Java tutorial
package org.codehaus.mojo.unix.maven.logging; /* * The MIT License * * Copyright 2009 The Codehaus. * * Permission is hereby granted, free of charge, to any person obtaining a copy of * this software and associated documentation files (the "Software"), to deal in * the Software without restriction, including without limitation the rights to * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies * of the Software, and to permit persons to whom the Software is furnished to do * so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ import org.apache.commons.logging.*; import org.apache.commons.logging.impl.*; public class MavenCommonLoggingLogFactory extends org.apache.commons.logging.LogFactory { private static final ThreadLocal<org.apache.maven.plugin.logging.Log> mavenLogger = new ThreadLocal<org.apache.maven.plugin.logging.Log>(); public Object getAttribute(String s) { return null; } public String[] getAttributeNames() { return null; } public Log getInstance(Class aClass) throws LogConfigurationException { org.apache.maven.plugin.logging.Log log = mavenLogger.get(); if (log == null) { return new NoOpLog(); // This *should* only happen during testing -- famous last words - trygvis // throw new RuntimeException( "INTERNAL ERROR: maven logger is null." ); } return new CommonsLogAdapter(log); } public Log getInstance(String s) throws LogConfigurationException { throw new RuntimeException("Not implemented"); } public void release() { } public void removeAttribute(String s) { } public void setAttribute(String s, Object o) { } public static void setMavenLogger(org.apache.maven.plugin.logging.Log mavenLogger) { MavenCommonLoggingLogFactory.mavenLogger.set(mavenLogger); } }