FuseJ : An architectural description language for unifying aspects and components

In this paper, we propose a novel component architecture and language that aims at achieving a natural unification between aspects and components. In order to modularize crosscutting concerns, this approach does not introduce a specialized aspect construct. Instead, an expressive aspectoriented composition mechanism is proposed that is applied upon existing component modules. When employing this unified component architecture, regular components are accessed through the use of gates. The behaviour behind these homogeneous gates is combined using expressive connectors that are able to describe both regular and aspect-oriented interactions. We present the FuseJ architectural description language, which realizes the unified component architecture in the setting of the JavaBeans component model. A first proof-of-concept implementation of the FuseJ language is available. In this paper, we evaluate the impact of the unified component architecture and language onto several software engineering properties, in particular comprehensibility, evolvability and predictability.

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