工作流参考模型第3接口的应用研究

Research on implement of interface 3 in workflow reference mode

第3接口是国际工作流管理联盟(WFMC)提出的工作流参考模型中,系统与外部组件通信的接口,在WFMC的说明文档中,不是工作流管理系统必须实现的功能,一个工作流系统缺乏对第3接口的支持,则缺乏一定的可用性。分析了外部组件的多样性导致第3接口的实现障碍,基于Java技术,提出了第3接口的两种实现方式,并比较其优缺点,提出了基于这两种方式的综合实现方案。

The interface 3 is a part of workflow API in workflow reference model that is defined by workflow management coalition（WfMC）. The interface 3 defines an interface mechanism between workflow management systems and any other application, but it,however, differentiates itself from the other coalition interface definitions. Invoking an application is not a workflow specific functionality,but a workflow system would not make much sense without this functionality. At first, the difficulties of implementing the interface 3 were descussed that brought about by the variability and unpredictablity of the invoked application. Second, the two modes in the interface implement were put forward based on java technology and their advantages and disadvantages were analyzad. In the end, a synthetical implement framework was brought forward by integrating the two modes.