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 package org.apache.log4j.spi; 18 19 20 import org.apache.log4j.spi.LoggerRepository; 21 import java.net.URL; 22 23 /** 24 Implemented by classes capable of configuring log4j using a URL. 25 26 @since 1.0 27 @author Anders Kristensen 28 */ 29 public interface Configurator { 30 31 /** 32 Special level value signifying inherited behaviour. The current 33 value of this string constant is <b>inherited</b>. {@link #NULL} 34 is a synonym. */ 35 public static final String INHERITED = "inherited"; 36 37 /** 38 Special level signifying inherited behaviour, same as {@link 39 #INHERITED}. The current value of this string constant is 40 <b>null</b>. */ 41 public static final String NULL = "null"; 42 43 44 45 /** 46 Interpret a resource pointed by a URL and set up log4j accordingly. 47 48 The configuration is done relative to the <code>hierarchy</code> 49 parameter. 50 51 @param url The URL to parse 52 @param repository The hierarchy to operation upon. 53 */ 54 void doConfigure(URL url, LoggerRepository repository); 55 }