An ERP Components Assembling System Based On Reflection Mechanism

Software industrializing brings out the concept of component, which combines some software to work together as a whole system, just as the hardware system. The component technology can meet the requirements of different fields, However, another problem is raised, how to establish the component library system and offer effectively organeze and manage of components? At present, although some progress in the component library system is attended, some aspects still need to be improved. For example, it still can not meet the requirements in terms of generalization, capability, security and scientifically management.Basing on the original theory, combing the modern ERP system and its special requirement, the thesis introduces some improvement on the theory and technology of component library and a more general reliable technology and method to implement it.In terms of component assembly, thesis extends collaboration model betreen components based on message bus and reflection. The model supports two communication mode, publish/subscribe and point to point. Based on the model, ERP component library system can improve the original component library system to meet the shortage of lacking operation record in information feedback, so as to better offer precise and real component feedback information for the component library system users.This article is divided into three main parts. The first part of introduces the relevant concept,model and language of components. The second part introduces EPR components and component-library , it starts to introduce the EPR component-model, and then it mainly introduces the management of component-library, such as how to put components into library, and how to query components or delete components and so on. The third part introduce the assembling methods of components. It starts to introduce the method to assemble components based on reflection, and then introduce the process to assemble components with a instance model. The purpose and significance of this article is to put the concept of reflection into the assembling methods of components. It takes advantage of the idea of active service to increase the reusement of software and shorten the period to develop a system. Finally, this article uses a instance model to confirm that it is right to use the method based on reflection to assemble components. Besides,it provides the support of further study of active service.