// Copyright (c) 2002-2009 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 "LOGDEL.H"

#include "LOGQUERY.H"

#include "logservpanic.h"

#include "LogServDatabaseTransactionInterface.h"

#include "LogServResourceInterpreter.h"

#include "LogServCacheTypes.h"

#include "LogServDatabaseChangeInterface.h"

#include "LogServSqlStrings.h"

CLogDeleteEvent::CLogDeleteEvent(MLogServDatabaseTransactionInterface& aDatabase, TInt aPriority)

: CLogActive(aPriority), iDatabase(aDatabase)

	{

	}

CLogDeleteEvent::~CLogDeleteEvent()

	{

	Cancel();

	}

CLogDeleteEvent* CLogDeleteEvent::NewL(MLogServDatabaseTransactionInterface& aDatabase, TInt aPriority)

	{

	return new (ELeave) CLogDeleteEvent(aDatabase, aPriority);

	}

void CLogDeleteEvent::StartL(TLogId aId, TRequestStatus& aStatus, const RMessage2& aMessage)

	{

	__ASSERT_DEBUG(!IsActive(), Panic(ELogAlreadyActive6));

	iMessage = const_cast<RMessage2*>(&aMessage);	// how to avoid this cast?

	iId = aId;

    Queue(aStatus);

    TRequestStatus* status = &iStatus;

    User::RequestComplete(status, KErrNone);

    SetActive();

	}

void CLogDeleteEvent::DoRunL()

	{

	RLogEventDbTable tbl;

	tbl.OpenLC(iDatabase.DTIDatabase());

    User::LeaveIfError(tbl.SetIndex(KLogNameEventIdx1));

    //Find event

    if(!tbl.SeekL(TDbSeekKey((TInt)iId)))

        {

        iMessage->Complete(KErrNotFound);

        DoCancel();

        User::Leave(KErrNotFound);

        }

    tbl.GetL();

    //Platsec check

    TLogTypeId logTypeId = tbl.ColUint8(RLogEventDbTable::iTypeColNo);

    const TLogServCacheTypeEntry& entry = iDatabase.DTICacheTypes().FindById(logTypeId);

    __ASSERT_DEBUG(entry.iEventTypeId != KLogNullTypeId, Panic(ELogNoEventTypeAtId));

    if(!iDatabase.DTIIsAllowed(EWriteOp, *iMessage, entry.iEventType->Uid()))

        {

        User::Leave(KErrPermissionDenied);

        }

    User::LeaveIfError(iDatabase.DTIBegin());

    //Process duplicates 

    ::LogResetDuplicatesL(iDatabase, iId);

    //Delete the event

    tbl.DeleteL();

    iDatabase.DTIChangeInterface().DCISubmitChangedEventContextL(ELogChangeTypeEventDeleted, iId);

    //

    CleanupStack::PopAndDestroy(&tbl);

	}

void CLogDeleteEvent::DoCancel()

	{

	CLogActive::DoCancel();

	}

void CLogDeleteEvent::DoComplete(TInt& aStatus)

	{

	// Attempt to commit the transaction

	if (iDatabase.DTIInTransaction())

		{

		if (aStatus == KErrNone)

			aStatus = iDatabase.DTICommitAndEnd();

		if (aStatus < KErrNone)

			iDatabase.DTIRollBack();

		}

	}