Specifying Frameworks and Design Patterns as Architectural Fragments

  • Authors:
  • Jan Bosch

  • Affiliations:
  • -

  • Venue:
  • TOOLS '98 Proceedings of the Technology of Object-Oriented Languages and Systems
  • Year:
  • 1998

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Abstract

Object-oriented software architectures, such as design patterns and frameworks, have found extensive use in software industry. Their implementation in traditional object-oriented programming languages, however, is often difficult, since no support for the explicit specification of software architectures is provided. In this paper, we develop the notion of architectural fragments, i.e. reusable architectural specifications that describe a design pattern or a framework architecture. An architectural fragment describes the structure of an architecture in terms of its components (roles), the architecture-specific behaviour of the components and the architecture-specific interaction between the components. Fragments can be composed with each other and with reusable components. To illustrate the use of fragments, we describe the role and architecture language constructs in the layered object model (LayOM) and present examples.