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   namespace URI of xmlns prefix

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Could someone clarify part of the XML Namespaces spec for me?

The spec states that namespace declarations are a special category of 
attribute: "A namespace is *declared* using a family of reserved 
attributes. Such an attribute's name must either be |xmlns| or have 
|xmlns:| as a prefix".

So if a namespace declaration like 
xmlns:foo="http://www.foo.com/some.namespace"; is made, and that 
declaration is considered a type of attribute, then:

- the namespace prefix of the attribute is "xmlns"
- the local name of the attribute is "foo"
- the value of the attribute is "http://www.foo.com/some.namespace";

But what is the namespace URI of the attribute? What namespace does the 
prefix "xmlns" belong to?

And then you have default namespace declarations, such as 

- the namespace prefix of the attribute is an empty string: ''
- the local name of the attribute is "xmlns"
- the value of the attribute is "http://www.foo.com/some.namespace";

And I presume in this case, the namespace URI would be an empty string?

I'm asking because I'm unsure how a DOM method like getAttributeNS is 
supposed to deal with namespace declarations. Would xmlns attributes 
simply be ignored in this case?

John Heinstein

John Heinstein
VP Software Development
Engage Interactive
921 College Hill Rd.
Fredericton, NB
E3B 6Z7

phone: (506) 460-1627
fax: (506) 460-1626



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