Design of an Exception Handing Algorithm of Workflow

The popularization of the Internet/Intranet applications and the development of Web technology provide a perfect foundation for the realization of the Web-based workflow management systems, It has been primary characteristic of new-style workflow management system that the Web technology is adopted. Demanded to work normally in general status, the system furthermore must have capability in handling all kinds of exceptions flexibly. The unexpected exceptions should be altered to a expected exception so that to be handled conveniently for the workflowpsilas finishing in normal ways although with exceptions. In order to enhance the performance of exception handling algorithm in workflow, a searching algorithm of exception handling in workflow with low time complexity and low space complexity is designed. The algorithm can add new handling rule into exception handing base and filter old rule to discard in rule base so that the performance and efficiency of exception handing can be enhanced.