摘要
动态配置是指在软件系统运行时动态地改变系统的配置项。基于构件的软件系统配置项涉及系统的构件组成、构件间的连接关系和构件的物理分布。根据支持软件系统动态配置的反射体系结构，建立了动态配置模型，分析了动态配置模型的构成要素，定义了动态配置模型的元数据，以保障运行时系统一致性为基础，构造了动态配置模型的元协议。最后，通过实例，分析了所提出的动态配置机制在水利信息系统软件功能动态配置中的应用。实践表明，基于反射的系统动态配置模型及其实现机制，能在水利信息系统中有效应用，为解决水利信息系统的资源动态配置、支持动态需求等问题，提供了可行的技术方案。
Dynamic reconfiguration refers to the change of a software system＇ s configuration items when the system is running. The configuration items of a software system based components consist of the instantiation and bindings of software components as well as the allocation of components to hardware systems. According to the reflecting architecture of dynamic reeonfiguration systems, this thesis puts forward a reflection based dynamic reconfiguration model and analyzes its composing elements. The metadata of dynamic reconfiguration model are defined and based on the analysis of system consistency, the meta-protocol are also structured. Its application in water information system shows that reflection based dynamic reconfiguration model and mechanism can be effectively used to offer feasible technical scheme for solving problems of resources dynamic reconfiguration and support for dynamic needs of water information system.
作者
陈雅莉
艾萍
姚成霞
CHEN Yali, AI Ping, YAO Chengxia （1. Bureau of Hydrology, Yangtze River Water Resources Committee, MWR, PRC,Wuhan 430010, China; 2. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai Univ., Nanjing 210098, China; 3. College of Hydrology and Water Resources Hohai Univ., Nanjing 210098, China）
出处
《水利信息化》
2010年第3期23-27,40,共6页
Water Resources Informatization
基金
国家自然科学基金重大研究计划培育项目（90924027）
863项目（2006AA01A126）
948项目（200717）
教育部科学技术研究重点（重大）项目（107056）
关键词
动态配置
机制
构件
系统一致性
水利信息系统
dynamic reconfiguration
mechanism
component
system consistency
water information system
software system
