author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 00:15:44 +0200 | |
changeset 0 | 05da4621cfb2 |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (c) 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: Writer for logging |
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* |
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*/ |
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|
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|
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package com.nokia.tools.themeinstaller.logger; |
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|
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import java.io.File; |
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import java.io.IOException; |
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import java.util.logging.ConsoleHandler; |
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import java.util.logging.FileHandler; |
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import java.util.logging.Level; |
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import java.util.logging.Logger; |
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|
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/** |
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* Class for writing logs to file or console. |
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* This LogWriter is a singleton version of using logging |
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* so that there is no need to instantiate Logger in |
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* every class that uses logs. |
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* |
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* NOTE: User of this class has to make sure that closeInstance() is |
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* called when logger is no longer used. If this is not called, |
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* the used file resources are not closed. |
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*/ |
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public class LogWriter |
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{ |
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// The logger used in writing. |
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private static Logger iLogger = Logger.getLogger( LogWriter.class.getName() ); |
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|
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// Singleton instance |
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private static LogWriter sInstance = null; |
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// Filename for log writing |
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private static String sLogFileName = null; |
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|
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// Log file constants |
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private final static String LOG_FILENAME = "ThemeInstaller"; |
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private final static String UNDERLINE_CHARACTER = "_"; |
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private final static String LOG_FILENAME_EXTENSION = ".log"; |
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// Date format for log filename |
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private final static String DATE_FORMAT = "yyyyMMdd_HHmmssSS"; |
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/** |
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* Instantiates a new log writer for console. |
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* |
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* @param aLevel The level |
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*/ |
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private LogWriter( Level aLevel ) |
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{ |
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iLogger.setLevel( aLevel ); |
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// If level == OFF, no need to continue the instantiating |
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if ( aLevel == Level.OFF ) |
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{ |
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return; |
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} |
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// Disabling parent handlers so that the console handler remains as only |
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// handler |
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iLogger.setUseParentHandlers( false ); |
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ConsoleHandler consoleHandler = new ConsoleHandler(); |
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consoleHandler.setFormatter( new LogFormatter() ); |
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iLogger.addHandler( consoleHandler ); |
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} |
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|
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/** |
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* Instantiates a new log writer for file. |
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* |
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* @param aDir The directory for log files |
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* @param aLevel The level |
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*/ |
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private LogWriter( File aDir, Level aLevel ) |
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{ |
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try |
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{ |
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iLogger.setLevel( aLevel ); |
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// If level == OFF, no need to continue the instantiating |
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if ( aLevel == Level.OFF ) |
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{ |
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return; |
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} |
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// Disabling parent handlers so that the file handler remains as only |
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// handler |
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iLogger.setUseParentHandlers( false ); |
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|
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String filename = validateDir( aDir ); |
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|
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FileHandler fileHandler = new FileHandler( filename ); |
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fileHandler.setFormatter( new LogFormatter() ); |
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iLogger.addHandler( fileHandler ); |
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} |
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catch ( IOException e ) |
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{ |
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iLogger.log( Level.SEVERE, "Unable to create logging file.", e ); |
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107 |
} |
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108 |
} |
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|
109 |
|
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110 |
/** |
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|
111 |
* Gets the level. |
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112 |
* |
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113 |
* @return The level |
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114 |
*/ |
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|
115 |
public Level getLevel() |
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116 |
{ |
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|
117 |
return iLogger.getLevel(); |
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118 |
} |
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|
119 |
|
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120 |
/** |
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121 |
* Close file. |
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122 |
*/ |
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|
123 |
private static void closeFile() |
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124 |
{ |
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|
125 |
if ( iLogger.getHandlers().length > 0 |
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|
126 |
// LogWriter has maximum of 1 handler |
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127 |
&& iLogger.getHandlers()[ 0 ] instanceof FileHandler ) |
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|
128 |
{ |
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|
129 |
iLogger.getHandlers()[ 0 ].close(); |
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|
130 |
} |
