mtpdataproviders/mtpimagedp/src/cmtpimagedpmoveobject.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 21 Jun 2010 16:36:59 +0300
branchRCL_3
changeset 32 f85613f12947
parent 11 4843bb5893b6
child 47 63cf70d3ecd8
permissions -rw-r--r--
Revision: 201020 Kit: 2010125
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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:
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//
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/**
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 @file
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 @internalTechnology
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*/
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#include <f32file.h>
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#include <bautils.h>
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#include <pathinfo.h> // PathInfo
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#include <sysutil.h>
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#include <mtp/mmtpdataproviderframework.h>
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#include <mtp/mmtpobjectmgr.h>
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#include <mtp/mmtpstoragemgr.h>
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#include <mtp/cmtpobjectmetadata.h>
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#include <mtp/cmtptypearray.h>
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#include <mtp/cmtptypestring.h>
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#include "cmtpimagedpmoveobject.h"
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#include "mtpimagedppanic.h"
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#include "cmtpimagedpobjectpropertymgr.h"
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#include "mtpimagedputilits.h"
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#include "cmtpimagedpthumbnailcreator.h"
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#include "cmtpimagedp.h"
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__FLOG_STMT(_LIT8(KComponent,"MoveObject");)
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/**
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Verification data for the MoveObject request
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*/    
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const TMTPRequestElementInfo KMTPMoveObjectPolicy[] = 
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    {
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        {TMTPTypeRequest::ERequestParameter2, EMTPElementTypeStorageId, EMTPElementAttrWrite, 0, 0, 0},
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        {TMTPTypeRequest::ERequestParameter3, EMTPElementTypeObjectHandle, EMTPElementAttrDir, 1, 0, 0}
0
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    };
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/**
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Two-phase construction method
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@param aPlugin	The data provider plugin
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@param aFramework	The data provider framework
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@param aConnection	The connection from which the request comes
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@return a pointer to the created request processor object
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*/     
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MMTPRequestProcessor* CMTPImageDpMoveObject::NewL(MMTPDataProviderFramework& aFramework, MMTPConnection& aConnection,CMTPImageDataProvider& aDataProvider)
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    {
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    CMTPImageDpMoveObject* self = new (ELeave) CMTPImageDpMoveObject(aFramework, aConnection,aDataProvider);
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    CleanupStack::PushL(self);
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    self->ConstructL();
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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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Destructor
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*/	
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CMTPImageDpMoveObject::~CMTPImageDpMoveObject()
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    {
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    __FLOG(_L8(">> CMTPImageDpMoveObject::~CMTPImageDpMoveObject")); 
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    delete iDest;
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    delete iFileMan;
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    delete iObjectInfo;
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    __FLOG(_L8("<< CMTPImageDpMoveObject::~CMTPImageDpMoveObject"));
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    __FLOG_CLOSE;
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    }
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/**
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Standard c++ constructor
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*/	
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CMTPImageDpMoveObject::CMTPImageDpMoveObject(MMTPDataProviderFramework& aFramework, MMTPConnection& aConnection,CMTPImageDataProvider& aDataProvider) :
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    CMTPRequestProcessor(aFramework, aConnection, sizeof(KMTPMoveObjectPolicy)/sizeof(TMTPRequestElementInfo), KMTPMoveObjectPolicy),
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    iDataProvider(aDataProvider)
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    {
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    __FLOG_OPEN(KMTPSubsystem, KComponent);
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    }
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/**
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 Second phase constructor
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*/
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void CMTPImageDpMoveObject::ConstructL()
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    {
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    __FLOG(_L8(">> CMTPImageDpMoveObject::ConstructL")); 
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    iFileMan = CFileMan::NewL(iFramework.Fs());
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    iObjectInfo = CMTPObjectMetaData::NewL();
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    __FLOG(_L8("<< CMTPImageDpMoveObject::ConstructL")); 
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    }
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TMTPResponseCode CMTPImageDpMoveObject::CheckRequestL()
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    {
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    __FLOG(_L8(">> CMTPImageDpCopyObject::CheckRequestL"));
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    TMTPResponseCode responseCode = CMTPRequestProcessor::CheckRequestL();
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    if (EMTPRespCodeOK == responseCode)
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        {
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        TUint32 objectHandle = Request().Uint32(TMTPTypeRequest::ERequestParameter1);
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        // Check whether object handle is valid
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        responseCode = MTPImageDpUtilits::VerifyObjectHandleL(iFramework, objectHandle, *iObjectInfo);
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        }
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    else if(EMTPRespCodeInvalidObjectHandle == responseCode) //we only check the parent handle
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        {
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        responseCode = EMTPRespCodeInvalidParentObject;
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        }
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    __FLOG_VA((_L8("CheckRequestL - Exit with responseCode = 0x%04X"), responseCode));
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    __FLOG(_L8("<< CMTPImageDpCopyObject::CheckRequestL"));
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    return responseCode;
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    }
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   120
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/**
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MoveObject request handler
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*/		
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void CMTPImageDpMoveObject::ServiceL()
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    {
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    __FLOG(_L8(">> CMTPImageDpMoveObject::ServiceL"));
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    TMTPResponseCode ret = MoveObjectL();
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    SendResponseL(ret);
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    __FLOG(_L8("<< CMTPImageDpMoveObject::ServiceL")); 
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    }
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/**
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A helper function of MoveObjectL.
