Research On Web Services Composition Modeling And Develop Method Based On BPEL And CCML

The small granularity of single Web service limits the application scope,so it can not satisfy the application requirement in fact.Web services composition can solve this problem.The transition from requirement model to executable codes by traditional development approach of Web services composition is difficult to adapt to some problems of implementation,modification of user requirements and change of implemental platforms.A new idea based on MDA is proposed to implement Web services composition modeling and development,and then a development approach of Web services composition based on BPEL and CCML is given.This dissertation is supported by the National Natural Science Foundation of China, and the development approach of Web services composition based on BPEL and CCML is researched in it.Achievements of model transformation technologies at home and abroad are analyzed.The relevant knowledge to MDA,Web services and Web services composition are introduced.According to comparing with the traditional development approach of Web services composition,the necessity and significance of using MDA to guidance the Web services composition are described.The syntax and basic structure of BPEL and CCML are introduced in detail and a development approach of Web services composition is presented based on BPEL,CCML and model transformation technologies.Transition rules from UML to BPEL and CCML are designed and realized in an employee business trip system.A development approach of Web services composition is presented based on BPEL and CCML.The design model concept is introduced according to requirement and executable codes.Two transitions are created between above three phases.This approach solves the problem that it's difficult to implement in traditional Web services composition development approaches.The development efficiency is improved and portability of the platform is enhanced by this approach.The dynamic changes on Web services composition language can be adapted well.The approach of Web services composition modeling and developing presented in this dissertation has definite theoretical and application value as guidance to Web services composition development.