基于智能客户端的工作流模型设计器

A Workflow Model Designer Based on Smart Client

工作流模型是工作流管理系统的基石。但目前缺少针对网络环境下支持偶尔连接和智能部署的轻量级模型设计器,同时针对模型的仿真评估也较薄弱。首先结合WfMC过程定义元模型,分析了基本的工作流模式,设计了相应的元模型符号,给出了工作流模型的关系模式;然后以微软的.NET框架为基础,提出了一个面向服务的体系结构,并利用C#、Web服务和GDI+等智能客户端的实现技术实现了一个针对基本工作流模式的图形化、支持偶尔连接和易部署的轻量级工作流模型设计器;最后给出了评价工作流模型性能好坏的关键性能指标,并给出了相关分析结果。

The workflow model is the basis of workflow management system. But currently, it lacks a lightweight workflow model designer for supporting occasional connection and intelligent deployment in network environment. First, the paper makes use of WfMC process definition model, analyzes the basic workflow patterns, designs a homologous meta- model symbol, and gives a database schema based on RDBMS. Then it takes the . NET framework of Microsoft as foundation, puts forward a service oriented architecture, and makes use of smart client technique such as C#, Web service and GDI ＋, resdizes a lightweight workflow model designer aimed at basic workflow patterns, to support graphical display, occasional link easily. Finally, it gives the key specifications for evaluating the model performance, and gives the results of analysis.