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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 org.apache.commons.logging.Log; import org.apache.log4j.Logger; import org.apache.log4j.Priority; import org.apache.log4j.Level; /** * <p>Implementation of {@link Log} that maps directly to a Log4J * <strong>Logger</strong>. Initial configuration of the corresponding * Logger instances should be done in the usual manner, as outlined in * the Log4J documentation.</p> * * @author <a href="mailto:sanders@apache.org">Scott Sanders</a> * @author Rod Waldhoff * @author Robert Burrell Donkin * @version $Id: Log4JLogger.java,v 1.11 2004/05/19 21:01:23 rdonkin Exp $ */ public class Log4JLogger implements Log, Serializable { // ------------------------------------------------------------- Attributes /** 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; /** Logger name */ private String name = null; // ------------------------------------------------------------ Constructor public Log4JLogger() { } /** * Base constructor. */ public Log4JLogger(String name) { this.name = name; this.logger = getLogger(); } /** For use with a log4j factory. */ public Log4JLogger(Logger logger) { this.name = logger.getName(); this.logger = logger; } // --------------------------------------------------------- Implementation /** * Log a message to the Log4j Logger with <code>TRACE</code> priority. * Currently logs to <code>DEBUG</code> level in Log4J. */ public void trace(Object message) { if (is12) { getLogger().log(FQCN, (Priority) Level.DEBUG, message, null); } else { getLogger().log(FQCN, Level.DEBUG, message, null); } } /** * Log an error to the Log4j Logger with <code>TRACE</code> priority. * Currently logs to <code>DEBUG</code> level in Log4J. */ public void trace(Object message, Throwable t) { if (is12) { getLogger().log(FQCN, (Priority) Level.DEBUG, message, t); } else { getLogger().log(FQCN, Level.DEBUG, message, t); } } /** * Log a message to the Log4j Logger with <code>DEBUG</code> priority. */ public void debug(Object message) { if (is12) { getLogger().log(FQCN, (Priority) Level.DEBUG, message, null); } else { getLogger().log(FQCN, Level.DEBUG, message, null); } } /** * Log an error to the Log4j Logger with <code>DEBUG</code> priority. */ public void debug(Object message, Throwable t) { if (is12) { getLogger().log(FQCN, (Priority) Level.DEBUG, message, t); } else { getLogger().log(FQCN, Level.DEBUG, message, t); } } /** * Log a message to the Log4j Logger with <code>INFO</code> priority. */ public void info(Object message) { if (is12) { getLogger().log(FQCN, (Priority) Level.INFO, message, null); } else { getLogger().log(FQCN, Level.INFO, message, null); } } /** * Log an error to the Log4j Logger with <code>INFO</code> priority. */ public void info(Object message, Throwable t) { if (is12) { getLogger().log(FQCN, (Priority) Level.INFO, message, t); } else { getLogger().log(FQCN, Level.INFO, message, t); } } /** * Log a message to the Log4j Logger with <code>WARN</code> priority. */ public void warn(Object message) { if (is12) { getLogger().log(FQCN, (Priority) Level.WARN, message, null); } else { getLogger().log(FQCN, Level.WARN, message, null); } } /** * Log an error to the Log4j Logger with <code>WARN</code> priority. */ public void warn(Object message, Throwable t) { if (is12) { getLogger().log(FQCN, (Priority) Level.WARN, message, t); } else { getLogger().log(FQCN, Level.WARN, message, t); } } /** * Log a message to the Log4j Logger with <code>ERROR</code> priority. */ public void error(Object message) { if (is12) { getLogger().log(FQCN, (Priority) Level.ERROR, message, null); } else { getLogger().log(FQCN, Level.ERROR, message, null); } } /** * Log an error to the Log4j Logger with <code>ERROR</code> priority. */ public void error(Object message, Throwable t) { if (is12) { getLogger().log(FQCN, (Priority) Level.ERROR, message, t); } else { getLogger().log(FQCN, Level.ERROR, message, t); } } /** * Log a message to the Log4j Logger with <code>FATAL</code> priority. */ public void fatal(Object message) { if (is12) { getLogger().log(FQCN, (Priority) Level.FATAL, message, null); } else { getLogger().log(FQCN, Level.FATAL, message, null); } } /** * Log an error to the Log4j Logger with <code>FATAL</code> priority. */ public void fatal(Object message, Throwable t) { if (is12) { getLogger().log(FQCN, (Priority) Level.FATAL, message, t); } else { getLogger().log(FQCN, Level.FATAL, message, t); } } /** * Return the native Logger instance we are using. */ public Logger getLogger() { if (logger == null) { logger = Logger.getLogger(name); } return (this.logger); } /** * Check whether the Log4j Logger used is enabled for <code>DEBUG</code> priority. */ public boolean isDebugEnabled() { return getLogger().isDebugEnabled(); } /** * Check whether the Log4j Logger used is enabled for <code>ERROR</code> priority. */ public boolean isErrorEnabled() { if (is12) { return getLogger().isEnabledFor((Priority) Level.ERROR); } else { return getLogger().isEnabledFor(Level.ERROR); } } /** * Check whether the Log4j Logger used is enabled for <code>FATAL</code> priority. */ public boolean isFatalEnabled() { if (is12) { return getLogger().isEnabledFor((Priority) Level.FATAL); } else { return getLogger().isEnabledFor(Level.FATAL); } } /** * Check whether the Log4j Logger used is enabled for <code>INFO</code> priority. */ public boolean isInfoEnabled() { return getLogger().isInfoEnabled(); } /** * Check whether the Log4j Logger used is enabled for <code>TRACE</code> priority. * For Log4J, this returns the value of <code>isDebugEnabled()</code> */ public boolean isTraceEnabled() { return getLogger().isDebugEnabled(); } /** * Check whether the Log4j Logger used is enabled for <code>WARN</code> priority. */ public boolean isWarnEnabled() { if (is12) { return getLogger().isEnabledFor((Priority) Level.WARN); } else { return getLogger().isEnabledFor(Level.WARN); } } }