//File: DAISDASimpleIO.idl
// Change history
// DAIS RTF 1.1	6320 2004-10-01	CORBA 3 Home key word collision
// DAIS RTF 1.1	7083 2004-09-09	Corrected error reporting
#ifndef _DAIS_DA_SIMPLE_IO_IDL
#define _DAIS_DA_SIMPLE_IO_IDL
#include <DAISCommon.idl>

module DAIS {
module DataAccess {
module SimpleIO {

enum DataSource { 
    DS_CACHE, 
    DS_DEVICE
};

struct ItemError
{
	Error                   				err;
	ServerItemIdentification        		id;
	string                  				reason;
};														//7083
typedef sequence<ItemError>					ItemErrors; //7083

struct ItemState 
{
	SimpleValue								value;
	DateTime								time_stamp;
	Quality									dais_quality;
	ServerItemIdentification				id;
};
typedef sequence<ItemState>					ItemStates;

struct ItemUpdate
{
	ServerItemIdentification				id;
	SimpleValue								value;
};
typedef sequence<ItemUpdate>				ItemUpdates;

interface IHome			//6320
{

	ItemStates read (
		in	DataSource						data_source,
		in	ServerItemIdentifications		ids,
		out	ItemErrors						errors
    	);

	ItemErrors write_with_qt (
		in	ItemStates						updates
    	);

	ItemErrors write (
		in	ItemUpdates						updates
    	);
};};};};
#endif // _DAIS_DA_SIMPLE_IO_IDL