mmappcomponents/mmmtpdataprovider/src/cmmmtpdpaccesssingleton.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Wed, 31 Mar 2010 22:26:09 +0300
branchRCL_3
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parent 0 a2952bb97e68
child 17 6f9f6e99a23e
permissions -rw-r--r--
Revision: 201011 Kit: 201013
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/*
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* Copyright (c) 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:  Meta data access singleton
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*
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*/
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#include <e32base.h>    // CObject
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#include "cmmmtpdpaccesssingleton.h"
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#include "cmmmtpdpmetadataaccesswrapper.h"
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#include "mmmtpdplogger.h"
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// -----------------------------------------------------------------------------
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// CMmMtpDpAccessSingleton::~CMmMtpDpAccessSingleton
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// destructor
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// -----------------------------------------------------------------------------
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//
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CMmMtpDpAccessSingleton::~CMmMtpDpAccessSingleton()
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    {
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    delete iWrapper;
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    }
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// -----------------------------------------------------------------------------
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// CMmMtpDpAccessSingleton::GetAccessWrapperL
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// get wrapper instance
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// -----------------------------------------------------------------------------
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//
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EXPORT_C CMmMtpDpMetadataAccessWrapper& CMmMtpDpAccessSingleton::GetAccessWrapperL()
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    {
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    CMmMtpDpAccessSingleton* self = CMmMtpDpAccessSingleton::Instance();
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    User::LeaveIfNull( self );
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    return *( self->iWrapper );
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    }
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// -----------------------------------------------------------------------------
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// CMmMtpDpAccessSingleton::CreateL
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// create singleton instance
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// -----------------------------------------------------------------------------
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//
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EXPORT_C void CMmMtpDpAccessSingleton::CreateL( MMTPDataProviderFramework& aFramework )
0
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    {
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    CMmMtpDpAccessSingleton* self = reinterpret_cast<CMmMtpDpAccessSingleton*>( Dll::Tls() );
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    if ( self == NULL )
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        {
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        self = CMmMtpDpAccessSingleton::NewL( aFramework );
0
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        Dll::SetTls( reinterpret_cast<TAny*>( self ) );
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        }
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    else
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        {
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        self->Inc();
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        }
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    PRINT1( _L("MM MTP <> CMmMtpDpAccessSingleton::CreateL, AccessCount: %d"),
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        self->AccessCount() );
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    }
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// -----------------------------------------------------------------------------
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// CMmMtpDpAccessSingleton::Release
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// release singleton instance
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// -----------------------------------------------------------------------------
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//
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EXPORT_C void CMmMtpDpAccessSingleton::Release()
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    {
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    CMmMtpDpAccessSingleton* self = reinterpret_cast<CMmMtpDpAccessSingleton*>( Dll::Tls() );
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    if ( self != NULL )
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        {
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        PRINT1( _L("MM MTP <> CMmMtpDpAccessSingleton::Release, singleton != NULL, AccessCount: %d"),
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            self->AccessCount() );
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        self->Dec();
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        if ( self->AccessCount() == 0 )
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            {
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            PRINT( _L("MM MTP <> CMmMtpDpAccessSingleton::Release, AccessCount == 0, delete it") );
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            delete self;
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            Dll::SetTls( NULL );
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            }
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        }
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    }
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// -----------------------------------------------------------------------------
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// CMmMtpDpAccessSingleton::OpenSessionL
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// do some special process with assess DBs when receives opensession command
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// -----------------------------------------------------------------------------
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//
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EXPORT_C void CMmMtpDpAccessSingleton::OpenSessionL()
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    {
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    PRINT( _L("MM MTP => CMmMtpDpAccessSingleton::OpenSessionL") );
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    CMmMtpDpAccessSingleton* self = CMmMtpDpAccessSingleton::Instance();
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    User::LeaveIfNull( self );
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    self->GetAccessWrapperL().OpenSessionL();
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    PRINT( _L("MM MTP <= CMmMtpDpAccessSingleton::OpenSessionL") );
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    }
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// -----------------------------------------------------------------------------
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// CMmMtpDpAccessSingleton::CloseSessionL
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// do some special process with assess DBs when receives closesession command
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// -----------------------------------------------------------------------------
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//
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EXPORT_C void CMmMtpDpAccessSingleton::CloseSessionL()
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    {
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    PRINT( _L("MM MTP => CMmMtpDpAccessSingleton::CloseSessionL") );
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    CMmMtpDpAccessSingleton* self = CMmMtpDpAccessSingleton::Instance();
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    User::LeaveIfNull( self );
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    self->GetAccessWrapperL().CloseSessionL();
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    PRINT( _L("MM MTP <= CMmMtpDpAccessSingleton::CloseSessionL") );
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    }
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// -----------------------------------------------------------------------------
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// CMmMtpDpAccessSingleton::Instance
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// get singleton instance, for internal use
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// -----------------------------------------------------------------------------
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//
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CMmMtpDpAccessSingleton* CMmMtpDpAccessSingleton::Instance()
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    {
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    return reinterpret_cast<CMmMtpDpAccessSingleton*>( Dll::Tls() );
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    }
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// -----------------------------------------------------------------------------
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// CMmMtpDpAccessSingleton::NewL
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// two-phase construction
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// -----------------------------------------------------------------------------
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//
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CMmMtpDpAccessSingleton* CMmMtpDpAccessSingleton::NewL( MMTPDataProviderFramework& aFramework )
0
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    {
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    CMmMtpDpAccessSingleton* self = new(ELeave) CMmMtpDpAccessSingleton;
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    CleanupStack::PushL( self );
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    self->ConstructL( aFramework );
0
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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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// CMmMtpDpAccessSingleton::ConstructL
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// two-phase construction
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// -----------------------------------------------------------------------------
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//
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void CMmMtpDpAccessSingleton::ConstructL( MMTPDataProviderFramework& aFramework )
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    {
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    iWrapper = CMmMtpDpMetadataAccessWrapper::NewL( aFramework );
0
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    }
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// end of file