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 import org.apache.log4j.*; 20 21 /** 22 Listen to events occuring within a {@link 23 org.apache.log4j.Hierarchy Hierarchy}. 24 25 @author Ceki Gülcü 26 @since 1.2 27 28 */ 29 public interface HierarchyEventListener { 30 31 // public 32 // void categoryCreationEvent(Category cat); 33 34 public void addAppenderEvent(Category cat, Appender appender); 35 36 public void removeAppenderEvent(Category cat, Appender appender); 37 38 } 39
