Research And Development Of Workflow Platform Based On Web Services

Business processes play important roles in enterprise's management, for there are various business processes in modern production and management activities. Now workflow has been widely deployed in many enterprises to manage their business processes as a key technology of process definition, management and monitoring. As businesses continue to increase, the current workflow system can not meet the application requirements. Some highlights issues , such as high degree of coupling of the process node, reusability poor of the process model, difficult to collaborative etc, become very complex .this issues became the issues that the enterprise must face but very difficult to solve.Against the above problem, on the basic of web service architectures, we propose web service based workflow management, which is advanced in loose-couple, Rapid reuse, high integration ability, etc.At first, a systematic survey of Workflow research is given, and then the study objectives of this thesis are presented. Secondly we fully introduce the brand-new distributed architecture--Web Service. Web services make the application can seamless integration on the Web, but do not have to consider programming language and operating environment. Workflow based on Web services can across the border of technology and enterprise to build the business processes model, which is the defect of the vast majority of workflow system.Then advance Web service-oriented work model—JMWFMS, design hardware topology and system architecture .A formal description and verification rule of JMWFMS is given, and a method to save, read and parse model based on XML is designed .Based on researched the present status and characteristic of the long transaction model in workflow system, against the Sagas model does not support portion Rollback, raised a long transaction workflow model based on task dependent information.In the end ,based on researched the present status and user needs of the road project management, according to the actual situation of road project, designed and implemented road project construct manage system based on JMWFMS model. JMWFMS make the system easy to collaborative; improve the reusable ability of the model, also shortened the development time.