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
32 //public
33 //void categoryCreationEvent(Category cat);
34
35
36 public
37 void addAppenderEvent(Category cat, Appender appender);
38
39 public
40 void removeAppenderEvent(Category cat, Appender appender);
41
42
43 }