// 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:

//

/**

 @file

 @internalTechnology

*/

#ifndef CMTPREFERENCEMGR_H

#define CMTPREFERENCEMGR_H

#include <e32base.h>

#include <mtp/mmtpreferencemgr.h>

#include "mtpframeworkconst.h"

#include "rmtpframework.h"

class RDbDatabase;

class CMTPObjectStore;

/** 

Implements the MTP reference manager interface.

@internalTechnology

*/

class CMTPReferenceMgr : public CBase, public MMTPReferenceMgr

    {

public:    

    static CMTPReferenceMgr* NewL(CMTPObjectStore& aObjectStore);

    ~CMTPReferenceMgr();

    void RemoveReferencesL(TUint aHandle);

public: // From MMTPReferenceMgr

    CMTPTypeArray* ReferencesLC(const TMTPTypeUint32& aFromHandle) const;

    CDesCArray* ReferencesLC(const TDesC& aParentSuid) const;

    void RemoveReferencesL(const TDesC& aSuid);

    void SetReferenceL(const TDesC& aFromSuid, const TDesC& aToSuid);

    void SetReferencesL(const TDesC& aParentSuid, const CDesCArray& aToSuids);

    void SetReferencesL(const TMTPTypeUint32& aFromHandle, const CMTPTypeArray& aToHandles);

private:

    CMTPReferenceMgr(CMTPObjectStore& aObjectStore);

    void ConstructL();

private:    

    //helpers

    void CreateTableL();

    void CreateIndexL();

    CMTPTypeArray* GetReferencesLC(TUint aHandle) const;

    CDesCArray* GetReferencesInDesLC(TUint aHandle) const;

    void GetReferencesL(TUint aHandle, RArray<TUint>& aToHandles) const;

    void SetReferencesL(TUint aHandle, const RArray<TUint>& aToHandles);

    void SetReferenceL(TUint aHandle, TUint aToHandles);

    //void AdjustReferencesL(RArray<TUint32>& aHandles) const;

	void IncTranOpsNumL();

private: // Owned

    TBuf<KMTPMaxSqlStatementLen>    iSqlStatement;

private: // Not owned

    RDbDatabase*                    iDatabase; 

    CMTPObjectStore&			    iObjectStore;

    mutable RDbTable 				iBatched;

    };

#endif // CMTPREFERENCEMGR_H