metadataengine/server/src/mdsfindengine.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 18 Jan 2010 20:34:07 +0200
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/*
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* Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies). 
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  Manages object search from database*
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*/
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#include "mdsfindengine.h"
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#include "mdcresult.h"
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#include "mdcitem.h"
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#include "mdsdbconnectionpool.h"
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#include "mdsobjectlocklist.h"
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#include "mdsserversession.h"
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#include "mdsfindsequence.h"
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#include "mdslogger.h"
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#include "mdcserializationbuffer.h"
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#include "mdsschema.h"
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#include "mdsserver.h"
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__USES_LOGGER
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// ---------------------------------------------------------------------------
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// NewL
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// ---------------------------------------------------------------------------
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//
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CMdSFindEngine* CMdSFindEngine::NewL(
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	TUint32 aQueryId, 
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    CMdSServerSession& aParent,
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    CMdSObjectLockList& aLockList,
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    CMdsSchema& aSchemaNew )
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    {
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    CMdSFindEngine* self = CMdSFindEngine::NewLC(
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        aQueryId, aParent, aLockList, aSchemaNew );
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    CleanupStack::Pop( self );
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    return self;
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    }
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// ---------------------------------------------------------------------------
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// NewLC
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// ---------------------------------------------------------------------------
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//
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CMdSFindEngine* CMdSFindEngine::NewLC(
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	TUint32 aQueryId, 
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    CMdSServerSession& aParent,
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    CMdSObjectLockList& aLockList,
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    CMdsSchema& aSchemaNew )
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    {
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    CMdSFindEngine* self = new ( ELeave ) CMdSFindEngine(
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        aQueryId, aParent, aLockList );
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    CleanupStack::PushL( self );
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    self->ConstructL( aSchemaNew );
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    return self;
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    }
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// ---------------------------------------------------------------------------
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// Default constructor
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// ---------------------------------------------------------------------------
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//
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CMdSFindEngine::CMdSFindEngine(
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	TUint32 aQueryId, 
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    CMdSServerSession& aParent,
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    CMdSObjectLockList& aLockList )
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    : iQueryId( aQueryId )
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    , iParent( aParent )
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    , iLockList( aLockList )
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    , iSequence( NULL )
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    , iSerializedCriteria( NULL )
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    , iAsyncPending( EFalse )
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    {
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    }
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// ---------------------------------------------------------------------------
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// ConstructL
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// ---------------------------------------------------------------------------
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//
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void CMdSFindEngine::ConstructL( CMdsSchema& aSchema )
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    {
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    iSequence = CMdSFindSequence::NewL( iParent.GetServer(), aSchema, *this );
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    }
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// ---------------------------------------------------------------------------
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// QueryId
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// ---------------------------------------------------------------------------
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//
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TUint32 CMdSFindEngine::QueryId()
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	{
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	return iQueryId;
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	}
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// ---------------------------------------------------------------------------
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// SetFindParams
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// ---------------------------------------------------------------------------
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//
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void CMdSFindEngine::SetFindParams( TUint32 aNotifyCount )
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    {
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    iSequence->SetFindParams( aNotifyCount );
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    }
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// ---------------------------------------------------------------------------
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// SetFindCriteria
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// ---------------------------------------------------------------------------
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//
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void CMdSFindEngine::SetFindCriteria( CMdCSerializationBuffer* aSerializedCriteria )
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    {
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    iSerializedCriteria = aSerializedCriteria;
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    }
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   119
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// ---------------------------------------------------------------------------
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// CreateResultSetL
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// ---------------------------------------------------------------------------
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//
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void CMdSFindEngine::CreateResultSet(RMessage2 aMessage)
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    {
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    iMessage = aMessage;
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    }
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// ---------------------------------------------------------------------------
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// Destructor
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// ---------------------------------------------------------------------------
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//
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CMdSFindEngine::~CMdSFindEngine()
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    {
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   	delete iSerializedCriteria;
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   	delete iSequence;
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    }
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   138
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// ---------------------------------------------------------------------------
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// FindL
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// ---------------------------------------------------------------------------
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//
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TInt CMdSFindEngine::FindL( TUserLevel aUserLevel )
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    {
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    const TInt result = iSequence->FindL( *iSerializedCriteria, aUserLevel );
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    if( result == KErrNone && iMessage.IsNull() == EFalse )
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    	{
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    	TPckgBuf<TInt> sizeBuf( iSequence->ResultsL().Size() );
