| 动态服务聚合流程定义元模型及其应用 |
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| 引用本文： | 李国中,刘书雷,吴秋云,景宁.动态服务聚合流程定义元模型及其应用[J].计算机科学,2007,34(2):91-94. |
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| 作者姓名： | 李国中 刘书雷 吴秋云 景宁 |
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| 作者单位： | 1. 中国电子科技集团公司第十五研究所,北京,100083
2. 国防科技大学电子科学与工程学院,长沙,410073 |
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| 基金项目： | 国家自然科学基金
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高等学校博士学科点专项科研项目 |
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| 摘 要： | 适应Web服务的动态变化性是流程驱动的服务聚合研究的一个重要内容，传统的工作流建模思想必须加以改进以适应这一新的应用需求。本文引入了服务结点和服务群的概念，从服务聚合的过程维和资源维出发定义了服务聚合流程定义元模型。在此基础上，基于扩展的工作流网提出了一种新的服务聚合流程／资源描述模型WSCP／R-net，有效解决了现有的基于基本工作流网的服务聚合建模技术所不能解决的不确定路径选择和服务的动态变化性问题。文章以城市危机应急处理的Web服务流程构建为例说明了WSCP／R-net应用的有效性和可行性。
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| 关 键 词： | 动态服务聚合 流程建模 流程定义元模型 扩展工作流网 WSCP／R-net |
A Dynamic Web Service Composition Process Definition Meta-Model and its Application |
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| LI Guo-Zhong,LIU Shu-Lei,WU Qing-Yun,JING Ning.A Dynamic Web Service Composition Process Definition Meta-Model and its Application[J].Computer Science,2007,34(2):91-94. |
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| Authors: | LI Guo-Zhong LIU Shu-Lei WU Qing-Yun JING Ning |
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| Affiliation: | 1.No. 15 Research institute, Electronics Technology Group Corporation of China, Beijing 100083;2.College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073 |
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| Abstract: | One of important issues of process-driven dynamic Web Services composition is supporting dynamic variation of Web Services.To satisfy this request the designing model of traditional workflow must be improved.This paper proposes the concept of SN and SG to adapt to the dynamic variation of Web Services,and proposes a meta-model of Web Services composition process definition to satisfy the need of dynamic Web Services composition process modeling.According to the meta-model,a new Web Services Composition Process/Resource model(WSCP/R-net)is proposed based on extended Workflow-net.WSCP/R-net effectively resolves the problems on uncertain activity option and dynamic variation of service in process model.The application of WSCP/R-net in Web service composition process modeling is illustrated in city emergency disposal project. |
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| Keywords: | Dynamic Web services composition Process modeling Process definition meta-model Extended workflow-net WSCP/R-net |
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