Internal Data Value Modification - Input Parameter (Exit Point 2)

Allows you to override the internal value provided by the client request for the given COBOL program's Linkage Section item.


typedef cblt_rtncode (*PFI_IDP_EXIT)(mf_uns32      exit_point,
                                     IDP_EXIT_INFO *exit_info);

On Entry:

exit point
2 = Internal data value modification - input parameter
version Version of structure format
flags 0
data_size Size of data ddressed by data_ptr
ext_value_size Size of data addressed by ext_value
funcs User exit support functions
field_name Name of data item in COBOL program's Linkage Section
data_ptr Internal data value associated with field_name
ext_param_name Name of external parameter
ext_value External data value associated with field_name
request_cxt Request context
exit_data User exit-specific data

On Exit:

exit_data User exit-specific data

Return codes:

0 = Continue with default parameter mapping
1 = Terminate mapping processing. No service will be invoked. An error response will be required
2 = The exit has overridden the supplied internal value


This exit gives you the opportunity to override the internal data value created by the request handler’s default mapping from the external data value provided by the client request for the given COBOL program Linkage Section data item name. data_ptr addresses the memory created by the request handler to be passed to the user program as part of its Linkage Section. If the exit chooses to override this parameter, it must only modify up to data_size bytes starting at data_ptr, and must return IDP_EXIT_HANDLED.

The user exit program owns the exit_data field of the IDP_EXIT_INFO structure. You would typically use it to preserve context information between exit point invocations. You can use it when returning any of the IDP_EXIT_ return values.