Specifying Service Composition Using UML 2.x and Composition Policies

  • Judith E. Y. Rossebø
  • Ragnhild Kobro Runde
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5301)

Abstract

In the current and future service environment, service parts are being developed separately while being dynamically combined at runtime. In this paper we address the problem of defining a model-driven process for enabling dynamic composition of services. Composition policies are used to define choices in behaviour under which service roles involved in a composite service can be dynamically combined at runtime. We model policy-ruled choreography of collaboration components using a policy enforcement state machine (PESM). We also define transformation rules for translating a global PESM diagram into a set of local PESM diagrams, one for each role. As an example, we consider the case of dynamically composing an existing service with a set of authentication and authorization collaborations. The approach is supported by a formal syntax and semantics.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Judith E. Y. Rossebø
    • 1
    • 2
  • Ragnhild Kobro Runde
    • 3
  1. 1.Department of TelematicsNTNUNorway
  2. 2.Telenor R&INorway
  3. 3.Department of InformaticsUniversity of OsloNorway

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