[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

Re: URL: 19 Short Questions about Namespaces (with Answers)

• From: James Clark <jjc@j...>
• To: "XML Developers' List" <xml-dev@i...>
• Date: Tue, 09 Feb 1999 07:40:36 +0700

Tim Bray wrote:
> 
> At 05:06 PM 2/8/99 -0500, David Megginson wrote:
> >In response to several private requests, I've recast my posting into a
> >simple HTML page at the following location:
> 
> David, this is a terrific piece of work.  One of your answers makes
> me nervous:
> 
>  [Q] What is the name of the third attribute in the example above?
>  [A] The name is xmlns:z from the XML 1.0 perspective; from the Namespaces
>      perspective, this attribute is a declaration.
> 
> Somehow the part beginning "... from the Namespaces perspective" feels
> a bit like the question is being dodged: I'm spinning my wheels a bit
> in trying to suggest something better.  The point that's not being made
> is that in a namespace-aware system, the xmlns:z attribute is
> possibly just not there.  For example (I just checked) if you use
> expat and enable namespace processing, you just don't see the
> xmlns attributes

expat should probably have a start/endNamespaceDeclaration callback:
some applications (such as XSL) need to know what declarations are in
effect.

> - I don't think this is compulsory, but it also
> isn't surprising.  I'll try to think this over some more, but somehow
> 
> [Q] What's it's name?
> [A] It's a declaration.
> 
> doesn't quite feel satisfying.

Seems OK to me.  Compare:

[Q] What is the target name in

  <?xml version="1.0"?>

processing instruction?

[A] From the XML 1.0 perspective, it's not a processing instruction,
it's a declaration.

James



xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i...
Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1
To (un)subscribe, mailto:majordomo@i... the following message;
(un)subscribe xml-dev
To subscribe to the digests, mailto:majordomo@i... the following message;
subscribe xml-dev-digest
List coordinator, Henry Rzepa (mailto:rzepa@i...)

• References:
  • Re: URL: 19 Short Questions about Namespaces (with Answers)
    • From: Tim Bray <tbray@t...>

• Prev by Date: Re: Fw: "Clean Specs"
• Next by Date: RE: Storing Lots of Fiddly Bits (was Re: What is XML for?)
• Previous by thread: Re: "Namespaces in XML" idea?
• Next by thread: Re: URL: 19 Short Questions about Namespaces (with Answers)
• Index(es):
  • Date
  • Thread