基于ArcGIS的地籍GIS图形交互子系统设计

Design of ArcGIS-Based Cadastre GIS's Graphics Interaction Subsystem

地籍GIS系统是地籍管理信息系统的重要组成部分,图形交互子系统则是地籍GIS系统的重要组成部分。首先分析了图形交互子系统的功能以及特点,把设计目标确定为可扩展性与代码重用性,并且要遵循Open-Closed原则。根据设计目标,基于ArcGIS Engine平台,利用面向对象的思想,使用Template Method以及Factory Method设计模式,设计出交互工具类层次以及工厂类,完成了该子系统的设计。设计已经在实际系统中应用,增加新功能比较方便,很多代码可以重用。

Cadastre GIS system is an important part of Cadastre information management system, and Graphics interaction subsystem is an important part of cadastre GIS system. The paper analysis functions and characteristics of graphics interaction subsystem, makes extendable and code reusable as the design goals, follows the Open-Closed principle in the design process. According to the design goals, using the object-oriented thinking, using the Template Method pattern and Factory Method pattern, we design an interaction class hierarchy and a factory class. The design has already used in practice, it is easy to add new functions and many codes can be reuse.