Exploration of ArcGIS Server development mode (1)

Below Article From: http://www.cnblogs.com/mirobright/archive/2007/04/01/696326.htmlArcGIS server development model exploration (1)

ArcGIS Server comes with the application developer framework development tool. Compared with ArcGIS Server soap APIs development
, the ADF encapsulates many web applications in the form of controls. Developers can use the control provided by the ADF to quickly create an application that can implement basic editing, search, scaling, and other functions. If you need more in-depth function customization, developers can use the development library provided by the web ADF for development, or use the ADF and soap APIs at the same time according to the situation, this is common in ArcGIS Server development. At the same time, the ADF can also integrate a variety of services in a map application, such as ArcIMS and arcweb services.
in the latest version 9.2, the Web ADF allows the same application to support data from multiple data sources at the same time, and different data sources can interact with each other. The data used by the control depends on what the data can do. A simple data can support multiple functions. Web controls communicates with the data source through resource manager. Resource manager selects a data source to be added to the application as a resource based on the purpose of the control, and determines how it can communicate with the control. The control then interacts with the data source through the resource. An igisdatasource can have multiple igisresources (one data source can accept multiple data sources). imapresource and igeocoderesource are commonly used. One igisresource can have multiple ifunctionatily. It is generally divided into common API and special API. Simply put, data source determines what resources can do (interfaces that can implement functions or functionality), and a data source corresponds to a resource. Resource Manager determines what resources it needs, resource Manager is determined by web control. One web control corresponds to one resource manager and one resource manager corresponds to one or more resources.