Research On The Key Techniques Of The Online Workflow System And Its Implementation

With the increasing complexity of business processes, as the core technology of a process definition, management and monitoring, workflow technology has been widely used. A complete workflow management system should cover the process and task definition, integrity verification of the process definition, process definition and implementation of the process and tasks. In this paper for lack of enterprise application environment visualization and universal support for the existing workflow management system, research and explore the key to the online workflow management system technology, and on this basis to achieve a high degree of a visual, easy-to-use online workflow management, uses MySQL as its back-end database, and use VML to achieve its visual operation function. The main contents of this paper are as follows:First, research Workflow process definition and automatic data storage technology. On the basis of the comparative study, research and study methods based on the process which defined in the directed graph. Each task in the process uses a rectangle to represent, and precedence relations between tasks use the line segment to represent. This definition of the process is conducive to the creation process of visualization, and it helps to automatically save the process definition data. At the same time of studying methods of process definition, the paper studies deeply to the process definition of integrity verification strategy. Give the steps of using truth table to verify the integrity of the process definition. And verification strategies for issues such as deadlock. Lay the foundation for the implementation of the process.Second, using automata theory to control task execution mechanism. Take into account each task in a process starting from the definition of the end of execution can be the use of state to represent, and status of the task change is in order, this can just use automata theory to control.Finally, based on the above studies, design and implement a web-based workflow management system webFlow. The visualization capabilities of the system is using VML to achieve, and dynamic data storage capabilities is the use of Ajax technology. This paper will makes a detail describes to the webFlow system implementation strategy, and gives the direction of future research.