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@param aNewFileName the new file name after the object is moved.
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*/
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TMTPResponseCode CMTPImageDpMoveObject::MoveFileL(const TDesC& aOldFileName, const TDesC& aNewFileName)	
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    {
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    __FLOG(_L8(">> CMTPImageDpMoveObject::MoveFileL"));
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    TMTPResponseCode responseCode = EMTPRespCodeOK;    
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    /**
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     * File system process the move operation has two different ways:
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     * 1. move object between the same storage.
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     *    under this situation, move operatoin will triggers the EFsRename event by file system.
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     *    then harvester of MdS will directly update the uri of mde object.      
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     *    
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     * 2. move object tetween the different storage.
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     *    uder this situation, move operation will triggers four events by file system:
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     *    a. EFsFileReplace event for old uri object.
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     *    b. EFsFileReplace event for new uri object.
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     *    c. EFsFileSetModified event for DateModified property of object.
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     *    d. EFsDelete event for old uri object.
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     *    
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     *    then harvester of MdS will generate four actions for the above events:
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     *    a. EMdsFileReplaced action for old uri object, this action is a null operation, because no object associates with old uri.
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     *    b. EMdsFileReplaced action for new uri object, this action will add a new mde object into database and 
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     *       put this action into queue of image plugin to wait for execution.
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     *    c. EmdsFileModified action for new object, this action will update the DateModified property of mde object and
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     *       put this action into queue of image plugin to wait for execution.
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     *    d. EmdsFileDeleted action for old object, this action will directly delete old mde object from database.
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     */
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    /**
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     * image dp should update object properties in database to avoid race condition with MdS,
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     * if move faile, it should rollback.
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     */
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   169
    
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    TUint oldStoradId = iObjectInfo->Uint(CMTPObjectMetaData::EStorageId);
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    TUint oldParentHandle = iObjectInfo->Uint(CMTPObjectMetaData::EParentHandle);    
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    iObjectInfo->SetDesCL(CMTPObjectMetaData::ESuid, aNewFileName);
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    iObjectInfo->SetUint(CMTPObjectMetaData::EStorageId, iStorageId);
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    iObjectInfo->SetUint(CMTPObjectMetaData::EParentHandle, iNewParentHandle);
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    iFramework.ObjectMgr().ModifyObjectL(*iObjectInfo);
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    __FLOG_VA((_L16("CMTPImageDpMoveObject::MoveFileL - Update object info:%S"), &aNewFileName));
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    TInt ret = MoveImageFile(aOldFileName, *iDest);
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    if (ret != KErrNone)
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        {
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        //rollback
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        __FLOG_VA((_L16("CMTPImageDpMoveObject::MoveFileL - Rollback")));
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        iObjectInfo->SetDesCL(CMTPObjectMetaData::ESuid, aOldFileName);
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        iObjectInfo->SetUint(CMTPObjectMetaData::EStorageId, oldStoradId);
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        iObjectInfo->SetUint(CMTPObjectMetaData::EParentHandle, oldParentHandle);
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        iFramework.ObjectMgr().ModifyObjectL(*iObjectInfo);       
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        responseCode = EMTPRespCodeGeneralError;        
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        }
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    __FLOG_VA((_L8("CMTPImageDpMoveObject::MoveFileL - MoveImageFile:%d"), ret));
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    __FLOG(_L8("<< CMTPImageDpMoveObject::MoveFileL")); 	
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    return responseCode;
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    }
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   194
/**
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   195
move object operations
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@return A valid MTP response code.
