Study on Dynamic-Workflow Oriented Web Service Composition Model
Hao Jiang · Computer Technology and Development · 2008
Combined with workflow,the Web services are assigned as the tasks in the workflow process.A dynamic-workflow oriented service composition model is established according to the dynamic composition technology.The description to the Web service is expanded,a hierarchy-based service discovery model is proposed.This model also supports the separation of exploration and disposition.The service evaluation function is introduced to the usable server by dynamic lookup of the Web service.The server is evaluated according to the service share of the server and the price strategy and the trust level in order to realize the dynamic disposition and binding of the combined service when running.Finally,the execution frame of the dynamic binding to the Web service is realized by the engine of the workflow which controls the interaction and the accomplishment of the subtask.