| Currently, the performance of information system is a key issue in the informationization construction process, especially for some large-scale information system which has a great amount of users. It always meets performance bottlenecks. EJB(Enterprise JavaBeans) is a good tool for large enterprise business system development, it has been widely used in some large-scale projects now, but there are still some problems in its performance. Some of them are mainly because of its long-distance recall mechanism and the implement of Entity beans. There are some optimize strategies in EJB now, but most of them are focus on the configuration aspect or the structure of EJB implement, these methods may exert positive influence to EJB performance, but these methods also reduce the EJB coupling property and they may directly increase the maintenance cost directly. Most of these methods just provide a way to build a effective EJB application, but they don't provide a effective way to indicate a solution model.This paper introduce the CBD concept model into EJB optimize strategies. It is helpful to solve the conflict between EJB optimize strategies and high cohesion property of EJB. The mainly problem is how to reconstruct the CBD components by using EJB components, after the reconstructing of the CBD components, we may use some optimize strategies in the CBD inside, and keep the default configuration relationship between CBD components, it will help to decrease later development cost and distribute deploy time. The reason of using CBD component model is that we may pay more attention to analyse the relationship between CBD components. In fact, if the interface in CBD components do not change, the implement of optimize strategies in CBD inside EJB may not affect system later development cost and distribute deployment.In this paper, from a practical application point of view, firstly, carried out in-depth research and analysis on EJB optimize strategies, and then analyzed the content of CBD component, then according to the shortcoming that EJB optimize strategies can not be inexpensive for later development and distribute deployment, it gives combined CBD component mode——CBD component model which based on EJB construction and optimize strategies. The model gives a detailed analysis based on characteristics of China Taiwan FarEast Telcom current Collection system. Especially in assignrole and assigndetail modules. Then implement the CBD model in case system. Finally, the test results are given.The analysis of test results and comparison with traditional EJB optimize strategies show that The CBD model which based on EJB optimize strategies does more progress than traditional EJB optimize strategies. That is the value of this paper. |
