关键词: 轻量级, 工作流管理系统, 时间约束, 条件化基于角色的访问控制, 工作流引擎

Abstract: Workflow management proposed a new solution to the problem of control, monitor, optimization and support of business processes. Following the Workflow Management Coalition (WfMC) reference model, a web-based lightweight workflow management system named as WBLW（web-based lightweight wfms） was developed. The framework of WBLW was proposed based on J2EE(Java to enterprise edition). The workflow theory model expressed in formalization was discussed in detail. In order to improve the time management capability of the workflow management system, a time constraint directed graph model was put forward. In addition, in order to express complicated secure access control constraint, a conditioned Role-based Access Control (RBAC) method based on Public Key Infrastructure (PKI) technology was presented based on the dynamic role allocation method. Finally, the workflow engine driven algorithms for the workflow application of WBLW were provided. Through the actual inspection and users feedbacks, the application system that adopted WBLW as the framework could dramatically shorten the development cycle of the process information application system and improved the users efficiency.

Key words: lightweight, workflow management system, time constraint, conditioned RBAC