// Copyright (c) 2007-2009 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

 @publishedPartner

*/

#include "cmtpdeltadatamgr.h"

//! Size of a PUID in bytes

static const TInt KMTPPuidSize = 16;

_LIT(KMTPDeltaDataTable, "MTPDeltaDataTable");

_LIT(KSQLPuidIndexName, "PuidIndex");

_LIT(KSQLIdentifierIndexName, "IdentifierIndex");

_LIT(KAnchorIdTable, "AnchorIdTable");

_LIT (KDeleteDeltaTable, "DELETE FROM MTPDeltaDataTable");

/**

Standard c++ constructor

*/	

CMtpDeltaDataMgr::CMtpDeltaDataMgr(RDbDatabase& aDatabase)

	:iDatabase(aDatabase)

 	{

 	}

/**

Second-phase construction

@leave One of the system wide error codes, if a processing failure occurs.

*/	

void CMtpDeltaDataMgr::ConstructL()

	{

	}

/**

Two-phase construction

@param aDatabase	The reference to the database object

@return	pointer to the created CMtpDeltaDataMgr instance

*/

CMtpDeltaDataMgr* CMtpDeltaDataMgr::NewL(RDbDatabase& aDatabase)

	{

	CMtpDeltaDataMgr* self = new (ELeave) CMtpDeltaDataMgr(aDatabase);

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop(self);

	return self;

	}

/**

Destructor

*/	

CMtpDeltaDataMgr::~CMtpDeltaDataMgr()

	{

	iDeltaTableBatched.Close();

	iAnchorTableBatched.Close();

	iView.Close();

	iSuidIdArray.Close();

	}

/**

Create the MTP Delta Data Table

@leave One of the system wide error codes, if a processing failure occurs.

*/

EXPORT_C void CMtpDeltaDataMgr::CreateDeltaDataTableL()

	{

	iDeltaTableBatched.Close();

	if(!DBUtility::IsTableExistsL(iDatabase, KMTPDeltaDataTable))

		{

		_LIT(KSQLCreateMTPDeltaDataTableText,"CREATE TABLE MTPDeltaDataTable (SuidId BIGINT , OpCode TINYINT )");		

		if(!DBUtility::IsIndexExistsL(iDatabase, KMTPDeltaDataTable, KSQLPuidIndexName))

			{

			_LIT(KSQLCreateReferenceIndexText,"CREATE UNIQUE INDEX PuidIndex on MTPDeltaDataTable (SuidId)");

			}

		}

	iDeltaTableBatched.Open(iDatabase, KMTPDeltaDataTable, RDbRowSet::EUpdatable);

	}

/**

Create the Anchor Id Table anchor Id will be stored here

@leave One of the system wide error codes, if a processing failure occurs.

*/

EXPORT_C void CMtpDeltaDataMgr::CreateAnchorIdTableL()

	{

	iAnchorTableBatched.Close();

	if(!DBUtility::IsTableExistsL(iDatabase, KAnchorIdTable))

		{

		_LIT(KSQLCreateAnchorIdTableText,"CREATE TABLE AnchorIdTable (anchorid INTEGER, curindex INTEGER, identifier INTEGER)");

		if(!DBUtility::IsIndexExistsL(iDatabase, KAnchorIdTable, KSQLIdentifierIndexName))

			{

			_LIT(KSQLCreateRefIndexText,"CREATE UNIQUE INDEX IdentifierIndex on AnchorIdTable (identifier)");

			}

		}

	iAnchorTableBatched.Open(iDatabase, KAnchorIdTable, RDbRowSet::EUpdatable);

	}

/**

Add a new anchor ID to the AnchorIdTable

@param aAnchorId The anchor ID

@param aIdentifier The identifier of the anchor

@leave One of the system wide error codes, if a processing failure occurs.

*/	

EXPORT_C void CMtpDeltaDataMgr::InsertAnchorIdL(TInt aAnchorId, TInt aIdentifier)

	{

	iAnchorTableBatched.SetIndex(KSQLIdentifierIndexName);

	if(!(iAnchorTableBatched.SeekL(aIdentifier)))

		{

		iAnchorTableBatched.InsertL();

		iAnchorTableBatched.SetColL(1, aAnchorId);

		iAnchorTableBatched.SetColL(2, 0);

		iAnchorTableBatched.SetColL(3, aIdentifier);

		iAnchorTableBatched.PutL();

		}

	}

/**

Overwrite the anchor Id with new one

@param aAnchorId The new anchor ID

@param aIdentifier The identifier of the anchor

@leave One of the system wide error codes, if a processing failure occurs.

*/	

EXPORT_C void CMtpDeltaDataMgr::UpdateAnchorIdL(TInt aAnchorId, TInt aIdentifier)

	{

	iAnchorTableBatched.SetIndex(KSQLIdentifierIndexName);

	if(iAnchorTableBatched.SeekL(aIdentifier))

		{

		iAnchorTableBatched.UpdateL();

		iAnchorTableBatched.SetColL(1, aAnchorId);

		iAnchorTableBatched.PutL();

		}

	}

/**

Get the anchor ID with specified identifier

@param aIdentifier The identifier of the anchor

@leave One of the system wide error codes, if a processing failure occurs.

