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ACCORD is a novel concept of aspectual component-based real-time system development. ACCORD allows the integration of the two disciplines, component-based and aspect-oriented software development, into real-time systems development , thus enabling: (i) efficient system configuration from the components in the component library based on the system's requirements, (ii) easy tailoring of components and/or a system for a specific application by changing the behavior (code) of the component by applying aspects, and (iii) enhanced flexibility of the real-time and embedded software through the notion of system's configurability and components' tailorability. Through the notion of aspects and components, ACCORD enables efficient application of the divide-and-conquer approach to complex real-time system development. ACCORD supports a decomposition process that consists of the following sequential phases: (i) decomposition of the real-time system into a set of components and a set of aspects, corresponding to the structural view of the components and the real-time system, and (ii) task structuring, corresponding to the temporal view of the components and the real-time system. Withing ACCORD we developed techniques for maintaining the specified level of quality of service under system operation, as well as under system reconfiguration. Also, we have used ACCORD for design and development of the COMET database platform. |
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