/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements.  See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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.log4j.lf5;import org.apache.log4j.PropertyConfigurator;import org.apache.log4j.spi.Configurator;import org.apache.log4j.spi.LoggerRepository;import java.io.IOException;import java.net.URL;/** * The <code>DefaultLF5Configurator</code> provides a default * configuration for the <code>LF5Appender</code>. * * Note: The preferred method for configuring a <code>LF5Appender</code> * is to use the <code>LF5Manager</code> class. This class ensures * that configuration does not occur multiple times, and improves system * performance. Reconfiguring the monitor multiple times can result in * unexpected behavior. * * @author Brent Sprecher */// Contributed by ThoughtWorks Inc.public class DefaultLF5Configurator implements Configurator {  //--------------------------------------------------------------------------  // Constants:  //--------------------------------------------------------------------------  //--------------------------------------------------------------------------  // Protected Variables:  //--------------------------------------------------------------------------  //--------------------------------------------------------------------------  // Private Variables:  //--------------------------------------------------------------------------  //--------------------------------------------------------------------------  // Constructors:  //--------------------------------------------------------------------------  /**   * This class should never be instantiated! It implements the <code>   * Configurator</code>   * interface, but does not provide the same functionality as full   * configurator class.   */  private DefaultLF5Configurator() {  }  //--------------------------------------------------------------------------  // Public Methods:  //--------------------------------------------------------------------------  /**   * This method configures the <code>LF5Appender</code> using a   * default configuration file. The default configuration file is   * <bold>defaultconfig.properties</bold>.   * @throws java.io.IOException   */  public static void configure() throws IOException {    String resource =        "/org/apache/log4j/lf5/config/defaultconfig.properties";    URL configFileResource =        DefaultLF5Configurator.class.getResource(resource);    if (configFileResource != null) {      PropertyConfigurator.configure(configFileResource);    } else {      throw new IOException("Error: Unable to open the resource" +          resource);    }  }  /**   * This is a dummy method that will throw an   * <code>IllegalStateException</code> if used.   */  public void doConfigure(URL configURL, LoggerRepository repository) {    throw new IllegalStateException("This class should NOT be" +        " instantiated!");  }  //--------------------------------------------------------------------------  // Protected Methods:  //--------------------------------------------------------------------------  //--------------------------------------------------------------------------  // Private Methods:  //--------------------------------------------------------------------------  //--------------------------------------------------------------------------  // Nested Top-Level Classes or Interfaces:  //--------------------------------------------------------------------------}