论对象之间的关系

ON THE RELATIONS AMONG OBJECTS

面向对象软件开发首要的问题总是标识对象,建立对象间的通讯关系,设计对象时也要分析各子对象间是依据什么关系联系在一起的。因此研究对象系统中各对象间的关系是找出对象分析准则的至关重要的问题。目前,关于对象间关系的名称、定义和用法还很混乱。本文旨在澄清这种混乱,为此提出对象关系的三维模型3DRM(3 Dimmemtion Relations Model),并在3DRM框架之下讨论了对象系统中的各种重要关系,建立了较为清晰的对象关系体系,为面向对象的方法学的研究奠定了基础。

In developing object-oriented (OO)software,the first important thing is to identify objects and define the model of communicating relationships between objects. While designing objects we again have to analyse by what relations the subobjects are connected together. So it is of utmost importance to study the relationships between objects in OO system for finding out object analysing criteria. But up to now it still is a very confusing respect on the naming, definitions and the usage of relations among objects. This paper is for the purpose of discarding the confusion. To this end,a 3-dimcntional relation model (3DRM)is suggested. In the 3DRM framework,a series of relations among objects are discussed,and a clear relation hierarchy is performed. Therefore the foundation is established for further study of the OO software development methodology (OOM).