A User-Reconfigurable Object-Oriented Geographic Database

用户可重新配置的面向对象的地理数据库

• 批准号: 11680365
• 负责人: YOSHIDA Takaichi
• 金额: $ 1.73万
• 依托单位: Kyushu Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11680365/
• 关键词: geographic information system; object-oriented database; user view; extensibility; reconfiguration; delegation; ビュー; 三次元市街地地図; 道路網地図; 経路探索

The aims of the research are to integrate the view providing mechanism and the extensibility realizing mechanism, and to provide the mechanism that reconfigures the database virtually for users.We proposed that utilization of a map, area of a map, and information level of a map (that corresponds to scale of a map) prescribe the view of a geographical database. Moreover, as the elements of the view instance in a object-oriented geographical database, we listed a set of objects that composes the view instance, and behavior of each object. We call the former "domain" and the latter "appearance". Utilization, area and information level of a map have each prescribing domain and appearance. The entire view is defined as a composition of each domain and appearance.Based on the above model, we designed a view creation mechanism. It is composed of two parts, i.e. a domain defining part and an appearance defining part. Moreover, it creates a set of proxy-objects based on domain and appearance defined here. Users operate the database via the set of proxy-objects.The virtually reconfigured database is able to hold extended-objects. Extended-objects contain extended data and methods that are necessary for a user, and delegate ununderstandable messages to the proxy-objects. Users can regard a set of proxy-objects and extended-object as a virtually reconfigured database.

研究的目的是将视图提供机制与可扩展性实现机制相结合，为用户提供虚拟重构数据库的机制，提出以地图的利用率、地图的面积、地图的信息级别(对应于地图的比例尺)来规定地理数据库的视图。此外，作为面向对象地理数据库中视图实例的元素，我们列出了组成视图实例的一组对象，以及每个对象的行为。我们称前者为“领域”，称后者为“表象”。地图的利用率、面积和信息化水平都有各自的规定域和外观。将整个视图定义为各个领域和外观的组合，在此模型的基础上设计了一个视图创建机制。它由两部分组成，即域定义部分和外观定义部分。此外，它还根据这里定义的域和外观创建了一组代理对象。用户通过代理对象集对数据库进行操作，虚拟重新配置的数据库能够保存扩展对象。扩展对象包含用户所需的扩展数据和方法，并将无法理解的消息委托给代理对象。用户可以将一组代理对象和扩展对象视为虚拟重新配置的数据库。

项目成果

Toshiyuki Ishimura, Takaichi Yoshida, Yudai Karasuyama: "Building Wall Surface Patterns Database for 3D Urban Map : A Categorization Method"The 3nd International Workshop on Urban Multi-Media/3D Mapping (UM3' 2000). (CD-ROM). (2000)

Toshiyuki Ishimura、Takaichi Yoshida、Yudai Karasuyama：“为 3D 城市地图构建墙面图案数据库：一种分类方法”第三届城市多媒体/3D 制图国际研讨会 (UM3 2000)。

Toshiyuki Ishimura,Takaichi Yoshida and Yudai Karasuyama: "Building Wall Surface Patterns Database for 3D Urban Map : A Categorization Method"The 3nd International Workshop on Urban Multi-Media/3D Mapping(UM3'2000). (CD-ROM). (2000)

Toshiyuki Ishimura、Takaichi Yoshida 和 Yudai Karasuyama：“为 3D 城市地图构建墙面图案数据库：一种分类方法”第三届城市多媒体/3D 制图国际研讨会（UM32000）。

石村俊幸,吉田隆一: "3次元市街地地図データベースにおけるユーザ・ビューとしての表現法"情報処理学会九州支部火の国情報シンポジウム2001. 232-239 (2001)

Toshiyuki Ishimura、Ryuichi Yoshida：“3D 城市地图数据库中用户视图的表示方法” 日本信息处理学会九州分会 Hinokuni 信息研讨会 2001. 232-239 (2001)

Muhammad Abaidullah Anwar, Takaichi Yoshida: "Integrating Object-Oriented Road Network Database, Case and Knowledge for Route Finding"The 16th Annual Symposium on Applied Computing (SAC 2001). 215-219 (2001)

Muhammad Abaidullah Anwar、Takaichi Yoshida：“集成面向对象的道路网络数据库、案例和知识以进行路线查找”第 16 届应用计算年度研讨会 (SAC 2001)。

Muhammad Abaidullah Anwar and Takaichi Yoshida: "Integrating Object-Oriented Road Network Database, Case and Knowledge for Route Finding"The 16th Annual Symposium on Applied Computing (SAC 2001). 215-219 (2001)

Muhammad Abaidullah Anwar 和 Takaichi Yoshida：“集成面向对象的道路网络数据库、案例和知识以进行路线查找”第 16 届应用计算年度研讨会 (SAC 2001)。