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RE: The use of XML syntax in XML Query

• To: "Julian Reschke" <julian.reschke@g...>, "Evan Lenz" <elenz@x...>, "David Carlisle" <davidc@n...>
• Subject: RE: The use of XML syntax in XML Query
• From: Jonathan Robie <jonathan.robie@s...>
• Date: Fri, 04 Jan 2002 11:02:49 -0500
• Cc: <xml-dev@l...>
• In-reply-to: <JIEGINCHMLABHJBIGKBCAEMNDLAA.julian.reschke@s...>
• References: <5.1.0.14.0.20020103193747.04162120@s...>

At 10:30 AM 1/4/2002 +0100, Julian Reschke wrote:

>One thing that comes to mind is that XML Query talks about "the namespace
>URI", while XMLNAMES uses the term "namespace name". Besides, a namespace
>name takes the form of a URI *reference*, not an URI.

I tried to use vocabulary consistent with XPath 1.0:

"Some types of nodes also have names. XPath fully supports XML Namespaces 
[XML Names]. Thus, the name of a node is modeled as a pair consisting of a 
local part and a possibly null namespace URI; this is called an expanded-name."

>The other thing that is a bit strange is that because of the
>copy-rather-than-reference approach XML Query needs to define the semantics
>of XML namespace declarations *at all*.

This I do not understand.

When XQuery operates on an existing document, it uses the namespaces of the 
document. Element constructors, however, occur XQuery, and the correct 
namespaces need to be assigned for the constructed elements. My intent was 
to say that element constructors treat namespaces pretty much the way you 
would expect them to if you understand XML.

Jonathan

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