1 // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #include "LOGDUP.H"

    17 #include "LOGFILTQ.H"

    18 #include "LOGQUERY.H"

    19 #include "logservpanic.h"

    20 #include "LogServDatabaseTransactionInterface.h"

    21 #include "LogServResourceInterpreter.h"

    22 #include "LogServDatabaseChangeInterface.h"

    23 #include "LogServSqlStrings.h"

    24 

    25 CLogDuplicate::CLogDuplicate(MLogServDatabaseTransactionInterface& aDatabase, TInt aPriority) :

    26     CLogActive(aPriority), 

    27     iDatabase(aDatabase)

    28 	{

    29 	}

    30 

    31 CLogDuplicate::~CLogDuplicate()

    32 	{

    33 	Cancel();

    34 	delete iFilterList;

    35 	}

    36 

    37 void CLogDuplicate::ConstructL()

    38 	{

    39 	iFilterList = new(ELeave) CLogFilterList;

    40 	}

    41 

    42 CLogDuplicate* CLogDuplicate::NewL(MLogServDatabaseTransactionInterface& aDatabase, TInt aPriority)

    43 	{

    44 	CLogDuplicate* self = new(ELeave) CLogDuplicate(aDatabase, aPriority);

    45 	CleanupStack::PushL(self);

    46 	self->ConstructL();

    47 	CleanupStack::Pop(self);

    48 	return self;

    49 	}

    50 

    51 TBool CLogDuplicate::StartL(TLogId aId, TLogRecentList aRecentList, const CLogFilter& aFilter, TRequestStatus& aStatus)

    52 	{

    53 	if (aRecentList == KLogNullRecentList)

    54 		return EFalse;

    55 

    56 	iId = aId;

    57 	iRecentList = aRecentList;

    58 	iFilterList->Reset();

    59 	iFilterList->AppendL(&aFilter);

    60 

    61 	Queue(aStatus);

    62     TRequestStatus* status = &iStatus;

    63     User::RequestComplete(status, KErrNone);

    64 	SetActive();

    65 	return ETrue;

    66 	}

    67 

    68 void CLogDuplicate::DoRunL()

    69 	{

    70     RLogDynBuf expr;

    71     TLogFilterExprBuilder exprBuilder(iDatabase);

    72     exprBuilder.BuildExprLC(expr, *iFilterList, KLogAnd);

    73     TheSql.Format(KLogSqlSelectDuplicateString, iRecentList, &expr.DesC(), iId);

    74     CleanupStack::PopAndDestroy(&expr);

    75 

    76     RLogDbView view;

    77     view.PrepareLC(iDatabase.DTIDatabase(), TheSql);

    78     if(view.FirstL())

    79         {

    80         // Begin a transaction

    81         TBool inTransaction = iDatabase.DTIInTransaction();

    82         if(!inTransaction)

    83             {

    84             iDatabase.DTIBeginWithRollBackProtectionLC();

    85             }

    86         // Get column ids

    87         static TDbColNo idColNo = 0;

    88         static TDbColNo duplicateColNo = 0;

    89         if(idColNo == 0)

    90             {

    91             CDbColSet* cs = view.ColSetL();

    92             idColNo = cs->ColNo(KLogFieldIdString);

    93             duplicateColNo = cs->ColNo(KLogFieldEventDuplicateString);

    94             delete cs;

    95             }

    96         // Iterate through the events

    97         do

    98             {

    99             // Get current event id

   100             view.GetL();

   101             const TLogId id = view.ColInt32(idColNo);

   102             // Set the latest recent?

   103             if(iId < 0)

   104                 {

   105                 iId = id;

   106                 }

   107             // Make the change

   108             view.UpdateL();

   109             iId == id ? view.SetColNullL(duplicateColNo) : view.SetColL(duplicateColNo, iId); 

   110             view.PutL();

   111             // This is a "hidden" change. It may affect the contents of a view, but the actual event hasn't changed

   112             iDatabase.DTIChangeInterface().DCISubmitChangedEventContextL(ELogChangeTypeEventChangedHidden, id);

   113             }

   114         while(view.NextL());

   115         // Commit changes

   116         if(!inTransaction)

   117             {

   118             iDatabase.DTICommitAndCancelRollbackProtectionL();

   119             }

   120         }

   121     CleanupStack::PopAndDestroy(&view);

   122 	}

   123 

   124 void CLogDuplicate::DoComplete(TInt& aStatus)

   125 	{

   126 	// Ignoring all errors because if an error occurs whilst detecting duplicate events 

   127 	// it should not stop us actually adding the event to the log

   128 	aStatus = KErrNone;

   129 	}