// 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:

//

#include "msvcacheentry.h"

/**

 * NewLC()

 * @param None.

 * @return CMsvCacheEntry* : a handle to a new cache entry.

 * 

 * 

 */

CMsvCacheEntry* CMsvCacheEntry::NewLC()

	{

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

	CleanupStack::PushL(self);

	self->ConstructL();

	return self;

	}

/**

 * NewL()

 * @param None.

 * @return CMsvCacheEntry* : a handle to a new cache entry.

 * 

 * 

 */

CMsvCacheEntry* CMsvCacheEntry::NewL()

	{

	CMsvCacheEntry* self = NewLC();

	CleanupStack::Pop(self);

	return self;

	}

/**

 * ConstructL()

 * @param None.

 * @return None.

 * 

 * Second phase construction.

 */

void CMsvCacheEntry::ConstructL()

	{

	}

/**

 * CMsvCacheEntry()

 * @param None.

 * @return None.

 * 

 * Constructor.

 */

CMsvCacheEntry::CMsvCacheEntry()

	{

	}

/**

 * ~CMsvCacheEntry()

 * @param None.

 * @return None.

 * 

 * Destructor.

 */

CMsvCacheEntry::~CMsvCacheEntry()

	{

	delete iDescriptionBuffer;

	delete iDetailsBuffer;

	if(iChildIdArray)

		{

		iChildIdArray->Close();

		delete iChildIdArray;

		iChildIdArray = NULL;

		}

	}

/**

 * ResetEntry()

 * @param None.

 * @return None.

 * 

 * The function resets a cache entry to zero/default values.

 */

void CMsvCacheEntry::ResetEntry()

	{

	delete iDescriptionBuffer;

	iDescriptionBuffer = NULL;

	delete iDetailsBuffer;

	iDetailsBuffer = NULL;

	iEntry = TMsvEntry();

	iFlags = EMsvServerEntryClearFlag;

	iStoreReaderCount = 0;

	if(iChildIdArray)

		{

		iChildIdArray->Close();

		delete iChildIdArray;

		iChildIdArray = NULL;

		}

	}

/**

 * SetEntryL()

 * @param TMsvEntry& : the TMsvEntry with the details to be copied to the cache entry.

 * @return None.

 * 

 * The function sets the TMsvEntry, iDescription and iDetails fields of the cache entry

 * to that of the passed entry.

 */

void CMsvCacheEntry::SetEntryL(TMsvEntry& aEntry)

	{

	iEntry = aEntry;

	if(!iDescriptionBuffer)

		{

		iDescriptionBuffer = aEntry.iDescription.AllocL();

		}

	else if (aEntry.iDescription.Length() > iDescriptionBuffer->Des().MaxLength())

		{

		iDescriptionBuffer = iDescriptionBuffer->ReAllocL(aEntry.iDescription.Length());

		}

	if(!iDetailsBuffer)

		{

		iDetailsBuffer = aEntry.iDetails.AllocL();

		}

	else if (aEntry.iDetails.Length() > iDetailsBuffer->Des().MaxLength())

		{

		iDetailsBuffer = iDetailsBuffer->ReAllocL(aEntry.iDetails.Length());

		}

	*iDescriptionBuffer = aEntry.iDescription;

	*iDetailsBuffer = aEntry.iDetails;

	iEntry.iDescription.Set(*iDescriptionBuffer);

	iEntry.iDetails.Set(*iDetailsBuffer);

	}

/*

 * DupNDestroyL()

 * 

 */

void CMsvCacheEntry::DupNDestroyL(CMsvCacheEntry*& aEntry)

	{

	SetEntryL(aEntry->Entry());

	iFlags = aEntry->iFlags;

	iStoreReaderCount = aEntry->iStoreReaderCount;

	iLastChange = aEntry->iLastChange;

	iCreated = aEntry->iCreated;

	iOwnerId = aEntry->iOwnerId;

	iChildIdArray = aEntry->iChildIdArray;

	aEntry->iChildIdArray = NULL;

	}

/**

 * LockEntry()

 * @param None.

 * @return TInt : KErrNone on success, KErrLocked if the entry is already locked.

 * 

 * The function locks the cache entry if not already locked.

