Design And Implementation Of Publish/Subscribe System Based On Geography And Position Information

Under the development of the computer distribute system, the application of publish/subscribe system become more diversified. Based on the design and implementation of publishing/subscribing geography information, this paper researches the technology of combining the geography information system with publish/subscribe system.This paper focuses on the key technology for publishing/subscribing information which is based on the position of user, it includes:1 publishing/subscribing the information based on the position of users.2 publishing/subscribing geography information based on the longitude or latitude of users, add the geography information software develop kits, develop the Data Distribute System which can analyzes geography information, and users could make decision analysis on the base of neighboring environment, also could publish/subscribe users'information in a certain range and the movement locus, which can meet the demand of users who publish/subscribe the geography information.The primary innovations of this paper include:1 Researching the design and implementation of the combination of publish/subscribe system with wireless AP identity system. It includes:the defect of the publish/subscribe system in application, combines with the wireless AP identity system and design the new match pattern, and improve the software architecture, optimize the underlying of the publish/subscribe system. Thereby, these can reduce the times of publish/subscribe, make the Data Distribute System more user-friendly, and the publisher could realize load balancing, publish/subscribe system could match more accurate. 2 Realizing the application of the GIS software develop kits in the publish/subscribe system. It includes:the publisher publish the geography information, geography information includes the longitude and latitude which gets from the GPS module, the user's name,the type of user's affiliated company, the company of the user's affiliated, the level of QoS. In subscriber, user could subscribe in four modes:single match, multi-point match, single track, multi-locus.