工作的流活动多实例的调度控制.pdf

1000-9825/2005/16(03)0400 ©2005 Journal of Software 软 件 学 报 Vol.16, No.3 ∗ 工作流活动多实例的调度控制 1+ 2 孙瑞志 , 史美林 1( 中国农业大学 信息与电气工程学院,北京 100083) 2(清华大学 计算机科学与技术系,北京 100084) Schedule of Activity Instances in Workflow Management System SUN Rui-Zhi1+, SHI Mei-Lin2 1(College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China) 2(Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China) + Corresponding author: Phn: +86-10 Fax: +86-10 E-mail: sunrz@, Received 2003-10-24; Accepted 2004-11-15 Sun RZ, Shi ML. Schedule of activity instances in workflow management system. Journal of Software, 2005,16(3):400−406. DOI: 10.1360/jos160400 Abstract: Supporting multiple instances of one activity can enable workflow management system to be flexible on handling workflow process. When handling multiple instances the main problem is the schedule of instances. After analyzing the assignment and the join of multiple instances, this paper proposes the context of workflow activities and then formally describes the semantic of a multi-instance activity. Base on the formal presentation, the concept of Shell is proposed to control the assignment and submission of the multiple instances. The Shell can control the multiple instances to run synchronically and control the progress of workflow process according to the semantics of activities. The Shell gives a solution to schedule and control of activity multi-instances in workflow process. Key words: workflow; workflow management system; activity instances; Shell; synchronization 摘 要: 支持多实例的工作流管理系统为工作流过程处理带来极大的灵活性,活动多实例要解决的主要问题 之一是多实例的调度控制.在分析了多实例的分配和汇聚等问题之后,针对过程中活动间不同活动语义的上下 文,对活动多实例的活动属性进行了统一的形式描述,提