author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 14 May 2010 15:47:27 +0300 | |
changeset 20 | cd10d5b85554 |
parent 17 | 0f22fb80ebba |
child 26 | f3533f6eae3f |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2010 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: Maptile database lookup table source implementation. |
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* |
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*/ |
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#include <bautils.h> |
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#include "mylocationlogger.h" |
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#include "lookupmaptiledb.h" |
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_LIT( KSelectAllFrom, "SELECT * FROM " ); |
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_LIT(KQueryToDB,"SELECT * FROM cntmaptilelookuptable WHERE cntuid = %d AND source = %d"); |
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// ----------------------------------------------------------------------------- |
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// CLookupMapTileDatabase::CLookupMapTileDatabase() |
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// Default constructor. |
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// ----------------------------------------------------------------------------- |
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// |
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CLookupMapTileDatabase::CLookupMapTileDatabase() |
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{ |
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} |
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// ----------------------------------------------------------------------------- |
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// CLookupMapTileDatabase::~CLookupMapTileDatabase() |
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// Destructor. |
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// ----------------------------------------------------------------------------- |
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// |
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CLookupMapTileDatabase::~CLookupMapTileDatabase() |
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{ |
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__TRACE_CALLSTACK;// close the database |
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iItemsDatabase.Close(); |
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// close the file session |
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iFsSession.Close(); |
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} |
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// ----------------------------------------------------------------------------- |
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// CLookupMapTileDatabase::~CLookupMapTileDatabase() |
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// Creates an object of this class and pushes to cleanup stack. |
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// ----------------------------------------------------------------------------- |
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// |
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CLookupMapTileDatabase* CLookupMapTileDatabase::NewLC( |
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const TDesC& aLookupTableName) |
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{ |
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CLookupMapTileDatabase* self = new (ELeave) CLookupMapTileDatabase; |
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CleanupStack::PushL(self); |
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self->ConstructL(aLookupTableName); |
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return self; |
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} |
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// ----------------------------------------------------------------------------- |
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// CLookupMapTileDatabase::NewL() |
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// Creates an object of this class. |
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// ----------------------------------------------------------------------------- |
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// |
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CLookupMapTileDatabase* CLookupMapTileDatabase::NewL( |
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const TDesC& aLookupTableName) |
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{ |
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CLookupMapTileDatabase* self = CLookupMapTileDatabase::NewLC( |
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aLookupTableName); |
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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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// CLookupMapTileDatabase::ConstructL() |
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// 2nd phase contructor. |
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// ----------------------------------------------------------------------------- |
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// |
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void CLookupMapTileDatabase::ConstructL(const TDesC& aLookupTableName) |
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{ |
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__TRACE_CALLSTACK; |
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User::LeaveIfError(iFsSession.Connect()); |
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//create private path |
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User::LeaveIfError(iFsSession.CreatePrivatePath(RFs::GetSystemDrive())); |
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// private path with no drive on it |
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iFsSession.PrivatePath(iDbFileName); |
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TFindFile PrivFolder(iFsSession); |
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// find out the drive |
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if (KErrNone == PrivFolder.FindByDir(iDbFileName, KNullDesC)) |
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{ |
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iFsSession.MkDir(KLookupDbPath); |
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iDbFileName.Copy(KLookupDbPath); |
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iDbFileName.Append(aLookupTableName); |
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if (!BaflUtils::FileExists(iFsSession, iDbFileName)) |
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{ // no database exists so we make one |
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User::LeaveIfError(iItemsDatabase.Create(iFsSession, iDbFileName)); |
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// and will create the only table needed for it |
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CreateTableL(iItemsDatabase); |
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|
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//close the database |
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iItemsDatabase.Close(); |
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} |
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} |
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} |
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109 |
|
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// ----------------------------------------------------------------------------- |
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// CLookupMapTileDatabase::Open() |
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// Opens the lookup database. |
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// ----------------------------------------------------------------------------- |
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// |
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TInt CLookupMapTileDatabase::Open() |
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{ |
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__TRACE_CALLSTACK; |
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return iItemsDatabase.Open(iFsSession, iDbFileName); |
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} |
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120 |
|
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// ----------------------------------------------------------------------------- |
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// CLookupMapTileDatabase::Close() |
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// Closes the lookup database. |
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// ----------------------------------------------------------------------------- |
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// |
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void CLookupMapTileDatabase::Close() |
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{ |
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__TRACE_CALLSTACK; |
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iItemsDatabase.Close(); |
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} |
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131 |
|
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// ----------------------------------------------------------------------------- |
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// CLookupMapTileDatabase::CreateTableL() |
