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RE: [xsl] Forcing a namespace declaration


Subject: RE: [xsl] Forcing a namespace declaration
From: "tom tom" <tomxsllist@xxxxxxxxxxx>
Date: Tue, 01 May 2007 15:27:49 +0100

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

Some of our existing partners process our feeds using applications that do not understand XML or XML namespaces. Hence to switch the http://purl.org/rss/1.0/ declaration from <rdf:RDF> to <channel> may cause their processing to fail. I realise this is silly but it is how things are so we are being pragmatic.


Your xsl:namespace solution seems to work fine, thankyou.


David Carlisle wrote:
the xmlns would appear on the document element, but you'd also get
xmlns:rssl, but that (probably?) does not matter?

Yes that does matter (see above)


Alternatively you can not declare the rssl prefix and instead make that
the xpath default namespace and use a prefix for your test namespace, and prefix teh match on n

This stylesheet is part of a much bigger group of stylesheets. In every other stylesheet the test namespace is the default. We felt that changing things just for 1 stylesheet would confuse developers and we felt we shouldn't be forced to write our XSLT in a particular way just so the namespace declaration comes out in the positions we want them.



Andrew Welch wrote:
Remove the rss1 namespace definition (as its defined as the default namespace) and then remove the redundant exclude result prefixes and it will work

I need the rss1 namespace declaration as I need to process an external document that belongs to this namespace in the same stylesheet.




From: "Michael Kay" <mike@xxxxxxxxxxxx>
Reply-To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
To: <xsl-list@xxxxxxxxxxxxxxxxxxxxxx>
Subject: RE: [xsl] Forcing a namespace declaration
Date: Tue, 1 May 2007 14:58:06 +0100

> 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@xxxxxxxxxxx] > Sent: 01 May 2007 14:37 > To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx > 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 > > _________________________________________________________________ > Get Hotmail, News, Sport and Entertainment from MSN on your mobile. > http://www.msn.txt4content.com/


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