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DOI:
:1996.7(5):264-271

RKB/PL:C++的持久性扩充
田忠,刘畅,陈莹,钱乐秋
(复旦大学计算机科学系,上海,200433)
RKB/PL:THE PERSISTENCE EXTENSION OF C++
Tian Zhong,Liu Chang,Chen Ying,Qian Leqiu
()
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> 中文摘要: 需求工程知识库/PL——RKB/PL(requirement—engineeringknowledgebase/PL)是保持C++原有风格对C++进行的持久性扩充.为支持对象的持久性,RKB/PL在C++对象类的基础上扩充了以约束声明加强对象状态的用户监控;引入簇来表达对象类的集合含义;引入集合、簇、簇闭包的遍历机制来支持对象查询.为支持这些语言机制,RKB/PL具有一个由一组build—in对象类层次、类型信息库及接口函数、系统状态表以及系统服务函数等构成的运行时系统.本文讨论了RKB/PL中这些机制的表示、相应的运行时系统的组成以及它们的主要实现技术.RKB/PL已成功地用于实现“软件需求获取助手FRA”系统的需求工程知识库子系统.
中文关键词: 持久性  面向对象    约束  查询  
Abstract:KB/PL (requirement - engineering knowledge base/PL) is a persistence extension of the C+ + programming language, while adhering to the style of C+ +. In order to support persistence in RKB/PL, constraint declaration is introduced into the C+ + class declaration to facilitate user's monitoring of object state; the notion of cluster is introduced to capture the "set-of-objects" conception of class 3 set iterator, cluster iterator, cluster closure iterator are also introduced to support object query. RKB/PL run -time system facilitating these new language mechanisms is composed of a set of building class hierarchies, type information base interface functions, system service functions and also a set of system state tables. RKB/PL has been used to implement the RKB(requirement-engineering knowledge base) of the "software requirements assistant FRA"system.
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基金项目:本文研究得到国家863高科技项目基金资助. 本文研究得到国家863高科技项目基金资助.
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田忠,刘畅,陈莹,钱乐秋.RKB/PL:C++的持久性扩充.软件学报,1996,7(5):264-271

Tian Zhong,Liu Chang,Chen Ying,Qian Leqiu.RKB/PL:THE PERSISTENCE EXTENSION OF C++.Journal of Software,1996,7(5):264-271