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*/
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TMTPResponseCode CMTPImageDpMoveObject::MoveObjectL()
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    {
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    __FLOG(_L8(">> CMTPImageDpMoveObject::MoveObjectL"));
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    TMTPResponseCode responseCode = EMTPRespCodeOK;
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    GetParametersL();
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    RBuf newObjectName;
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    newObjectName.CreateL(KMaxFileName);
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    newObjectName.CleanupClosePushL();
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    newObjectName = *iDest;
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    TFileName oldFileName = iObjectInfo->DesC(CMTPObjectMetaData::ESuid);
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    TParsePtrC fileNameParser(oldFileName);
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    if((newObjectName.Length() + fileNameParser.NameAndExt().Length()) <= newObjectName.MaxLength())
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        {
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        newObjectName.Append(fileNameParser.NameAndExt());
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        responseCode = CanMoveObjectL(oldFileName, newObjectName);
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        }
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    else
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        {
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        responseCode = EMTPRespCodeGeneralError;
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        }
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    if(responseCode == EMTPRespCodeOK)
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        {
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        responseCode = MoveFileL(oldFileName, newObjectName);
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        }
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    CleanupStack::PopAndDestroy(); // newObjectName.
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    __FLOG(_L8("<< CMTPImageDpMoveObject::MoveObjectL")); 	
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    return responseCode;
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    }
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/**
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Retrieve the parameters of the request
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*/	
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void CMTPImageDpMoveObject::GetParametersL()
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    {
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    __FLOG(_L8(">> CMTPImageDpMoveObject::GetParametersL"));
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    __ASSERT_DEBUG(iRequestChecker, Panic(EMTPImageDpRequestCheckNull));
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    TUint32 objectHandle  = Request().Uint32(TMTPTypeRequest::ERequestParameter1);
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    iStorageId = Request().Uint32(TMTPTypeRequest::ERequestParameter2);
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    iNewParentHandle  = Request().Uint32(TMTPTypeRequest::ERequestParameter3);
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    if(iNewParentHandle == 0)
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        {
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        SetDefaultParentObjectL();
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        }
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    else	
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        {
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        CMTPObjectMetaData* parentObjectInfo = iRequestChecker->GetObjectInfo(iNewParentHandle);
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        __ASSERT_DEBUG(parentObjectInfo, Panic(EMTPImageDpObjectNull));
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        delete iDest;
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        iDest = NULL;
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        iDest = parentObjectInfo->DesC(CMTPObjectMetaData::ESuid).AllocL();
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        }
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    __FLOG(_L8("<< CMTPImageDpMoveObject::GetParametersL"));
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    }
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/**
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Get a default parent object, ff the request does not specify a parent object, 
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*/
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void CMTPImageDpMoveObject::SetDefaultParentObjectL()
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    {
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    __FLOG(_L8(">> CMTPImageDpMoveObject::SetDefaultParentObjectL"));  
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    const CMTPStorageMetaData& storage = iFramework.StorageMgr().StorageL(iStorageId);
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    delete iDest;
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    iDest = NULL;
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    iDest = storage.DesC(CMTPStorageMetaData::EStorageSuid).AllocL();
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    iNewParentHandle = KMTPHandleNoParent;
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    __FLOG(_L8("<< CMTPImageDpMoveObject::SetDefaultParentObjectL"));  
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    }
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/**
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Check if we can move the file to the new location
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*/
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TMTPResponseCode CMTPImageDpMoveObject::CanMoveObjectL(const TDesC& aOldName, const TDesC& aNewName) const
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    {
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    __FLOG(_L8(">> CMTPImageDpMoveObject::CanMoveObjectL"));     
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    TMTPResponseCode result = EMTPRespCodeOK;
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    TEntry fileEntry;
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    User::LeaveIfError(iFramework.Fs().Entry(aOldName, fileEntry));
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    TDriveNumber drive(static_cast<TDriveNumber>(iFramework.StorageMgr().DriveNumber(iStorageId)));
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    User::LeaveIfError(drive);
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    TVolumeInfo volumeInfo;
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    User::LeaveIfError(iFramework.Fs().Volume(volumeInfo, drive));
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11
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    if(volumeInfo.iFree < fileEntry.FileSize())
0
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        {
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        result = EMTPRespCodeStoreFull;
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        }
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    else if (BaflUtils::FileExists(iFramework.Fs(), aNewName))			
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        {
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        result = EMTPRespCodeInvalidParentObject;
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        }
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    __FLOG_VA((_L8("CanMoveObjectL - Exit with response code 0x%04X"), result));
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    __FLOG(_L8("<< CMTPImageDpMoveObject::CanMoveObjectL"));     
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    return result;	
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    }
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   296
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TInt CMTPImageDpMoveObject::MoveImageFile(const TDesC& aOldImageName, const TDesC& aNewImageName)
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    {
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    __FLOG(_L8(">> CMTPImageDpMoveObject::MoveImageFile"));
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    __FLOG_VA((_L8("move image src: %S dest: %S"), &aOldImageName, &aNewImageName));        
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    __FLOG(_L8("<< CMTPImageDpMoveObject::MoveImageFile"));
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    return iFileMan->Move(aOldImageName, aNewImageName);
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    }
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// End of file