Research And Design On Workflow Engine Based On Lightweight J2EE

Workflow management system is a tool to realize computer support collaboration work, and can realize the management of workflow entirely or partially automatically. It not only benefits to the standardization of work, but also is convenient for reasonable disposition of personnel and resource, the supervision, examination of workflow to improve working efficiency. Workflow engine is the core of workflow management system and the key to realize a workflow management system. It has drawn on extensive attention by the research institutions and industry fields.This article firstly introduces the development of the workflow technology, the research present situation as well as some relevant background, then introduces the concept and the architecture of the workflow management system, which workflow management coalition puts forward, besides introduces the workflow reference model. Secondly, it introduces J2EE relevant technology which can realize the workflow engine, including more popular spring framework, hibernate framework and many design patterns which are often used in the project.This article analyses the design goals and main functions of the workflow engine, describes the basic process definition meta-model, the conversion of process and activity and the running model of workflow. Afterwards, it brings forward a architecture of the workflow engine based on lightweight J2EE framework, and use the spring and hibernate framework as the structure of the engine, designs the functions of workflow engine and realizes them. In the same time, it puts forward the realization of the key technology. Finally, a simple workflow management system is realized by the engine.