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    	iMessage.WriteL( 2, sizeBuf );
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    	}
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    return result;
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    }
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// ---------------------------------------------------------------------------
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// ContinueL
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// ---------------------------------------------------------------------------
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//
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TInt CMdSFindEngine::ContinueL()
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    {
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    const TInt result = iSequence->ContinueL();
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    if( result == KErrNone && iMessage.IsNull() == EFalse )
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    	{
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    	TPckgBuf<TInt> sizeBuf( iSequence->ResultsL().Size() );
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    	iMessage.WriteL( 2, sizeBuf );
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    	}
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    return result;
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    }
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// ---------------------------------------------------------------------------
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// FindAsyncL
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// ---------------------------------------------------------------------------
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//
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void CMdSFindEngine::FindAsyncL( TUserLevel aUserLevel )
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    {
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    iAsyncPending = ETrue;
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    iSequence->FindAsync( *iSerializedCriteria, aUserLevel );
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    }
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// ---------------------------------------------------------------------------
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// ContinueAsync
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// ---------------------------------------------------------------------------
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//
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void CMdSFindEngine::ContinueAsync()
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    {
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    iAsyncPending = ETrue;
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    iSequence->ContinueAsync();
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    }
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// ---------------------------------------------------------------------------
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// Cancel
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// ---------------------------------------------------------------------------
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//
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void CMdSFindEngine::Cancel( TInt aError )
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    {
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    TBool toComplete = iAsyncPending;
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    iAsyncPending = EFalse;
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    iSequence->Cancel();
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   202
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    if( iMessage.IsNull() == EFalse )
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    	{
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    	if ( toComplete ) 
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    		{
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    		iMessage.Complete( KErrCancel );
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    		}
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    	else 
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    		{
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    		iMessage.Complete( aError );
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    		}
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    	}
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    }
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   215
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// ---------------------------------------------------------------------------
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// SetComplete
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// ---------------------------------------------------------------------------
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//
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void CMdSFindEngine::SetComplete( TInt aError )
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    {
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    TBool toComplete = iAsyncPending;
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    __LOG1( ELogServer, "<- Find Set Complete (%d)", aError );
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   224
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    if( aError == KErrNone )
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        {
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        TUint32 resultSize = 0;
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   228
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        TInt err = KErrNone;
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   230
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        TRAP( err, resultSize = iSequence->ResultsL().Size() );
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       	if( err )
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       		{
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       		if ( toComplete && iMessage.IsNull() == EFalse ) 
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       			{
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       			iMessage.Complete( err );
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       			}
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       		return;
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       		}
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parents:
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   241
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        iAsyncPending = EFalse;
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parents:
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   243
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   244
       	if ( iMessage.IsNull() == EFalse )
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       		{
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       		TPckgBuf<TInt> sizeBuf( resultSize );
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       		err = iMessage.Write( 2, sizeBuf );
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       		}
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       	if( err )
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       		{
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   253
       		if ( toComplete && iMessage.IsNull() == EFalse ) 
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   254
       			{
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       			iMessage.Complete( err );
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   256
       			}
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   257
       		return;
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   258
       		}
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   259
       	else
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   260
       		{        	
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   261
       		if ( toComplete && iMessage.IsNull() == EFalse ) 
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parents:
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   262
       			{
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parents:
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   263
       			iMessage.Complete( EAsyncFindSetReady );
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   264
       			}
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   265
       		}
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        }
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   267
    else
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parents:
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   268
        {
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   269
       	if ( toComplete && iMessage.IsNull() == EFalse ) 
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parents:
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   270
       		{
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       		iMessage.Complete( aError );
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       		}
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       	return;
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        }
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   275
    }
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// ---------------------------------------------------------------------------
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// FindComplete
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// ---------------------------------------------------------------------------
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//
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void CMdSFindEngine::FindComplete( TInt aError )
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    {
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    TBool toComplete = iAsyncPending;
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    __LOG1( ELogServer, "<- Find Complete (%d)", aError );
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   285
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    if( aError == KErrNone )
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   287
        {
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   288
        TUint32 resultSize = 0;
