Dynamic Architectural Adaptation Using Ontologies

Software Adaptation promotes the use of specific computational entities called adaptors that guarantee software components will interact in the right way, not only at the signature level, but also at the behavioral, semantic and service levels. Adaptation techniques have proceeded by computing adaptors for closed systems made up of a fixed set of components. This is not satisfactory when the systems may evolve, with components entering or leaving it at any time. To enable adaptation on such systems, we propose one implementation of adaptors under .NET platform and we show how using an ontology one adaptor can be improved in order to achieve a runtime adaptation at service level in a developed system when a component is missing or replaced by other. This capability will increase the Quality of Service (QoS), making the system be Fault Tolerant.