// Copyright (c) 1997-2009 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:

//

#ifndef __AGSSTREAMIDSET_H__

#define __AGSSTREAMIDSET_H__

#include "agsver.h"

#include <s32std.h>

class CAgnCalendarConverter;

//------------------------------ referenced classes --------------------------

class CAgnStreamIdSet : public CBase

/**

@internalAll

@released

*/

	{

public:

	static CAgnStreamIdSet* NewL();

	virtual ~CAgnStreamIdSet();

	void AddL(TStreamId aId);

	void DeleteL(TStreamId aId);

	inline TInt Count() const;

	TStreamId CreateL(CStreamStore& aStore);

	void LoadL(CStreamStore& aStore,TStreamId aStreamId);

	void SaveL(CStreamStore& aStore) const;

	void ResetIteratorToStart();

	TBool Next();

	TBool At(TStreamId& aItem) const;

	TInt Find(TStreamId aItem,TInt& aPos) const;

	void RollbackL();

	void CommitL(CStreamStore& aStore);

	void Reset();

private:

	enum { EGranularity = 16, ERollbackGranularity = 2 };

	TStreamId					iStreamId;

	CArrayFixFlat<TStreamId>*	iArray;

	TInt						iPos;

	CArrayFixFlat<TStreamId>*	iAddRollbackArray;

	CArrayFixFlat<TStreamId>*	iDeleteRollbackArray;

	};

class CAgnModelStreamIdSet : public CBase

/**

@internalAll

@released

*/

	{

public:

	friend class CAgnCalendarConverter; // to allow stream IDs to be loaded from file converter

	static CAgnModelStreamIdSet* NewL();

	virtual ~CAgnModelStreamIdSet();										

	inline const CAgnStreamIdSet& EntryStreamIdSet() const;

	inline CAgnStreamIdSet& EntryStreamIdSet();

	inline const TStreamId& EntrySetStreamId() const;

	inline const TStreamId& NextLocalUidValueStreamId() const;

	inline const TStreamId& EntryManagerStreamId() const;

	inline const TStreamId& FileInformationStreamId() const;

	inline TAgnVersion Version() const;

	void SaveL(CStreamStore& aStore,TStreamId aStreamId) const;

	TStreamId CreateL(CStreamStore& aStore,const TAgnVersion& aVersion);

	void LoadL(CStreamStore& aStore,TStreamId aStreamId);

	void LoadL(CStreamStore& aStore,TStreamId aStreamId, CAgnCalendarConverter& aCalendarConverter);

	void InternalizeL(RReadStream& aStream);

	void ExternalizeL(RWriteStream& aStream) const;

	void RollbackL();

	void CommitL(CStreamStore& aStore);

	void Reset();

	void ChangeFileVersionL(CStreamStore& aStore,TStreamId aStreamId, TAgnVersion& aNewVersion);

protected:

	void ConstructL();

private:

	CAgnStreamIdSet*	iEntryStreamIdSet;	

	TAgnVersion			iVersion;				

	TStreamId			iEntrySetStreamId;	

	TStreamId			iNextLocalUidValueStreamId; 

	TStreamId			iEntryManagerStreamId;

	TStreamId			iFileInformationStreamId;

	};

#include "agsstreamidset.inl"

#endif