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Using formal methods to develop WS-BPEL applications

Lapadula, Alessandro and Pugliese, Rosario and Tiezzi, Francesco Using formal methods to develop WS-BPEL applications. Science of Computer Programming, 77 (3). pp. 189-213. ISSN 0167-6423 (2012)

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In recent years, WS-BPEL has become a de facto standard language for orchestration of Web Services. However, there are still some well-known difficulties that make programming in WS-BPEL a tricky task. In this paper, we firstly point out major loose points of the WS-BPEL specification by means of many examples, some of which are also exploited to test and compare the behaviour of three of the most known freely available WS-BPEL engines. We show that, as a matter of fact, these engines implement different semantics, which undermines portability of WS-BPEL programs over different platforms. Then we introduce Blite, a prototypical orchestration language equipped with a formal operational semantics, which is closely inspired by, but simpler than, WS-BPEL. Indeed, Blite is designed around some of WS-BPEL distinctive features like partner links, process termination, message correlation, long-running business transactions and compensation handlers. Finally, we present BliteC, a software tool supporting a rapid and easy development of WS-BPEL applications via translation of service orchestrations written in Blite into executable WS-BPEL programs. We illustrate our approach by means of a running example borrowed from the official specification of WS-BPEL.

Item Type: Article
Identification Number: 10.1016/j.scico.2011.03.002
Projects: IThis work has been partially supported by the EU project SENSORIA IST-2005-016004
Uncontrolled Keywords: Service-oriented architectures, Web services, Formal methods, WS-BPEL, Operational semantics, Compilers
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Research Area: Computer Science and Applications
Depositing User: Users 31 not found.
Date Deposited: 02 May 2013 13:30
Last Modified: 02 May 2013 13:30
URI: http://eprints.imtlucca.it/id/eprint/1563

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