Contract-Based Discovery and Composition of Web Services

  • Authors:
  • Mario Bravetti;Gianluigi Zavattaro

  • Affiliations:
  • Department of Computer Science, University of Bologna, Italy;Department of Computer Science, University of Bologna, Italy

  • Venue:
  • Formal Methods for Web Services
  • Year:
  • 2009

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Abstract

In the context of Service Oriented Computing behavioural contracts are descriptions of the observable message-passing behaviour of services. In other terms, contracts are behavioural interfaces that can be used, for instance, to check whether a group of services can be safely combined avoiding, e.g., undesired deadlocks. In this paper we consider the problem of discovering available services that can be used to implement a given service system. The idea is to first design a service system by describing the overall behaviour of each of its participant, and then instantiate such participants retrieving services exposing a behavioural contract which is conformant with the corresponding given behaviour.