Efficient development of highly reusable distributed systems using the TCAO
ACST'07 Proceedings of the third conference on IASTED International Conference: Advances in Computer Science and Technology
Workflow: a language for composing web services
BPM'03 Proceedings of the 2003 international conference on Business process management
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Web services dramatically increase the reach of e-business. A homogeneous model that spans internal as well as external resources enables uniform solutions to complex business problems. Yet, the complexity of web-service-based systems increases exponentially with theirscope. Separation of crosscutting concerns and active management of aspects are fundamental in web-service-based solutions.In this paper, we first introduce web services and the concept of business interaction concerns. We then propose a process-oriented approach to the modelling of aspects deriving from crosscutting business concerns. We focus on the dynamic nature of web-service-basedsolutions, and the need for adaptive management of aspects. In particular, we propose a technique for the dynamic distribution of aspects across multiple web-service components. The technique is based on explicit definition of process roles.The proposed approach has been used to build experimental solutions involving dynamic reconfiguration of web-service system. We present an application example in the context of supply-chain integration that was prototyped using the DySCo platform (Dynamic e-ServiceComposer).