应用REST技术的GML数据管理

摘要

It is necessary that geography markup language (GML) which uses XML as the encoding information to express the geographic data provides data sharing and interoperability. As the application of GML is more extensive, GML data storage and management is one of the hot spots. With the development of the network technology and GIS technology, service oriented architecture (SOA) was widely used in geographic information services. Representational state transfer (REST) is a lightweight architecture technology for distributed call, which has a distinct advantage in building SOA. The object database is used in GML data storage, and how to use REST architecture technology to realize the management and sharing of GML spatial data is mainly discussed. First, the key REST architecture technology and the design guidelines of GML data management service were introduced. Then the process of realizing the API based on the WCF framework was introduced. Finally, a data management system that is called GML data management service is achieved. This system shows that REST is ideal for GML geographic data management.%地理标记语言(GML)作为使用XML信息编码来表达地理数据的标准,其主要目的是实现数据共享与互操作.随着GML广泛应用,GML数据存储管理成为研究热点.面向服务架构(SOA)已经广泛应用于地理信息服务,表述性状态转移(REST)作为一种专门为分布式调用而设计的轻量级架构技术,在构建SOA方面有着明显的优势.论文采用对象数据库对GML进行存储管理,探讨如何利用REST架构技术实现GML空间数据的管理与共享.分析了REST架构的关键技术,设计了GML数据管理服务框架.详细论述了基于微软WCF框架的RESTAPI的实现过程,最后实现了一个调用GML数据管理服务的数据管理系统.通过客户端实例验证表明REST适合于GML地理数据的管理与共享.