 */

TInt CMsvCacheEntry::LockEntry()

	{

	if (IsEntryLocked())

		{

		return KErrLocked;

		}

	iFlags |= EMsvServerEntryLockFlag;

	return KErrNone;

	}

/**

 * LockStore()

 * @param None.

 * @return TInt : KErrNone on success, KErrLocked if the store entry is already locked.

 * 

 * The function locks the store entry if not already locked.

 */

TInt CMsvCacheEntry::LockStore()

	{

	if (IsStoreLocked())

		{

		return KErrLocked;

		}

	iFlags |= EMsvServerEntryStoreLockFlag;

	return KErrNone;

	}

/**

 * LockEntryAndStore()

 * @param None.

 * @return TInt : KErrNone on success, KErrLocked if the store and cache entry is already locked.

 * 

 * The function locks the store and cache entry if not already locked.

 */

TInt CMsvCacheEntry::LockEntryAndStore()

	{

	if (IsEntryOrStoreLocked())

		{

		return KErrLocked;

		}

	iFlags |= (EMsvServerEntryStoreLockFlag | EMsvServerEntryLockFlag);

	return KErrNone;

	}

/**

 * CopyEntryL()

 * @param const TMsvEntry& : the entry to be changed to.

 * @param TBool& : output parameter set to ETrue if any private details (iDesciption

 * 				   and iDetails) have been changed.

 * @return None.

 * 

 * The function copies details from the passed TMsvEntry to the cache entry's TMsvEntry.

 * It reallocates buffer sizes if there is difference between them.

 */

void CMsvCacheEntry::CopyEntryL(const TMsvEntry& aEntry, TBool& aChangedPrivateInfo)

	{

	TBool changeDes = (aEntry.iDescription!=*iDescriptionBuffer);

	TBool changeDet = (aEntry.iDetails!=*iDetailsBuffer);

	aChangedPrivateInfo = changeDes || changeDet;

	//Only increase the buffer size, not shrink so as to allow rollback

	TBool isMemoryAllocationDone = EFalse;

	HBufC* bkpDescriptionBuffer = iDescriptionBuffer;

	if (changeDes && aEntry.iDescription.Length() > iDescriptionBuffer->Des().MaxLength())

		{		

		iDescriptionBuffer = HBufC::NewL(aEntry.iDescription.Length());

		isMemoryAllocationDone = ETrue;

		}

	if (changeDet && aEntry.iDetails.Length() > iDetailsBuffer->Des().MaxLength())

		{

		TRAPD(err, iDetailsBuffer = iDetailsBuffer->ReAllocL(aEntry.iDetails.Length()));

		if(err)

		    {

		    if(isMemoryAllocationDone)

		        {

		        delete iDescriptionBuffer;

		        iDescriptionBuffer = bkpDescriptionBuffer; 

		        }

		    User::Leave(err);

		    }

		}

	if(isMemoryAllocationDone)

	    {

	    delete bkpDescriptionBuffer;

	    }

	//Copy the data without leaving

	if (changeDes)

		{

		*iDescriptionBuffer = aEntry.iDescription;

		}

	if (changeDet)

		{

		*iDetailsBuffer = aEntry.iDetails;

		}

	iEntry=aEntry;

	iEntry.iDescription.Set(*iDescriptionBuffer);

	iEntry.iDetails.Set(*iDetailsBuffer);

	}

/**

 * RollBackCopyEntry()

 * @param const TMsvEntry& : the entry to be changed to.

 * @return None.

 * 

 * 

 */

void CMsvCacheEntry::RollBackCopyEntry(const TMsvEntry& aEntry)

	{

	__ASSERT_DEBUG(iDescriptionBuffer->Des().MaxLength() >= aEntry.iDescription.Length(), PanicServer(EMsvBadRollBackCopy1));

	__ASSERT_DEBUG(iDetailsBuffer->Des().MaxLength() >= aEntry.iDetails.Length(), PanicServer(EMsvBadRollBackCopy2));

	Mem::Copy(&iEntry, &aEntry, sizeof(TMsvEntry));

	*iDescriptionBuffer = aEntry.iDescription;

	*iDetailsBuffer = aEntry.iDetails;

	iEntry.iDescription.Set(*iDescriptionBuffer);

	iEntry.iDetails.Set(*iDetailsBuffer);

	}