musichomescreen_multiview/musiccontentpublisher/src/musiccontentmap.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Wed, 31 Mar 2010 21:26:33 +0300
branchRCL_3
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permissions -rw-r--r--
Revision: 201011 Kit: 201013
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/*
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* Copyright (c) 2008-2008 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 MCP plugins, and content publishing.
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*
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*/
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#include "musiccontentmap.h"
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#include <mpxlog.h>
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// ======== TRACING MACROS ========
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// These extend macros in <mpxlog.h>
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#ifdef _DEBUG
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#define MPX_DEBUG2_8(cstr, p) RDebug::Printf(cstr, p)
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#else
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#define MPX_DEBUG2_8(cstr, p)
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#endif
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// ======== MEMBER FUNCTIONS ========
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// ---------------------------------------------------------------------------
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// Constructor
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// ---------------------------------------------------------------------------
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//
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RMusicContentVariant::RMusicContentVariant():iType(ETypeNull),iModified(EFalse){}
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// ---------------------------------------------------------------------------
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// Reset value to null
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// ---------------------------------------------------------------------------
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//
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void RMusicContentVariant::Reset()
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    {
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    switch (iType)
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        {
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        case ETypeNull:
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        	  return;
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        case ETypeInt:
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            break;
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        case ETypeBufC:
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            delete iValue.iBufC;
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            iValue.iBufC = 0;
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            break;
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        case ETypeMap:
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      	    if ( iValue.iMap )
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      	        {
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      	        iValue.iMap->Close();
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                iValue.iMap = 0;
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      	        }
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      	    break;
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        }
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    iType = ETypeNull;
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    iModified = ETrue;
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    };
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// ---------------------------------------------------------------------------
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// Set value
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// ---------------------------------------------------------------------------
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//
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TBool RMusicContentVariant::SetL( TInt aInt)
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    {
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    if (iType != ETypeInt || iValue.iInt != aInt)
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        {
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        Reset();
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        iValue.iInt = aInt;
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        iType = ETypeInt;
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        iModified = ETrue;
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        return ETrue;
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        }
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    else
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        {
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        return EFalse;
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        }
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    }
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// ---------------------------------------------------------------------------
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// Set value
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// ---------------------------------------------------------------------------
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//
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TBool RMusicContentVariant::SetL( const TDesC& aDesc )
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    {
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    if (iType != ETypeBufC || iValue.iBufC->Compare(aDesc) )
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        {
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        Reset();
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        iValue.iBufC = aDesc.AllocL();
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        iType = ETypeBufC;
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        iModified = ETrue;
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        return ETrue;
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        }
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    else
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        {
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        return EFalse;
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        }
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    }
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// ---------------------------------------------------------------------------
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// Set value
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// ---------------------------------------------------------------------------
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//
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TBool RMusicContentVariant::SetL( CLiwMap * aMap )
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    {
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    if (iType != ETypeMap || ! ( *iValue.iMap == *aMap ) )
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        {
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        Reset();
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        TLiwVariant variant;
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        variant.SetL ( TLiwVariant (aMap) ); // increase CLiwMap reference counter
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        iValue.iMap = aMap;
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        iType = ETypeMap;
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        iModified = ETrue;
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        return ETrue;
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        }
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    else
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        {
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        return EFalse;
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        }
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    }
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// ---------------------------------------------------------------------------
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// Return whether value has been modified
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// ---------------------------------------------------------------------------
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//
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TBool RMusicContentVariant::IsModified() const
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    {
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    return iModified;
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    }
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// ---------------------------------------------------------------------------
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// Reset modified flag
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// ---------------------------------------------------------------------------
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//
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void RMusicContentVariant::ResetModified()
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    {
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    iModified = EFalse;
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    }
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// ---------------------------------------------------------------------------
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// Return whether value is null
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// ---------------------------------------------------------------------------
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//
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TBool RMusicContentVariant::IsNull() const
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    {
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    return iType == ETypeNull;
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    }
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// ---------------------------------------------------------------------------
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// Return variant value
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// ---------------------------------------------------------------------------
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//
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TLiwVariant RMusicContentVariant::LiwVariant() const
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    {
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    switch (iType)
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        {
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        case ETypeNull:
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            return TLiwVariant();
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        case ETypeInt:
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            return TLiwVariant( iValue.iInt );
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        case ETypeBufC:
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            return TLiwVariant( iValue.iBufC );
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        case ETypeMap:
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            return TLiwVariant( iValue.iMap );
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        }
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    return TLiwVariant();
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    }
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// ---------------------------------------------------------------------------
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// Hash function for the map
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// ---------------------------------------------------------------------------
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//
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static inline TUint32 HashFunction(const TPtrC8& aKey)
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   {
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   return DefaultHash::Des8(aKey);
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   }
