摘要
基于J2EE的应用程序开发所使用的Facade设计模式,进行J2EE中远程调用的分析,实现EDT(封装数据类型);以一个应用实例为背景,对EDT的使用进行详细描述,并就有否使用EDT的性能进行了对比实验,结果表明,使用EDT具有明显的性能优势,且该优势随数据库表的字段数的增加呈线增长性关系。
In this paper,Facade design pattern is first introduced for the development of applications based on J2EE,and the remote call under the J2EE architecture is analyzed.The implementation of EDT(encapsulated data type)is described.Then,according to a real business specification,the application of EDT is depicted in detail,which is followed by a comparison of the performance in the two situations,using EDT and not using EDT.The results show that the performance using EDT is much better.Moreover,with the increase of the number of fields in the database table,the mentioned superiority in performance is also increasing,and there seems to be a kind of linear relation.
出处
《武汉科技大学学报》
CAS
2005年第4期391-394,共4页
Journal of Wuhan University of Science and Technology
基金
中国科学院知识创新工程定向发布基金项目(KGCX2-JG-09)
