Re: [xsl] Passing document fragments as nodsets

[Jeni Tennison <jeni@xxxxxxxxxxxxxxxx>]

Hi Simon,

> This is the test that fails every time, but I know the node set
> contains one node. Is the test correct for erroring if the set is
> null?
>
> <xsl:if test="not($text-nodes)">
>     <xsl:message terminate="yes">
>         Template footer-text-rows was called without
>         a value passed in text-nodes. Check the code!
>     </xsl:message>
> </xsl:if>

That's the correct test for seeing if $text-nodes is empty or not; you
should get the error message if $text-nodes is empty.

When footer-text-rows is called with:

>       <xsl:if test="$text-node-count &gt; 0">
>         <xsl:call-template name="footer-text-rows">
>           <xsl:with-param name="node-set" select="$text-nodes" />
>         </xsl:call-template>
>       </xsl:if>

then $text-nodes will always be empty, since you're only passing in a
value for the $node-set parameter and the $text-nodes parameter
defaults to the empty node set.

When you call it in:

>   <!-- Center footer section: table generating template -->
>   <xsl:template name="footer-center">
>     <xsl:param name="text-nodes" select="/.." />
> 
>     <table>
>       <xsl:call-template name="footer-text-rows">
>         <xsl:with-param name="text-nodes" select="$text-nodes" />
>       </xsl:call-template>
>     </table>
>   </xsl:template>

then the value of $text-nodes depends on the value of $text-nodes in
the footer-center template, which depends on what:

>           <xsl:call-template name="footer-center">
>             <xsl:with-param name="text-nodes">
>               <xsl:value-of select="xalan:nodeset(.)/text[@position =
> 'center']" />
>             </xsl:with-param>
>           </xsl:call-template>

is doing; since I don't have the source document I can't tell whether
$text-nodes will actually hold anything here.

By the way, I doubt that your "counter" template is doing what you
want it to do, since the test:

  $node-set[$count] = last()

is true if the string value of the node in $node-set at the position
of $count is equal to the number of nodes currently being processed,
which is probably always going to be 1, assuming that your XML
document looks like:

<?xml version="1.0"?>
<footer>
  ...
</footer>

If you want to count how many nodes are in a node set, you should use
the count() function:

  count($node-set)

Cheers,

Jeni

---
Jeni Tennison
http://www.jenitennison.com/


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