Cyrille,
As I have it currently in my mind, we have
(at least) two types of services in SEE infrastructure. You have (1) fixed set
of services (e.g. discovery, data mediator, process mediator, etc.) which are
defined by static API and you have (2) world of dynamic services which are bind
dynamically. Both types of services are described using the same formalism (whatever
this formalism is).
When we were doing initial work on WSMX [1]
we were talking in terms of components for fixed services and just services for
these services that we bind dynamically. I was recently attending Service Oriented
Computing in Dagstuhl and I realized that SOC community still cannot give a
convincing argument how these two differ. That is why I would prefer to say,
that in SEE infrastructure everything is a service, just some of these services
are having fixed interfaces.
I CC group, as I definitely believe we
should ask for opinions of others on thisJ.
Michal
[1] www.wsmx.org
From: Cyrille Thilloy
[mailto:cyrille@thilloy.com]
Sent: 01 December 2005 16:10
To: Michal Zaremba
Subject: Re: [semantic-ex] First
draft SWS architecture document
Regarding the Table of content of the document I have
alomost a “philosophical” concern regarding the SEE API. Should it
be an API or an XML-based contract/protocol? APIs always force static bindings
while contracts allow dynamic/runtime bindings. I think the adoption of WS for
SOA is, at least in part, coming form the decoupling provided by the service
interface/contract. SOA or services could have been done in RPCs, CORBA-IDL,
RMI, etc but this would have implies the static compilation of stubs on both
end of the communication channel (client & server).
Let me know what you think about that and if the subject
should be discussed during the conf. call
(I am sorry but won't be available for the conf. call.).
Cyrille
Michal Zaremba <michal.zaremba@deri.org>
wrote:
Hi,
Please find attached first draft of SWS architecture document. I have made
initial proposal for a table of contents, which should be discussed
tomorrow. We will also have to decide who takes care of which section.
Michal
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Michal Zaremba
Digital Enterprise Research Institute (DERI) Galway
Phone: +353 91 495009
Mobile: +353 85
7195862
Fax: +353 91 495541
DERI web: http://www.deri.ie
Homepage: http://www.mzaremba.prv.pl
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