Research And Practice Of Spatial Information Service Mode

Spatial information service mode arises from the practice of spatial information service, which is abstracted from all kinds of different spatial information service methods. It needs to explore the inherent law of spatial information service, finding the commonness among different spatial information service, setting up their connection, fully play the function of existed spatial information service system, meanwhile scientifically instruct the construction of future spatial information service. With this purpose, this article is making research towards spatial information service mode.At first, the article creatively brings forward spatial information service mode that suitable to spatial information characteristics, and elaborates the basic structure and characteristics of spatial information service mode, also its evolving principle. It explains the inherent law of present all kinds of spatial information service methods. At present every existed spatial information service application could be understood as a kind of service activity process evolved by this mode. Under different service strategy and restricting condition, these service activity processes changes to spatial information service method aiming at specific application purpose.Secondly, the article elaborates the realizing method and flow facing spatial information service activity process. On basis of SOA architecture designing route and realizing strategy, it creatively brings forward the view of spatial information service supermarket. That is to package and issue all the resources and behaviors relative to spatial information in service way, combining different spatial information service activity by transferring among services, then to realize evolvable service activity process.Meanwhile, the article brings forward one administrating frame of spatial information service resources, which effectively manages all resources relative to spatial information service. Inside this frame, everything is service, including users' demand, service function and spatial information resources, all could be described as service according to special criterion and demand. Then it makes these services easily to be found and transferred in the frame, flexibly and actively realizes evolvable spatial information service activity process, in the way of service combination.At last, the article creatively submits a new way to describe service relationship, as main strategy and restriction to realize spatial information service mode under SOA architecture. This method firstly establishes service describing modal basing on semantic, with this basis, it fetches in the idea of topological structure, then sets up topological relationship among spatial information service. The article elaborates service topology's basic element, basic relationship and topology description, etc., describing the basic method and process of establishing service topology. It thoroughly sets forth setting up spatial information service activity process, on base of service topological relationship; and detailed behavior during managing activity performance. It puts forward a complete service strategy and restricting scheme, which is basing on SOA architecture, practicing spatial information service mode. With this foundation, it carries out corresponding experiment, verifies with specific project combination.