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

Re: Untargetted blocks (was Re: Must understand mustUnderstand proposal)

From: Marc J. Hadley <marc.hadley@sun.com>
Date: Wed, 09 May 2001 17:35:38 +0100
Message-ID: <3AF971DA.666D0FC2@sun.com>
To: Doug Davis <dug@us.ibm.com>
CC: xml-dist-app@w3.org
Doug Davis wrote:
> I not quite see the difference between "None" and "Final"/Empty.
> Header with a value of "None" will not be removed before it reaches
> the final destination because only blocks targeted for a particular
> actor will be removed by that actor, just like "Final", right?  And in both
> "None" and "Final" those headers can be referenced by other blocks, right?
> What am I missing?
The difference is more semantic than functional. A block targeted for
"None" is not intended to be processed directly but only as a
consequence of processing another block that references it. A block that
is targeted for "Final"/Empty is intended to be directly processed by
the final recipient.

By "directly processed" I mean that an actor/handler is invoked to
process the block.

Any clearer ?


Marc Hadley <marc.hadley@sun.com>
Tel: +44 1252 423740
Int: x23740
Received on Wednesday, 9 May 2001 12:36:00 UTC

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