一种基于工作流类型版本和实例迁移的动态修改方法

Dynamic Workflow Schema Evolution Based on Workflow Type Versioning and Workflow Migration

工作流管理系统中一项重要而未解决的问题是工作流模式的动态修改,比如,在保证模式正确的前提下,创建、删除和修改工作流类型。在修改工作流类型时,如果工作流实例是活动的,则这个问题就变得尤其严重,因为任何工作流实例必须符合其工作流类型的定义。本文中提出了一种基于工作流类型版本和工作流实例迁移的动态工作流模式修改方法。

An important yet open problem in workflow management is the evolution of workflow schemas,i, e. ,the creation, deletion and modification of workflow type in such a way that the schema remains correct. This problem is aggravated when instance of modified workflow types are active at the time of modification,because any workflow instance has to conform to the definition of its type. This presents a framework for dynamic workflow schema evolution that is based on workflow type versioning and workflow migration.