Adapting Object-Oriented Components

Document type: Conference Papers
Peer reviewed: Yes
Full text:
Author(s): Jan Bosch
Title: Adapting Object-Oriented Components
Conference name: Workshop Component-oriented programming WCOP ´97
Year: 1997
Pagination: 379-383
ISBN: 3540640398
Publisher: Springer
City: Jyvaskylä; Finland
Organization: Blekinge Institute of Technology
Department: Dept. of Computer Science and Business Administration (Institutionen för datavetenskap och ekonomi)
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+46 455 780 00
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Authors e-mail: jan.bosch@ide.hk-r.se
Language: English
Abstract: Several authors have identified that the only feasible way to increase productivity in software construction is to
reuse existing software. To achieve this, component-based software development is one of the more promising
approaches. However, traditional research in component-oriented programming often assumes that components are
reused "as-is". Practitioners have found that "as-is" reuse seldomly occurs and that reusable components generally
need to be adapted to match the system requirements. Existing component object models provide only limited sup-port
for component adaptation, i.e. white-box techniques such as copy-paste and inheritance and black-box
approaches such as aggregation and wrapping. These techniques suffer from problems related to reusability, effi-ciency,
implementation overhead or the self problem. To address these problems, this paper proposes superimposi-tion,
a novel black-box adaptation technique that allows one to impose predefined, but configurable types of
functionality on a reusable component. Three categories of typical adaptation types are discussed, related to the
component interface, component composition and component monitoring. Superimposition and the types of com-ponent
adaptation are exemplified by several examples.
Subject: Software Engineering\General
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