Previous Topic Next topic Print topic


Internal Data Value Modification - Output Parameter (Exit Point 6)

Allows you to override the internal data value created during the execution of the application.

Syntax:

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

On Entry:

exit point
6 = Internal data value modification - output parameter
exit_info
version Version of structure format
flags 0
data_size Size of data addressed by the data_ptr field
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 External parameter name
request_cxt Request context
exit_data User exit-specific data

On Exit:

exit_info
exit_data
User exit-specific data

Return codes:

IDP_EXIT_CONTINUE
0 = Continue with default parameter mapping
IDP_EXIT_STOP
1 = Terminate mapping processing. An error response will be required
IDP_EXIT_HANDLED
The exit has overridden the supplied internal data value

Comments:

This exit gives you the opportunity to override the internal data value created during the execution of the application. data_ptr addresses the memory assigned to the internal data value. 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 request handler will subsequently perform default mapping for the original (IDP_EXIT_CONTINUE) or overridden (IDP_EXIT_HANDLED) internal data value.

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.

Previous Topic Next topic Print topic