基于软件体系结构的对象持久层设计方案.pdfVIP

第 25卷第 1期 计 算 机 应 用 研 究 Vol. 25, N o. 1 2008年 1月 ApplicationR esearch of Computers Jan. 2008 1, 2 2 3 , , ( 1. 北京机械工业学院计算机与自动化系, 北京 100085; 2. 北京科技大学信息工程学院, 北京 100083; 3. 中 国科学院光电科技集团国科东方光电技术公司, 北京 100080) : 针对 ScottAmbler提出的健壮持久层设计方案存在的问题, 提出了一种基于软件体系结构的对象持久 层设计方案将体系结构作为对象持久层的整体视图,反映了对象持久层的整体功能和结构, 并利用层模式实 现了对象持久层的可再用性可维护性可修改性和可移植性等质量属性作为设计方案的应用, 给出了一种对 象持久层的类设计模型 : 对象持久层; 持久化应用系统; 软件体系结构; 层模式; 类设计 : TP31152 : A : 2008) Softw are architecturebased design of persistence layer 1, 2 2 3 Q IN Y iqing , YANG B ingru , LI Jian ( 1. Dept. of Computer Automation, Beij ing Institute of M echanicalIndustry, Beij ing 100085, China; 2. College of Information Engineering, niversity of Science TechnologyBeij ing, Beji ing 100083, China; 3. GK EastOp toelectronicTechnologies INC, ChineseA cademy of Sciences, Bejiing 100080, China) Ab stract: By analyzing the draw backs of an existing design of a robust persistence layer, presented a new one first based on the softw arearchitecture. An architectural view of a persistence layer was a representation of the whole system from the per spective of the structure and function. As a typical arch itectural style, layered patternwas also utilized to ach ieve the qualities such as reusability, m aintainab ility, m odifiab ility and portab ility. In addition, presented a class design m odel of the persist ence layer as an app lication of the design. K ey words: persistence layer; PAS( persistent application system) ; software arch itecture; layered pattern; class design