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From Tom Oinn <>
Subject Re: Examples of stateful services
Date Thu, 23 Oct 2003 14:57:18 GMT
We have a project called Soaplab ( 
where the services are inherently stateful; they wrap around arbitrary 
command line tools (mostly life science analysis programs) and expose 
them as services driven by metadata descriptions. These follow a 
standard factory pattern; create returns an ID, this ID is then passed 
to all other operations. This state is therefore explicit, we do not use 
mechanisms such as sessions because there is a requirement to pick up 
state at a later point or at a different location.

In addition, we have a project called Taverna ( which is 
about composing services, web and otherwise, into workflows. This is in 
use with quite a few life science groups at the moment, we're interested 
in any feedback though :)



Mark Carman wrote:
> Dear all,
> Apologies if this request is slightly off topic for this list.
> Does anybody have any WSDL examples of services with state?
> We are trying to perform automated service/operation composition using 
> planning technology, and we need as many examples as possible of 
> services with internal state.
> Also if anybody has any examples of processes involving the composition 
> of multiple services, they would be very much appreciated.
> Yours,
> Mark Carman
> ITC-irst

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