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Re: namespace inheritance


xml namespace inherit
  Hello Amelia,

  thank you very much. I've re-read the Recommendation and found the
phrase that misled me: "the interpretation of unprefixed attributes is
determined by the element on which they appear." I must have read more
attentive and found the phrase which is similar to what you said: "The
namespace name for an unprefixed attribute name always has no value."


On Thu, 5 May 2005 15:06:17 -0400
Amelia A Lewis <amyzing@t...> wrote:

> On Thu, May 05, 2005 at 10:32:58PM +0400, Oleg A. Paraschenko wrote:
> >  First, as I understand, if an attribute has no ns prefix, and the
> >attribute's element has a ns prefix, then the attribute inherits the ns
> >URI from the element. So the following two XML documents are equal:
> 
> No.
> 
> >1) <ns:elem xmlns:ns="ns:ns:ns" ns:attr="smth" />
> >
> >2) <ns:elem xmlns:ns="ns:ns:ns" attr="smth" />
> >
> >  Using the James Clark notation, the both examples define the
> >  following:
> >
> ><{ns:ns:ns}elem {ns:ns:ns}attr="smth" />
> >
> >  Am I right?
> 
> No.
> 
> Attributes live in the global namespace by default; they do *not*
> inherit the default namespace, unlike elements.  Therefore, your first
> example above defines the result you show, and the second defines:
> 
> <{ns:ns:ns}elem {}attr="smth" />
> 
> The only way to get an element in a namespace is to put it there; an
> attribute without a prefix is always in the global (unnamed) namespace.
> 
> This usually confuses people, because it isn't the way that elements
> behave. It is, however, what the namespaces specification defines.
> 
> Amy!
> -- 
> Amelia A. Lewis                    amyzing {at} talsever.com
> The one thing you can't trade for your heart's desire is your heart.
> 		-- Miles Vorkosigan
> 


-- 
Oleg Paraschenko  olpa@ http://xmlhack.ru/  XML news in Russian
http://uucode.com/blog/  Generative Programming, XML, TeX, Scheme

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