当前工作流管理系统发展的瓶颈问题是其缺乏支持动态变化、不具有动态修改能力及自适应性.引入分布式数据管理语言作为工作流模型定义语言,来创建能够动态修改的工作流模型.设计并实现了一个动态自适应工作流引擎,该引擎在工作流执行过程中能够动态修改过程模型,允许对流程中的未执行节点进行动态的增加、删除和修改,给出了流程动态修改策略及自适应算法,解决工作流动态变化带来的正确性、一致性和自适应性的问题.%Lack of dynamic change support,the dynamic modification ability and adaptation has become the current develop-ment bottleneck for the workflow management system. Therefore,the Active XML(distributed data management language)was taken as a workflow model definition language to create a workflow model supporting dynamic modification. A dynamic and adap-tive workflow engine was designed and implemented,which can not only dynamically modify the process model in the workflow execution,but also allow it to add,delete and modify the non-execution nodes dynamically. The dynamic modification strategy in flow path and adaptive algorithm are presented to solve the problems of correctness,consistency and adaptability caused by the dynamic change of workflow.
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