1 2 /* 3 * ==================================================================== 4 * The Apache Software License, Version 1.1 5 * 6 * Copyright (c) 2002 The Apache Software Foundation. All rights 7 * reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. The end-user documentation included with the redistribution, 22 * if any, must include the following acknowledgment: 23 * "This product includes software developed by the 24 * Apache Software Foundation (http://www.apache.org/)." 25 * Alternately, this acknowledgment may appear in the software itself, 26 * if and wherever such third-party acknowledgments normally appear. 27 * 28 * 4. The names "Apache" and "Apache Software Foundation" and 29 * "Apache POI" must not be used to endorse or promote products 30 * derived from this software without prior written permission. For 31 * written permission, please contact apache@apache.org. 32 * 33 * 5. Products derived from this software may not be called "Apache", 34 * "Apache POI", nor may "Apache" appear in their name, without 35 * prior written permission of the Apache Software Foundation. 36 * 37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 40 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 43 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 44 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 45 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 46 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 47 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 48 * SUCH DAMAGE. 49 * ==================================================================== 50 * 51 * This software consists of voluntary contributions made by many 52 * individuals on behalf of the Apache Software Foundation. For more 53 * information on the Apache Software Foundation, please see 54 * <http://www.apache.org/>. 55 */ 56 package org.apache.poi.util; 57 58 import org.apache.commons.logging.Log; 59 import org.apache.commons.logging.LogFactory; 60 61 import java.util.*; 62 63 /** 64 * A logger class that strives to make it as easy as possible for 65 * developers to write log calls, while simultaneously making those 66 * calls as cheap as possible by performing lazy evaluation of the log 67 * message.<p> 68 * 69 * @author Marc Johnson (mjohnson at apache dot org) 70 * @author Glen Stampoultzis (glens at apache.org) 71 * @author Nicola Ken Barozzi (nicolaken at apache.org) 72 */ 73 74 public class CommonsLogger extends POILogger 75 { 76 77 private static LogFactory _creator = LogFactory.getFactory(); 78 private Log log = null; 79 80 81 public void initialize(final String cat) 82 { 83 this.log = _creator.getInstance(cat); 84 } 85 86 /** 87 * Log a message 88 * 89 * @param level One of DEBUG, INFO, WARN, ERROR, FATAL 90 * @param obj1 The object to log. 91 */ 92 93 public void log(final int level, final Object obj1) 94 { 95 if(level==FATAL) 96 { 97 if(log.isFatalEnabled()) 98 { 99 log.fatal(obj1); 100 } 101 } 102 else if(level==ERROR) 103 { 104 if(log.isErrorEnabled()) 105 { 106 log.error(obj1); 107 } 108 } 109 else if(level==WARN) 110 { 111 if(log.isWarnEnabled()) 112 { 113 log.warn(obj1); 114 } 115 } 116 else if(level==INFO) 117 { 118 if(log.isInfoEnabled()) 119 { 120 log.info(obj1); 121 } 122 } 123 else if(level==DEBUG) 124 { 125 if(log.isDebugEnabled()) 126 { 127 log.debug(obj1); 128 } 129 } 130 else 131 { 132 if(log.isTraceEnabled()) 133 { 134 log.trace(obj1); 135 } 136 } 137 138 } 139 140 /** 141 * Check if a logger is enabled to log at the specified level 142 * 143 * @param level One of DEBUG, INFO, WARN, ERROR, FATAL 144 * @param obj1 The logger to check. 145 */ 146 147 public boolean check(final int level) 148 { 149 if(level==FATAL) 150 { 151 if(log.isFatalEnabled()) 152 { 153 return true; 154 } 155 } 156 else if(level==ERROR) 157 { 158 if(log.isErrorEnabled()) 159 { 160 return true; 161 } 162 } 163 else if(level==WARN) 164 { 165 if(log.isWarnEnabled()) 166 { 167 return true; 168 } 169 } 170 else if(level==INFO) 171 { 172 if(log.isInfoEnabled()) 173 { 174 return true; 175 } 176 } 177 else if(level==DEBUG) 178 { 179 if(log.isDebugEnabled()) 180 { 181 return true; 182 } 183 } 184 185 return false; 186 187 } 188 189 190 } // end package scope class POILogger 191 192