Abstract

A practical hierarchical component-based WebGIS model referred to as Geo-Union is presented. Geo-Union consists of four layers: storage layer, service layer, component layer and application layer. Service layer is partitioned into another two layers: Geo-Union client and Geo-Union server. The architectures and object diagram of each layer in Geo-Union are discussed in details. After that, four key technologies adopted in Geo-Union (spatial data model, ORDB, spatial index and spatial cache) are summarized and analyzed, especially the spatial cache framework of Geo-Union. At last, some future works in WebGIS, such as interoperability, security, distributed computing and intelligent computing, are indicated and simply explored.

Keywords

Cite this article

@article{cai-1433,
  author  = {Yingwei Luo and Xiaolin Wang and Wenjun Wang and Zhuoqun Xu and Li Ding},
  title   = {A Hierarchical Component-Based WebGIS and Its Key Technologies},
  journal = {Computing and Informatics},
  volume  = {24},
  number  = {3},
  pages   = {281--296},
  year    = {2005},
  issn    = {1335-9150},
  url     = {https://cai.type.sk/content/2005/3/a-hierarchical-component-based-webgis-and-its-key-technologies/}
}
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