1 /* 2 * Copyright 2001-2004 The Apache Software Foundation. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 18 package org.apache.commons.logging.impl; 19 20 21 import java.io.Serializable; 22 import org.apache.commons.logging.Log; 23 24 25 /** 26 * <p>Trivial implementation of Log that throws away all messages. No 27 * configurable system properties are supported.</p> 28 * 29 * @author <a href="mailto:sanders@apache.org">Scott Sanders</a> 30 * @author Rod Waldhoff 31 * @version $Id: NoOpLog.java 155426 2005-02-26 13:10:49Z dirkv $ 32 */ 33 public class NoOpLog implements Log, Serializable { 34 35 /** Convenience constructor */ NoOpLog()36 public NoOpLog() { } 37 /** Base constructor */ NoOpLog(String name)38 public NoOpLog(String name) { } 39 /** Do nothing */ trace(Object message)40 public void trace(Object message) { } 41 /** Do nothing */ trace(Object message, Throwable t)42 public void trace(Object message, Throwable t) { } 43 /** Do nothing */ debug(Object message)44 public void debug(Object message) { } 45 /** Do nothing */ debug(Object message, Throwable t)46 public void debug(Object message, Throwable t) { } 47 /** Do nothing */ info(Object message)48 public void info(Object message) { } 49 /** Do nothing */ info(Object message, Throwable t)50 public void info(Object message, Throwable t) { } 51 /** Do nothing */ warn(Object message)52 public void warn(Object message) { } 53 /** Do nothing */ warn(Object message, Throwable t)54 public void warn(Object message, Throwable t) { } 55 /** Do nothing */ error(Object message)56 public void error(Object message) { } 57 /** Do nothing */ error(Object message, Throwable t)58 public void error(Object message, Throwable t) { } 59 /** Do nothing */ fatal(Object message)60 public void fatal(Object message) { } 61 /** Do nothing */ fatal(Object message, Throwable t)62 public void fatal(Object message, Throwable t) { } 63 64 /** 65 * Debug is never enabled. 66 * 67 * @return false 68 */ isDebugEnabled()69 public final boolean isDebugEnabled() { return false; } 70 71 /** 72 * Error is never enabled. 73 * 74 * @return false 75 */ isErrorEnabled()76 public final boolean isErrorEnabled() { return false; } 77 78 /** 79 * Fatal is never enabled. 80 * 81 * @return false 82 */ isFatalEnabled()83 public final boolean isFatalEnabled() { return false; } 84 85 /** 86 * Info is never enabled. 87 * 88 * @return false 89 */ isInfoEnabled()90 public final boolean isInfoEnabled() { return false; } 91 92 /** 93 * Trace is never enabled. 94 * 95 * @return false 96 */ isTraceEnabled()97 public final boolean isTraceEnabled() { return false; } 98 99 /** 100 * Warn is never enabled. 101 * 102 * @return false 103 */ isWarnEnabled()104 public final boolean isWarnEnabled() { return false; } 105 106 } 107