WFS Overview

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SuperMap iServer Provides the WFS service, which is compliant with Web Feature Service Implementation Specification of OGC (Open Geospatial Consortium)

WFS is based on GML (Geography Markup Language). The WFS operations support INSERT, UPDATE, DELETE, QUERY and DISCOVERY operations on geographic features using HTTP as the distributed computing platform.

Steps for requesting WFS service:

  1. A client application would request a capabilities document from the WFS. Such a document contains a description of all the operations that the WFS supports and a list of all feature types that it can service.
  2. A client application (optionally) makes a request to a web feature service for the definition of one or more of the feature types that the WFS can service.
  3. Based on the definition of the feature type(s), the client application generates a request as specified in this document.
  4. The request is posted to a web server.
  5. The WFS is invoked to read and service the request.
  6. When the WFS has completed processing the request, it will generate a status report and hand it back to the client. In the event that an error has occurred, the status report will indicate that fact.

 

WFS versions supported by SuperMap iServer currently include:

 

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