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RE: Negotiate Out The Noise

• To: xml-dev@l...
• Subject: RE: Negotiate Out The Noise
• From: "Bullard, Claude L (Len)" <clbullar@i...>
• Date: Thu, 17 Jan 2002 09:31:09 -0600

RDDL is fine at that level of integration.  I just 
don't see it mentioned as often outside XML-Dev in 
articles on web services as the umpteen other web 
service languages such as WSDL, UDDI, XLang, the MS proposal 
for an Inspection language and so on.  Part of negotiation 
is picking the system or protocol of negotiation.  I need 
to be convinced RDDL is important.  I know, for 
example, WSDL and UDDI are given the vendor 
support.  I also understand there are problems 
with WSDL if used as an IDL (see this weeks' 
XML.COM article on the subject).

http://www.xml.com/pub/a/2002/01/16/endpoints.html

That aside, my intuition is that the really useful 
web services for the organizational programmer will 
be coarse-grained and at the level of reports because 
that is something the organization has, it understands, 
and which is easily discoverable and negotiable.  
Below that level, intense and sometimes expensive 
customization is required, so some web services will 
turn out to be quite local or limited as the potential 
numbers of clients and possibly transient.

Negotiation is typically dynamic, is done as a series, and 
depends on acks to ensure both sides understand 
each other or to put it another way, accept the 
domination of one side's understanding.  If you 
negotiate contracts, you play a game of option 
swapping (always this, this for that, this but 
not that, never this or that) and so on.

If a web service is fine grained (the Amy Lewis 
model), can I detect cases of deadly embrace 
easily?

len

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