Function GetFdwRoutine

src/backend/foreign/foreign.c:587–601

* GetFdwRoutine - call the specified foreign-data wrapper handler routine * to get its FdwRoutine struct. */

 * to get its FdwRoutine struct.
 */
FdwRoutine *
GetFdwRoutine(Oid fdwhandler)
{
	Datum		datum;
	FdwRoutine *routine;

	datum = OidFunctionCall0(fdwhandler);
	routine = (FdwRoutine *) DatumGetPointer(datum);

	if (routine == NULL || !IsA(routine, FdwRoutine))
		elog(ERROR, "foreign-data wrapper handler function %u did not return an FdwRoutine struct",
			 fdwhandler);

	return routine;
}


/*