一种基于目录服务的分布式空间元数据检索方法

摘要

Considering the applied problems in sharing distributed heterogeneous spatial data, this paper proposes a retrieval method for distributed spatial metadata based on directory services. A framework of distributed spatial metadata directory services is established. Moreover, a hierarchical directory structure based on spatial locations is built to provide logical association and organization foundation for distributed spatial metadata. Then a multi-directory-servers-oriented mode is presented to support directory services implementation at the physical level. Thus, distributed spatial metadata can be retrieved effectively.%本文针对分布式异构空间数据共享中面临的应用问题,提出一种基于目录服务的分布式空间元数据检索方法.在构建分布式空间元数据目录服务实现框架的基础上,以空间位置划分为核心,建立分层目录结构为空间元数据提供逻辑层次的关联和组织基础,进而提出面向多目录服务器的组织方式来支持物理层次的空间元数据目录服务实施,实现了分布式环境下空间元数据的有效检索.