/*

* Copyright (c) 2006 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 MCDATABASESTORAGE_H

#define MCDATABASESTORAGE_H

#include <e32base.h>

#include <f32file.h>

#include <d32dbms.h> // RDbNamedDatabase

#include "ncdstoragebase.h"

/**

 * 

 */

class CNcdDatabaseStorage : public CNcdStorageBase

{

    friend CNcdStorageBase* CNcdStorageBase::NewL( 

        RFs&, const TDesC&, const TDesC&, 

        const TDesC& );

    public: // Destructor

         virtual ~CNcdDatabaseStorage();

    protected: // Construction

         static CNcdDatabaseStorage* NewL(

            RFs& aFs,

            const TDesC& aUid,

            const TDesC& aStorageFolder,

            const TDesC& aName );

         CNcdDatabaseStorage( 

            RFs& aFs,

            HBufC* aUid, 

            HBufC* aStorageFolder, 

            HBufC* aName );

         void ConstructL();

    public: // From CNcdStorageBase

         virtual void Compact();

         virtual RDbDatabase::TSize Size() const;

         virtual TInt DoCommit();

    protected: // From CNcdStorageBase

         virtual CNcdStorageItem* CreateStorageItemLC( const TDesC& aUid, TInt aType );

         virtual TBool ItemExistsL( const TDesC& aUid, TInt aType );

         virtual void DoOpenItemL( CNcdStorageItem* aItem );

         virtual void DoRollback();

         virtual void DoRemoveItemL( CNcdStorageItem* aItem );

         virtual void DoReadDataL( CNcdStorageItem* aItem, MNcdStorageDataItem& aDataItem );

         virtual void DoWriteDataL( CNcdStorageItem* aItem, MNcdStorageDataItem& aDataItem );

         virtual void DoOpenL();

         virtual void DoClose();

         virtual void GetAllItemsFromStorageL( RPointerArray<CNcdStorageItemIdentifier>& aItems );

         virtual HBufC8* DoGetDataL( CNcdStorageItem* aItem );

         virtual void DoRemoveItemsL( 

            const RArray<RNcdDatabaseItems>& aDoNotRemoveItems );

    private: // New methods

        TInt CalculateSqlRemovalLength( 

            const RNcdDatabaseItems& aItem ) const;

        inline TBool BeginTransactionL();

        inline TBool CloseTransactionL( TBool aForceClose = EFalse );

        inline void ReadItemDataLC(

            RDbView& aItemData,

            const TDesC& aUid,

            TInt aType,

            RDbRowSet::TAccess aAccess = RDbRowSet::EReadOnly );

        inline void ReadItemDataLC(

            RDbView& aItemData,

            TUint32 aKey,

            RDbRowSet::TAccess aAccess = RDbRowSet::EReadOnly );

        void RecreateDatabaseL();

    private:

        RFs&                    iFs;

        HBufC*                  iDatabaseFileName;

        RDbNamedDatabase        iDb;

        TBool                   iUpdated;

        TInt                    iWastedSpace;

        TInt                    iNewWastedSpace;

    };

class CNcdDatabaseStorageItem : public CNcdStorageItem

    {

    public:

        static CNcdDatabaseStorageItem* NewLC(

            CNcdStorageBase* aStorage,

            const TDesC& aUid,

            TInt aType,

            TUint32 aDbKey = 0 );

        virtual ~CNcdDatabaseStorageItem();

    public:

        void SetDbKey( TUint32 aDbKey );

        TUint32 DbKey() const;

    protected:

        CNcdDatabaseStorageItem( CNcdStorageBase* aStorage, TUint32 aDbKey );

    private:

        TUint32            iDbKey;

    };

#endif