Research Of Workflow Key Technology Based On Active XML

With the development of Internet and the increasing of computer application requirement in enterprise, now Workflow has been widely deployed in many enterprises to manage their business processes as a key technology of process definition, management and monitoring. Workflow Management System (WFMS) are most used in every process to manage enterprise business combined with enterprise Business Process Reengineering(BPR) and carries out automation of enterprise process.Workflow engine, the most important part of Workflow Management System, Come it to push forward the process implementation according to Workflow process models defined by modeling tools. And it also assigns tasks rightly according to everyone's role to enable high work efficiency.On basic of analyzing the self problem (for example, no uniform modeling language, no independent wokflow model etc) of existed Workflow and the limitation of factual application (for example, unperfect ability of integration and mutual operation, lack of the support of distributed technique capability evaluation and simulation etc), In this article, we discuss the design of distributed Workflow engine and technology of implementation based on new technique of AXML( Active XML) and Web Services.Firstly, a systematic survey of Workflow Management research is given and then the study contents and objectives of this thesis are presented.Secondly, Introduce the basis of distributing Workflow technology, analyse the limitation of distributed technique (DCOM, CORBA, Java RMI), proposing Workflow based on Web services, which could be is adapted to present environment, and make the enterprise computer application not only to span technique, but also to span enterprise . At the same time, carry out the details introduction on each ingredient of the Workflow Management System.Thirdly, According to the analysis of the current Workflow engine, this paper introduces Active XML which is defined as a distributed language for management of data, proposes a framework of distributed Workflow engine based on the Active XML , design the Workflow engine, and gives out the detailed elaboration every core module in the Workflow engine.Finally, we implement Workflow engine, in Microsoft Visual Studio.NET 2003 with C #. The application of Workflow engine can realize calling Web Services which are development integrated and dynamic renewed timely. Analyses the Workflow engine application, and carry out the performance test with the safe producing management system (SPMS) that is developed by the electric power bureau in some city.