In the context of Service Oriented Computing, contracts are descriptions of the observable behaviour of services. Contracts have been already successfully exploited to solve the problem of client/service composition. In this paper we consider services where the choice to perform an output may not depend on the environment and we revisit the theory of contracts in order to tackle the problem of composition of multiple services (not only one client with one service). Moreover, we relate our theory of contracts with the theory of testing preorder (interpreted as a subcontract relation) and we show that a compliant group of contracts is still compliant if every contract is replaced by one of its subcontract.

Contract Based Multi-party Service Composition

BRAVETTI, MARIO;ZAVATTARO, GIANLUIGI
2007

Abstract

In the context of Service Oriented Computing, contracts are descriptions of the observable behaviour of services. Contracts have been already successfully exploited to solve the problem of client/service composition. In this paper we consider services where the choice to perform an output may not depend on the environment and we revisit the theory of contracts in order to tackle the problem of composition of multiple services (not only one client with one service). Moreover, we relate our theory of contracts with the theory of testing preorder (interpreted as a subcontract relation) and we show that a compliant group of contracts is still compliant if every contract is replaced by one of its subcontract.
International Symposium on Fundamentals of Software Engineering. Proceedings
207
222
M.Bravetti; G.Zavattaro
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11585/49161
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