RE: [xsl] Error xsl:param may not be used here

["Andrew Welch" <awelch@xxxxxxxxxxxxxxx>]

> The problem is that your <xsl:param> is wrongly 
> placed.<xsl:param> is a top 
> level element ie, child of <xsl:stylesheet> element or if it is in a 
> template then it must be the immediate child of the 
> <xsl:template> element. 
> so in your case, because you have an <xsl:variable> element 
> before the 
> <xsl:param> element, its reporting the error message.

Thats interesting - saxon 6.5.2 allows this (as stated msxml doesnt).

The specs says:

11.5 "As well as being allowed at the top-level, both xsl:variable and
xsl:param are also allowed in templates. xsl:variable is allowed
anywhere within a template that an instruction is allowed. In this case,
the binding is visible for all following siblings and their descendants.
Note that the binding is not visible for the xsl:variable element
itself. xsl:param is allowed as a child at the beginning of an
xsl:template element. In this context, the binding is visible for all
following siblings and their descendants. Note that the binding is not
visible for the xsl:param element itself."

Has this followed through into xslt 2.0 as its not mentioned in the
draft?

cheers
andrew

> -----Original Message-----
> From: Vasu Chakkera [mailto:vasucv@xxxxxxxxxxx]
> Sent: 14 October 2002 10:08
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: Re: [xsl] Error xsl:param may not be used here
> 
> 
> Ryan,
> The problem is that your <xsl:param> is wrongly 
> placed.<xsl:param> is a top 
> level element ie, child of <xsl:stylesheet> element or if it is in a 
> template then it must be the immediate child of the 
> <xsl:template> element. 
> so in your case, because you have an <xsl:variable> element 
> before the 
> <xsl:param> element, its reporting the error message.
> 
> 
> >From: "Ryan Beesley" <RBeesley@xxxxxxxxxxxx>
> >Reply-To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> >To: <XSL-List@xxxxxxxxxxxxxxxxxxxxxx>
> >Subject: [xsl] Error xsl:param may not be used here
> >Date: Mon, 14 Oct 2002 03:46:46 -0500
> >
> >Repost:  Sorry, I posted the first message as a reply...
> >
> >I know that this error has been addressed on this list 
> before, but I don't
> >think it has been answered in this context.
> >
> >I have been working on a set of svg graphing (xslt) 
> utilities that I'd like
> >to make publicly available once my senior design project is 
> complete, but
> >I've run into a slight snag.  I wanted to be able to 
> customize different
> >parameters in multiple ways.  Below is listed a small 
> segment of my xml and
> >xslt.
> >
> >---- graph.xml ----
> ><?xml version="1.0" encoding="UTF-8"?>
> ><graph type="pie">
> >  <!-- Graph data goes here -->
> ></graph>
> >
> >---- graph.xslt ----
> ><?xml version="1.0" encoding="UTF-8"?>
> ><xsl:stylesheet version="1.0"
> >xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
> >  <xsl:output method="xml" version="1.0" encoding="UTF-8" 
> indent="yes"/>
> >
> >  <xsl:template match="graph">
> >   <xsl:call-template name="drawGraph">
> >    <!-- Optional parameters to alter graph -->
> >    <xsl:with-param name="type" select="'bar'"/>
> >   </xsl:call-template>
> >  </xsl:template>
> >
> >  <xsl:template name="drawGraph">
> >   <xsl:variable name="graph" select="." />
> >   <xsl:param name="type">
> >    <xsl:choose>
> >     <xsl:when test="not(string-length($graph/@type) = 0)">
> >      <xsl:value-of select="$graph/@type" />
> >     </xsl:when>
> >     <xsl:otherwise>x-y</xsl:otherwise>
> >    </xsl:choose>
> >   </xsl:param>
> >   <type>
> >    <xsl:value-of select="$type"/>
> >   </type>
> >  </xsl:template>
> >
> ></xsl:stylesheet>
> >
> >---- output.xml ----
> ><?xml version="1.0" encoding="UTF-8"?>
> ><type>bar</type>
> >
> >Although you would probably never include a parameter in 
> both the calling
> >template and the xml data, I have included both to 
> demonstrate the use.  
> >The
> >passed template param should win however.  When evaluating 
> this with XML
> >Spy, in debug mode, it works exactly as I want it too.  I 
> can change the
> >value of @type either while calling the template, or 
> directly from the xml
> >data.  If neither parameter was provided, the template 
> assumes a default.
> >
> >Xalan and MSXML fail completely.  If I place my params 
> inside the choose,
> >then they aren't recognized, as should be, but it doesn't 
> seem to like my
> >nested choose for the param either.  I suspect that this 
> structure is the
> >source of my error: xsl:param may not be used here.
> >
> >If anyone has suggestions as to how I can make this work, 
> I'm always eager
> >to learn.  I believe I could use a variable to make this 
> work, but then I
> >wouldn't be able to change it from the template, right?
> >
> >Ryan Beesley
> >Rbeesley@xxxxxxxxxxxx
> >Founder, Atum Innovations
> >
> >
> >
> >  XSL-List info and archive:  
http://www.mulberrytech.com/xsl/xsl-list




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