*/	

EXPORT_C TInt CMtpDeltaDataMgr::GetAnchorIdL(TInt aIdentifier)

	{

	TInt anchorId = 0;

	iAnchorTableBatched.SetIndex(KSQLIdentifierIndexName);

	if(iAnchorTableBatched.SeekL(aIdentifier))

		{

		iAnchorTableBatched.GetL();

		anchorId = iAnchorTableBatched.ColInt32(1);

		}

	return anchorId;

	}

/**

Overwrite the old index  with new one

@leave One of the system wide error codes, if a processing failure occurs.

*/	

EXPORT_C void CMtpDeltaDataMgr::UpdatePersistentIndexL(TInt aCurindex, TInt aIdentifier)

	{	

	iAnchorTableBatched.SetIndex(KSQLIdentifierIndexName);

	if(iAnchorTableBatched.SeekL(aIdentifier))

		{

		iAnchorTableBatched.UpdateL();

		iAnchorTableBatched.SetColL(2, aCurindex);

		iAnchorTableBatched.PutL();

		}

	}

/**

returns the stored index 

@leave One of the system wide error codes, if a processing failure occurs.

*/

EXPORT_C TInt CMtpDeltaDataMgr::GetPersistentIndexL(TInt aIdentifier)

	{

	TInt currIndex = 0;

	iAnchorTableBatched.SetIndex(KSQLIdentifierIndexName);

	if(iAnchorTableBatched.SeekL(aIdentifier))

		{

		iAnchorTableBatched.GetL();

		currIndex = iAnchorTableBatched.ColInt32(2);

	return currIndex;

	}

/**

Add the Opcode and SuidId to the MTPDeltaDataTable

@param aSuidId The suid identifier of the object to be added

@param aOpCode operation code 

@leave  One of the system wide error codes, if a processing failure occurs.

*/

void CMtpDeltaDataMgr::UpdateDeltaDataTableL(TInt64 aSuidId, TOpCode aOpCode)

	{

	if(!DBUtility::IsTableExistsL(iDatabase, KMTPDeltaDataTable))

		return;

	iDeltaTableBatched.SetIndex(KSQLPuidIndexName);

	if(iDeltaTableBatched.SeekL(aSuidId))

		{

		iDeltaTableBatched.UpdateL();

		iDeltaTableBatched.SetColL(2, aOpCode);

		}

	else

		{

		iDeltaTableBatched.InsertL();

		iDeltaTableBatched.SetColL(1, aSuidId);

		iDeltaTableBatched.SetColL(2, aOpCode);

		}

	iDeltaTableBatched.PutL();

	}

/**

@param total number of items to be  filled into aModifiedPuidIdArray and aDeletedPuidArray

@param the start position 

@param reference to modifed and deleted mtp arrays 

@return Number of remaining items to be retrieved from table

@leave One of the system wide error codes, if a processing failure occurs.

*/

EXPORT_C TInt CMtpDeltaDataMgr::GetChangedPuidsL(TInt aMaxArraySize, TInt& aPosition, CMTPTypeArray& aModifiedPuidIdArray, CMTPTypeArray& aDeletedPuidArray)

	{

	if(!iNeedToSendMore)

		{

		_LIT(KSQLGetAll, "SELECT * FROM MTPDeltaDataTable");

		iNeedToSendMore = ETrue;

		iView.FirstL();

		iTotalRows = iView.CountL();

		if(aPosition !=0 && aPosition < iTotalRows)

			{

			for(TInt i=0; i<aPosition; i++)

				{

				iView.NextL();

				}

			}

		}

	if(iTotalRows == 0 || aPosition >= iTotalRows)

		{

		iNeedToSendMore = EFalse;

		iView.Close();

		return 0;

		}

	TInt64 suidId = 0;

	TInt64 puidlow = 1;

	TBuf8<KMTPPuidSize> puidBuffer;

	for(TInt count=0;count <aMaxArraySize && iView.AtRow();count++)

		{

		iView.GetL();

		//Get the data from the current row

		suidId = iView.ColInt64(1);

		TInt8 opCode = iView.ColInt8(2);	

		puidBuffer.Copy(TPtrC8((const TUint8*)&suidId, sizeof(TInt64)));

		puidBuffer.Append(TPtrC8((const TUint8*)&puidlow, sizeof(TInt64)));

		TMTPTypeUint128 puid(puidBuffer);

		if(opCode  == EDeleted)

			{

			aDeletedPuidArray.AppendL(puid);

			}

		else

			{

			aModifiedPuidIdArray.AppendL(puid);

			}

		aPosition++;

		if(aPosition == iTotalRows)

			{

			iNeedToSendMore = EFalse;

			iView.Close();

			break;	

			}

		else

			{

			//Move to the next row

			iView.NextL();

			}

		}

	return	(iTotalRows - aPosition);

	}

/**

@param total number of items to be  filled into aAddedPuidIdArray

@param reference to added mtp arrays 

@return Number of remaining items to be retrieved from table

@leave One of the system wide error codes, if a processing failure occurs.

