节点文献

Web服务组合重配置方法研究

Research on Method of Web Service Composition Reconfiguration

【作者】 翟华伟

【导师】 张维石;

【作者基本信息】 大连海事大学 , 计算机软件与理论, 2007, 硕士

【摘要】 Web服务组合重配置是当前服务组合及应用研究的热点问题之一。越来越多的企业开始在网络业务中使用Web服务组合,企业现有的服务组合很难满足应用环境以及业务过程等变化要求,阻碍了Web服务组合应用的进一步推广。本文提出的Web服务组合重配置方法,使企业能够针对实际需求,灵活地对服务组合进行调整,是解决服务组合适应实际应用变化问题的重要途径。 本论文主要围绕Web服务组合重配置方法进行研究。通过分析相关研究成果,总结出Web服务组合重配置的起因、分类和必要的操作过程。本文以某旅行社的业务过程为例,详细讨论了Web服务组合重配置方法的主要研究内容,包括Web服务选择方法、Web服务可替换性验证方法以及重配置操作方法等。针对Web服务组合重配置特性,提出了一个基于质量属性的Web服务选择方法——投影法,该方法可以根据使用服务的具体环境,更改参与评测的质量属性类型。论文还使用进程代数CCS对旅行社业务模型进行形式化描述,给出了使用工具CWB-NC验证服务之间可替换性的具体方法。在此基础上,本论文给出了一个基于服务注册中心的动态重配置操作方法的设计与实现。最后,总结了所做的主要工作和下一阶段的研究内容。 本论文的研究目的和意义在于,通过对Web服务组合重配置方法的研究,实现了一个相对完整的Web服务组合重配置过程。降低了企业对Web服务组合的维护成本,使企业能够针对业务过程的变化,快速灵活地对Web服务组合进行调整。对完善Web服务理论、推广Web服务应用具有积极作用。

【Abstract】 Web service composition reconfiguration is one of the hot points in application researches. Many enterprises start to use compositions in network businesses, the compositions used by enterprise can’t satisfy changes of application demands, which block up extending of composition uses. Methods of composition reconfiguration make enterprises adjust compositions flexible according to demands. It is an important way to solve problems that the composition comforts the practical applications.This thesis mainly discusses the methods of Web service composition reconfiguration. Following relate study results, the reasons which lead reconfiguration, sorts and necessary operational process are summarized. Using an example of a travel agency’s business process, the main contents of Web service reconfiguration methods are discussed, including the methods of Web services selection, verification of Web services substitutability and operation of reconfiguration. The Web service selection method is based on quality properties which can be changed depending on demands of using environments. The paper uses CCS to describe the travel agency’s business process model, and gives a method on how to verify the substitutability of Web services using tool CWB-NC. Based on these researches, the thesis gives a design and implementation of Web service composition dynamic reconfiguration. At last, we makea conclusion, summarize the main research activities and discuss the future work.Being main contribution of this research, a relatively integrated of Web service composition reconfiguration process is implemented. The reconfiguration reduces the cost of the maintenance. Enterprises could adjust the composition quickly and flexibility to adapt the change of the business process. The studies have active effects on recruiting the theory and extending the application bound of Web services.

  • 【分类号】TP393.09
  • 【下载频次】170
节点文献中: 

本文链接的文献网络图示:

本文的引文网络