// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

 // All rights reserved.

 // This component and the accompanying materials are made available

 // under the terms of "Eclipse Public License v1.0"

 // which accompanies this distribution, and is available

 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

 //

 // Initial Contributors:

 // Nokia Corporation - initial contribution.

 //

 // Contributors:

 //

 // Description:

 //

 #if !defined(__CHECKEDUID_H__)

 #define __CHECKEDUID_H__

 #include <pcstore/pcstoredef.h>

 #include <pcstore/uid.h>

 namespace PCStore

 {

 class CDes8;

 /**

 @internalComponent

 Encapsulates a set of three unique identifiers (UIDs) which, in combination, 

 identify a system object such as a GUI application or a DLL. The three

 component UIDs are referred to as UID1, UID2 and UID3.

 An object of this type is referred to as a compound identifier or a UID type.

 */

 class TUidType

 	{

 public:

 	TUidType();

 	TUidType(TUid aUid1);

 	TUidType(TUid aUid1, TUid aUid2);

 	TUidType(TUid aUid1, TUid aUid2, TUid aUid3);

 	TBool operator !=(const TUidType& aUidType) const;

 	TBool operator ==(const TUidType& aUidType) const ;

 	const TUid& operator[](TInt aIndex) const;

 	TBool IsValid() const ;

 private:

 	TUid MostDerived() const;

 private:

 	TUid iUid[3];

 	};

 /**

 @internalComponent

 Packages a Uid type together with a checksum.

 @see TUidType

 */

 class TCheckedUid

 	{

 public:

 	TCheckedUid();

 	TCheckedUid(const TUidType& aUidType);

 	TCheckedUid(const CDes8& aDes);

 	void Set(const TUidType& aUidType);

 	void Set(const CDes8& aDes);

 	CDes8 Des() const;

 	const TUidType&  UidType() const;

 private:

 	TUint Check() const;

 private:

 	TUidType iType;

 	TUint32 iCheck;

 	};

 class CStoreWriteStream;

 CStoreWriteStream& operator<<(CStoreWriteStream& aStream,const TCheckedUid& aUid);

 class CStoreReadStream;

 CStoreReadStream& operator>>(CStoreReadStream& aStream, TCheckedUid& aUid);

 }

 #endif // !defined(__CHECKEDUID_H__)