Evolution de patrons de conception Objet en patrons Aspect. Une approche par métamodélisation et transformation de modèles

Several works have been done on realizing object-oriented design patterns by using aspect-oriented mechanisms and concepts. Beyond the proposal for the 23 GoF patterns of AspectJ and Hyper/J implementations, we have adopted a meta-modelling and model transformation approach that allows us to propose for these patterns new generic aspect-oriented solutions which are not specifie to a single aspect-oriented programming language. Aspect/UML, a general meta-model for expressing aspect-oriented designs has been defined by abstraction of two other ineta-models, AspectJ/UML and HyperJ/UML, respectively proposed for AspectJ and Hyper/J. Models transformation rules from Aspect/UML into either AspectJ/UML or HyperJ/UML hâve aiso been defined. Expressing the 23 GoF patterns using Aspect/UML led us to end with a System consisting of only 8 aspect-based patterns.