一种分布式地理元数据同步机制

罗显刚; 丰荣祥; 谢忠

doi:10.3799/dqkx.2010.051

一种分布式地理元数据同步机制

doi: 10.3799/dqkx.2010.051

罗显刚^{1, 2,},
丰荣祥^{1, 2},
谢忠^{1, 2}

1.
中国地质大学信息工程学院，湖北武汉 430074
2.
武汉中地数码科技有限公司，湖北武汉 430074

基金项目:

国家重点“863”项目 2009AA12Z211

国家重点“863”项目 2007AA120503

中央高校基本科研业务费专项资金 CUGL090235

详细信息

作者简介:
罗显刚(1980－)，男，硕士，主要从事数字制图与地理信息系统、WebGIS和网络三维研究.E-mail: billlxg@126.com

中图分类号: TP393
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- 被引次数: 0
出版历程
- 收稿日期: 2010-01-15
- 刊出日期: 2010-05-01

A Synchronization Mechanism of Distributed Geographic Metadata

LUO Xian-gang^{1, 2
,},
FENG Rong-xiang^{1, 2},
XIE Zhong^{1, 2}

1.
Faculty of Information Engineering, China University of Geosciences, Wuhan 430074, China
2.
Wuhan Zondycyber Co., Ltd., Wuhan 430074, China

摘要

摘要: 在分布式环境中，各个结点通常需要共享使用其他结点的地理元数据.为了能够实现结点间地理元数据的相互共享，又能够保证每个结点具有较高的独立性与自治性，基于“国土资源信息集成与共享平台机制”项目，自行设计消息队列，提出了一种基于XML (extensible markup language) Web服务的数据同步机制.通过该同步机制，弱化了中心和结点的概念，实现了物理结构模式下无中心的架构，使得各个结点之间能够主动进行数据同步共享，存储同一数据的不同副本，从而较好地达到了数据同步的目标.
- 元数据 /
- 数据同步 /
- 消息队列 /
- XML Web服务
Abstract: In the distributed environment, each node usually has to share the geographic metadata of other nodes. In order to achieve the target and ensure high independence and autonomy of each node, based on "Information integration and sharing of land resources platform mechanism" project and special message queue designed, we launch a data synchronization mechanism based on XML Web Service. Through the synchronization mechanism, it weakens the concept of center and nodes, achieves non-center structure under the physical structure and makes each node share data actively and store different copies of the same data, achieving the target of geographic metadata in a better way.
- metadata /
- data synchronization /
- message queue /
- XML Web Services

HTML全文

图 1 分布式地理元数据同步体系结构

Fig. 1. Synchronization system structure of distributed geographic metadata

下载: 全尺寸图片幻灯片

图 2 分布式地理元数据同步机制流程

Fig. 2. Synchronization mechanism of distributed geographic metadata

下载: 全尺寸图片幻灯片

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