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// ---------------------------------------------------------------------------
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// Identity relation for the map
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// ---------------------------------------------------------------------------
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//
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static inline TBool IdentityRelation(const TPtrC8& aLeft, const TPtrC8& aRight)
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   {
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   return DefaultIdentity::Des8(aLeft, aRight);
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   }
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// ---------------------------------------------------------------------------
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// Constructor
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// ---------------------------------------------------------------------------
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//
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RMusicContentMap::RMusicContentMap():
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    iMap(
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        THashFunction32< TPtrC8 >(&HashFunction), 
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        TIdentityRelation< TPtrC8 >(&IdentityRelation) ),
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    iModified( EFalse )
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    {}
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// ---------------------------------------------------------------------------
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// Reset a value in the map
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// ---------------------------------------------------------------------------
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//
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void RMusicContentMap::Reset( TPtrC8 aKey )
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    {
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    MPX_DEBUG2_8("RMusicContentMap::Reset %S", &aKey);
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     RMusicContentVariant * value = iMap.Find( aKey );
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    if ( value  )
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        {
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        iModified |= !value->IsNull();
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        value->Reset();
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        }
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    }
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// ---------------------------------------------------------------------------
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// Set a value in the map
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// ---------------------------------------------------------------------------
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//
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void RMusicContentMap::SetL( TPtrC8 aKey, const TDesC& aValue )
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    {
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    MPX_DEBUG2_8("RMusicContentMap::SetL %S", &aKey);
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    iModified |= AtL( aKey ).SetL( aValue );
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    }
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// ---------------------------------------------------------------------------
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// Set a value in the map
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// ---------------------------------------------------------------------------
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//
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void RMusicContentMap::SetL( TPtrC8 aKey, const TInt& aValue )
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    {
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    MPX_DEBUG2_8("RMusicContentMap::SetL %S", &aKey);
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    iModified |= AtL( aKey ).SetL( aValue );
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    }
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// ---------------------------------------------------------------------------
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// Set a value in the map
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// ---------------------------------------------------------------------------
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//
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void RMusicContentMap::SetL( TPtrC8 aKey, CLiwMap * aMap )
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    {
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    MPX_DEBUG2_8("RMusicContentMap::SetL %S", &aKey);
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    iModified |= AtL( aKey ).SetL( aMap );
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    }
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// ---------------------------------------------------------------------------
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// Return whether map has been modified
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// ---------------------------------------------------------------------------
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//
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TBool RMusicContentMap::IsModified() const
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    {
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    return iModified;
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    }
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// ---------------------------------------------------------------------------
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// Get modified values
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// ---------------------------------------------------------------------------
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//
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CLiwMap * RMusicContentMap::GetModifiedLC()
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    {
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    MPX_FUNC("RMusicContentMap::GetModifiedLC");
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    CLiwMap * result = NULL;
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    if (iModified)
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        {
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        result = CLiwDefaultMap::NewLC();
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        THashMapIter<TPtrC8, RMusicContentVariant> iter( iMap );
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        while( const RMusicContentVariant * ptr = iter.NextValue() )
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            {
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            if ( ! ptr->IsModified() ) continue;
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/*            	
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            if ( ptr->IsNull() )
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                {
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                MPX_DEBUG2_8("RMusicContentMap::GetModifiedL skipping %S (is null)", iter.CurrentKey());
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                }
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            else
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*/
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                {
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                MPX_DEBUG2_8("RMusicContentMap::GetModifiedL publishing %S", iter.CurrentKey());
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                result->InsertL( *iter.CurrentKey(), ptr->LiwVariant() );
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                }
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            iter.CurrentValue()->ResetModified();
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            }
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        iModified = EFalse;
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        }
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    return result;
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    }
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// ---------------------------------------------------------------------------
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// Get all values
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// ---------------------------------------------------------------------------
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//
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CLiwMap * RMusicContentMap::GetAllLC()
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    {
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    MPX_FUNC("RMusicContentMap::GetAllL");
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    CLiwMap * result = NULL;
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    result = CLiwDefaultMap::NewLC();
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    THashMapIter<TPtrC8, RMusicContentVariant> iter( iMap );
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    while( const RMusicContentVariant * ptr = iter.NextValue() )
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        {
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/*        if ( ptr->IsNull() )
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            {
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            MPX_DEBUG2_8("RMusicContentMap::GetAllL skipping %S (is null)", iter.CurrentKey());
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            }
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        else
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*/            {
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            MPX_DEBUG2_8("RMusicContentMap::GetAllL publishing %S", iter.CurrentKey());
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            result->InsertL( *iter.CurrentKey(), ptr->LiwVariant() );
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            }
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        iter.CurrentValue()->ResetModified();
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        }
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    iModified = EFalse;
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    return result;
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    }
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// ---------------------------------------------------------------------------
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// Close map
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// ---------------------------------------------------------------------------
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//
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void RMusicContentMap::Close()
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    {
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    MPX_FUNC("RMusicContentMap::Close");
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    THashMapIter<TPtrC8, RMusicContentVariant> iter( iMap );
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    while( iter.NextValue() )
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        {
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        iter.CurrentValue()->Reset();
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        }
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    iMap.Close();
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   333
    }
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   334
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   335
RMusicContentVariant& RMusicContentMap::AtL (TPtrC8 aKey)
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    {
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   337
    RMusicContentVariant * value = iMap.Find( aKey );
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   338
    if (! value )
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        {
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        iMap.InsertL ( aKey, RMusicContentVariant() );
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        value = iMap.Find( aKey );
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        }
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    return *value;
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    }