/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You under the Apache License, Version 2.0
    * (the "License"); you may not use this file except in compliance with
    * the License.  You may obtain a copy of the License at
    *
    *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.log4j.spi;
  
  import org.apache.log4j.Level;
  import org.apache.log4j.Logger;
  import org.apache.log4j.ULogger;
  import org.apache.log4j.helpers.MessageFormatter;
  
  
  /**
   * An implementation of ULogger on org.apache.log4j.Logger.
   */
  public final class Log4JULogger implements ULogger {
  
      /**
       * Wrapped log4j logger.
       */
      private final Logger logger;
  
      /**
       * Create a new instance.
       *
       * @param l logger, may not be null.
       */
      public Log4JULogger(final Logger l) {
          super();
          if (l == null) {
              throw new NullPointerException("l");
          }
          logger = l;
      }
  
      /**
       * {@inheritDoc}
       */
      public boolean isDebugEnabled() {
          return logger.isDebugEnabled();
      }
  
      /**
       * {@inheritDoc}
       */
      public void debug(final Object msg) {
          logger.debug(msg);
      }
  
      /**
       * {@inheritDoc}
       */
      public void debug(final Object parameterizedMsg,
                        final Object param1) {
          if (logger.isDebugEnabled()) {
              logger.debug(MessageFormatter.format(
                  parameterizedMsg.toString(), param1));
          }
      }
  
      /**
       * {@inheritDoc}
       */
      public void debug(final String parameterizedMsg,
                        final Object param1,
                        final Object param2) {
          if (logger.isDebugEnabled()) {
              logger.debug(MessageFormatter.format(
                  parameterizedMsg, param1, param2));
          }
      }
  
      /**
       * {@inheritDoc}
       */
      public void debug(final Object msg,
                        final Throwable t) {
          logger.debug(msg, t);
      }
  
  
      /**
       * {@inheritDoc}
       */
      public boolean isInfoEnabled() {
          return logger.isInfoEnabled();
      }
 
     /**
      * {@inheritDoc}
      */
     public void info(final Object msg) {
         logger.info(msg);
     }
 
 
     /**
      * {@inheritDoc}
      */
     public void info(final Object parameterizedMsg,
                      final Object param1) {
         if (logger.isInfoEnabled()) {
             logger.info(MessageFormatter.format(
                 parameterizedMsg.toString(), param1));
         }
     }
 
     /**
      * {@inheritDoc}
      */
     public void info(final String parameterizedMsg,
                      final Object param1,
                      final Object param2) {
         if (logger.isInfoEnabled()) {
             logger.info(MessageFormatter.format(
                 parameterizedMsg,
                 param1,
                 param2));
         }
     }
 
     /**
      * {@inheritDoc}
      */
     public void info(final Object msg, final Throwable t) {
         logger.info(msg, t);
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean isWarnEnabled() {
         return logger.isEnabledFor(Level.WARN);
     }
 
     /**
      * {@inheritDoc}
      */
     public void warn(final Object msg) {
         logger.warn(msg);
     }
 
     /**
      * {@inheritDoc}
      */
     public void warn(final Object parameterizedMsg,
                      final Object param1) {
         if (logger.isEnabledFor(Level.WARN)) {
             logger.warn(MessageFormatter.format(
                 parameterizedMsg.toString(), param1));
         }
     }
 
     /**
      * {@inheritDoc}
      */
     public void warn(final String parameterizedMsg,
                      final Object param1,
                      final Object param2) {
         if (logger.isEnabledFor(Level.WARN)) {
             logger.warn(MessageFormatter.format(
                 parameterizedMsg, param1, param2));
         }
     }
 
     /**
      * {@inheritDoc}
      */
     public void warn(final Object msg, final Throwable t) {
         logger.warn(msg, t);
     }
 
     /**
      * {@inheritDoc}
      */
     public boolean isErrorEnabled() {
         return logger.isEnabledFor(Level.ERROR);
     }
 
     /**
      * {@inheritDoc}
      */
     public void error(final Object msg) {
         logger.error(msg);
     }
 
 
     /**
      * {@inheritDoc}
      */
     public void error(final Object parameterizedMsg, final Object param1) {
         if (logger.isEnabledFor(Level.ERROR)) {
             logger.error(MessageFormatter.format(
                 parameterizedMsg.toString(), param1));
         }
     }
 
     /**
      * {@inheritDoc}
      */
     public void error(final String parameterizedMsg,
                       final Object param1,
                       final Object param2) {
         if (logger.isEnabledFor(Level.ERROR)) {
             logger.error(MessageFormatter.format(
                 parameterizedMsg, param1, param2));
         }
     }
 
     /**
      * {@inheritDoc}
      */
     public void error(final Object msg, final Throwable t) {
         logger.error(msg, t);
     }
 
 }