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Formal Connectors

Robert Allen and David Garlan.


Technical report, CMU-CS-94-115, Carnegie Mellon University, School of Computer Science, March 1994.

Online links: PS

Abstract
As software systems become more complex the overall system structure -- or software architecture -- becomes a central design problem. An important step towards an engineering discipline of software is a formal basis for describing and analyzing these designs. In this paper we present a theory for one aspect of architectural description: the interactions between components. The key idea is to define architectural connectors as explicit semantic entities. These are specified as a collection of protocols that characterize each of the participant roles in an interaction and how these roles interact. We illustrate how this scheme can be used to define a variety of common architectural connectors. We further provide a formal semantics and show how this leads to a system in which architectural compatibility can be checked in a way analogous to type checking in programming languages.

Keywords: Formal Methods, Software Architecture.  
@TechReport{Allen94ConnectorsTR,
      AUTHOR = {Allen, Robert and Garlan, David},
      TITLE = {Formal Connectors},
      YEAR = {1994},
      MONTH = {March},
      KEY = {Allen},
      NUMBER = {CMU-CS-94-115},
      INSTITUTION = {Carnegie Mellon University, School of Computer Science},
      PS = {http://reports.adm.cs.cmu.edu/usr/anon/1994/CMU-CS-94-115.ps},
      ABSTRACT = {As software systems become more complex the overall system structure -- or software architecture -- becomes a central design problem. An important step towards an engineering discipline of software is a formal basis for describing and analyzing these designs. In this paper we present a theory for one aspect of architectural description: the interactions between components. The key idea is to define architectural connectors as explicit semantic entities. These are specified as a collection of protocols that characterize each of the participant roles in an interaction and how these roles interact. We illustrate how this scheme can be used to define a variety of common architectural connectors. We further provide a formal semantics and show how this leads to a system in which architectural compatibility can be checked in a way analogous to type checking in programming languages.},
      KEYWORDS = {Formal Methods, Software Architecture}
}
    Created: 2006-08-22 17:29:49     Modified: 2006-08-22 17:30:45
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