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Re: Re: URIs, concrete (was Re: Un-ask the question)

• To: uche.ogbuji@f...
• Subject: Re: Re: URIs, concrete (was Re: Un-ask the question)
• From: David Carlisle <davidc@n...>
• Date: Fri, 2 Aug 2002 00:54:57 +0100
• Cc: xml-dev@l...
• In-reply-to: <E17aOQ3-0004sw-00@m...> (message from Uche Ogbuji onThu, 01 Aug 2002 16:27:21 -0600)
• References: <E17aOQ3-0004sw-00@m...>

> On what basis do you make this inference?
the purpose of putting an attribute (or element) into a namespace is to
ne able to refer to that attribute or element name unambiguously from
other contexts. That's the _only_ thing that xml namespaces do: give
a method of allocating globally unique names.

so if you use an attribute in a namespace then the reason for doing that
(should) be so you can use that attribute in different contexts.
this is why xlink attruibutes (and xml:lang etc) are namespaced.


> This specification makes no assertions as to the proper usage of such
> attributes. The combination of the namespace name and the attribute name
> uniquely identifies the global attribute. 

in other words the phrase "global attribute" and "attribute in a
namespace" currently mean the same thing. which is why several people
have commented that unless you furher qualify something, a change that
puts unprefixed attributes into the namespace of their elements
will make them global attributes.

Thus Simon's and your assertion that putting these attributes into a
namespace does not make them global is wrong.
It would of course be possible to change more of the namespace spec and
change the definition of a global attribute. If that was done carefully
the objections might go away but without seeing all the proposed
changes, who can tell.

David

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