Zaiwen Feng, K. He, Yutao Ma, Rong Peng, Ping Gong
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A Requirements-Driven and Aspect-Oriented Approach for Evolution of Web Services Composition
Service-oriented software development emerges to be popular with the development of Internet and Web service.Web service offers agility and adaptability to rapid changes of users’ requirements. Goal models depict users’ desires in terms of goals, namely, why-to-do; BPEL provides means to describe web service composition using WS-BPEL2.0, namely, how-to-do. However, there exists a gap between changes of individualized requirements and web service composition in the meet-in-the-middle pattern. So, in the paper we proposed an aspect-oriented approach to support web service composition evolution triggered by requirements evolution. The approach elevates the abstraction level of evolution modeling for web service composition, namely, from business process level to strategic goal level. The result is to make business level person capable of taking part in evolution modeling at requirements phase.
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