Composition of coordinated web services

  • Authors:
  • Stefan Tai;Rania Khalaf;Thomas Mikalsen

  • Affiliations:
  • IBM T.J. Watson Research Center, Hawthorne, New York;IBM T.J. Watson Research Center, Hawthorne, New York;IBM T.J. Watson Research Center, Hawthorne, New York

  • Venue:
  • Proceedings of the 5th ACM/IFIP/USENIX international conference on Middleware
  • Year:
  • 2004

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Abstract

The Web services architecture defines separate specifications for the composition and the coordination of Web services. BPEL is a language for creating service compositions in the form of business processes, whereas the WS-Coordination framework defines coordination protocols for distributed activities. In this paper, we investigate the combination of these two aspects to compose coordinated Web services. We argue for a policy-based approach to address this problem and introduce a new model and middleware that enables the flexible integration of diverse coordination types into (existing) process-based Web services compositions.