Re: [xsl] Global namespace prefixes (Corrected Examples)

[Nathan Potter <ndp@xxxxxxxxxxxxxxxxxxxx>]

I wored out the XSLT Extension stuff, so Now my test transform looks  
like this:

<xsl:stylesheet version="1.0"
      xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
      xmlns:xalan="http://xml.apache.org/xalan";
      xmlns:exslt="http://exslt.org/common";
      xmlns:dap="http://xml.opendap.org/ns/DAP/3.2#";
      xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";
      >
   <xsl:output method='xml' version='1.0' encoding='UTF-8'  
indent='yes'/>

    <xsl:variable name="dummy">
        <xsl:element name="att:dummy" namespace="{/dap:Dataset/@base}/ 
att#"/>
    </xsl:variable>


   <xsl:template match="dap:Dataset" >
        <rdf:RDF>
            <xsl:copy-of select="exslt:node-set($dummy)// 
namespace::*"/>
            <xsl:apply-templates />
        </rdf:RDF>

   </xsl:template>

   <xsl:template match="dap:Attribute" >
       <xsl:element name="{@name}" namespace="{/dap:Dataset/@base}/ 
att#"><xsl:value-of select="." /></xsl:element>
   </xsl:template>


</xsl:stylesheet>



And I get this error:


ERROR:  'com.sun.org.apache.xalan.internal.xsltc.TransletException:  
org.jdom.IllegalAddException: The namespace xmlns="http://base.document/att# 
" could not be added as a namespace to "rdf:RDF": The namespace prefix  
"" collides with an additional namespace declared by the element'
org.jdom.transform.XSLTransformException: Could not perform  
transformation:  
com.sun.org.apache.xalan.internal.xsltc.TransletException:  
com.sun.org.apache.xalan.internal.xsltc.TransletException:  
org.jdom.IllegalAddException: The namespace xmlns="http://base.document/att# 
" could not be added as a namespace to "rdf:RDF": The namespace prefix  
"" collides with an additional namespace declared by the element


Which seemed odd until I dump out my dummy element:

    <xsl:copy-of select="$dummy"/>

Which produces:

    <dummy xmlns="http://base.document/att#"; />



So despite the fact that I assigned a namespace prefix when I created  
$dummy, the XSLT processor appears to ignore it.



Nathan


On Nov 13, 2008, at 5:25 PM, Nathan Potter wrote:
> I don't understand how to do this thing with node-set. When I try  
> this:
>
>
>    <xsl:variable name="dummy">
>        <xsl:element name="att:dummy" namespace="{/dap:Dataset/@base}/ 
> att#"/>
>    </xsl:variable>
>
>
>   <xsl:template match="dap:Dataset" >
>        <rdf:RDF>
>            <xsl:copy-of select="exslt:node-set($dummy)// 
> namespace::*"/>
>            <xsl:apply-templates />
>        </rdf:RDF>
>   </xsl:template>
>
> I get a "Namespace prefix 'exslt' is undeclared." error when I  
> compile the stylesheet. Which isn't surprising, since it is missing  
> and I suspect the crux of this trick is in setting the prefix  
> correctly.

============================================================
Nathan Potter                 Oregon State University, COAS
ndp at coas.oregonstate.edu   104 Ocean. Admin. Bldg.
541 737 2293 voice            Corvallis, OR   97331-5503
541 737 2064 fax