1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package org.apache.log4j.spi; 19 20 import org.apache.log4j.Appender; 21 import java.util.Enumeration; 22 23 /** 24 Interface for attaching appenders to objects. 25 26 @author Ceki Gülcü 27 @since 0.9.1 */ 28 public interface AppenderAttachable { 29 30 /** 31 Add an appender. 32 */ 33 public 34 void addAppender(Appender newAppender); 35 36 /** 37 Get all previously added appenders as an Enumeration. */ 38 public 39 Enumeration getAllAppenders(); 40 41 /** 42 Get an appender by name. 43 */ 44 public 45 Appender getAppender(String name); 46 47 48 /** 49 Returns <code>true</code> if the specified appender is in list of 50 attached attached, <code>false</code> otherwise. 51 52 @since 1.2 */ 53 public 54 boolean isAttached(Appender appender); 55 56 /** 57 Remove all previously added appenders. 58 */ 59 void removeAllAppenders(); 60 61 62 /** 63 Remove the appender passed as parameter from the list of appenders. 64 */ 65 void removeAppender(Appender appender); 66 67 68 /** 69 Remove the appender with the name passed as parameter from the 70 list of appenders. 71 */ 72 void 73 removeAppender(String name); 74 } 75