RE: [xsl] Namespace-alias using #default with no default namespace in scope

Subject: RE: [xsl] Namespace-alias using #default with no default namespace in scope
From: "Buchcik, Kasimier" <k.buchcik@xxxxxxxxxxxx>
Date: Fri, 12 May 2006 12:11:10 +0200

> -----Original Message-----
> From: David Carlisle [mailto:davidc@xxxxxxxxx]
>   Ah! Is a more recent version of the XSLT 2.0 spec available
>   somewhere? I'm currently reading,
>   which says: "W3C Candidate Recommendation 3 November 2005".
> as it says at the top of (all) w3c working drafts the
> "undated" URI such
> as is always the most recent version (and
> updated in place) when newer versions are published. The URI for a
> particular draft is always of the form
> which will always refer to the CR draft even if a later draft is
> published.

OK. It would be interesting for me to see how the spec evolves.
I guess there is a document which is kept up-to-date, but accessible
only to W3C-members, right?

> > I already searched the spec for something like "#none" to be
> > specified if one wants to move elements from/to no namespace.
> > Using a "#none" would be clearer in my opinion; additionally
> > safer, since, if stylesheets are generated by e.g. multiple
> > transformation steps, one might not know at the end if a
> > transformation step hasn't decided to generate a default
> > namespace declaration on a relevant element like xsl:stylesheet;
> > thus a "#default", originally intended to refer to no namespace,
> > might incorrectly refer to an existing default namespace in the end.
> >
> It's only the bindings that are in scope on the xsl:namespace-alias
> element that matter to namespace-alias (as far as resolving which
> namespace #default refers to).

What I was referring to is a scenario, where stylesheets are
itself the result of a chain of transformations. You have total control
over the stylesheet you write, but you might not have total control
over what ns-declarations were added to result trees.

> > Couldn't there be a rule, or at least a suggestion in XSLT
> 2.0 to use
> > either the literal namespace prefix or the target namespace prefix?
> xslt2 is a more explict here. the rules imply (and the following note
> makes explict) that the stylesheet-prefix is not used in the result.
>    These rules achieve the effect that the element generated from the
>    literal result element will have an in-scope namespace
> node that binds
>    the result-prefix to the target namespace URI, provided that the
>    namespace declaration associating this prefix with this
> URI is in scope
>    for both the xsl:namespace-alias instruction and for the
> literal result
>    element. Conversely, the stylesheet-prefix and the literal
> namespace URI
>    will not normally appear in the result tree.
> David

Great! That's good news.

Thanks & regards,


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