An Object-Oriented Modeling Method for Workflow Applications
Based on the analysis of the workjlow applications, the modeling process of workflow applications is divided into four levels in this paper. They are Application level, Structure and information level, Execution control level, and Implementation level. An object-oriented model corresponding to the four-level modeling process is also given, expressed in UML. Event mechanism is employed in this paper to realize both the control and distribution mechanism in the logical modeling of workjlow applications, illustrated by an event meta-model consisting of four basic event classes. The event definition and notification mechanisms are separated fiom the event reaction objects, and also the definition of functions and the triggering mechanism of the functions are separated. This may facilitate the dynamic modijkation of the workjlow definitions and also facilitate the description of the distribution of workjlow applications.
版权说明：以下全部内容由王海洋上传于 2009年02月24日 14时52分13秒，版权归本人所有。