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CaSPiS: a calculus of sessions, pipelines and services

Boreale, Michele and Bruni, Roberto and De Nicola, Rocco and Loreti, Michele CaSPiS: a calculus of sessions, pipelines and services. Mathematical Structures in Computer Science, 25 (3). pp. 666-709. ISSN 0960-1295 (2015)

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Service-oriented computing is calling for novel computational models and languages with well-disciplined primitives for client–server interaction, structured orchestration and unexpected events handling. We present CaSPiS, a process calculus where the conceptual abstractions of sessioning and pipelining play a central role for modelling service-oriented systems. CaSPiS sessions are two-sided, uniquely named and can be nested. CaSPiS pipelines permit orchestrating the flow of data produced by different sessions. The calculus is also equipped with operators for handling (unexpected) termination of the partner's side of a session. Several examples are presented to provide evidence of the flexibility of the chosen set of primitives. One key contribution is a fully abstract encoding of Misra et al.'s orchestration language Orc. Another main result shows that in CaSPiS it is possible to program a ‘graceful termination’ of nested sessions, which guarantees that no session is forced to hang forever after the loss of its partner.

Item Type: Article
Identification Number: 10.1017/S0960129512000953
Projects: Research supported by the Project FET-GC II IST-2005-16004 Sensoria
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Research Area: Computer Science and Applications
Depositing User: Ms T. Iannizzi
Date Deposited: 03 Mar 2015 09:49
Last Modified: 03 Mar 2015 09:49
URI: http://eprints.imtlucca.it/id/eprint/2626

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