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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.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).

* * @author Scott Sanders * @author Berin Loritsch * @author Peter Donald * @version $Revision: 1.13 $ $Date: 2004/06/06 21:10:21 $ */ public class Jdk14Logger implements Log, Serializable { // ----------------------------------------------------------- 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; // --------------------------------------------------------- Public Methods private 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(); // Caller will be the third element String cname="unknown"; String method="unknown"; if( locations!=null && locations.length >2 ) { StackTraceElement caller=locations[2]; cname=caller.getClassName(); method=caller.getMethodName(); } if( ex==null ) { logger.logp( level, cname, method, msg ); } else { logger.logp( level, cname, method, msg, ex ); } } } /** * Log a message with debug log level. */ public void debug(Object message) { log(Level.FINE, String.valueOf(message), null); } /** * Log a message and exception with debug log level. */ public void debug(Object message, Throwable exception) { log(Level.FINE, String.valueOf(message), exception); } /** * Log a message with error log level. */ public void error(Object message) { log(Level.SEVERE, String.valueOf(message), null); } /** * Log a message and exception with error log level. */ public void error(Object message, Throwable exception) { log(Level.SEVERE, String.valueOf(message), exception); } /** * Log a message with fatal log level. */ public void fatal(Object message) { log(Level.SEVERE, String.valueOf(message), null); } /** * Log a message and exception with fatal log level. */ 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); } /** * Log a message with info log level. */ public void info(Object message) { log(Level.INFO, String.valueOf(message), null); } /** * Log a message and exception with info log level. */ 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)); } /** * Log a message with trace log level. */ public void trace(Object message) { log(Level.FINEST, String.valueOf(message), null); } /** * Log a message and exception with trace log level. */ public void trace(Object message, Throwable exception) { log(Level.FINEST, String.valueOf(message), exception); } /** * Log a message with warn log level. */ public void warn(Object message) { log(Level.WARNING, String.valueOf(message), null); } /** * Log a message and exception with warn log level. */ public void warn(Object message, Throwable exception) { log(Level.WARNING, String.valueOf(message), exception); } }
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