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/*
* 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.commons.logging.impl;
import java.io.Serializable;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.commons.logging.Log;
/**
* Implementation of the org.apache.commons.logging.Log
* interface that wraps the standard JDK logging mechanisms that were
* introduced in the Merlin release (JDK 1.4).
*
* @version $Id: Jdk14Logger.java 1448063 2013-02-20 10:01:41Z tn $
*/
public class Jdk14Logger implements Log, Serializable {
/** Serializable version identifier. */
private static final long serialVersionUID = 4784713551416303804L;
/**
* This member variable simply ensures that any attempt to initialise
* this class in a pre-1.4 JVM will result in an ExceptionInInitializerError.
* It must not be private, as an optimising compiler could detect that it
* is not used and optimise it away.
*/
protected static final Level dummyLevel = Level.FINE;
// ----------------------------------------------------------- Constructors
/**
* Construct a named instance of this Logger.
*
* @param name Name of the logger to be constructed
*/
public Jdk14Logger(String name) {
this.name = name;
logger = getLogger();
}
// ----------------------------------------------------- Instance Variables
/**
* The underlying Logger implementation we are using.
*/
protected transient Logger logger = null;
/**
* The name of the logger we are wrapping.
*/
protected String name = null;
// --------------------------------------------------------- Protected Methods
protected void log( Level level, String msg, Throwable ex ) {
Logger logger = getLogger();
if (logger.isLoggable(level)) {
// Hack (?) to get the stack trace.
Throwable dummyException = new Throwable();
StackTraceElement locations[] = dummyException.getStackTrace();
// LOGGING-132: use the provided logger name instead of the class name
String cname = name;
String method = "unknown";
// Caller will be the third element
if( locations != null && locations.length > 2 ) {
StackTraceElement caller = locations[2];
method = caller.getMethodName();
}
if( ex == null ) {
logger.logp( level, cname, method, msg );
} else {
logger.logp( level, cname, method, msg, ex );
}
}
}
// --------------------------------------------------------- Public Methods
/**
* Logs a message with java.util.logging.Level.FINE.
*
* @param message to log
* @see org.apache.commons.logging.Log#debug(Object)
*/
public void debug(Object message) {
log(Level.FINE, String.valueOf(message), null);
}
/**
* Logs a message with java.util.logging.Level.FINE.
*
* @param message to log
* @param exception log this cause
* @see org.apache.commons.logging.Log#debug(Object, Throwable)
*/
public void debug(Object message, Throwable exception) {
log(Level.FINE, String.valueOf(message), exception);
}
/**
* Logs a message with java.util.logging.Level.SEVERE.
*
* @param message to log
* @see org.apache.commons.logging.Log#error(Object)
*/
public void error(Object message) {
log(Level.SEVERE, String.valueOf(message), null);
}
/**
* Logs a message with java.util.logging.Level.SEVERE.
*
* @param message to log
* @param exception log this cause
* @see org.apache.commons.logging.Log#error(Object, Throwable)
*/
public void error(Object message, Throwable exception) {
log(Level.SEVERE, String.valueOf(message), exception);
}
/**
* Logs a message with java.util.logging.Level.SEVERE.
*
* @param message to log
* @see org.apache.commons.logging.Log#fatal(Object)
*/
public void fatal(Object message) {
log(Level.SEVERE, String.valueOf(message), null);
}
/**
* Logs a message with java.util.logging.Level.SEVERE.
*
* @param message to log
* @param exception log this cause
* @see org.apache.commons.logging.Log#fatal(Object, Throwable)
*/
public void fatal(Object message, Throwable exception) {
log(Level.SEVERE, String.valueOf(message), exception);
}
/**
* Return the native Logger instance we are using.
*/
public Logger getLogger() {
if (logger == null) {
logger = Logger.getLogger(name);
}
return logger;
}
/**
* Logs a message with java.util.logging.Level.INFO.
*
* @param message to log
* @see org.apache.commons.logging.Log#info(Object)
*/
public void info(Object message) {
log(Level.INFO, String.valueOf(message), null);
}
/**
* Logs a message with java.util.logging.Level.INFO.
*
* @param message to log
* @param exception log this cause
* @see org.apache.commons.logging.Log#info(Object, Throwable)
*/
public void info(Object message, Throwable exception) {
log(Level.INFO, String.valueOf(message), exception);
}
/**
* Is debug logging currently enabled?
*/
public boolean isDebugEnabled() {
return getLogger().isLoggable(Level.FINE);
}
/**
* Is error logging currently enabled?
*/
public boolean isErrorEnabled() {
return getLogger().isLoggable(Level.SEVERE);
}
/**
* Is fatal logging currently enabled?
*/
public boolean isFatalEnabled() {
return getLogger().isLoggable(Level.SEVERE);
}
/**
* Is info logging currently enabled?
*/
public boolean isInfoEnabled() {
return getLogger().isLoggable(Level.INFO);
}
/**
* Is trace logging currently enabled?
*/
public boolean isTraceEnabled() {
return getLogger().isLoggable(Level.FINEST);
}
/**
* Is warn logging currently enabled?
*/
public boolean isWarnEnabled() {
return getLogger().isLoggable(Level.WARNING);
}
/**
* Logs a message with java.util.logging.Level.FINEST.
*
* @param message to log
* @see org.apache.commons.logging.Log#trace(Object)
*/
public void trace(Object message) {
log(Level.FINEST, String.valueOf(message), null);
}
/**
* Logs a message with java.util.logging.Level.FINEST.
*
* @param message to log
* @param exception log this cause
* @see org.apache.commons.logging.Log#trace(Object, Throwable)
*/
public void trace(Object message, Throwable exception) {
log(Level.FINEST, String.valueOf(message), exception);
}
/**
* Logs a message with java.util.logging.Level.WARNING.
*
* @param message to log
* @see org.apache.commons.logging.Log#warn(Object)
*/
public void warn(Object message) {
log(Level.WARNING, String.valueOf(message), null);
}
/**
* Logs a message with java.util.logging.Level.WARNING.
*
* @param message to log
* @param exception log this cause
* @see org.apache.commons.logging.Log#warn(Object, Throwable)
*/
public void warn(Object message, Throwable exception) {
log(Level.WARNING, String.valueOf(message), exception);
}
}
