空间数据集成、检索和访问组件模型

为了解决空间数据集成、检索和访问的问题,从数据提供者和数据使用者2个角度出发,提出了建立具有统一集成、检索和访问接口的空间数据访问组件。该组件针对数据提供者提供统一的集成接口,实现了以ArcSDE为例的空间数据引擎和以REST服务为例的Web Service引擎,建立了针对第三方空间数据引擎和Web Service空间数据源集成方法。该组件内部构建了空间数据处理模块和Web Service数据处理模块,与空间数据集成接口相互协作完成集成并处理空间数据源的任务。同时,针对数据使用者提供了空间数据检索和访问功能,在空间数据检索接口中实现了基于要素的检索方法,能对集成后的空间数据进行快速的查询检索,达到空间数据共享、访问的目的。

Component Model for Integration,Retrieval and Access of Spatial Data

From the perspective of data provider and user,we proposed to build a spatial data access component having interfaces of integration,retrieval and access to solve the problem of integration,retrieval and access,which provided united integrated interface for data provider,accomplished spatial data engine like ArcSDE and Web Service engine like REST service,and built spatial data engine for the third party and Web Service spatial data integration.Modules of spatial data and Web Service data processing were built in the component,which cooperated with spatial data integration interface to implement the task of integrating and disposing of spatial data.Meanwhile,function of data retrieving and accessing was provided for the user.Retrieval method based on elements was accomplished in interface of retrieval,which could quickly retrieve the integrated spatial data.Thus,the goal of data sharing and accessing is achieved.