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      1 /**
      2  * Copyright (c) 2004-2011 QOS.ch
      3  * All rights reserved.
      4  *
      5  * Permission is hereby granted, free  of charge, to any person obtaining
      6  * a  copy  of this  software  and  associated  documentation files  (the
      7  * "Software"), to  deal in  the Software without  restriction, including
      8  * without limitation  the rights to  use, copy, modify,  merge, publish,
      9  * distribute,  sublicense, and/or sell  copies of  the Software,  and to
     10  * permit persons to whom the Software  is furnished to do so, subject to
     11  * the following conditions:
     12  *
     13  * The  above  copyright  notice  and  this permission  notice  shall  be
     14  * included in all copies or substantial portions of the Software.
     15  *
     16  * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
     17  * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
     18  * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
     19  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
     20  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     21  * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
     22  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  */
     25 package org.slf4j.cal10n;
     26 
     27 import org.slf4j.Logger;
     28 import org.slf4j.Marker;
     29 import org.slf4j.MarkerFactory;
     30 import org.slf4j.ext.LoggerWrapper;
     31 import org.slf4j.spi.LocationAwareLogger;
     32 
     33 import ch.qos.cal10n.IMessageConveyor;
     34 import ch.qos.cal10n.MessageParameterObj;
     35 
     36 /**
     37  * A logger specialized in localized logging. Localization is based in the <a
     38  * href="http://cal10n.qos.ch">CAL10N project</p>.
     39  *
     40  * @author Ceki G&uuml;lc&uuml;
     41  */
     42 public class LocLogger extends LoggerWrapper implements Logger {
     43 
     44     private static final String FQCN = LocLogger.class.getName();
     45 
     46     /**
     47      * Every localized message logged by a LocLogger will bear this marker. It
     48      * allows marker-aware implementations to perform additional processing on
     49      * localized messages.
     50      */
     51     static Marker LOCALIZED = MarkerFactory.getMarker("LOCALIZED");
     52 
     53     final IMessageConveyor imc;
     54 
     55     public LocLogger(Logger logger, IMessageConveyor imc) {
     56         super(logger, LoggerWrapper.class.getName());
     57         if (imc == null) {
     58             throw new IllegalArgumentException("IMessageConveyor cannot be null");
     59         }
     60         this.imc = imc;
     61     }
     62 
     63     /**
     64      * Log a localized message at the TRACE level.
     65      *
     66      * @param key
     67      *          the key used for localization
     68      * @param args
     69      *          optional arguments
     70      */
     71     public void trace(Enum<?> key, Object... args) {
     72         if (!logger.isTraceEnabled()) {
     73             return;
     74         }
     75         String translatedMsg = imc.getMessage(key, args);
     76         MessageParameterObj mpo = new MessageParameterObj(key, args);
     77 
     78         if (instanceofLAL) {
     79             ((LocationAwareLogger) logger).log(LOCALIZED, FQCN, LocationAwareLogger.TRACE_INT, translatedMsg, args, null);
     80         } else {
     81             logger.trace(LOCALIZED, translatedMsg, mpo);
     82         }
     83     }
     84 
     85     /**
     86      * Log a localized message at the DEBUG level.
     87      *
     88      * @param key
     89      *          the key used for localization
     90      * @param args
     91      *          optional arguments
     92      */
     93     public void debug(Enum<?> key, Object... args) {
     94         if (!logger.isDebugEnabled()) {
     95             return;
     96         }
     97         String translatedMsg = imc.getMessage(key, args);
     98         MessageParameterObj mpo = new MessageParameterObj(key, args);
     99 
    100         if (instanceofLAL) {
    101             ((LocationAwareLogger) logger).log(LOCALIZED, FQCN, LocationAwareLogger.DEBUG_INT, translatedMsg, args, null);
    102         } else {
    103             logger.debug(LOCALIZED, translatedMsg, mpo);
    104         }
    105     }
    106 
    107     /**
    108      * Log a localized message at the INFO level.
    109      *
    110      * @param key
    111      *          the key used for localization
    112      * @param args
    113      *          optional arguments
    114      */
    115     public void info(Enum<?> key, Object... args) {
    116         if (!logger.isInfoEnabled()) {
    117             return;
    118         }
    119         String translatedMsg = imc.getMessage(key, args);
    120         MessageParameterObj mpo = new MessageParameterObj(key, args);
    121 
    122         if (instanceofLAL) {
    123             ((LocationAwareLogger) logger).log(LOCALIZED, FQCN, LocationAwareLogger.INFO_INT, translatedMsg, args, null);
    124         } else {
    125             logger.info(LOCALIZED, translatedMsg, mpo);
    126         }
    127     }
    128 
    129     /**
    130      * Log a localized message at the WARN level.
    131      *
    132      * @param key
    133      *          the key used for localization
    134      * @param args
    135      *          optional arguments
    136      */
    137     public void warn(Enum<?> key, Object... args) {
    138         if (!logger.isWarnEnabled()) {
    139             return;
    140         }
    141         String translatedMsg = imc.getMessage(key, args);
    142         MessageParameterObj mpo = new MessageParameterObj(key, args);
    143 
    144         if (instanceofLAL) {
    145             ((LocationAwareLogger) logger).log(LOCALIZED, FQCN, LocationAwareLogger.WARN_INT, translatedMsg, args, null);
    146         } else {
    147             logger.warn(LOCALIZED, translatedMsg, mpo);
    148         }
    149     }
    150 
    151     /**
    152      * Log a localized message at the ERROR level.
    153      *
    154      * @param key
    155      *          the key used for localization
    156      * @param args
    157      *          optional arguments
    158      */
    159     public void error(Enum<?> key, Object... args) {
    160         if (!logger.isErrorEnabled()) {
    161             return;
    162         }
    163         String translatedMsg = imc.getMessage(key, args);
    164         MessageParameterObj mpo = new MessageParameterObj(key, args);
    165 
    166         if (instanceofLAL) {
    167             ((LocationAwareLogger) logger).log(LOCALIZED, FQCN, LocationAwareLogger.ERROR_INT, translatedMsg, args, null);
    168         } else {
    169             logger.error(LOCALIZED, translatedMsg, mpo);
    170         }
    171     }
    172 
    173 }
    174