Research On The Execution Of Web Service Composition Model Described By CA-CCML

With the development of Internet technology in various fields, Web service has developed rapidly in terms of various applications relying on its great advantages of language and platform independence, protocol standardization as well as loose coupling of heterogeneous applications. However, a single Web service can’t satisfy the complex business requirements because of its limited function, so providing Web service composition with strong functions and quality assurance has become a focus of current research. At present, many Web service composition languages based on business process and modeling tools based on those languages have been proposed. The Web service composition model constructed by modeling tools can not only help users get a large amount of information in a short time, but also greatly improve Web service composition efficiency. But the execution of Web service composition model, that is to say, how to make the obtained Web service composition model execute, still needs further study.On the basis of analyzing and researching the related technologies and theories of Web service and Web service composition, this paper does a deep research on execution of Web service composition visual model and text model. Firstly, the CA-CCML (Context-aware Cooperative Composition Modeling Language) proposed by research group is introduced, and based on visual Web service composition editor of CCML (Cooperative Composition Modeling Language) the visual Web service composition editor of CA-CCML is implemented. Next, the execution of the Web service composition visual model which is constructed by this editor is researched deeply, and the execution framework, execution algorithm and concrete execution realization of the visual model are given. At the same time, the execution of Web service composition text model described using CA-CCML is also researched, including the transformation from visual model to text model, the execution framework, execution algorithm and concrete execution realization of the text model. Finally, the research results are integrated into the visual Web service composition editor of CA-CCML, the visual Web service composition tool of CA-CCML is built, and the feasibility and validity of Web service composition model execution method given in this paper is verified by a concrete application case in this paper.