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131 |
} |
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|
132 |
|
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|
133 |
/** |
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|
134 |
* Validate that directory for logging exists. |
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|
135 |
* |
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|
136 |
* @param aDir The directory |
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|
137 |
* |
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|
138 |
* @return Log file name |
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|
139 |
*/ |
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|
140 |
private String validateDir( File aDir ) |
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Revision: 201003
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parents:
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|
141 |
{ |
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parents:
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|
142 |
if ( aDir.isFile() ) |
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Revision: 201003
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parents:
diff
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|
143 |
{ |
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Revision: 201003
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diff
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|
144 |
throw new IllegalArgumentException( "Invalid log file path. Not a directory: " + aDir ); |
05da4621cfb2
Revision: 201003
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parents:
diff
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|
145 |
} |
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parents:
diff
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|
146 |
|
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|
147 |
// Create directory structure |
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Revision: 201003
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|
148 |
if ( !aDir.exists() ) |
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parents:
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|
149 |
{ |
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|
150 |
aDir.mkdirs(); |
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Revision: 201003
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diff
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|
151 |
} |
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Revision: 201003
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parents:
diff
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|
152 |
|
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Revision: 201003
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parents:
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|
153 |
return aDir + File.separator + LOG_FILENAME + UNDERLINE_CHARACTER |
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Revision: 201003
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parents:
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|
154 |
+ LogFormatter.dateToString( DATE_FORMAT, System.currentTimeMillis() ) |
05da4621cfb2
Revision: 201003
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parents:
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|
155 |
+ LOG_FILENAME_EXTENSION; |
05da4621cfb2
Revision: 201003
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parents:
diff
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|
156 |
} |
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Revision: 201003
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parents:
diff
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|
157 |
|
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Revision: 201003
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parents:
diff
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|
158 |
/** |
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Revision: 201003
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parents:
diff
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|
159 |
* Sets the level for logging. |
05da4621cfb2
Revision: 201003
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parents:
diff
changeset
|
160 |
* |
05da4621cfb2
Revision: 201003
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parents:
diff
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|
161 |
* @param level The logging level in scale from 0 to 7 |
05da4621cfb2
Revision: 201003
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parents:
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|
162 |
*/ |
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Revision: 201003
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parents:
diff
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|
163 |
public void setLevel( int aLevel ) |
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Revision: 201003
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|
164 |
{ |
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Revision: 201003
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parents:
diff
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|
165 |
if ( aLevel < 0 || 7 < aLevel ) |
05da4621cfb2
Revision: 201003
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parents:
diff
changeset
|
166 |
{ |
05da4621cfb2
Revision: 201003
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parents:
diff
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|
167 |
throw new IllegalStateException( |
05da4621cfb2
Revision: 201003
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parents:
diff
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|
168 |
"Trying to set invalid logging level" ); |
05da4621cfb2
Revision: 201003
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parents:
diff
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|
169 |
} |
05da4621cfb2
Revision: 201003
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parents:
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|
170 |
switch ( aLevel ) |
05da4621cfb2
Revision: 201003
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parents:
diff
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|
171 |
{ |
05da4621cfb2
Revision: 201003
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parents:
diff
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|
172 |
case 0: |
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Revision: 201003
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diff
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|
173 |
iLogger.setLevel( Level.ALL ); |
05da4621cfb2
Revision: 201003
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parents:
diff
changeset
|
174 |
break; |
05da4621cfb2
Revision: 201003
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parents:
diff
changeset
|
175 |
case 1: |
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Revision: 201003
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|
176 |
iLogger.setLevel( Level.FINEST ); |
05da4621cfb2
Revision: 201003
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parents:
diff
changeset
|
177 |
break; |
05da4621cfb2
Revision: 201003
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parents:
diff
changeset
|
178 |
case 2: |
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Revision: 201003
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|
179 |
iLogger.setLevel( Level.FINER ); |
05da4621cfb2
Revision: 201003
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parents:
diff
changeset
|
180 |
break; |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
181 |
case 3: |
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Revision: 201003
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parents:
diff
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|
182 |
iLogger.setLevel( Level.FINE ); |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
183 |
break; |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
184 |
case 4: |
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Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
185 |
iLogger.setLevel( Level.CONFIG ); |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
186 |
break; |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
187 |
case 5: |
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Revision: 201003
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parents:
diff
changeset
|
188 |
iLogger.setLevel( Level.INFO ); |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
189 |
break; |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
190 |
case 6: |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
191 |
iLogger.setLevel( Level.WARNING ); |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
192 |
break; |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
193 |
case 7: |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
194 |
iLogger.setLevel( Level.SEVERE ); |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
195 |
break; |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
196 |
default: |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
197 |
break; |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
198 |
