摘要： 讨论了工作流引擎处理过程中的相关活动实例的上下文控制机制后,揭示了工作流内在的事务特性,以保证这种内在事务为基准,提出了工作流运行过程中异常处理的控制方法和不同处理策略下的异常恢复规则,保证了异常发生时,异常处理程序和工作流引擎的顺利交接,从而保证了流程发生变化时执行的持续性。

关键词: 计算机支持的协同工作, 工作流管理系统, 异常处理

Abstract: After discussing the control mechanism in workflow engine while processing an activity instance, the paper presents the innertransaction property existing between the preceding instance and the succeeding activity instance when the process is in process. Based on thistransaction property, a method to handle exceptions and the related workflow recovery rules are proposed. All these can be used to guarantee thehandover smoothly between workflow exceptions handler and workflow engine. Consequently the process continuance is guaranteed when processchange or exceptions occur.

中图分类号: 

• TP315