多版本并发控制的WFS要素更新方法  

A Multi-Version Concurrency Control Method for Feature Updating of WFS

作　　者：李风光[1] 王永生[1] 祝若鑫 陈科[1,2] 

机构地区：[1]信息工程大学,河南郑州450001 [2]国土资源部地质信息技术重点实验室,北京100037

出　　处：《测绘科学技术学报》2014年第2期212-215,220,共5页Journal of Geomatics Science and Technology

基　　金：国家自然科学基金项目(41271392);郑州市科技攻关项目(112PPTGY225)

摘　　要：分析了网络要素服务规范中提供的进程内锁机制在多用户并发提交更新事务过程中存在的缺陷;借助数据库系统中事务并发控制方法,提出了一种基于多版本并发控制的要素更新并发控制方法,来解决WFS服务在多用户并发提交要素更新事务请求中存在的死锁和阻塞式等待问题。针对本文提出的这一方法,对WFS要素更新中增加要素、删除要素和更新要素的并发问题进行实验验证。The defect of locking mechanism in process of multi-user concurrent updating transactions provided by Web Feature Service specification was analyzed. Then to resolve the problems of deadlock and blocking waiting of WFS during the concurrency requesting for feature updating by submitted multi-user, a concurrency control method of feature updating based on Multi-Version Control which was transaction concurrency control method of DBS（ database system） was proposed. For the method proposed, it gave experiments which tested and verified the concurrency problems of adding, deleting and updating feature for WFS feature updating.

关 键 词：网络要素服务 多版本并发控制 事务并发 要素更新 更新事务冲突 

分 类 号：P208[天文地球—地图制图学与地理信息工程]