基于UML工作流建模的意外处理

Exception treatment in UML-based modeling for the workflow management system

为了促进并完善基于UML工作流技术在建模领域的应用与发展,本文通过对UML建模与意外处理的基本概念进行分析,并结合一个具体的应用实例进行研究,提出了针对产生于工作流系统的执行阶段、未在系统建模阶段描述和定义的突发事件等意外事件的处理方法．

The workflow model is the abstract demonstration of workflow as well as the managing process. Because workflow must be run in computers, it is necessary to set up a suitable worldlow model. Unified Modeling Language （UML） is a well-defined, easy-to-express, strong-functioned and well-suitable visual modeling language. Workflow exceptions mean the unusual affairs, which happen in the stage of executing the workflow management system rather than defined or described in the stage of modeling. The processing of the exceptions is called exception treatment. Traditional workflow modeling process has some limitations on diffeint levels of supporting the undefined operation and exception treatment, so the way to deal with the exceptions in the worldlow management system has a significant meaning. In this paper, we discussed the exception treatment in UML-based modeling.