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   Re: Restricted Namespaces for XML

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  • From: "Don Park" <donpark@quake.net>
  • To: <xml-dev@ic.ac.uk>
  • Date: Thu, 4 Feb 1999 05:06:49 -0800

>I am in favour of chopping out some of the conceptual apparatus used to
>explain the features of "Namespaces for XML" not chopping out the
>features themselves.

I appologize for misrepresenting your position.

>Although restricting namespace declarations to the root element makes it
>a little easier to do namespace processing on input, it makes things
>much harder on output if you want to generate a document that combines
>multiple XML input documents.  For example, consider an XLink filter
>that resolves transclusions.  This restriction would require that it
>read all the input XML documents completely before it could produce any
>output, because it would need to move the declarations of the prefixes
>on the transcluded document roots up to the root of the generated output
>document.  I also doubt it would be any easier to understand: you're
>making a special case of the root element rather than treating all
>elements uniformly.

You are right, of course, if usage of well-formed external entity is not

I was not proposing that RNX replace the Namespace spec.  I was trying to
see there was a need for a strict subset of the Namespace spec which can not
handle some of the problems but is functional enough for most problems.  RNX
software is easier to write because there is not much to get confused about.

>I can't think of any feature in XML Namespaces that isn't really
>important for some significant application of XML Namespaces.
>I recommend reading
> http://www.w3.org/TR/NOTE-webarch-extlang
>for some background on the requirements that motivated the design of XML

Thanks for the link.


Don Park

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