W3C home > Mailing lists > Public > xml-dist-app@w3.org > April 2001

Re: mid-course correction on abstract model for module processing

From: Mark Jones <jones@research.att.com>
Date: Wed, 4 Apr 2001 11:44:50 -0400 (EDT)
Message-Id: <200104041544.LAA06868@glad.research.att.com>
To: moreau@crf.canon.fr
Cc: hugo@w3.org, xml-dist-app@w3.org
	> Date: Wed, 04 Apr 2001 17:16:17 +0200
	> From: "Jean-Jacques Moreau" <moreau@crf.canon.fr>
	> To: Mark Jones <jones@research.att.com>
	> Cc: hugo@w3.org, xml-dist-app@w3.org
	> Subject: Re: mid-course correction on abstract model for module processing
	> Hugo, Yves,

	> Mark Jones wrote:

	> > Here's what I think is the point of the header/body issue and R802.  A
	> > simple and perhaps common scenario would have the Body containing
	> > blocks that represent the bulk of the bytes being exchanged between
	> > sender and ultimate recipient.  In this case, the hope is that
	> > intermediaries might be able to do a detailed parse of only a small
	> > portion of the envelope (the blocks in the Header), identifying and
	> > processing those header blocks targeted at the current node, and just
	> > copying through the rest of the message (from <Body> on).

	> Yes, I agree; and I meant "parsing", not "processing" -sorry!

	> My point was that:

	>   1. Depending on the application, messages may carry many more "header" blocks than
	>      "body" blocks.
	>   2. It may be impossible to group together, in the message, "header" blocks that are
	>      targeted at the same intermediary, for at least two reasons:
	>        1. Some "header" blocks may be targeted at multiple intermediaries.
	>        2. Some "header" blocks may be untargeted (target = .../none).
	> I am thus under the impression that there are cases where parsing a contiguous set of
	> "header" blocks will not be possible, and where intermediaries will have to possibly
	> parse the whole, long, "header" section.

In such cases the grouping wouldn't help.  R802 may be trying to
facilitate what it perceives to be a more common case, where the
body dominates the message size.

	> Jean-Jacques.

Mark Jones
AT&T Labs
Received on Wednesday, 4 April 2001 11:44:59 UTC

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