/*

* 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 the License "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: 

* Implements an interface to perform asynchronous database operations.

*

*/

/**

 @file

 @internalTechnology

*/

#include "upsdbw.h"

using namespace UserPromptService;

CDecisionDbCompactor::CDecisionDbCompactor():CActive(EPriorityStandard)

/**

	Constructor. 

 */

	{

	CActiveScheduler::Add(this);

	}

CDecisionDbCompactor::~CDecisionDbCompactor()

/**

	Destructor

 */

 	{

 	iDbIncremental.Close();

 	Deque();

 	}

 CDecisionDbCompactor* CDecisionDbCompactor::NewLC()

 /**

	@return A pointer to the newly allocated compactor object, if creation is successful.

	        The pointer is also put onto the cleanup stack.

 */

 	{

 	CDecisionDbCompactor *self = new(ELeave) CDecisionDbCompactor();

 	CleanupStack::PushL(self);

 	return self;

 	}

 EXPORT_C void CDecisionDbCompactor::Compact(TRequestStatus& aStatus)

 /**

 	Performs the asynchronous compaction of the decision database, returning immediately 

 	and signalling the request status when the operation is fully complete.

 	@param aStatus The request status used to contain completion information for the function.

	               On completion, the status value should be interpreted as follows: 

	               0, compaction is complete.< 0, an error code.

  */

 	{

	__ASSERT_ALWAYS(!IsActive(), User::Panic(KDecisionViewPanic,KErrInUse));	

	aStatus = KRequestPending;

	iClientStatus = &aStatus;

	if(iStep() > 0)

		{	

	    iDbIncremental.Next(iStep, iStatus);

		SetActive();

		}

	else

		{

		iDbIncremental.Close();

		User::RequestComplete(iClientStatus,KErrNone);

		}

	}

void CDecisionDbCompactor::DoCancel()

//From CActive

	{

	iDbIncremental.Close();

	if (iClientStatus)

		{

		User::RequestComplete(iClientStatus, KErrCancel);

		}

	}

TInt CDecisionDbCompactor::RunError(TInt aError)

//From CActive

	{

	if (iClientStatus)

		{

		User::RequestComplete(iClientStatus, aError);

		}

	return KErrNone;

	}

void CDecisionDbCompactor::RunL() 

//From CActive

	{

	TInt status = iStatus.Int();

	User::LeaveIfError(status);

	if(iStep() > 0)

		{

		iDbIncremental.Next(iStep, iStatus);

		SetActive();

		}

	else

		{

		iDbIncremental.Close();

		User::RequestComplete(iClientStatus,status);

		}

	}