The CICS Web services assistant is a set of batch utilities that can help you transform existing CICS applications into Web services and enable CICS applications to use Web services provided by external providers. The assistant supports rapid deployment of CICS applications for use in service providers and service requesters, with minimal programming effort.
When you use the Web Services Assistant for CICS, you do not have to write your own code for parsing inbound messages and for constructing outbound messages; instead, CICS maps data between the body of a SOAP message and the application program’s data structure.
Resource definitions are, for the most part, generated and installed automatically. You do have to define PIPELINE resources, but you can, in many cases, use one of the pipeline configuration files that CICS provides.
The assistant can create a WSDL document from a simple language structure or a language structure from an existing WSDL document, and the assistant supports COBOL, C/C++, and PL/I. It also generates information used to enable automatic run-time conversion of the SOAP messages to containers and COMMAREAs, and vice versa.
However, the assistant cannot deal with every possibility, and there are times when you will need to take a different approach. Following are some examples:
In this situation, you should consider one of the following alternatives:
1. Web services assistant utility programs
The CICS Web services assistant provides two utility programs: DFHLS2WS and DFHWS2LS. They are described in detail in this section.
The DFHLS2WS program generates a Web service description and Web service binding file from a language structure. Example shows sample JCL for running DFHLS2WS.
Example: DFHLS2WS JCL sample
The main input parameters are as follows:
Example: DFHWS2LS JCL sample
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