RE: Debating on the usefulness of supporting .... - Clarifying "Stateful Web Service Instance"

--- Savas Parastatidis
<Savas.Parastatidis@newcastle.ac.uk> wrote:

> 
> It is possible to associate state with context
> exchange. Upon retrieving
> the context information, a Web service is capable of
> reasoning about the
> state in relation to that context. Lifetime
> management related
> attributes can be associated with the context (e.g.,
> expiration time).

The W3C Choreography WG part of yesterday looking at
Event Calculus as a possible underling formalism.  It
looks pretty promising as a way of doing exactly what
you're talking about here.  But clearly this is at a
layer above or orthogonal to SOAP and WSDL.