filemanager/bkupengine/inc/CMMCScBkupIndexWithIdentifier.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 18 Jan 2010 20:09:41 +0200
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/*
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* Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0""
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: Declaration for CMMCScBkupIndexWithIdentifier
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*     
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*
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*/
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#ifndef __CMMCSCBKUPINDEXWITHIDENTIFIER_H__
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#define __CMMCSCBKUPINDEXWITHIDENTIFIER_H__
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// User includes
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#include "CMMCScBkupIndexBase.h"
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#include "TMMCScBkupOwnerDataType.h"
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#include "TMMCScBkupArchiveVector.h"
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#include "MMMCScBkupArchiveDataInterface.h"
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/**
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*
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*
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* @since 3.0
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*/
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template < class TIdentifier >
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class CMMCScBkupIndexEntry : public CBase
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    {
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    public:
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        inline static CMMCScBkupIndexEntry* NewLC( const TIdentifier& aIdentifier )
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            {
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            CMMCScBkupIndexEntry* self = new(ELeave) CMMCScBkupIndexEntry( aIdentifier );
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            CleanupStack::PushL( self );
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            return self;
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            }
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        inline static CMMCScBkupIndexEntry* NewLC( RReadStream& aStream )
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            {
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            CMMCScBkupIndexEntry* self = new(ELeave) CMMCScBkupIndexEntry();
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            CleanupStack::PushL( self );
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            aStream >> *self;
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            return self;
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            }
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       inline ~CMMCScBkupIndexEntry()
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            {
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            iAssociatedData.Close();
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            }
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    private:
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        inline CMMCScBkupIndexEntry()
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            {
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            }
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        inline CMMCScBkupIndexEntry( const TIdentifier& aIdentifier )
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            : iIdentifier( aIdentifier )
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            {
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            }
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    private: // Internal enumerations
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        enum
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            {
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            EStreamFormatVersion1 = 1
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            };
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    public:// Store & Restore
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        inline void InternalizeL( RReadStream& aStream )
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            {
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            aStream.ReadInt32L(); // EStreamFormatVersion1
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            aStream.ReadInt32L(); // spare1
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            aStream.ReadInt32L(); // spare2
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            aStream.ReadInt32L(); // spare3
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            //
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            iIdentifier = aStream.ReadInt32L();
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            //
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            const TInt count = aStream.ReadInt32L();
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            for(TInt i=0; i<count; i++)
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                {
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                TMMCScBkupArchiveDriveAndVector entry;
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                aStream >> entry;
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                //
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                iAssociatedData.AppendL( entry );
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                }
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            }
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        inline void ExternalizeL( RWriteStream& aStream ) const
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            {
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            aStream.WriteInt32L( EStreamFormatVersion1 );
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            aStream.WriteInt32L( 0 ); // spare1
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            aStream.WriteInt32L( 0 ); // spare2
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            aStream.WriteInt32L( 0 ); // spare3
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            //
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            aStream.WriteInt32L( iIdentifier );
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            //
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            const TInt count = iAssociatedData.Count();
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            aStream.WriteInt32L(count);
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            //
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            for(TInt i=0; i<count; i++)
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                {
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                const TMMCScBkupArchiveDriveAndVector& entry = iAssociatedData[i];
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                aStream << entry;
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                }
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            }
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    public: // General access
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        inline const TIdentifier& Identifier() const
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            { return iIdentifier; }
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        inline void AddEntryL( const TMMCScBkupArchiveDriveAndVector& aEntry )
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            { iAssociatedData.AppendL(aEntry); }
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        inline TInt Count() const
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            { return iAssociatedData.Count(); }
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        inline const TMMCScBkupArchiveDriveAndVector& Entry(TInt aIndex) const
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            { return iAssociatedData[ aIndex ]; }
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        inline const RArray<TMMCScBkupArchiveDriveAndVector>& Entries() const
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            { return iAssociatedData; }
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    private:
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        /**
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        *
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        */
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        TIdentifier iIdentifier;
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        /**
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        *
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        */
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        RArray<TMMCScBkupArchiveDriveAndVector> iAssociatedData;
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   };
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/**
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*
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*
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* @since 3.0
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*/
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template < class TIdentifier >
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class CMMCScBkupIndexWithIdentifier : public CMMCScBkupIndexBase
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    {
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    public:
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        /**
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        * C++ destructor
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        */
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        inline ~CMMCScBkupIndexWithIdentifier()
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            {
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            iEntries.Close();
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            }
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    protected:
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        /**
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        * C++ default constructor
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        */
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        inline CMMCScBkupIndexWithIdentifier( TMMCScBkupOwnerDataType aType )
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            : CMMCScBkupIndexBase( aType )
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            {
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            }
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    private: // Internal enumerations
