Multiple Concern Adaptation for Run-time Composition in Context-Aware Systems

Authors:
Javier Cámara;Carlos Canal;Gwen Salaün
Affiliations:
Dept. of Computer Science, University of Málaga, Spain;Dept. of Computer Science, University of Málaga, Spain;Dept. of Computer Science, University of Málaga, Spain
Venue:
Electronic Notes in Theoretical Computer Science (ENTCS)
Year:
2008

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Abstract

Context-Aware computing studies the development of systems which exploit context information (e.g., user location, network resources, time, etc.), which is specially relevant in mobile systems and pervasive computing. When these systems are built assembling pre-existing software components (COTS), the composition process must be able to solve potential interoperability problems, adapting component interfaces. In addition, the composition must be adapted to the execution conditions of such systems, which are likely to change at run-time, affecting component behaviour. This work presents an approach to the flexible composition of possibly mismatching behavioural interfaces in systems where context information can vary at run-time. Our approach enables composition at run-time, enabling dynamic changes in composition according to context changes. Furthermore, our approach simplifies the specification of composition/adaptation by keeping Separation of Concerns, and is able to handle context-triggered adaptation policies.