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   289
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        TInt err = KErrNone;
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   291
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        TRAP( err, resultSize = iSequence->ResultsL().Size() );
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   293
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   294
       	if( err )
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parents:
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   295
       		{
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   296
       		if ( toComplete && iMessage.IsNull() == EFalse )
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parents:
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   297
       			{
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   298
       			iMessage.Complete( err );
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   299
       			}
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       		return;
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   301
       		}
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parents:
diff changeset
   302
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        iAsyncPending = EFalse;
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   304
        
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   305
        if ( iMessage.IsNull() == EFalse )
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parents:
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   306
        	{
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   307
        	TPckgBuf<TInt> sizeBuf( resultSize );    	
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parents:
diff changeset
   308
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   309
        	err = iMessage.Write( 2, sizeBuf );
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   310
        	}
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parents:
diff changeset
   311
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parents:
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   312
       	if( err )
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parents:
diff changeset
   313
       		{
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parents:
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   314
       		if ( toComplete && iMessage.IsNull() == EFalse ) 
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parents:
diff changeset
   315
       			{
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   316
       			iMessage.Complete( err );
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parents:
diff changeset
   317
       			}
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parents:
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   318
       		return;
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parents:
diff changeset
   319
       		}
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   320
       	else
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   321
			{
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   322
        	if ( toComplete && iMessage.IsNull() == EFalse ) 
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parents:
diff changeset
   323
        		{
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parents:
diff changeset
   324
        		iMessage.Complete( EAsyncFindComplete );
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parents:
diff changeset
   325
        		}
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   326
			}
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   327
        }
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   328
    else
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   329
        {
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parents:
diff changeset
   330
       	if ( toComplete && iMessage.IsNull() == EFalse ) 
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parents:
diff changeset
   331
       		{
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   332
       		iMessage.Complete( aError );
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   333
       		}
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   334
       	return;
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   335
        }
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   336
    }
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   337
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parents:
diff changeset
   338
const CMdCSerializationBuffer& CMdSFindEngine::ResultsL() const
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   339
	{
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parents:
diff changeset
   340
	return iSequence->ResultsL();
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parents:
diff changeset
   341
	}
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   342
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parents:
diff changeset
   343
void CMdSFindEngine::SetResultMode( TBool aResultModeItems )
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   344
	{
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   345
	iLastResultModeItems = aResultModeItems;
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parents:
diff changeset
   346
	}
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   347
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parents:
diff changeset
   348
TBool CMdSFindEngine::IsComplete() const
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   349
	{
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   350
	if( iSequence )
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   351
		{		
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   352
		return iSequence->IsComplete();
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   353
		}
c53acadfccc6 Revision: 201001
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parents:
diff changeset
   354
	else
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   355
		{
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   356
		return ETrue;
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   357
		}
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   358
	}
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   359
	
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   360
TBool CMdSFindEngine::IsQueryComplete()
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   361
	{
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   362
	if( iSequence )
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   363
		{		
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   364
		return iSequence->IsQueryComplete();
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   365
		}
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   366
	else
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   367
		{
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   368
		return ETrue;
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   369
		}
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   370
	}	
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   371
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   372
CMdSServer& CMdSFindEngine::GetServer() const
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   373
	{
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   374
	return iParent.GetServer();
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   375
	}
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   376
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   377
void CMdSFindEngine::LockFindResultObjectsL( CMdSObjectLockList& aLockList )
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   378
	{
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   379
	if (!iLastResultModeItems)
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   380
		{
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   381
		return;
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   382
		}
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   383
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   384
	CMdsSchema& schema = iParent.GetServer().Schema();
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   385
	CMdCSerializationBuffer& buffer = iSequence->ResultsL();
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   386
	buffer.PositionL( KNoOffset );
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   387
	TMdCItems items;
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   388
	items.DeserializeL( buffer );
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   389
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   390
	const CMdsNamespaceDef* namespaceDef = schema.GetNamespaceByIdL( items.iNamespaceDefId );
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   391
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   392
	for(TInt32 i = 0; i < items.iObjects.iPtr.iCount; ++i)
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   393
		{
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   394
		buffer.PositionL( items.iObjects.iPtr.iOffset + i * sizeof(TMdCObject) );
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   395
		TMdCObject object;
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   396
		object.DeserializeL( buffer );
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   397
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   398
		if ( aLockList.IsLocked( *namespaceDef, object.iId ) )
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   399
			{
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   400
			object.iFlags &= ~EMdEObjectFlagModOpen;
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   401
			}
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   402
		else
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   403
			{
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   404
			aLockList.LockObjectL( iParent, *namespaceDef, object.iId );
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   405
			object.iFlags |= EMdEObjectFlagModOpen;
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   406
			}
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   407
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   408
		buffer.PositionL( items.iObjects.iPtr.iOffset + i * sizeof(TMdCObject) );
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   409
		object.SerializeL( buffer );
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   410
		}
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   411
	}
c53acadfccc6 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   412