--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/filemanager/bkupengine/inc/CMMCScBkupTransferReadRequest.h	Mon Jan 18 20:09:41 2010 +0200
@@ -0,0 +1,223 @@
+/*
+* Copyright (c) 2005 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: Declaration for CMMCScBkupReadDataTransferRequestBase
+*     
+*
+*/
+
+#ifndef __CMMCSCBKUPTRANSFERREADREQUEST_H__
+#define __CMMCSCBKUPTRANSFERREADREQUEST_H__
+
+// User includes
+#include "MMCScBkupConfig.h"
+#include "MMCScBkupSBEUtils.h"
+#include "TMMCScBkupOwnerDataType.h"
+#include "CMMCScBkupDataOwnerInfo.h"
+#include "CMMCScBkupTransferRequest.h"
+#include "CMMCScBkupIndexWithIdentifier.h"
+
+// Classes referenced
+class MMMCScBkupDriver;
+class CMMCScBkupArchiveFooter;
+
+// Constants
+const TInt KMMCScBkupDefaultChunkReadSize = 4096; // 4k read chunks
+
+// CMMCScBkupIndexEntry
+
+/**
+*
+*
+* @since 3.0
+*/
+NONSHARABLE_CLASS(CMMCScBkupReadDataTransferRequestBase) : public CMMCScBkupTransferRequestBase
+    {
+    public:
+
+        /**
+        * C++ destructor
+        */
+        ~CMMCScBkupReadDataTransferRequestBase();
+
+    protected:
+
+        /**
+        * C++ default constructor
+        */
+        CMMCScBkupReadDataTransferRequestBase( MMMCScBkupDriver& aDriver, 
+                                               TMMCScBkupOwnerDataType aElementType,
+                                               TInt aChunkSize = KMMCScBkupDefaultChunkReadSize,
+                                               TInt aPriority = CActive::EPriorityIdle );
+
+    public: // API
+
+        /**
+        *
+        */
+        void RequestL( CMMCScBkupDataOwnerInfo& aOwner, TRequestStatus& aObserver, const RArray<TMMCScBkupArchiveDriveAndVector>& aEntries );
+
+    protected: // New Framework API
+
+        /**
+        *
+        */
+        virtual CSBGenericTransferType* PrepareTransferTypeL( const CSBGenericDataType& aGeneric, 
+            TDriveNumber aDrive, TInt aVersion ) const = 0;
+
+    private: // From CMMCScBkupTransferRequest
+        TBool ProcessChunkOfDataL();
+        void PrepareDataTransferL();
+
+    private: // Internal methods
+
+        /**
+        *
+        */
+        void ReadChunkL( TDes8& aSink, TInt aLength );
+
+        /**
+        *
+        */
+        TBool DoProcessChunkOfDataL();
+
+        /**
+        *
+        */
+        TBool PrepareForNextEntry();
+
+        /**
+        *
+        */
+        TDriveNumber CurrentDrive() const;
+
+        /**
+        *
+        */
+        const TMMCScBkupArchiveVector& CurrentReadInfo() const;
+
+        /**
+        *
+        */
+        const TMMCScBkupArchiveDriveAndVector& CurrentEntry() const;
+        
+        /**
+        *
+        */
+        inline TInt CurrentOffset() const { return iCurrentOffset; }
+
+    private: // From CActive
+        TInt RunError( TInt aError );
+
+    private: // Debugging support
+
+        /**
+        *
+        */
+#ifdef DEBUGGING_DATA_TRANSFER
+        void DumpTransferDataL( RFs& aFsSession, const TDesC8& aData ) const;
+#endif
+
+    private: // Member data
+
+        // Owned externally
+        //
+        const RArray<TMMCScBkupArchiveDriveAndVector>* iEntries;
+
+        // Owned by this object
+
+        // Pointer to the SBE's shared chunk. It *must* be a reference
+        // because otherwise the SBE loses track of what we actually write
+        // to the chunk!
+        TPtr8* iTransferChunkPointer;
+        //
+        const TInt iReadChunkSize;
+        //
+        TInt iCurrentIndex;
+        //
+        TBool iFinishedSupplyingData;
+        //
+        CSBGenericTransferType* iTransferType;
+        //
+        TInt iCurrentOffset;
+        //
+        HBufC8* iTemporaryTransferSink;
+    };
+
+
+
+
+
+
+
+
+
+/**
+*
+*
+* @since 3.0
+*/
+template <class Type>
+class CMMCScBkupReadDataTransferRequest : public CMMCScBkupReadDataTransferRequestBase
+    {
+    public: // Construction
+
+        /**
+        *
+        */
+        inline static CMMCScBkupReadDataTransferRequest* NewL( MMMCScBkupDriver& aDriver, 
+                                                        TMMCScBkupOwnerDataType aElementType,
+                                                        Type aTransferEnumType,
+                                                        TInt aChunkSize = KMMCScBkupDefaultChunkReadSize,
+                                                        TInt aPriority = CActive::EPriorityIdle )
+            {
+            CMMCScBkupReadDataTransferRequest<Type>* self = new(ELeave) CMMCScBkupReadDataTransferRequest<Type>( aDriver, aElementType, aTransferEnumType, aChunkSize, aPriority );
+            return self;
+            }
+
+    private: // Internal construction
+
+        /**
+        * C++ default constructor
+        */
+        inline CMMCScBkupReadDataTransferRequest( MMMCScBkupDriver& aDriver, 
+                                           TMMCScBkupOwnerDataType aElementType,
+                                           Type aTransferEnumType,
+                                           TInt aChunkSize = KMMCScBkupDefaultChunkReadSize,
+                                           TInt aPriority = CActive::EPriorityIdle )
+        :   CMMCScBkupReadDataTransferRequestBase( aDriver, aElementType, aChunkSize, aPriority), 
+            iTransferEnumType( aTransferEnumType )
+            {
+            }
+
+    private: // From CMMCScBkupTransferRequest
+        inline CSBGenericTransferType* PrepareTransferTypeL( const CSBGenericDataType& aGeneric, 
+            TDriveNumber aDrive, TInt aVersion ) const
+            {
+            CSBGenericTransferType* transferType = MMCScBkupSBEUtils::TransferTypeLC( aGeneric, aDrive, 
+                iTransferEnumType, aVersion );
+            CleanupStack::Pop( transferType );
+            return transferType;
+            }
+
+    private: // Member data
+
+        //
+        Type iTransferEnumType;
+    };
+
+
+
+#endif // __CMMCSCBKUPTRANSFERREADREQUEST_H__
+
+// End of File