Dynamic Adaptation of Software Component Structures

We present in this paper an approach aiming at dynamically adapting a component structure while preserving its behavior and its services. Among the motivations of this kind of adaptation, we note its possible application to allow a dynamic redeployment of component services according to the available resources (e.g. CPU, memory). The run-time software component structural adaptation process is based on two phases. The first one consists in transforming this component by generating a dynamically adaptable component structure. This transformation is based on the analysis and the instrumentation of component code. The second phase of the adaptation process allows us to adapt the component dynamically by the reconfiguration of its internal structure