The Web Services Description Language (WSDL) file is an optional XML file generated by ProxyGen and used by the Sonic Web Services Invocation framework to generate a proper SOAP message. It contains information required by programmers of client applications that will call the service. It is a standard component widely used in the industry for development of Web service clients, however the WSDL file generated by ProxyGen is specifically for use with Sonic’s Web Service Invocation and is not appropriate for use with outside clients. WSDL files are stored as resources in Sonic ESB and can be viewed with Sonic Workbench. For more information on the WSDL files generated for the OpenEdge Adapter for Sonic ESB and how Web service clients must use them, see OpenEdge Development: Web Services.

The following figure is a simplified illustration of the function of the OpenEdge Adapter for Sonic ESB in the context of Sonic ESB. The components and functions illustrated in the this figure are explained in more detail in the sections that follow.