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RE: [xsl] Forcing a namespace declaration

2007-05-01 06:58:33
The problem is I need the http://purl.org/rss/1.0/ xmlns 
declaration to appear on the root element instead of on the 
channel element.

It would be nice if you explained why, since it seems a very strange
requirement.

When you do

exclude-result-prefixes="rss1"

you are asking for the namespace that rss1 refers to not to be copied to the
result tree. That's why it isn't being copied. This declaration applies at
the namespace URI level, that is, it affects all namespace bindings for this
namespace URI. 

Can anyone propose a better solution to this problem than the 
one I have come up with?

Try  

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";>
  <xsl:namespace name="">http://purl.org/rss/1.0/</xsl:namespace>
  <channel xmlns="http://purl.org/rss/1.0/";>...</channel>
</rdf:RDF>

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

-----Original Message-----
From: tom tom [mailto:tomxsllist(_at_)hotmail(_dot_)com] 
Sent: 01 May 2007 14:37
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] Forcing a namespace declaration

Hi all,

The following XML:

<?xml version="1.0" encoding="UTF-8"?>
<n xmlns="http://www.test.com"; 
xmlns:xhtml="http://www.w3.org/1999/xhtml"/>

uses the following XSLT:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="2.0" xmlns="http://purl.org/rss/1.0/"; 
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"; 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"; 
xmlns:dc="http://purl.org/dc/elements/1.1/"; 
xmlns:rss1="http://purl.org/rss/1.0/"; exclude-result-prefixes="rss1" 
xpath-default-namespace="http://www.test.com";>

      <xsl:output indent="yes" method="xml"/>

      <xsl:template match="n" >
              <rdf:RDF xmlns="http://purl.org/rss/1.0/"; 
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"; >
                      <channel>fffffff</channel>
              </rdf:RDF>
      </xsl:template>

</xsl:stylesheet>

to generate the following XML:

<?xml version="1.0" encoding="UTF-8"?>
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";
         xmlns:dc="http://purl.org/dc/elements/1.1/";>
   <channel xmlns="http://purl.org/rss/1.0/";>fffffff</channel>
</rdf:RDF>

I'm using XSLT 2 in Saxon 8.

The problem is I need the http://purl.org/rss/1.0/ xmlns 
declaration to appear on the root element instead of on the 
channel element.

I believe it is appearing where it is due to the 
xmlns:rss1="http://purl.org/rss/1.0/"; declaration, as when I 
remove this it works in the way I want it to. The 
xmlns:rss1="http://purl.org/rss/1.0/"; 
declaration is needed on the root element as elsewhere in the 
stylesheet I need to process an external document with 
elements belonging to this namespace.

The only way I can see to fix this is to have 
xpath-default-namespace attributes scattered at appropriate 
points in the stylesheet. As the templates do not separate 
easily into sections determined by which XML document they 
are working on i believe this will lead to code that is 
difficult to read.

Can anyone explain why http://purl.org/rss/1.0/ is being 
declared on channel instead of the root element?

Can anyone propose a better solution to this problem than the 
one I have come up with?

Thanks

Tom

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