基于关键路径的工作流时间异常处理算法

A Critical-Path-Based Approach to Handling Time Exceptions in Workflows

为了更好地管理业务流程中的时间异常,定义了时间异常系数,描述了不同时间约束异常之间的相互影响,并提出一种基于关键路径的工作流时间异常处理方法。在实例执行阶段,实时监控每个节点的状态,当出现时间约束违反时,根据异常系数决定是否触发异常处理程序以及如何处理。该方法能够在某一时间异常发生后,预测可能出现的关联时间异常并排除,确保工作流实例状态的一致性。

To better manage the time exceptions in business process,time exception coefficient is defined and the inter-action among the different time constraints exceptions are described.Then a noveI approach based on the criticaI path is proposed for handling time exceptions.In run time,if a time constraint is vioIated,the approach is abIe to determine whether to trigger the exception handIer and how to deaI with according to the situations.This approach can predict correlative time exceptions due to some time constraints vioIation and eIiminate them to regain a consistent state of the workfIow instance.