基于插件技术的GIS应用框架的研究与实现

吴亮; 杨凌云; 尹艳斌

基于插件技术的GIS应用框架的研究与实现

中国地质大学信息工程学院, 教育部地理信息系统软件及应用工程中心, 湖北武汉 430074

基金项目:

国家“863”计划 2003AA132010

详细信息

作者简介:
吴亮(1976-),男,讲师,博士,主要从事地理信息系统的教学与研究工作.E-mail: wuliang123@sina.com

中图分类号: P208;TP311
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- 被引次数: 0
出版历程
- 收稿日期: 2006-05-30
- 刊出日期: 2006-09-25

Plugin-Based GIS Application Framework: Research and Implementation

Faculty of Information Engineering , China University of Geosciences, GIS Software Research and Application Engineering Center of the Ministry of Education, Wuhan 430074, China

摘要

摘要: 为了解决传统GIS软件的行业化、专业化和开发成本较高的问题, 使GIS软件面向大众化、低成本化发展, 构建插件式GIS应用框架平台, 能提供一个具有良好的复用性和灵活的可扩展性平台, 同时为项目实施所面对的特定知识应用领域提供很好支持软件框架具有实际意义.在深入研究“平台+插件”模型的本质与实现机制后, 提出了基于插件技术的GIS应用框架的对象模型、消息机制和层次结构.同时将这一理论成果成功应用到了大型GIS平台---MAPGIS7.0的开发与实践中, 实现了全插件式的GIS应用框架, 使平台功能扩展和GIS的应用开发具有了可行性.
- 插件 /
- GIS应用框架 /
- GIS层次结构
Abstract: Traditional GIS software faces some hot potato, for example, industrilization, specialization and high cost.In order to popularize GIS software, and reduce its cost, construct a plugin-based GIS application framework, which not only provides a nice reusable and flexible develop environment, but also supports special application fields faced developers when they put in practice some application project. After dissecting the essential and implementation mechanism of platform & plugin model, we present the object model, message mechanism and hierarchy of a plugin-based GIS application framework model, and apply this theory into the development and practice of large-scale GIS platform (MAPGIS7.0), which significantly promotes the extension platform function and GIS application.
- plugin /
- GIS application framework /
- GIS hierarchy

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图 1 主程序与插件关系

Fig. 1. Collaboration diagram of main program and plugins

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图 2 应用框架结构

Fig. 2. Application framework structure

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图 3 应用框架对象接口

Fig. 3. Application framework object interface

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图 4 框架界面接口

Fig. 4. Application framework user interface

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图 5 GIS框架中的Windows消息转发流程(a) 和消息转发流程(b)

Fig. 5. Windows message dispatch process (a) and message transmit process (b) in GIS framework

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图 6 框架结构

Fig. 6. Framework architecture

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图 7 MAPGIS7.0的插件管理

Fig. 7. Plugin management of MAPGIS7.0

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表 1 GIS平台中插件分类

Table 1. Plugin type in GIS platform

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