Release 10.1A: OpenEdge Development:
Web Services

Invoking Web Service Operations from the Progress 4GL

Invoking a Web service operation can be a simple process of returning a value and using it directly (see Chapter 1 "Web Services in OpenEdge"), or it can require a more complex treatment. The more complex treatment can include interacting with the SOAP message headers, handling SOAP faults, parsing and building complex parameters, or simply managing the serialized XML of a simple parameter.

The following sections describe how to invoke and manage the data associated with an operation for all of these requirements:

Preparing to invoke operations
Invoking operations
Managing operation parameters
Managing complex data