数字城市中面向服务架构的GIS服务链事务处理研究

Research on GIS Service Chain Transaction Processing Based on Service-Objected Architecture in Digital City

随着各地数字城市建设与应用的逐渐铺开,地理空间框架建设中地理要素在实际应用中的在线灵活管理变得越来越重要,而地理要素的事务处理则是实现数字城市中各种要素彼此物联的技术基础。本文针对这一需求,结合实践,提出了在面向服务的架构下对地理要素事务处理的概念流程设计。结合服务分类、空间信息服务链、工作流等技术,根据具体的业务逻辑构建空间信息服务链,保证事务处理的业务逻辑和实现相分离。最后,通过物联地理要素数据的编辑、显示和变更分析等服务链的构建过程和原理展现了原型系统的实现过程。

Along with the prosperous deployment of the digital city construction among different cities,the on-line flexible manipulation of geographical features in the geographical spatial construction is becoming more and more significant in the actual sceneries,and the transaction process is the technical basis of realizing the geographical elements’interconnectivity in digital city.In order to tackle the demand and combined with actual practice,the paper puts forward a schematic workflow design for geographical element in the real transaction process based on the framework of SOA.It synthesizes service classification,spatial information service chain,workflow technologies to ensure the separation between transactional logics and realization in the transaction process.In the end,a prototype system which implements the process is presented to show the schema and construction procedure of the editing,displaying and change updating for interconnected geographical elements.