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        enum
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            {
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            EStreamFormatVersion1 = 1
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            };
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    public: // API
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        /**
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        *
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        */
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        inline void AddIndexRecordL( const TMMCScBkupArchiveVector& aInfo, TDriveNumber aDrive, const TIdentifier& aIdentifier )
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            {
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            // Locate the parent
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            CMMCScBkupIndexEntry< TIdentifier >& entry = EntryByIdentifierL( aIdentifier );
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            // Create new sub-entry
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            TMMCScBkupArchiveDriveAndVector subItem;
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            subItem.iDrive = aDrive;
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            subItem.iVector = aInfo;
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            // Add it to our index
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            entry.AddEntryL( subItem );
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            }
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        /**
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        *
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        */
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        inline TInt Count() const
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            { return iEntries.Count(); }
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        /**
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        *
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        */
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        inline const CMMCScBkupIndexEntry< TIdentifier >& At( TInt aIndex ) const
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            { return *iEntries[ aIndex ]; }
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        /**
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        *
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        */
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        inline void StoreL(MMMCScBkupDriver& aDriver)
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            {
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            MMMCScBkupArchiveDataInterface& archiveDataInterface = aDriver.DrvADI();
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            RWriteStream stream( archiveDataInterface.ADIWriteStreamUncompressedLC() );
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            //    
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            stream.WriteInt32L( EStreamFormatVersion1 );
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            stream.WriteInt32L( 0 ); // spare1
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            stream.WriteInt32L( 0 ); // spare2
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            stream.WriteInt32L( 0 ); // spare3
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            const TInt count = iEntries.Count();
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            stream.WriteInt32L( count );
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            //
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            for(TInt i=0; i<count; i++)
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                {
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                const CMMCScBkupIndexEntry< TIdentifier > & entry = *iEntries[ i ];
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                stream << entry;
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                }
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            //
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            stream.CommitL();
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            CleanupStack::PopAndDestroy(); // stream
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            // Update our base class info with the offset to the index
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            SetVector( archiveDataInterface.ADICurrentArchiveVectorInfo() );
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            }
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        /**
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        *
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        */
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        inline void RestoreL(MMMCScBkupDriver& aDriver)
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            {
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            MMMCScBkupArchiveDataInterface& archiveDataInterface = aDriver.DrvADI();
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            RReadStream stream( archiveDataInterface.ADIReadStreamUncompressedLC( Vector().Offset() ) );
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            //    
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            stream.ReadInt32L(); // EStreamFormatVersion1 
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            stream.ReadInt32L(); // spare1
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            stream.ReadInt32L(); // spare2
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            stream.ReadInt32L(); // spare3
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            //    
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            const TInt count = stream.ReadInt32L();
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            for(TInt i=0; i<count; i++)
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                {
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                CMMCScBkupIndexEntry< TIdentifier >* entry = CMMCScBkupIndexEntry< TIdentifier >::NewLC( stream );
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                iEntries.AppendL( entry );
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                CleanupStack::Pop( entry );
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                }
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            //
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            CleanupStack::PopAndDestroy(); // stream
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            //
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            if  ( archiveDataInterface.ADICurrentArchiveVectorInfo().Length() > Vector().Length() )
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                {
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                // We've read too much!
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                User::Leave( KErrCorrupt );
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                }
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            }
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    private: // Internal methods
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        /**
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        *
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        */
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        inline CMMCScBkupIndexEntry< TIdentifier >* EntryByIdentifier( const TIdentifier& aIdentifier )
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            {
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            CMMCScBkupIndexEntry< TIdentifier >* ret = NULL;
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            //
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            const TInt count = iEntries.Count();
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            for( TInt i=count-1; i>=0; i-- )
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                {
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                CMMCScBkupIndexEntry< TIdentifier >* entry = iEntries[ i ];
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                if  ( entry->Identifier() == aIdentifier )
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                    {
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                    ret = entry;
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                    break;
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                    }
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                }
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            //
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            return ret;
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            }
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        /**
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        *
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        */
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        inline CMMCScBkupIndexEntry< TIdentifier >& EntryByIdentifierL( const TIdentifier& aIdentifier )
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            {
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            CMMCScBkupIndexEntry< TIdentifier >* ret = EntryByIdentifier( aIdentifier );
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            if  ( !ret )
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                {
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                // Need to make a new entry
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                ret = CMMCScBkupIndexEntry< TIdentifier >::NewLC( aIdentifier );
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                iEntries.AppendL( ret );
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                CleanupStack::Pop( ret );
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                }
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            //
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            return *ret;
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            }
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    private: // Member Data
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        //
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        RMMCScBkupPointerArray< CMMCScBkupIndexEntry< TIdentifier > > iEntries;
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    };
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   323
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#endif // __CMMCSCBKUPINDEXWITHIDENTIFIER_H__
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//End of File