*/

EXPORT_C TInt CMtpDeltaDataMgr::GetAddedPuidsL(TInt aMaxArraySize, TInt &aPosition, CMTPTypeArray& aAddedPuidIdArray)

	{

	if(!iNeedToSendMore)

		{

		TInt opcode = EAdded;

		_LIT(KSQLSelectAdded, "SELECT * FROM MTPDeltaDataTable WHERE OpCode = %d");

		iSqlStatement.Format(KSQLSelectAdded, opcode);

		iNeedToSendMore = ETrue;

		iView.FirstL();

		iTotalRows = iView.CountL();

		if(aPosition !=0 && aPosition < iTotalRows)

			{

			for(TInt i=0; i<aPosition; i++)

				{

				iView.NextL();

				}

			}

		}

	if(iTotalRows == 0 || aPosition >= iTotalRows)

		{

		iNeedToSendMore = EFalse;

		iView.Close();

		return 0;

		}

	TInt64 suidId = 0;

	TInt64 puidlow = 1;

	TBuf8<KMTPPuidSize> puidBuffer;

	for(TInt count=0;count <aMaxArraySize && iView.AtRow();count++)

		{

		iView.GetL();

		//Get the data from the current row

		suidId = iView.ColInt64(1);

		puidBuffer.Copy(TPtrC8((const TUint8*)&suidId, sizeof(TInt64)));

		puidBuffer.Append(TPtrC8((const TUint8*)&puidlow, sizeof(TInt64)));

		TMTPTypeUint128 puid(puidBuffer);

		aAddedPuidIdArray.AppendL(puid);

		aPosition++;

		if(aPosition == iTotalRows)

			{

			iNeedToSendMore = EFalse;

			iView.Close();

			break;	

			}

		else

			{

			//Move to the next row

			iView.NextL();		

			}

		}

	return 	(iTotalRows - aPosition);

	}

/**

@param total number of items to be  filled into aAddedPuidIdArray

@param reference to deleted mtp arrays 

@return Number of remaining items to be retrieved from table

@leave One of the system wide error codes, if a processing failure occurs.

*/

EXPORT_C TInt CMtpDeltaDataMgr::GetDeletedPuidsL(TInt aMaxArraySize, TInt &aPosition, CMTPTypeArray& aDeletedPuidIdArray)

	{

	if(!iNeedToSendMore)

		{

		TInt opcode = EDeleted;

		_LIT(KSQLSelectDeleted, "SELECT * FROM MTPDeltaDataTable WHERE OpCode = %d");

		iSqlStatement.Format(KSQLSelectDeleted, opcode);

		iNeedToSendMore = ETrue;

		iView.FirstL();

		iTotalRows = iView.CountL();

		if(aPosition !=0 && aPosition < iTotalRows)

			{

			for(TInt i=0; i<aPosition; i++)

				{

				iView.NextL();

				}

			}

		}

	if(iTotalRows == 0 || aPosition >= iTotalRows)

		{

		iNeedToSendMore = EFalse;

		iView.Close();

		return 0;

		}

	TInt64 suidId = 0;

	TInt64 puidlow = 1;

	TBuf8<KMTPPuidSize> puidBuffer;

	for(TInt count=0;count <aMaxArraySize && iView.AtRow();count++)

		{

		iView.GetL();

		//Get the data from the current row

		suidId = iView.ColInt64(1);

		puidBuffer.Copy(TPtrC8((const TUint8*)&suidId, sizeof(TInt64)));

		puidBuffer.Append(TPtrC8((const TUint8*)&puidlow, sizeof(TInt64)));

		TMTPTypeUint128 puid(puidBuffer);

		aDeletedPuidIdArray.AppendL(puid);

		aPosition++;

		if(aPosition == iTotalRows)

			{

			iNeedToSendMore = EFalse;

			iView.Close();

			break;	

			}

		else

			{

			//Move to the next row

			iView.NextL();		

			}

		}

	return 	(iTotalRows - aPosition);

	}

/**

@param total number of items to be  filled into aAddedPuidIdArray

@param reference to Modified mtp arrays 

@return Number of remaining items to be retrieved from table

@leave One of the system wide error codes, if a processing failure occurs.

*/

EXPORT_C TInt CMtpDeltaDataMgr::GetModifiedPuidsL(TInt aMaxArraySize, TInt &aPosition, CMTPTypeArray& aModifiedPuidIdArray)

	{

	if(!iNeedToSendMore)

		{

		TInt opcode = EModified;

		_LIT(KSQLSelectModified, "SELECT * FROM MTPDeltaDataTable WHERE OpCode = %d");

		iSqlStatement.Format(KSQLSelectModified, opcode);