RE: [xsl] storing the result of a transformation in a param and evaluating the content

[Jean-François Lavigne <jf_lavigne@xxxxxxxxxxxx>]

String-length only works if $content is a text node, on a result tree
fragment, it returns false every time.

I need something that evaluates to true when a result tree fragment is
present in the variable.

I found that I can use an extension function like so:

<xsl:param name="nodeSet" select="exsl:node-set($content)"/>
<xsl:value-of select="boolean($nodeSet/*)"/>

This converts $content to a node set that can be navigated with XPath but it
uses an extension.  Is there a standard way to do it?  I can't find one and
I'm running out of manuals...

J-F

-----Original Message-----
From: Tiffany Blake [mailto:Tiffany_Blake@xxxxxxx]
Sent: November 22, 2004 10:07 PM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: RE: [xsl] storing the result of a transformation in a param and
evaluating the content

try <xsl:if test="string-length(content)&gt;0">

best,
Tiffany_Blake@xxxxxxx

-----Original Message-----
From: Jean-Frangois Lavigne [mailto:jf_lavigne@xxxxxxxxxxxx]
Sent: Monday, November 22, 2004 6:52 PM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: [xsl] storing the result of a transformation in a param and
evaluating the content


Hello all,

If I store the result of a transformation into a variable, is there a way to
check this variable to see if it contains an element or nothing?

For example:

<xsl:template name="item">
  <xsl:param name="content">
    <xsl:apply-templates/>
  </xsl:param>
  <xsl:copy-of select="$content"/>
</xsl:template>

The copy-of element returns $content which is:

<world>hello</world>

What if the apply-templates element returned nothing and $content is empty.
Is there a way to check for this situation?

Thanks a lot.

J-F