摘要
针对协同GIS应用中的并发与协同,提出了一种即时锁共享机制.其基本思想是在一定的协同感知基础上,允许产生一定的冲突,然后加以解决.对于共享锁用户并发操作导致的冲突意愿保护,采用了有向二叉树结构存储的并发版本方法.冲突的解析则利用角色和投票相结合的方法.此机制已经在CoGIS中实现,结果证明它可以在保证数据一致性的基础上提高系统的整体性能.
For concurrency and collaboration of collaborative GIS application,this paper presents an instant share locking mechanism.The main idea is on the basis of collaborative awareness,a few unavoidable conflicts can be resolved.The concurrent version method with the structure of directed binary tree is adopted in order to preserve the intention of an operation resulted from concurrent operations.Then conflict resolution adopts the combination of role priority and vote.This mechanism has been implemented in CoGIS,and the result has proved that it can provide better performance on the basis of data consistency.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第z1期379-382,共4页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(60273076
90412010)
关键词
基于网格的协同标绘系统
冲突版本
角色
意愿保护
grid-based collaborative geigraphic information plotting system(CoGIS)
conflict version
role
intention preservation
