the
> following 'ARTICULO', but once they are sorted. For this, I think
> the best solution is to store in a variable all the nodes
> 'ARTICULO', sort them, and compare each of them with the following.

The only way that you can do this in XSLT 1.0 is if you use a
node-set() extension function to create a new document in which the
ARTICULOs are in sorted order. You create the new document within a
variable:

  <xsl:variable name="articulos">
    <xsl:for-each select="ARTICULO">
      <xsl:sort select="NOMBRE_FAMILIA"/>
      <xsl:sort select="NOMBRE_SUBFAMILIA"/>
      <xsl:sort select="DESCRIPCION_CORTA"/>
      <xsl:copy-of select="." />
    </xsl:for-each>
  </xsl:variable>

Then convert that to a node set with an extension function that
depends on what processor you're using, and check the following
ARTICULO using the following-sibling:: axis. For example, if you're
using MSXML, you do:

  <xsl:for-each select="msxsl:node-set($articulos)/ARTICULO">
    ...
    <xsl:if test="NOMBRE_FAMILIA =
                  following-sibling::NOMBRE_FAMILIA[1]">
      ...
    </xsl:if>
    ...
  </xsl:for-each>

My intuition tells me that you might be wanting to do this because you
want to create groups of ARTICULO elements. If that's the case, then
there are different (and more portable) ways to go about it, so let us
know if that's what you're trying to do.

I´m using in my XSLT the following namespace:
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"

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