RE: [xsl] problem passing parameter to apply-templates

["Michael Kay" <mike@xxxxxxxxxxxx>]

I haven't studied your code in detail, but a common pitfall in this area is
the situation where the element hierarchy is A/B/C:

template A does xsl:apply-templates with parameters

there is no template for B, so the built in template gets invoked

the built in template for B invokes the template for C

the template for C sees no parameters


This is because (in XSLT 1.0) built-in templates do not pass their
parameters on.

With multiple documents, this problem often occurs because people do
apply-templates on the root (document) node, but write a template rule to
process the top-level element, so the built-in template for the root node
loses the parameters.

Michael Kay
http://www.saxonica.com/



> -----Original Message-----
> From: Paula Estrella [mailto:paula_ile2003@xxxxxxxxxxxx] 
> Sent: 30 August 2005 23:41
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: [xsl] problem passing parameter to apply-templates 
> 
> Hi all, I'm trying to pass a parameter to a template
> by using apply-templates (as showed in the stylesheet
> below) but I don't get the value of the parameter when
> the template is applied, i.e I should print "blabla"
> but instead I get nothing (a null value or empty
> string?).
> I also read somewhere that this might be a kind of bug
> of the xslt processor; I'm using the Cocoon framework,
> which uses xalan to process xslt (I guess v. 1.0)
> 
> Although I found another (dirty) solution to get what
> I want, I'd really like to know what's the error here
> so I can learn from my mistakes ...
> 
> Thanks in advance,
> Paula
> 
> <!-- short version of the stylesheets -->
> <xsl:template match="page">
>  <xsl:apply-templates select="title"/><br/>
>  <xsl:apply-templates
> select="document('../xml/clasif2.xml')/clasif2">
>  <xsl:with-param name="nodes" select="'blabla'"/> 
>  </xsl:apply-templates>
> </xsl:template>
> 
> <xsl:template match="item">
> <xsl:param name="nodes"/>
> 
> <xsl:value-of select="$nodes"/>
> </xsl:template>
> 
> <!-- xml file to which the above stylesheet is applied
> -->
> <page>
> <title>some title</title>
> <checked>
> <xsp:attribute name="data">
> 102
> </xsp:attribute>
> </checked>
> </page>
> 
> 
> 
> 	
> 
> 	
> 		
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