/* * 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 org.apache.commons.logging.Log;import org.apache.log4j.Category;import org.apache.log4j.Priority;/** * <p>Implementation of {@link Log} that maps directly to a Log4J * <strong>Category</strong>.  Initial configuration of the corresponding * Category instances should be done in the usual manner, as outlined in * the Log4J documentation.</p> * * @deprecated Use {@link Log4JLogger} instead. * * @author <a href="mailto:sanders@apache.org">Scott Sanders</a> * @author Rod Waldhoff * @author Robert Burrell Donkin * @version $Id: Log4JCategoryLog.java,v 1.15 2004/02/28 21:46:45 craigmcc Exp $ */public final class Log4JCategoryLog implements Log {    // ------------------------------------------------------------- Attributes    /** The fully qualified name of the Log4JCategoryLog class. */    private static final String FQCN = Log4JCategoryLog.class.getName();    /** Log to this category */    private Category category = null;    // ------------------------------------------------------------ Constructor    public Log4JCategoryLog() {    }    /**     * Base constructor.     */    public Log4JCategoryLog(String name) {        this.category=Category.getInstance(name);    }    /** For use with a log4j factory.     */    public Log4JCategoryLog(Category category ) {        this.category=category;    }    // ---------------------------------------------------------- Implmentation    /**     * Log a message to the Log4j Category with <code>TRACE</code> priority.     * Currently logs to <code>DEBUG</code> level in Log4J.     */    public void trace(Object message) {        category.log(FQCN, Priority.DEBUG, message, null);    }    /**     * Log an error to the Log4j Category with <code>TRACE</code> priority.     * Currently logs to <code>DEBUG</code> level in Log4J.     */    public void trace(Object message, Throwable t) {        category.log(FQCN, Priority.DEBUG, message, t );    }    /**     * Log a message to the Log4j Category with <code>DEBUG</code> priority.     */    public void debug(Object message) {        category.log(FQCN, Priority.DEBUG, message, null);    }    /**     * Log an error to the Log4j Category with <code>DEBUG</code> priority.     */    public void debug(Object message, Throwable t) {        category.log(FQCN, Priority.DEBUG, message, t );    }    /**     * Log a message to the Log4j Category with <code>INFO</code> priority.     */    public void info(Object message) {        category.log(FQCN, Priority.INFO, message, null );    }    /**     * Log an error to the Log4j Category with <code>INFO</code> priority.     */    public void info(Object message, Throwable t) {        category.log(FQCN, Priority.INFO, message, t );    }    /**     * Log a message to the Log4j Category with <code>WARN</code> priority.     */    public void warn(Object message) {        category.log(FQCN, Priority.WARN, message, null );    }    /**     * Log an error to the Log4j Category with <code>WARN</code> priority.     */    public void warn(Object message, Throwable t) {        category.log(FQCN, Priority.WARN, message, t );    }    /**     * Log a message to the Log4j Category with <code>ERROR</code> priority.     */    public void error(Object message) {        category.log(FQCN, Priority.ERROR, message, null );    }    /**     * Log an error to the Log4j Category with <code>ERROR</code> priority.     */    public void error(Object message, Throwable t) {        category.log(FQCN, Priority.ERROR, message, t );    }    /**     * Log a message to the Log4j Category with <code>FATAL</code> priority.     */    public void fatal(Object message) {        category.log(FQCN, Priority.FATAL, message, null );    }    /**     * Log an error to the Log4j Category with <code>FATAL</code> priority.     */    public void fatal(Object message, Throwable t) {        category.log(FQCN, Priority.FATAL, message, t );    }    /**     * Return the native Category instance we are using.     */    public Category getCategory() {        return (this.category);    }    /**     * Check whether the Log4j Category used is enabled for <code>DEBUG</code> priority.     */    public boolean isDebugEnabled() {        return category.isDebugEnabled();    }     /**     * Check whether the Log4j Category used is enabled for <code>ERROR</code> priority.     */    public boolean isErrorEnabled() {        return category.isEnabledFor(Priority.ERROR);    }    /**     * Check whether the Log4j Category used is enabled for <code>FATAL</code> priority.     */    public boolean isFatalEnabled() {        return category.isEnabledFor(Priority.FATAL);    }    /**     * Check whether the Log4j Category used is enabled for <code>INFO</code> priority.     */    public boolean isInfoEnabled() {        return category.isInfoEnabled();    }    /**     * Check whether the Log4j Category used is enabled for <code>TRACE</code> priority.     * For Log4J, this returns the value of <code>isDebugEnabled()</code>     */    public boolean isTraceEnabled() {        return category.isDebugEnabled();    }    /**     * Check whether the Log4j Category used is enabled for <code>WARN</code> priority.     */    public boolean isWarnEnabled() {        return category.isEnabledFor(Priority.WARN);    }}