Improving Design Pattern Quality Using Aspect Orientation

Object oriented (OO) implementations of design patterns (DP) may suffer of some problems due to deficiencies of (OO) languages affecting some quality attributes such as modularity, comprehensibility, maintainability and testability. Aspect oriented programming (AOP) provides powerful constructs able to better handle modularity and composition; these constructs can help to overcome some of the trade-offs in current OO implementations of DPs. An approach to re-implement DPs by AOP is presented in this paper: some different AOP re-implementations of DPs in existing systems from real world have been performed to improve DPs quality. A set of existing metrics has been used to evaluate the quality of the different AOP implementations. Such an evaluation helps to select the implementation to use/reuse in a specified context