Developing Adapters for Structural Adaptation of Component-based Applications

Building upon the Service Oriented Architecture, applications can be defined as an assembly of abstract components that are resolved by integrating transparently functionalities provided by heterogeneous resources. However, applications in pervasive environments have to operate under highly dynamic and unpredictable context. This may give rise to several problems denoting that there are mismatches between their descriptions and the execution environments (e.g., heterogeneity of services discovery protocols). Therefore, there is a crucial need to adapt applications in order to overcome these mismatches. In this work, we present a dynamic structural adaptation approach for abstract applications. Our approach is based on the transformation of applications by injecting adapters into their descriptions with respect to their functional behaviour. We propose a fine-grained template to define these adapters. We also give an overview of some results of our evaluations to validate our approach.