Based On The J2ee Workflow Engine Design And Realization

Workflow management system is a tool to realize Computer Suppot Collaboration Work,it can realize the management of workflow entirly or partially automatically. It can make workflow by specification,to realize computer assistant control.Not only to benefit the standardization of work, but also convenient for the reasonable disposition of personnel and resource, the supervision, examination of workflow to improve working efficiency.Workflow engine is the kernel of the WfMS. It interprets the process description and controls the instantiation of processes and sequencing of activities, adding work items to the user work lists and invoking application tools as necessary. Workflow enactment service include one or more wrokflow engines, they work together to execute work flows.This paper supposed a workflow engine model aimed to the electronic government which referenced WfMC specification, it' s expressed by state diagram. It' s XPDL was designed. The soundness of workflow model was analyzed by WF-Net. The organization and resource management model was designed, and developed a set of workflow engine based on the RDBMS, The relational database about object-oriented model ,data persistent transaction processing and were analyzed in detail, process parser, process navigator, workitem manager, tool agent etc. were implemented implement, used the popular J2EE architecture, offered a series of APIs ,can integrate with other system conveniently. Application developer can embed this APIs to application systems thereby to implement information system with work flow character rapidly, this can shorten the development period of key business remarkably.