基于组件重用技术实现GIS的地图注记对象

Realization of Map Label Object in GIS Based on the Technique of the Module Using Repeatedly

网络技术的发展促使软件开发从桌面转向企业化，也对地理信息系统（ＧＩＳ）应用提出了更高的要求。基于组件的分布式ＧＩＳ成为现今发展的潮流。本文总结了软件重用技术的发展过程，阐述了基于组件重用机制的特点。以 ＥＳＲＩ公司的组件式ＧＩＳ—ＭａｐＯｂｊｅｃｔｓ为平台，针对其没有提供注记数据类型、不便于编辑等问题，提出一种变通的方法加以解决，并利用组件重用技术进行自定义注记对象的设计和实现。最后对如何高效地开发企业级ＧＩＳ应用系统的方法进行了总结。

The development of web technique urges the software developing from desktop to enterprise, bring forward higher request on application of GlS. The module - distributed GIS become developing trend today. The paper sums up the development procedure of the technique of software using repeatedly, and expatiates the characters of the module using repeated1y mechanism. According to the f1at of the GISAiMapObjects of the ESRI Corporation, pointing at these problems of absence of label data style and discommodity of compiling, put forward an a1ternative solution, and makes the design and realization of the user-deflned label object by applying the technique of module using repeatedly. It sums up that how to develop enterprise GIS app1ication system at last.