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This requirement is addressed by z/OS Connect V3.0.55 / APAR PH43628: https://www.ibm.com/support/pages/apar/PH43628
The capability to pass through JSON to COBOL is now an available option (map top level object to a large COBOL field or CHAR container)
For further details refer to the “ Mapping your API and z/OS Asset” topic in the z/OS Connect OpenAPI 3 Documentation:
https://www.ibm.com/docs/en/zosconn/zos-connect/3.0?topic=designer-mapping-your-rest-api-operations-zos-asset
The capability will extend to the IMS z/OS asset when it is delivered.
I already signed up for this program in the past, because I am closely working together with the IMS lab on lots of system and application modernization topics. I added z/OS Connect as area of interest for this program.
While I can understand, that mixed copybook / JSON messages are challenging to handle and so will be a long-term item, a pass-through of full JSON messages for Java applications running for instance under IMS should be an easier thing to do. It would be good if you could provide this as a first part of the solution earlier.
Thank you for this RFE.
This is a strategic requirement that is part of our long term roadmap. As part of our future roadmap we investigating "functional mapping". This would allow you to map entire JSON objects to string fields in copybooks. In the simplest sense this would allow a program interface to be defined as a single large string field and for a mapping to map the top level JSON object to/from that field.
Delivering this requirement will need some careful design consideration and may take some time to deliver. We are currently seeking participation in our design program to help us develop our initial designs. If you are interested in joining us on this journey to shape the delivery of this capability, please sign up to the Z Client Feedback program via the link below, indicating your interest in z/OS Connect EE:
https://www-01.ibm.com/marketing/iwm/iwmdocs/web/cc/earlyprograms/zcustomer.shtml