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Abstracting Services in a Heterogeneous Environment

  • Salah Sadou
  • Gautier Koscielny
  • Hafedh Mili
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2218)

Abstract

Applications often use objects that they do not create. In general, these objects belong to an execution environment and are used for some services (server objects). This makes applications strongly dependent on these objects and make them vulnerable to any modifications to these objects

In this paper, we present a solution to this problem through the service group concept. A service group is an intermediary between the applications and the server objects. A service group is defined by the administrator of the shared services, for the entire set of client applications. A service group embodies a collection of signatures corresponding to the provided services and maintains the required associations between these signatures and the actual implementations of these services by the server objects. The client applications access the services through service groups, and are no longer directly related to servers, thus becoming more independent and better protected from modifications to the server objects. The service group will not only make it possible to pool disparate services in order to structure execution environment, but also to construct new services by composing existing ones

Keywords

Distributed objects Dynamic reuse Disparate services Environment structuring Service compatibility Service group 

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Copyright information

© IFIP International Federation for Information Processing 2001

Authors and Affiliations

  • Salah Sadou
    • 1
  • Gautier Koscielny
    • 2
  • Hafedh Mili
    • 3
  1. 1.Valoria Lab.Université de Bretagne SudFrance
  2. 2.LIFL Lab.U.S.T. LilleFrance
  3. 3.Département d’informatiqueUniversité du Québec à MontréalCanada

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