Obtain information from a function descriptor
You can use the following DataBlade®
API functions
to obtain additional information about the UDR or cast function that
is associated with a function descriptor.
| DataBlade API function | Description |
|---|---|
| mi_fparam_get() | Returns a pointer to the MI_FPARAM structure that is associated with the function descriptor |
| mi_routine_id_get() | Returns the identifier for the UDR or cast function |
| mi_func_commutator() | Determines if the UDR has a commutator function |
| mi_func_handlesnulls() | Determines whether the UDR or cast function handles NULL arguments |
| mi_func_isvariant() | Determines if the UDR or cast function is a variant function |
| mi_func_negator() | Determines if the UDR has a negator function |