Resumen
The article focuses on aspect-oriented-programming (AOP) which is based on the idea that computer systems are better programmed by separately specifying the various concerns of a system and description of their relationships. AOP is focused on mechanisms for simplifying the realization of crosscutting concerns. Aspectual requirements are concerns that introduce crosscutting in the implementation. Examples of aspectual requirements include synchronization policies that require a whole set of operations to following a consistent locking protocol, traversals of complex object graphs that require global information, accounting mechanisms that must be notified of every chargeable action, fault tolerance mechanisms that require consistent creation of redundant copies, and quality of service concerns that require fine tuning of system priorities. AOP, the author further maintains, offers aspects, mechanisms beyond subroutines and inheritance for localizing the expression of a crosscutting concern. INSET: Furhter Information.