Local specification of distributed families of sequential objects

  • Hans-Dieter Ehrich
  • Amilcar Sernadas
Contributed Papers
Part of the Lecture Notes in Computer Science book series (LNCS, volume 906)

Abstract

Fully concurrent models of distributed object systems axe specified using linear temporal logic that does not per se cope with concurrency. This is achieved by employing the principle of local sequentially: we specify from local viewpoints assuming that there is no intra-object concurrency but full inter-object concurrency. Local formulae are labelled by identity terms. For interaction, objects may refer to actions of other objects, e.g., calling them to happen synchronously. A locality predicate allows for making local statements about other objects. The interpretation structures are global webs of local life cycles, glued together at shared communication events. These interpretation structures are embedded in an interpretation frame that is a labelled locally sequential event structure. Two initiality results are presented: the category of labelled locally sequential event structures has initial elements, and so has the full subcategory of those satisfying given temporal axioms. As in abstract data type theory, these initial elements are obvious candidates for assigning standard semantics to signatures and specifications.

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Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • Hans-Dieter Ehrich
    • 1
  • Amilcar Sernadas
    • 2
  1. 1.Abteilung DatenbankenTechnische UniversitätBraunschweigGermany
  2. 2.Departamento de MatemáticaInstituto Superior TécnicoLisboa CodexPortugal

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