In this article, a method for selecting paradigms, viewed as solution domain concepts, appropriate for given application domain concepts is proposed. In this method, denoted as multi-paradigm design with feature modeling, both application and solution domain are modeled using feature modeling. The selection of paradigms is performed in the process of feature modeling based transformational analysis as a paradigm instantiation over application domain concepts. The output of transformational analysis is a set of paradigm instances annotated with the information about the corresponding application domain concepts and features. According to these paradigm instances, the code skeleton is being designed. The approach is presented in conjunction with its specialization to AspectJ programming language. Transformational analysis performed according to the AspectJ paradigm model enables an early aspect identification.
Abstract. An approach to aspect-oriented change realization is proposed in this paper. With aspect-oriented programming changes can be treated explicitly and directly at the programming language level. Aspect-oriented change realizations are mainly based on aspect-oriented design patterns or themselves constitute pattern-like forms in connection to which domain independent change types can be identified. However, it is more convenient to plan changes in a domain specific manner. Domain specific change types can be seen as subtypes of generally applicable change types. This relationship can be maintained in a form of a catalog. Further changes can actually affect the existing aspect-oriented change realizations, which can be solved by adapting the existing change implementation or by implementing an aspect-oriented change realization of the existing change without having to modify its source code. Separating out the changes this way can lead to a kind of aspect-oriented refactoring beneficial to the application as such. As demonstrated partially by the approach evaluation, the problem of change interaction may be avoided to the large extent by using appropriate aspect-oriented development tools, but for a large number of changes, dependencies between them have to be tracked, which could be supported by feature modeling.
Multi-paradigm design is a metaparadigm: it enables to select the appropriate paradigm among those supported by a programming language for a feature being modeled in a process called transformational analysis. A paradigm model is a basis for multi-paradigm design. Feature modeling appears to be appropriate to represent a paradigm model. Such a model is proposed here for AspectJ language upon the confrontation of multi-paradigm design and feature modeling. Subsequently, the new transformational analysis is discussed.
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