| Web Services as a new distributed computing model, with openness, platform independence, loose coupling and reusability, etc., plays a more and more important role in areas of enterprise application integration. However, a single Web Service can no longer meet the increasingly complex and ever-changing business requirements. Therefore, the reuse of services and compose them through the manageable way to produce new applications to meet the dynamic needs of enterprises is an essential requirement. As a new technology to solve this problem, Web service composition has become the focus of the study and the hot spots of Industry and academia.This paper studied the technical features of existing Web service composition technology and analyzed the existing portfolio of Web Service system. This paper also studied the features of BPEL language at Web service composition area, proposed a Web service composition tool named BPEL Editor based on BPEL language. We can compose single Web Service to complex business processes by using this tool. The tool provides a visual environment and Edit Wizard for creating and editing business processes. In addition, this tool also realized the static analysis and debugging functions. BPEL Editor has practical functions that can meet the requirements of dynamically changing business needs to the flexibility and efficiency of Web service composition.The System design is based on EMF and GEF framework of Eclipse platform. In this paper, the design ideas and the overall framework in the system design and implementation are described, the function modules demands and the design details of functional modules are described as well. A BPEL modeling method is proposed. This paper also presented implementation detail of process establishment function, and presented the implementation process of process establishment function by example. In the user interface the implementation aspect, the user interface design models and system implementation view are also described. |
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