| 摘要: |
| 本文结合数据流图编辑工具开发过程的描述，阐述了一个责任驱动的面向对象开发方法的基本思想、实施框架和记号系统．这一方法强调软件是对现实的模拟，软件开发应从问题理解人手，以对象在问题中所承担的责任来驱动软件的开发．这一过程包括反复循环的5个步骤：划分主题、标识对象类、建立联系、定义服务和定义属性．通过行为分析，获得问题的主题划分，从而引导标识与问题相关的对象类及其相互联系，并指导定义其属性和服务，由此获得未来系统的一个清晰的分层模型． |
| 关键词: 面向对象软件开发，责任驱动，主题，合作． |
| DOI： |
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| 基金项目:本研究得到了国家八五攻关项目、863计划项目的支持. |
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| A RESPONSIBILITY—DRIVEN OBJECT—ORIENTED ANALYSIS AND DESIGN METHOD |
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Tian Zhong,Qian Leqiu,Zhao wenyun,Qian Jiahua
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| Abstract: |
| This paper presents the basic idea．notation and development process of an object—oriented anMysis and design method through the development of a data flow dia-gram editor,This method takes a responsibility—driven modelling approach to software development，emphasizing that software simulates the real world．It starts with problem —understanding to build a user model of the problem，then this model is evolved into an implementation model through an iterating five—stage—process during each phase of the software development process．The five stages include：dividing subjects，identifying classes，establishing relations，defining services and defining attributes．Based cn behav-ior analysis，the user problem is first divided into a set of subjects．each of which hosts a number of classes with distinguished responsibilities and collaborators The responsibili-
ties then hlrther help define the services and attribules of each class and their inter—rela-dons．All these put together give software developers a clear layered model of the pro-posed system． |
| Key words: Object—oriented software development．responsibility—driven approach,subiect,collaboration． |
