RE: [docbook] namespace markup

["Johnson, Eric" <Eric.Johnson@iona.com>]

I agree that an XML namespace is not a URI, but based on this from the
XML namespace spec:

[1][Definition: An XML namespace is identified by a URI reference
[RFC3986]; element and attribute names may be placed in an XML namespace
using the mechanisms described in this specification.]

It is clear that a the string used to specify the namespace, its
namespace name, is a URI. It may be a URI that is constrained as to its
possible contents, but it is still a URI.

So, as Jirka pointed out the best way, IMHO, is to use <uri
type="xmlnamespace"> when referring to an XML namespace using its
namespace name.

Again from the spec:

[1][Definition: For a name N in a namespace identified by a URI I, the
namespace name is I.] 

[1] http://www.w3.org/TR/REC-xml-names

Cheers,
Eric

> -----Original Message-----
> From: Jirka Kosek [mailto:jirka@kosek.cz] 
> Sent: Thursday, March 08, 2007 7:04 AM
> To: Peter Ring
> Cc: docbook@lists.oasis-open.org
> Subject: Re: [docbook] namespace markup
> 
> Peter Ring wrote:
> 
> > In short: an XML namespace name looks a lot like an URI, and an XML 
> > namespace declaration look a lot like assigning a value to an 
> > attribute. But you cannot really infer much about the 
> semantics of XML 
> > namespaces from that. An XML namespace name is not a type of URI.
> 
> While I not disagree with you, I think that this reasoning is 
> quite sort of mental gymnastic.
> 
> If you have namespace in your document you don't see abstract 
> concept of namespace you see URI, and best what you can do is 
> to markup it as a URI and say that this particular URI is 
> used as namespace name.
> 
> This is also suggested in TDG5:
> 
> http://www.docbook.org/tdg5/en/html/uri.html
> 
> URI are simply used for too many things nowadays and it is 
> unreasonable to have separate element name for each such usage.
> 
> 				Jirka
> 
> --
> ------------------------------------------------------------------
>   Jirka Kosek      e-mail: jirka@kosek.cz      http://xmlguru.cz
> ------------------------------------------------------------------
>        Professional XML consulting and training services
>   DocBook customization, custom XSLT/XSL-FO document processing
> ------------------------------------------------------------------
>  OASIS DocBook TC member, W3C Invited Expert, ISO/JTC1/SC34 member
> ------------------------------------------------------------------
>  Want to speak at XML Prague 2007 => http://xmlprague.cz/cfp.html
> 
>