支持状态机建模的工作流引擎研究

摘要

为了能清晰地描述存在较多审批环节和步骤跳转的业务流程,提出利用状态机为流程建模的方法.通过改进传统的关系结构工作流引擎,给出一个支持状态机建模的关系结构工作流引擎的设计方案,详细介绍该引擎的设计原理和实现柔性方法.最后通过一个示例,演示支持状态机建模的工作流引擎的工作机制和实例迁移的过程.原型已经应用到高校学费管理系统中.实践证明,该引擎可以有效地支持状态机建模,并缩短关键业务的开发周期.%In order to describe the business processes composed of lots of approval procedures and jump steps clearly, a method of FSM modeling is proposed. By improving the traditional relation-based workflow engine, an approach to workflow engine supporting FSM modeling is proposed. The principle to design and the implementation of a flexible workflow system are described respectively. Finally, application examples are introduced to illustrate the working mechanism of workflow engine and the process of task instances migration in workflow. A prototype of this workflow engine has been applied to a project about the students' tuition management system, which shows this workflow engine can support FSM modeling effectively and shorten the cycle of the development critical business applications.