Enhancing Modularity in Aspect-Oriented Software Systems-An Assessment Study

Aspect-oriented programming (AOP) is rapidly gaining popularity among research and industry as a methodology that complements and extends the object-oriented paradigm.AOP promises to localize the concerns that inherently crosscut the primary structural decomposition of a software system. Localization of concerns is critical to parallel development, maintainability, modular reasoning and program understanding. However, AOP as it stands today is bringing problems in exactly these areas, defeating its purpose. Previous work and experience gleaned from building AOP systems have identified two points of contention that are impeding the adoption of AOP. First, the complication arising from the need to open up systems modules for AOP and the need to protect those modules against possible fault injection by AOP. Second, the need to have base system components stabilized before aspect components can be developed. Clearly, this adversely affects parallel development. This dependency also causes aspect components to be sensitive to changes in the base system, complicating maintainability, already a high-cost element in the software process. In this review paper, we argue that the AOP provides better modularity and here main focus is to assess the solution that affords better modularity to AOP systems. Keywords-Aspect Oriented Software Development (AOSD), Aspect Oriented Programming (AOP), Aspect Oriented (AO) System, AspectJ.