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RE: Roy's ApacheCon presentation

From: Anne Thomas Manes <anne@manes.net>
Date: Wed, 20 Nov 2002 08:54:48 -0500
To: "Mark Baker" <distobj@acm.org>, <www-ws-arch@w3.org>
Message-ID: <ECEDLFLFGIEENIPIEJJPGEKLCNAA.anne@manes.net>

Roy is positioning Web services as an identical architecture to
RPC/CORBA/DCOM/etc.
He is ignoring the concept of standard service types, which is where the
power of Web services really comes in. Certainly lots of people are using
SOAP as a one-to-one replacement for RPC, but at this point few people are
exploiting its power. We're still waiting for the vertical domain industry
standards to appear. But it won't take very long.

Imagine, if you will, that you are an insurance agent. You sell policies for
many different insurance companies. Each insurance company uses different
application systems to implement their insurance claims processing systems,
but most agree to accept claims that conform to the standards defined by
ACORD. ACORD is now going one step further and is defining not just the XML
form that must be submitted, but also the WSDL for Web services that can
accept these forms. The ACORD member companies are pretty good about
supporting the ACORD standards, so it won't be long now before all these
insurance companies provide Web service interfaces to their claims process.
So as an insurance agent I can write a generic application that I can use to
submit claims to all of my insurance companies. This application supports
the abstract interfaces defined by the WSDL (the portTypes), and at runtime,
I select the company that I want to submit my claim to, and my application
grabs the implementation WSDL description for that company and dynamically
binds to that service.

That's not O(N^2) complexity.

Anne


> -----Original Message-----
> From: www-ws-arch-request@w3.org [mailto:www-ws-arch-request@w3.org]On
> Behalf Of Mark Baker
> Sent: Wednesday, November 20, 2002 2:52 AM
> To: www-ws-arch@w3.org
> Subject: Roy's ApacheCon presentation
>
>
>
> Hi all,
>
> FYI, an annual event for the past three years is Roy's presentation at
> ApacheCon, of incrementally more detail of Waka, his planned HTTP
> replacement protocol.
>
> This year, he also had something to say about Web services, and about
> a particular aspect of the value of the uniform interface that I don't
> commonly talk about.
>
> The presentation is only in PPT right now, so if you don't have it, what
> it says is that with Web services, integration complexity is O(N^2),
> while O(N) with a common interface.
>
> See;
>
> http://www.apache.org/~fielding/waka/
>
> MB
> --
> Mark Baker.  Ottawa, Ontario, CANADA.   http://www.markbaker.ca
>
>    Will distribute objects for food
>
Received on Wednesday, 20 November 2002 09:01:58 GMT

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