Research On Context-aware Mobile Web Service Composition

The application of Web services on mobile devices is becoming more and more universal with the widely used mobile devices and their gradually enhancing functions. As an emerging Web application model and distributed application model, the mobile Web service can fundamentally solve the problems of resource sharing and mutual operation. However, the functions of a single mobile Web service are limited. In order to make full use of the shared mobile Web services, these Web services can be combined, which can provide more powerful service functions, and in the meantime can accelerate the speed of system development and reduce the development costs.In this paper, based on the analysis of the related domestic and foreign researches, the mobile Web service, mobile Web service composition, context-awareness and other related technologies are deeply researched. A Context-aware mobile Web service composition framework is presented and its execution process and implementation mechanism are introduced in detail. The Context-aware Cooperative Composition Modeling Language (CA-CCML) proposed by our research group is introduced and the general framework of CA-CCML Web service composition interpreter supporting Android mobile devices is presented. The main function modules including document parser, process execution manager, information interaction scheduler, service interaction APIs of this interpreter are implemented using Java language. The related context-awareness technologies including acquiring, classifying, storing and utilizing technologies of context in CA-CCML language are researched. Also, the construction and invocation of traditional mobile Web service and the RESTful mobile Web service are introduced. At last, the correctness and validity of the CA-CCML Web service composition interpreter supporting Android mobile services are verified through a concrete application case.The work in this paper has certain theoretical and practical application value in realizing context-aware mobile Web service composition.