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// Creates a lookup table. |
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// ----------------------------------------------------------------------------- |
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// |
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void CLookupMapTileDatabase::CreateTableL(RDbDatabase& aDatabase) |
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138 |
{ |
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__TRACE_CALLSTACK;// Create a table definition |
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CDbColSet* columns = CDbColSet::NewLC(); |
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141 |
|
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// Add Columns |
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143 |
|
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// Add uid column |
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columns->AddL(TDbCol(NCntColUid, EDbColUint32)); |
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146 |
|
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columns->AddL(TDbCol(NColSource, EDbColUint32)); |
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148 |
|
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// add file path type column |
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columns->AddL(TDbCol(NCntColFilePath, EDbColText16)); |
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151 |
|
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// Create a table |
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User::LeaveIfError(aDatabase.CreateTable(KMapTileLookupTable, *columns)); |
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154 |
|
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// cleanup the column set |
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CleanupStack::PopAndDestroy(columns); |
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} |
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158 |
|
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// ----------------------------------------------------------------------------- |
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// CLookupMapTileDatabase::CreateEntryL() |
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// Creates an entry in the lookup table. |
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// ----------------------------------------------------------------------------- |
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// |
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void CLookupMapTileDatabase::CreateEntryL(const TLookupItem& aLookupItem) |
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165 |
{ |
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__TRACE_CALLSTACK;// create a query for the view |
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TFileName queryBuffer; |
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queryBuffer.Copy(KSelectAllFrom); |
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queryBuffer.Append(KMapTileLookupTable); |
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170 |
|
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TInt ret = Open(); |
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if (ret != KErrNone) |
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173 |
{ |
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Close(); |
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Open(); |
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176 |
|
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} |
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iItemsDatabase.Begin(); |
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179 |
|
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RDbView myView; |
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myView.Prepare(iItemsDatabase, TDbQuery(queryBuffer)); |
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CleanupClosePushL(myView); |
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183 |
|
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// Inert the item |
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myView.InsertL(); |
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// set the fields |
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myView.SetColL(KColumncntUid, aLookupItem.iUid); |
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myView.SetColL(KColumnSource, aLookupItem.iSource); |
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myView.SetColL(KColumnFilePath, aLookupItem.iFilePath); |
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190 |
|
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myView.PutL(); |
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192 |
|
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CleanupStack::PopAndDestroy(&myView); // myView |
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iItemsDatabase.Commit(); |
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Close(); |
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} |
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197 |
|
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198 |
// ----------------------------------------------------------------------------- |
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// CLookupMapTileDatabase::UpdateEntryL() |
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// Updates an entry in the lookup table. |
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201 |
// ----------------------------------------------------------------------------- |
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// |
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void CLookupMapTileDatabase::UpdateEntryL(const TLookupItem& aLookupItem) |
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204 |
{ |
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__TRACE_CALLSTACK;// Create the query to find the row to be updated. |
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TFileName queryBuffer; |
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queryBuffer.Format(KQueryToDB, aLookupItem.iUid, aLookupItem.iSource); |
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TInt ret = Open(); |
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if (ret != KErrNone) |
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210 |
{ |
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211 |
Close(); |
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Open(); |
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213 |
|
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} |
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iItemsDatabase.Begin(); |
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216 |
|
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// Create a view of the table based on the query created. |
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RDbView myView; |
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myView.Prepare(iItemsDatabase, TDbQuery(queryBuffer)); |
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CleanupClosePushL(myView); |
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|
221 |
|
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myView.EvaluateAll(); |
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myView.FirstL(); |
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|
224 |
|
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if (myView.AtRow()) |
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{ |
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// found the entry. update it. |
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myView.UpdateL(); |
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myView.SetColL(KColumnFilePath, aLookupItem.iFilePath); |
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myView.PutL(); |
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} |
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232 |
|
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CleanupStack::PopAndDestroy(&myView); // myView |
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iItemsDatabase.Commit(); |
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|
235 |
|
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Close(); |
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237 |
|
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} |
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|
239 |
|
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// ----------------------------------------------------------------------------- |
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// CLookupMapTileDatabase::DeleteEntryL() |
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// Deletes an entry from the lookup table. |
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// ----------------------------------------------------------------------------- |
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// |
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void CLookupMapTileDatabase::DeleteEntryL(const TLookupItem& aLookupItem) |
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246 |
{ |
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__TRACE_CALLSTACK;// Create the query to find the row to be deleted. |
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248 |
|
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TFileName queryBuffer; |
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queryBuffer.Format(KQueryToDB, aLookupItem.iUid, aLookupItem.iSource); |
