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generalisation of template

Subject: generalisation of template
From: "Andrew Welch" <awelch@xxxxxxxxxxxxxxx>
Date: Thu, 17 Jan 2002 10:32:32 -0000
templates generalisation
Hi all,

I think Ive already asked this one but it didnt get any takers... maybe this
time :)

I have this template (c/o Ken) that traverses some nested XML and calls
row_even or row_odd.  The problem is that it uses the actual element names
(qnames, right?) to recursively make its way through the tree.  This is fine
but a neater (and more future proof) solution would be a general template
that could be applied to all 'nesting depths'.  So, can this be done without
using 'mplx' and using something like 'child[position()=last()][child has
child nodes(!)]' ??  Can you even call templates in this way?

The template looks like:

<xsl:template match="mpl0|mpl1|mpl2|mpl3|mpl4">
<xsl:param name="last" select="0"/>
   <xsl:when test="( $last + position() ) mod 2 = 1">
     <xsl:call-template name="row_even"/>
     <xsl:call-template name="row_odd"/>
<xsl:apply-templates select="mpl1|mpl2|mpl3|mpl4">
   <xsl:with-param name="last" select="$last + last()"/>

And the data structure looks like:
(Basically, the next level of nesting is always the last element of the last
node of the previous level)

  <n>Level 0</n>
  <n>Level 0</n>
    <n>Level 1</n>
    <n>Level 1</n>
    <n>Level 1</n>
    <n>Level 1</n>
      <n>Level 2</n>
      <n>Level 2</n>
        <n>Level 3</n>

Output should be something like:

Level 0
>Level 0
.Level 1
.Level 1
.Level 1
>.Level 1
..Level 2
>..Level 2
...Level 3

Also :) If the solution could include outputting a '>' or similar at the
first element of each level (like a directory + or - ) that has child nodes
(that have child nodes) then I would be extremely greatful




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