Research And Implementation Of Data Exchanging Platform Based On Publish/Subscribe Mechanism

Now,many large-scale enterprises use multiple database manage business data by using many database,especially multi-store business enterprises.According to business needs,need to exchange all or part of the business data between databases store data, because the application uses a different development language, or different structure of the database table,data is unable to transmit each other, enterprises can not achieve the needs of the specified data exchange between databases.There are the above problems for real estate agents.The real estate agent is highly dependent on information of customer and stores.All stores data must be updated simultaneously,one shop update,the other branches must also be updated in time.In the same time,customers need to receive timely subscription stores information.Publish subscribe mechanism can solve the above question.Researching and designing based publish/subscribe mechanism of data exchange software is significance.Analysising and researching based on publish/subscribe communication mechanism and the jms specification,design and realize publish/subscribe system. System use a database trigger mechanism for the effective realization of the real-time data extraction to ensure the synchronization of data update;server and client use confirmation of mechanism and storage mechanisms to ensure the reliable, asynchronous transfer;mapping between the database and xml to solve the data exchange between different databases;applications of different programming languages carry out the data transfer by Xml format string;based on files subscriber management and message persistence manager reduced database operations and improve the efficiency of the messaging service;development of publish subscribe match rules control message distribution;System also implements the message listener,multi-thread management and improve the quality of the server;development of user publish subscribe management system in order that user manage content of subscriptions.