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Re: QNames and the XPointer namespace scheme

From: Norman Walsh <Norman.Walsh@Sun.COM>
Date: Mon, 08 Jul 2002 13:39:07 -0400
To: www-tag@w3.org
Message-ID: <87eleejf0k.fsf@nwalsh.com>

/ Elliotte Rusty Harold <elharo@metalab.unc.edu> was heard to say:
| At 12:33 PM -0400 7/8/02, Norman Walsh wrote:
|
|>XPointers in a document do use the in-scope namespaces. One could also
|>use the xmlns() scheme in those pointers (because they aren't
|>forbidden), but it's never necessary to do so.
|
| Actually, they don't. They only use the xmlns() schema mappings.
| In-scope namespaces from the parent and ancestor elements do not apply.

That's not what the impression I get when I read the CR[1]:

   ...
   This evaluation is carried out within a context identical to the
                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   XPath evaluation context, except for the generalization of nodes to
   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   locations. XPointer applications must initialize the evaluation
   ^^^^^^^^^
   context as described in this section before evaluating an XPtrExpr.

So all the in-scope namespaces are there. Later it says:

   ...
   A set of namespace declarations, described in 5.2.1 Namespace Initialization .

which I take to mean that the xmlns() scheme bindings are also there.
But I still don't think they're necessary.

I think XPointer would be fundamentally broken if only xmlns()
bindings were available in the XPointer.

                                        Be seeing you,
                                          norm

[1] http://www.w3.org/TR/2001/CR-xptr-20010911/#context

-- 
Norman.Walsh@Sun.COM    | It is necessary to try to surpass oneself
XML Standards Architect | always; this occupation ought to last as long
Sun Microsystems, Inc.  | as life.--Christina, Queen of Sweden
Received on Monday, 8 July 2002 13:39:44 GMT

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