基于移动计算范型的迁移工作流研究

The Study of Migrating Workflow Based on the Mobile Computing Paradigm

迁移工作流是近年来工作流管理研究的一个新方向 ,但它缺乏明确的模型定义和迁移域管理机制 .该文针对上述问题 ,首先参照移动计算范型给出了迁移工作流的概念定义 ,然后提出了一个基于停靠站的迁移工作流管理系统结构 ,讨论了其中的停靠站和迁移实例组成、迁移域管理与迁移寻址方法、基于体系结构的迁移实例生命周期过程等 ,最后给出了一个实验例 .示例表明 ,该文提出的迁移工作流模型和迁移体系结构 ,概念清晰 ,易构造且易管理 .

The migrating workflow is a new direction within the workflow management area, but it lacks explicit definition and mechanism for migrating area management till now. Owing to the above reason, a definition of migrating workflow model adopted the mobile computing paradigm is first given by this paper, then a framework of migrating workflow system based on the dock which consists of an anchorage with a local network is proposed. Some key techniques about the migrating workflow system such as the construction of anchorage and migrating instance, the organization and management of migrating area, the path searching method and the lifetime of a migrating instance based on the framework, are also discussed here. Finally, we give an example to demonstrate that the definition is sound and the system is easy to construct and to manage.