Based on the analysis of application integration and its development, using web service technology, a service-oriented framework for geospatial information application integration is proposed and established, which includes web application layer, service integration layer, service layer and UDDI and so on. The web application layer contains the web service client and request broker. The functions of the client are to implement the request and ask of the customers. The client affords personalized user interfaces for different customers and affords application services for different business. The request broker is the interface for the client accessing the services. The services integration layer is a wide range of services integrated approach to achieve service-oriented application integration, including service chaining, service composition and workflow (XLANG, BEPL4WS). The services layer provides meta-services for the application integration framework, and provides geospatial data web services methods and legacy system web services package methods. UDDI provides a distributed registry to achieve a "one-registration, released around the world share" function. The aim of the service-oriented geospatial information application integration framework is to achieve the service release, dynamic discovery and dynamic composition in order to achieve the geospatial information services integration and the applications integration. In this framework, it is the key points to integrate the geospatial information and the legacy system and to construct the geospatial information services chaining and services composition. The integration solution for the legacy systems is put forward from the data level and the business level. In the data level, the geospatial data package strategy based on XML&GML and based on Web services interface are established. In the business level, the web services package strategy is established according to the system functions and the business logic. The detail degree that the system function decomposes decides directly the web services function and web services composition. The integration solution for chaining web service and service composition for geospatial information are also addressed including series model, parallel model and hybrid model. These three services chain models are designed to achieve the services chaining and the services composition to complete geospatial information integration and application integration.
WU Qunyong, WANG Qinmin
. Research on Web Services-based Geospatial Information Application Integration Solution[J]. Journal of Geo-information Science, 2011
, 13(2)
: 219
-225
.
DOI: 10.3724/SP.J.1047.2011.00219
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