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
21 /**
22 A string based interface to configure package components.
23
24 @author Ceki Gülcü
25 @author Anders Kristensen
26 @since 0.8.1
27 */
28 public interface OptionHandler {
29
30 /**
31 Activate the options that were previously set with calls to option
32 setters.
33
34 <p>This allows to defer activiation of the options until all
35 options have been set. This is required for components which have
36 related options that remain ambigous until all are set.
37
38 <p>For example, the FileAppender has the {@link
39 org.apache.log4j.FileAppender#setFile File} and {@link
40 org.apache.log4j.FileAppender#setAppend Append} options both of
41 which are ambigous until the other is also set. */
42 void activateOptions();
43
44 /**
45 Return list of strings that the OptionHandler instance recognizes.
46
47 @deprecated We now use JavaBeans style getters/setters.
48 */
49 // String[] getOptionStrings();
50
51 /**
52 Set <code>option</code> to <code>value</code>.
53
54 <p>The handling of each option depends on the OptionHandler
55 instance. Some options may become active immediately whereas
56 other may be activated only when {@link #activateOptions} is
57 called.
58
59 @deprecated We now use JavaBeans style getters/setters.
60 */
61 //void setOption(String option, String value);
62 }