OpenEdge support for accessing Web services
Figure 6–3 shows how a Progress 4GL application can access a Web service as a Web service client.
The dark shaded portions are the part of the client that are dedicated for Web service access. This picture is very much the same for any Web service client platform. However, in place of Java, VB.NET, or some other language, OpenEdge supports the Progress 4GL.
As with other client platforms, OpenEdge relies on the WSDL file provided by the Web service to define the Web service interface for the client. In OpenEdge, the same WSDL file must be accessible at development time in order to allow the OpenEdge WSDL Analyzer to generate client interface documentation and at run time in order to allow the client application to access the Web service. For more information, see OpenEdge Development: Web Services .