DataBlade API Programmer's Manual Chapter 12: DataBlade API Function Descriptions

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MI_FUNC_DESC *mi_td_cast_get(conn, from_tdesc, to_tdesc, cast_status)

		MI_CONNECTION *conn;

		MI_TYPE_DESC *from_tdesc;

		MI_TYPE_DESC *to_tdesc;

		mi_char *cast_status; 


conn
is the connection descriptor.

from_tdesc
is the type descriptor of the original data type, including length and precision.

to_tdesc
is the type descriptor of the data type to which the original data type is being cast.

cast_status
is an output parameter set by mi_cast_get(). Possible cast_status values follow:


MI_ERROR_CAST
The mi_cast_get() function failed.


MI_NO_CAST
No casting routine exists between the two specified types. The user must write a function in order to cast.


MI_NOP_CAST
No casting routine exists between the two types. The user can cast directly without writing a function.


MI_SYSTEM_CAST
Casting is between built-in types.


MI_UDR_CAST
A user-defined routine exists for casting between the specified types.


MI_EXPLICIT_CAST
The cast is explicit.


MI_IMPLICIT_CAST
The cast is implicit.





 



Valid in Client Application?

Valid in Server Routine?

Yes
Yes