摘要
提出了用UML活动图描述工作流异常处理的方法。根据工作流系统特点,对UML活动图作适当扩展,为扩展后的活动图定义了的形式化语句,通过实现一个RCT步来描述一个潜在发生的异常状况,并对不同处理策略下的处理过程进行了描述。结果使得UML活动图适合描述含有异常的工作流系统;由于是采用了UML建模语言,编码实现更容易。
The approach to present the exception handing with activity diagram is put forward in workflow system. According to the characteristic of the workflow system, a formal semantic of extending UML activity diagram is defined. Through the transferred condition to implement a RCT step, a potential exception is presented, and the handling procedures are described under different strategies. As a result, UML activity diagram fits preferably for presentation of exception handing in workflow system, and the coding of workflow system is implement easily because of the UML modeling language.
出处
《计算机工程与设计》
CSCD
北大核心
2007年第18期4576-4578,共3页
Computer Engineering and Design
关键词
工作流
统一建模语言
活动图
可视化
异常处理
workflow
unified modeling language
activity diagram
visualization
exception handing
