Research On E-Commerce Platform Based On MDA

MDA (model driven architecture) which is put forward by OMG(Object Management Group ) upgrades software development from code level to model level, and emphasizes the core for model in the entire process of developing software. In this process, the first step is to build up the platform independent model, and then to convert into a specific platform for concrete middle platform, then generate application program code. It realizes the separation of the business model and technology for the close coupling relation. It is a good way to e-commerce application framework based on MDA applied e-commerce system development process. It can solve the low efficiency of the development, poor management and transferability shortcomings. So it makes the system maintainability and scalability easier.In this paper, it is attempted to research a concrete realization scheme of J2EE three-layer structure as well as seven-layer application framework on e-commerce based on the research of base conception and technology on MDA. According to the structure of e-commerce application framework, the author tries to create the work process based on MDA and research on the model exchange in this process, so that we could make a definition on the transformation not only from the platform independent model to the platform specific model based on J2EE but also from the platform specific model to corresponding code model. Finally, some code snippet on ordering system can be realized after local testing and the user interface template can be designed based on velocity template.The main tasks and focus on the application framework is embodied in the user interface layer to the user interface model, work process layer to EJB model and database layer to the relation model, then to generate part of codes or to design the interface by the models.