基于DOM的空间数据转换模型的研究与设计  

Research and Design of Spatial Data Transformation Model Based on DOM

作　　者：高晓黎[1] 张书亮[1] 潘媛[1] 闾国年[1] 田星火[1] 

机构地区：[1]南京师范大学地理信息科学江苏省重点实验室,南京210097

出　　处：《计算机工程与应用》2006年第9期154-157,共4页Computer Engineering and Applications

基　　金：国家自然科学基金资助项目(编号:40401045)

摘　　要：正如XML正在对Web信息的组织与传输性能产生深远影响一样,作为基于XML的空间信息编码标准的GML语言,也正在地理领域掀起一场针对空间数据处理的革命。设计并实现空间数据转换模型,其目的在于摆脱异构空间数据不易实现共享与互操作的困境。转换模型首创性地提出了“超集式GML数据结构”这一新的术语。作为HTML与XML文档应用程序接口的DOM,将文档的逻辑结构组织成DOM树。Delphi7.0内置的TXMLDocument组件实现了DOM解析接口。论文最后对基于DOM技术的空间数据基础转换系统作了阐述。Just as XML is now making a significant impact on the ability of organization and transportation of Web information,GML will do the same in the world of geography.GML is an XML based encoding standard for geographic information,it has revolutionized the treatment of spatial data.in order to resolve the problem of heterogeneous sharing and interoperation,a model of spatial data transformation is designed and implemented.In this model,aggregative data structure for GML,a new term,is proposed.DOM is an API for HTML and XML documents.It defines the logical structure of documents which is called DOM tree.The TXMLDocument component embedded in Delphi7.0 is the interface of DOM parser.Finally,the system of basal spacial data transformation based on DOM is introduced.

关 键 词：可扩展标记语言 地理标记语言 超集式GML数据结构 文档对象模型 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论] TP312[自动化与计算机技术—计算机科学与技术]