Implementation of SIG Service Based on WSRF and WS-Notification

Abstract

An approach of constructing a Spatial Information Grid (SIG) based on Web Service Resource Framework (WSRF) and Web Service Notification (WSN) was described in this paper. This approach hurdles the shortcoming of common SIG, which inherits stateless and not limitations of Web Service standards. It is impossible to require persistent interaction with the clients of the services. A SIG based on WSRF and WSN was constructed in three steps: firstly, creating web services logic, which means a SIG example. Secondly, annotating the logic with meta-data through attributes for WSRF.NET tools recognize. Thirdly, using the WSRF.NET tools to create and deploy the WSRF-compliant SIG web service. A coordinate transformation web service is taken as an example in this paper. Experimental results show that SIG service building on WSRF.NET is stateful, dynamic and persistent. It was designed to standardize representation, and access to stateful resources in a distributed environment.