Micro Focus Server Enterprise Edition for UNIX > Enterprise Server > Enterprise Server Reference > User Exits > Exit Points > Internal Data Value Modification - Input Parameter (Exit Point 2)

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

Syntax:

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

exit_info

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_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. No service will be invoked. An error response will be required
IDP_EXIT_HANDLED: 2 = The exit has overridden the supplied internal value

Comments:

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.