ECA Rule Based Dynamic Replanning for Cross Enterprise Workflow Management

• Main Authors: Dai-Rong Wu, 吳岱融
• Other Authors: Shiow-yang Wu
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/02010214872464090924

碩士 === 國立東華大學 === 資訊工程學系 === 94 === Web services have brought a new age for E-commerce applications with rise in internet. Enterprises can reorganize their inner resources into Web services based on service-oriented architecture in workflow environment. This leads to a new approach for cross-enterprise cooperation and operation. Dynamic workflow allow adding and removing node during execution time. But when unanticipated event occur during runtime, we usually rebuild whole workflow. An integrated solution for unanticipated event replanning is therefore in strong demand. Our paper propose a dynamic workflow replanning base on ECA Rule structure. This methor can automatic choice adapted alternative plan when error occur or new data incoming during workflow runtime. We use an XML-based modeling language, named AC-Diagram, as our Web services composition tool to automatically generate cross-enterprise workflows from visual diagrams. We design three alternative methor: activity substitute activity, subflow substitute activity and subflow substitute subdiagram. The activity or subflow is substitutable according to semantic and I/O workitem compatible with error activity. In order to recover the semantic compatible but I/O workitem not compatible, we define a dynamic replanning algorithm to solve this problem. Therefore we can increase practicability of our alternative methor and ensure workflow executing automatically. Experimentation results demonstrate that our approach can effectively solve error during runtime and replan workflow without giving up any information.