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251 |
|
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TInt ret = Open(); |
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if (ret != KErrNone) |
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254 |
{ |
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Close(); |
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Open(); |
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|
257 |
|
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258 |
} |
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iItemsDatabase.Begin(); |
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|
260 |
|
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RDbView myView; |
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// query buffer finds only the selected item row. |
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myView.Prepare(iItemsDatabase, TDbQuery(queryBuffer)); |
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CleanupClosePushL(myView); |
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|
265 |
|
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myView.EvaluateAll(); |
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|
267 |
|
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// positions the cursor on the first row of the rowset |
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myView.FirstL(); |
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|
270 |
|
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// Delete the entry found. |
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if (myView.AtRow()) |
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273 |
{ |
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myView.GetL(); |
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if (aLookupItem.iUid == myView.ColUint(KColumncntUid)) |
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|
276 |
{ |
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ret = iFsSession.Delete(myView.ColDes16(KColumnFilePath)); |
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|
278 |
} |
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Revision: 201015
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|
279 |
myView.DeleteL(); |
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Revision: 201015
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|
280 |
} |
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|
281 |
|
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|
282 |
CleanupStack::PopAndDestroy(&myView); // myView |
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Revision: 201015
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|
283 |
iItemsDatabase.Commit(); |
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Revision: 201015
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// compacts the databse, by physicaly removing deleted data. |
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Revision: 201015
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|
285 |
iItemsDatabase.Compact(); |
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Revision: 201015
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|
286 |
|
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Revision: 201015
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|
287 |
Close(); |
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Revision: 201015
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|
288 |
} |
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Revision: 201015
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|
289 |
|
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Revision: 201015
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|
290 |
// ----------------------------------------------------------------------------- |
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|
291 |
// CLookupMapTileDatabase::FindEntryL() |
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// Finds an entry in the lookup table. |
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|
293 |
// ----------------------------------------------------------------------------- |
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Revision: 201015
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|
294 |
// |
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|
295 |
TBool CLookupMapTileDatabase::FindEntryL(TLookupItem& aLookupItem) |
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|
296 |
{ |
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Revision: 201015
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|
297 |
__TRACE_CALLSTACK;// used to store return value |
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Revision: 201015
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|
298 |
TBool retVal = EFalse; |
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Revision: 201015
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|
299 |
// Create a query to find the item. |
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Revision: 201015
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|
300 |
TFileName queryBuffer; |
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Revision: 201015
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|
301 |
queryBuffer.Format(KQueryToDB, aLookupItem.iUid, aLookupItem.iSource); |
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diff
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|
302 |
|
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Revision: 201015
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|
303 |
TInt ret = Open(); |
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Revision: 201015
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|
304 |
if (ret != KErrNone) |
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Revision: 201015
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parents:
diff
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|
305 |
{ |
0f22fb80ebba
Revision: 201015
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parents:
diff
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|
306 |
Close(); |
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Revision: 201015
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parents:
diff
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|
307 |
Open(); |
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Revision: 201015
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parents:
diff
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|
308 |
|
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Revision: 201015
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diff
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|
309 |
} |
0f22fb80ebba
Revision: 201015
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parents:
diff
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|
310 |
iItemsDatabase.Begin(); |
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Revision: 201015
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parents:
diff
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|
311 |
|
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Revision: 201015
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parents:
diff
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|
312 |
// Create a view of the table with the above query. |
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Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
313 |
RDbView myView; |
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Revision: 201015
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parents:
diff
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|
314 |
myView.Prepare(iItemsDatabase, TDbQuery(queryBuffer)); |
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Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
315 |
CleanupClosePushL(myView); |
0f22fb80ebba
Revision: 201015
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
316 |
myView.EvaluateAll(); |
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Revision: 201015
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parents:
diff
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|
317 |
myView.FirstL(); |
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Revision: 201015
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parents:
diff
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|
318 |
|
0f22fb80ebba
Revision: 201015
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parents:
diff
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if (myView.AtRow()) |
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{ |
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// Item found. get the details. |
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myView.GetL(); |
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if (aLookupItem.iUid == myView.ColUint(KColumncntUid)) |
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{ |
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aLookupItem.iFilePath.Copy(myView.ColDes16(KColumnFilePath)); |
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} |
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retVal = ETrue; |
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} |
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|
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CleanupStack::PopAndDestroy(&myView); // myView |
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Close(); |
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return retVal; |
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} |
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// End of file |
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