Joo Hyun Han , Yong Yoon Cho , Jae Young Choi

The KIPS Transactions:PartA, Vol. 12, No. 6, pp. 485-492, Dec. 2005
10.3745/KIPSTA.2005.12.6.485,   PDF Download:

Abstract

Currently workflows in business processes and distributed computing environments have provided service automation by connecting many tasks with rules and/or orderings. The services in ubiquitous computing environments have to automatically provide users with adaptive services according to dynamically changing context information, which is obtained from both the users and their environment. To adapt these workflows to ubiquitous computing, we must specify the situation information on their transition conditions. In this paper, we propose uWDL, Ubiquitous Workflow Description Language, based on Web Services to use the situation information on the transition constraints of workflow's services. uWDL can select adaptive services according to contexts, profiles, and events information, which are situation information. Furthermore, we verified the execution of a scenario document described with uWDL using the parser and the context handler for uWDL. The scenario developers can use the uWDL scenario editor for a design of scenarios, and they can easily specify the transition conditon of the services according the situation information of ubiquitous environments using the uWDL.

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