/*
* 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.commons.logging.impl;
import java.io.ObjectStreamException;
import java.io.Serializable;
import org.apache.commons.logging.Log;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Implementation of {@link Log org.apache.commons.logging.Log} interface which
* delegates all processing to a wrapped {@link Logger org.slf4j.Logger}
* instance.
*
* <p>
* JCL's FATAL level is mapped to ERROR. All other levels map one to one.
*
* @author Ceki Gülcü
*/
public class SLF4JLog implements Log, Serializable {
private static final long serialVersionUID = 680728617011167209L;
// used to store this logger's name to recreate it after serialization
protected String name;
// in both Log4jLogger and Jdk14Logger classes in the original JCL, the
// logger instance is transient
private transient Logger logger;
SLF4JLog(Logger logger) {
this.logger = logger;
this.name = logger.getName();
}
/**
* Directly delegates to the wrapped <code>org.slf4j.Logger</code> instance.
*/
public boolean isDebugEnabled() {
return logger.isDebugEnabled();
}
/**
* Directly delegates to the wrapped <code>org.slf4j.Logger</code> instance.
*/
public boolean isErrorEnabled() {
return logger.isErrorEnabled();
}
/**
* Delegates to the <code>isErrorEnabled<code> method of the wrapped
* <code>org.slf4j.Logger</code> instance.
*/
public boolean isFatalEnabled() {
return logger.isErrorEnabled();
}
/**
* Directly delegates to the wrapped <code>org.slf4j.Logger</code> instance.
*/
public boolean isInfoEnabled() {
return logger.isInfoEnabled();
}
/**
* Delegates to the <code>isDebugEnabled<code> method of the wrapped
* <code>org.slf4j.Logger</code> instance.
*/
public boolean isTraceEnabled() {
return logger.isTraceEnabled();
}
/**
* Directly delegates to the wrapped <code>org.slf4j.Logger</code> instance.
*/
public boolean isWarnEnabled() {
return logger.isWarnEnabled();
}
/**
* Converts the input parameter to String and then delegates to the debug
* method of the wrapped <code>org.slf4j.Logger</code> instance.
*
* @param message
* the message to log. Converted to {@link String}
*/
public void trace(Object message) {
logger.trace(String.valueOf(message));
}
/**
* Converts the first input parameter to String and then delegates to the
* debug method of the wrapped <code>org.slf4j.Logger</code> instance.
*
* @param message
* the message to log. Converted to {@link String}
* @param t
* the exception to log
*/
public void trace(Object message, Throwable t) {
logger.trace(String.valueOf(message), t);
}
/**
* Converts the input parameter to String and then delegates to the wrapped
* <code>org.slf4j.Logger</code> instance.
*
* @param message
* the message to log. Converted to {@link String}
*/
public void debug(Object message) {
logger.debug(String.valueOf(message));
}
/**
* Converts the first input parameter to String and then delegates to the
* wrapped <code>org.slf4j.Logger</code> instance.
*
* @param message
* the message to log. Converted to {@link String}
* @param t
* the exception to log
*/
public void debug(Object message, Throwable t) {
logger.debug(String.valueOf(message), t);
}
/**
* Converts the input parameter to String and then delegates to the wrapped
* <code>org.slf4j.Logger</code> instance.
*
* @param message
* the message to log. Converted to {@link String}
*/
public void info(Object message) {
logger.info(String.valueOf(message));
}
/**
* Converts the first input parameter to String and then delegates to the
* wrapped <code>org.slf4j.Logger</code> instance.
*
* @param message
* the message to log. Converted to {@link String}
* @param t
* the exception to log
*/
public void info(Object message, Throwable t) {
logger.info(String.valueOf(message), t);
}
/**
* Converts the input parameter to String and then delegates to the wrapped
* <code>org.slf4j.Logger</code> instance.
*
* @param message
* the message to log. Converted to {@link String}
*/
public void warn(Object message) {
logger.warn(String.valueOf(message));
}
/**
* Converts the first input parameter to String and then delegates to the
* wrapped <code>org.slf4j.Logger</code> instance.
*
* @param message
* the message to log. Converted to {@link String}
* @param t
* the exception to log
*/
public void warn(Object message, Throwable t) {
logger.warn(String.valueOf(message), t);
}
/**
* Converts the input parameter to String and then delegates to the wrapped
* <code>org.slf4j.Logger</code> instance.
*
* @param message
* the message to log. Converted to {@link String}
*/
public void error(Object message) {
logger.error(String.valueOf(message));
}
/**
* Converts the first input parameter to String and then delegates to the
* wrapped <code>org.slf4j.Logger</code> instance.
*
* @param message
* the message to log. Converted to {@link String}
* @param t
* the exception to log
*/
public void error(Object message, Throwable t) {
logger.error(String.valueOf(message), t);
}
/**
* Converts the input parameter to String and then delegates to the error
* method of the wrapped <code>org.slf4j.Logger</code> instance.
*
* @param message
* the message to log. Converted to {@link String}
*/
public void fatal(Object message) {
logger.error(String.valueOf(message));
}
/**
* Converts the first input parameter to String and then delegates to the
* error method of the wrapped <code>org.slf4j.Logger</code> instance.
*
* @param message
* the message to log. Converted to {@link String}
* @param t
* the exception to log
*/
public void fatal(Object message, Throwable t) {
logger.error(String.valueOf(message), t);
}
/**
* Replace this instance with a homonymous (same name) logger returned by
* LoggerFactory. Note that this method is only called during deserialization.
*
* @return logger with same name as returned by LoggerFactory
* @throws ObjectStreamException
*/
protected Object readResolve() throws ObjectStreamException {
Logger logger = LoggerFactory.getLogger(this.name);
return new SLF4JLog(logger);
}
}