logger.java

Java开发最新的日志记录工具slf4j的源码

/*
 * Copyright 2001-2004 The Apache Software Foundation.
 * 
 * Licensed 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;

/**
 * <p>
 * This class is a minimal implementation of the original
 * <code>org.apache.log4j.Logger</code> class (as found in log4j 1.2) 
 * by delegation of all calls to a {@link org.slf4j.Logger.Logger} instance.
 * </p>
 *
 * @author Ceki G&uuml;lc&uuml; 
 * */
public class Logger extends Category {

  Logger(String name) {
    super(name);
  }

  public static Logger getLogger(String name) {
    return Log4jLoggerFactory.getLogger(name);
  }

  public static Logger getLogger(Class clazz) {
    return getLogger(clazz.getName());
  }
  
  /**
   * Does the obvious.
   * 
   * @return
   */
  public static Logger getRootLogger() {
    return Log4jLoggerFactory.getLogger(org.slf4j.Logger.ROOT_LOGGER_NAME);
  }

  
  /**
   * Delegates to {@link org.slf4j.Logger#isTraceEnabled} 
   * method of SLF4J.
   */
  public boolean isTraceEnabled() {
    return slf4jLogger.isTraceEnabled();
  }
  
  /**
   * Delegates to {@link org.slf4j.Logger#trace(String)} method in SLF4J.
   */
  public void trace(Object message) {
    // casting to String as SLF4J only accepts String instances, not Object
    // instances.
    slf4jLogger.trace(convertToString(message));
  }

  /**
   * Delegates to {@link org.slf4j.Logger#trace(String,Throwable)} 
   * method in SLF4J.
   */
  public void trace(Object message, Throwable t) {
    slf4jLogger.trace(convertToString(message), t);
  }

}