magdeburg.de

Design patterns aim at improving reusability and variabil-ity of object-oriented software. Despite a notable success, aspect-oriented programming (AOP) has been discussed re-cently to improve the design pattern implementations. In another line of research it has been noticed that feature-oriented programming (FOP) is related closely to AOP and that FOP suffices in many situations where AOP is com-monly used. In this paper we explore the assumed duality between AOP and FOP mechanisms. As a case study we use the aspect-oriented design pattern implementations of Hannemann and Kiczales. We observe that almost all of the 23 aspect-oriented design pattern implementations can be transformed straightforwardly into equivalent feature-oriented design patterns. For further investigations we pro-vide a set of general rules how to transform aspect-oriented programs into feature-oriented programs