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/*
* 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.asteriskjava.util.internal;
import java.io.Serializable;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.apache.log4j.Priority;
import org.asteriskjava.util.Log;
/**
* Implementation of {@link Log} that maps directly to a Log4J
* Logger.
*
* Initial configuration of the corresponding Logger instances should be done in
* the usual manner, as outlined in the Log4J documentation.
*
* More or less "stolen" from Apache's commons-logging.
*
* @author Scott Sanders
* @author Rod Waldhoff
* @author Robert Burrell Donkin
* @version $Id$
*/
public class Log4JLogger implements Log, Serializable
{
// ------------------------------------------------------------- Attributes
/**
* The serial version identifier.
*/
private static final long serialVersionUID = 3545240215095883829L;
/** The fully qualified name of the Log4JLogger class. */
private static final String FQCN = Log4JLogger.class.getName();
private static final boolean IS12 = Priority.class.isAssignableFrom(Level.class);
/** Log to this logger */
private transient Logger logger = null; // NOPMD by srt on 7/5/06 11:18 PM
/** Logger name */
private String name = null;
// ------------------------------------------------------------ Constructor
public Log4JLogger()
{
}
/**
* Base constructor.
*/
public Log4JLogger(Class< ? > clazz)
{
this.name = clazz.getName();
this.logger = getLogger();
}
// --------------------------------------------------------- Implementation
/**
* Log a message to the Log4j Logger with TRACE priority.
* Currently logs to DEBUG level in Log4J.
*/
public void trace(Object message)
{
if (IS12)
{
getLogger().log(FQCN, Level.DEBUG, message, null);
}
else
{
getLogger().log(FQCN, Level.DEBUG, message, null);
}
}
/**
* Log an error to the Log4j Logger with TRACE priority.
* Currently logs to DEBUG level in Log4J.
*/
public void trace(Object message, Throwable t)
{
if (IS12)
{
getLogger().log(FQCN, Level.DEBUG, message, t);
}
else
{
getLogger().log(FQCN, Level.DEBUG, message, t);
}
}
/**
* Log a message to the Log4j Logger with DEBUG priority.
*/
public void debug(Object message)
{
if (IS12)
{
getLogger().log(FQCN, Level.DEBUG, message, null);
}
else
{
getLogger().log(FQCN, Level.DEBUG, message, null);
}
}
/**
* Log an error to the Log4j Logger with DEBUG priority.
*/
public void debug(Object message, Throwable t)
{
if (IS12)
{
getLogger().log(FQCN, Level.DEBUG, message, t);
}
else
{
getLogger().log(FQCN, Level.DEBUG, message, t);
}
}
/**
* Log a message to the Log4j Logger with INFO priority.
*/
public void info(Object message)
{
if (IS12)
{
getLogger().log(FQCN, Level.INFO, message, null);
}
else
{
getLogger().log(FQCN, Level.INFO, message, null);
}
}
/**
* Log an error to the Log4j Logger with INFO priority.
*/
public void info(Object message, Throwable t)
{
if (IS12)
{
getLogger().log(FQCN, Level.INFO, message, t);
}
else
{
getLogger().log(FQCN, Level.INFO, message, t);
}
}
/**
* Log a message to the Log4j Logger with WARN priority.
*/
public void warn(Object message)
{
if (IS12)
{
getLogger().log(FQCN, Level.WARN, message, null);
}
else
{
getLogger().log(FQCN, Level.WARN, message, null);
}
}
/**
* Log an error to the Log4j Logger with WARN priority.
*/
public void warn(Object message, Throwable t)
{
if (IS12)
{
getLogger().log(FQCN, Level.WARN, message, t);
}
else
{
getLogger().log(FQCN, Level.WARN, message, t);
}
}
/**
* Log a message to the Log4j Logger with ERROR priority.
*/
public void error(Object message)
{
if (IS12)
{
getLogger().log(FQCN, Level.ERROR, message, null);
}
else
{
getLogger().log(FQCN, Level.ERROR, message, null);
}
}
/**
* Log an error to the Log4j Logger with ERROR priority.
*/
public void error(Object message, Throwable t)
{
if (IS12)
{
getLogger().log(FQCN, Level.ERROR, message, t);
}
else
{
getLogger().log(FQCN, Level.ERROR, message, t);
}
}
/**
* Log a message to the Log4j Logger with FATAL priority.
*/
public void fatal(Object message)
{
if (IS12)
{
getLogger().log(FQCN, Level.FATAL, message, null);
}
else
{
getLogger().log(FQCN, Level.FATAL, message, null);
}
}
/**
* Log an error to the Log4j Logger with FATAL priority.
*/
public void fatal(Object message, Throwable t)
{
if (IS12)
{
getLogger().log(FQCN, Level.FATAL, message, t);
}
else
{
getLogger().log(FQCN, Level.FATAL, message, t);
}
}
/**
* Return the native Logger instance we are using.
*/
public final Logger getLogger()
{
if (logger == null)
{
logger = Logger.getLogger(name);
}
return this.logger;
}
/**
* Check whether the Log4j Logger used is enabled for DEBUG
* priority.
*/
public boolean isDebugEnabled()
{
return getLogger().isDebugEnabled();
}
/**
* Check whether the Log4j Logger used is enabled for ERROR
* priority.
*/
public boolean isErrorEnabled()
{
if (IS12)
{
return getLogger().isEnabledFor(Level.ERROR);
}
return getLogger().isEnabledFor(Level.ERROR);
}
/**
* Check whether the Log4j Logger used is enabled for FATAL
* priority.
*/
public boolean isFatalEnabled()
{
if (IS12)
{
return getLogger().isEnabledFor(Level.FATAL);
}
return getLogger().isEnabledFor(Level.FATAL);
}
/**
* Check whether the Log4j Logger used is enabled for INFO
* priority.
*/
public boolean isInfoEnabled()
{
return getLogger().isInfoEnabled();
}
/**
* Check whether the Log4j Logger used is enabled for TRACE
* priority. For Log4J, this returns the value of
* isDebugEnabled()
*/
public boolean isTraceEnabled()
{
return getLogger().isDebugEnabled();
}
/**
* Check whether the Log4j Logger used is enabled for WARN
* priority.
*/
public boolean isWarnEnabled()
{
if (IS12)
{
return getLogger().isEnabledFor(Level.WARN);
}
return getLogger().isEnabledFor(Level.WARN);
}
}