} |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
199 |
} |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
200 |
|
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
201 |
/** |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
202 |
* Check if logger is in console mode. |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
203 |
* |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
204 |
* @return true, if Logger is writing on console |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
205 |
*/ |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
206 |
public boolean inConsoleMode() |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
207 |
{ |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
208 |
if ( iLogger.getHandlers().length > 0 |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
209 |
// LogWriter has maximum of 1 handler |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
210 |
&& iLogger.getHandlers()[ 0 ] instanceof ConsoleHandler ) |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
211 |
{ |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
212 |
return true; |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
213 |
} |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
214 |
return false; |
05da4621cfb2
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
215 |
} |
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|
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/** |
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* Log severe. |
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* |
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* @param aMessage The message for logging |
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*/ |
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public void logSevere( String aMessage ) |
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{ |
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iLogger.log( Level.SEVERE, aMessage ); |
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} |
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/** |
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* Log warning. |
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* |
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* @param aMessage The message for logging |
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*/ |
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public void logWarning( String aMessage ) |
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{ |
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iLogger.log( Level.WARNING, aMessage ); |
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} |
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|
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/** |
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* Log info. |
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* |
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* @param aMessage The message for logging |
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*/ |
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public void logInfo( String aMessage ) |
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{ |
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iLogger.log( Level.INFO, aMessage ); |
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} |
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|
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/** |
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* Log message. |
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* |
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* @param aMessage The message for logging |
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*/ |
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public void logConfig( String aMessage ) |
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{ |
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iLogger.log( Level.CONFIG, aMessage ); |
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} |
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|
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/** |
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* Log fine. |
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* |
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* @param aMessage The message for logging |
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*/ |
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public void logFine( String aMessage ) |
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{ |
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iLogger.log( Level.FINE, aMessage ); |
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} |
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/** |
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* Closes singleton resources and removes the singleton instance |
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*/ |
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public static synchronized void closeInstance() |
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{ |
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closeFile(); |
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sInstance = null; |
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} |
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|
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/** |
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* Gets the single instance of LogWriter. |
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* Note that initialize method has to be called |
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* before this. |
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* |
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* @return Single instance of LogWriter |
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*/ |
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public static synchronized LogWriter getInstance() |
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{ |
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if ( sInstance == null ) |
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{ |
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// Initialize method not called yet |
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sInstance = new LogWriter( Level.OFF ); |
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} |
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return sInstance; |
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} |
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|
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/** |
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* Initialize new instance of LogWriter. |
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* Note that the default logging level is Level.ALL. |
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* |
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* @param aDir The directory for writing log |
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* |
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* @throws IOException Signals that an I/O exception has occurred. |
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*/ |
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public static void initialize( File aDir ) throws IOException |
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{ |
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// Already initialized if: |
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// sInstance is not null AND |
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// sLogFileName equals with aLogFile |
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|
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if ( sInstance != null && |
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( sLogFileName != null && aDir != null && sLogFileName.equals( aDir.getPath() ) || |
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( sLogFileName == null && aDir == null ) ) ) |
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{ |
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return; |
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} |
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|
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// Create a new instance |
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// If no log file given, the log is written in console |
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if ( aDir == null ) |
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{ |
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sInstance = new LogWriter( Level.ALL ); |
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sLogFileName = null; |
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} |
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else |
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{ |
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sInstance = new LogWriter( aDir, Level.ALL ); |
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sLogFileName = aDir.getPath(); |
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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} |