Understanding and using IMS SOAP Web services

Implementation must start with RDz, which provides the foundation for IMS SOAP enablement. The tooling supports both bottom-up and top-down service generation. Let’s look at both angles.

The bottom-up approach to service generation exposes existing IMS applications as Web services. RDz provides a wizard that generates Extensible Markup Language ( XML ) Web Services Descriptor Language ( WSDL ) files from high-level language copy books (i.e., data structure definitions source modules similar to C header files or Java packages) written in COBOL or PL/1. The process begins with importing the copy books describing the IMS inbound and outbound message formats into RDz. From this information, the RDz wizard generates the following:

WSDL, which can be given to any clients wishing to utilize the IMS Web service. COBOL programs that convert between SOAP Gateway XML documents and IMS messages. A correlator file that ties all this stuff together, including the converter name,

Source: SearchDataCenter.com