The Research And Implementation Of Multidimensional Service Composition Meachnism For Mobile Environment

Along with the development of wireless network and mobile terminal equipment, mobile business has been popularized. More and more customers use mobile equipment to enjoy mobile business. As the promotion of wireless network band and terminal equipment intelligence, customers can enjoy very abundant mobile businesses. Meanwhile, customers have more requirements about mobile business. They expect to use more novel and personalized mobile businesses."Multidimensional Service Framework for Mobile Environment" is a mobile business framework to fulfill these new requirements. In this framework, service composition is a key technology which can fulfill the requirements of new mobile businesses development and deployment. Service composition technology can use well-defined standard service interfaces to combine existed services into a new mobile business according to certain business logic, terminal context information, and customer profile. This combination does not need to change any implementation details of existed services.The correlative background technologies, including Web service technologies, Service oriented architecture, Service composition technologies and mobile business specifications, are discussed, especially Business execution language and Service component architecture are analyzed.A novel service composition mechanism for mobile environment is proposed. The key concept "component" and "composite" are defined. In this mechanism, software modules both in client and server are organized in the form of component. Software modules' functions are encapsulated in components and exposed as services. New mobile businesses are implemented by combining existed services into composed services.Based on the mechanism, the thesis introduces how to design a mobile business named Travel Guide, and implement the business functions in the server side. Travel Guide is composed of six sub-businesses. Requirements of each sub-business are analyzed. Software modules of Travel Guide are divided into components and composites according to its functions. The detail design of each component and composite are shown, including function description, interface definition, MSC (Message Sequence Chart) and business process paragraph.And then, to validate the mechanism, test aims, test cases and results are described. Analyses are given based on the result.Finally, a conclusion is dedicated. The existing problem and future work are concluded.