--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/persistentstorage/sql/SRC/Server/SqlSrvBlob.h	Fri Jan 22 11:06:30 2010 +0200
@@ -0,0 +1,72 @@
+// Copyright (c) 2008-2009 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 __SQLSRVBLOB_H__
+#define __SQLSRVBLOB_H__
+
+#include <s32buf.h>
+
+//Forward declarations
+struct sqlite3_blob;
+
+/**
+Stream buffer class with no intermediate buffering capabilities.
+
+The primary purpose of this class is:
+ - to read/write from/to a blob column using sqlite3_blob_read()/sqlite3_blob_write() SQLite functions;
+ - to serve as an IPC buffer for streaming the blob content from/to the client side dll;
+ 
+The class overrides the following virtual MStreamBuf functions:
+ - DoRelease();
+ - DoSynchL();
+ - DoReadL();
+ - DoWriteL();
+ - DoSeekL();
+
+@internalComponent
+*/
+NONSHARABLE_CLASS(HBlobBuf) : public MStreamBuf
+	{
+public: 
+	enum TMode 
+		{
+		EReadOnly,
+		EReadWrite
+		};
+
+public: 
+	static HBlobBuf* NewL(sqlite3* aDb, const TDesC8& aDbName, const TDesC8&  aTableName, const TDesC8&  aColumnName, TInt64 aRowId, TMode aMode);
+		
+private:
+	HBlobBuf();
+	void ConstructL(sqlite3* aDb, const TDesC8& aDbName, const TDesC8& aTableName, const TDesC8& aColumnName, TInt64 aRowId, TMode aMode);
+	
+	virtual void DoRelease();
+	virtual void DoSynchL();
+	virtual TInt DoReadL(TAny* aPtr, TInt aMaxLength);
+	virtual void DoWriteL(const TAny* aPtr, TInt aLength);
+	virtual TStreamPos DoSeekL(MStreamBuf::TMark aMark, TStreamLocation aLocation, TInt aOffset);
+
+	sqlite3_blob* BlobHandleL();
+
+private:
+	sqlite3_blob*	iBlobHandle;
+	TInt 			iBlobSize;
+	TInt			iWrPos;
+	TInt			iRdPos;
+	
+	};
+
+#endif//__SQLSRVBLOB_H__