Composition Patterns: An Approach to Designing Reusable Aspects

Requirements such as distribution or tracing have an impact on multiple classes in a system. They are cross-cutting requirements, or aspects. Their support is, by necessity, scattered across those multiple classes. A look at an individual class may also show support for cross-cutting requirements tangled up with the core responsibilities of that class. Scattering and tangling make object-oriented software difficult to understand, extend and reuse. Though design is an important activity within the software lifecycle with well-documented benefits, those benefits are reduced when cross-cutting requirements are present. This paper presents a means to mitigate these problems by separating the design of cross-cutting requirements into composition patterns. Composition patterns require extensions to the UML, and are based on a combination of the subjectoriented model for composing separate, overlapping designs, and UML templates. This paper also demonstrates how composition patterns map to o...

• Type: Conference
• Year: 2001
• Where: ICSE
• Authors: Siobhán Clarke, Robert J. Walker
• Keywords: Composition Patterns, Cross-cutting Requirements, ICSE 2001, Multiple Classes, Software Engineering