[dsdl-discuss] Re: Semantic framework for namespace processing and MNS2

On Wed, 14 May 2003 12:22:40 +0700
James Clark <jjc@jclark.com> wrote:

> I've developed a (moderately) formal framework for describing the
> semantics of namespace processing. I've found this helpful in thinking
> about how to evolve MNS. Attached is a document describing this
> framework and sketch of my current thinking on MNS2 using this framework
> including some example MNS2 schemas. It incorporates several ideas from
> Namespace Switchboard.

Thanks for this proposal. I have also thought that we need some formal framework.

>Data model

I like this idea. If I implement DSDL-VC, I would probably create
a SAX filter for implementing this data model.

The last paragraph in this section puzzles me. Consider a document
<foo xmlns=""><bar/></foo>. How many element sections does this document
have? One or two?

>Processing model

Your approach is algebraic or functional. However, I am not sure if
such an approach facilitates stream-based implementations. I think
that this functional or algebraic approach suggests DOM-based implementations
too strongly.

I have been thinking about a logical formalism. Now that I have seen your
data model, I think that it is possible to create a logic-based formalism for
studying VCSL, Namespace Switchboard and MNS. I am now writing a note about
this and will send it to this mailing list tomorrow.

Cheers,

-- 
MURATA Makoto <murata@hokkaido.email.ne.jp>
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