RE: [xsl] how to define a namespace-prefix for null-namespace

["Michael Kay" <mike@xxxxxxxxxxxx>]

In XSLT 2.0 you can define

default-xpath-namespace="some.uri"

which means that an unprefixed name in a path expression refers to names in
the some.uri namespace.

However, it is not possible to bind an explicit namespace prefix to the
"null namespace" (the set of names that are in no namespace). These can only
be referenced using an unprefixed name. A nuisance, but that's the way it
is.

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

 

> -----Original Message-----
> From: Siegfried Baiz [mailto:baiz@xxxxxxxxx] 
> Sent: 23 March 2005 18:12
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: Re: [xsl] how to define a namespace-prefix for null-namespace
> 
> Hallo David,
> 
> tanks for your information about the XML-background.
> 
> Your last sentence also means that in the XSLT-Spec,
> exists no "dummy"-namespace as placeholder for that "no-namespace"
> like in my second trial:
> <xsl:stylesheet version="2.0" ....  xmlns:my="#default">
>    <xsl:template match="my:*">
> ... ?
> 
> 
> Is there any other way to avoid changing
> all the xpath-selection rsp.
> all the match-patterns of
> my stylesheet, when the input-document will be decorated by a 
> namespace.
> 
> for example from
> 
> <xsl:stylesheet version="2.0" ....  >
>    <xsl:template match="root">
>         <xsl:apply-template select="tag1/tag2[tag3]"/>
> ...
> into
> 
> <xsl:stylesheet version="2.0" ....  
> xmlns:my="http://www.my.thenewnamespace";>
>    <xsl:template match="my:root">
>         <xsl:apply-template select="my:tag1/my:tag2[my:tag3]"/>
> ...
> 
> As far as I know it is neither possible to use empty 
> namespace-prefix, like
> <xsl:stylesheet version="2.0" ....  
> xmlns="http://www.my.thenewnamespace";>
>    <xsl:template match="root">
>         <xsl:apply-template select="tag1/tag2[tag3]"/>
> 
> thanks,
> 
> Siggi
> 
> --------------------------------------------------
> Dipl.-Math. (Univ.)
> Siegfried Baiz
> Sulzer GmbH
> Frankfurter Ring 162, D-80807 Muenchen
> Tel.: +49 89 31858-264
> Fax : +49 89 31858-599
> mailto:baiz@xxxxxxxxx
> --------------------------------------------------
> 
> 
> 
> David Carlisle wrote:
> 
> >  In my XSLT-stylesheet I wanted to define a xmlns-prefix for that
> >  null-namespace,
> >
> >The XML Namespaces rec does not allow a prefix to be used with
> >no-namespaace.
> >
> >With XML Namespace 1.0 (which is the version used by almost 
> all systems)
> >xmlns:my=""
> >is a syntax error.
> >With WXML Namespace 1.1 xmlns:my="" is allowed but it does not make
> ><my:foo/> refer to foo in no-namespace it unbinds the prefix 
> my (if it
> >had already been bound) so making <my:foo/> an error.
> >
> >So your requested result isn't conformant to the XML 
> namespaces rec, and
> >XSLT won't generate it for you.
> >
> >David
> >
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