1/**
2 * Copyright (C) 2010 the original author or authors.
3 * See the notice.md file distributed with this work for additional
4 * information regarding copyright ownership.
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 *     http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19package com.beust.jcommander;
20
21import java.lang.annotation.Retention;
22import java.lang.annotation.Target;
23
24import static java.lang.annotation.ElementType.FIELD;
25
26/**
27 * <p>When applied to a field all of its child fields annotated
28 * with {@link Parameter} will be included during arguments
29 * parsing.</p>
30 *
31 * <p>Mainly useful when creating complex command based CLI interfaces,
32 * where several commands can share a set of arguments, but using
33 * object inheritance is not enough, due to no-multiple-inheritance
34 * restriction. Using {@link ParametersDelegate} any number of
35 * command sets can be shared by using composition pattern.</p>
36 *
37 * <p>Delegations can be chained (nested).</p>
38 *
39 * @author rodionmoiseev
40 */
41@Retention(java.lang.annotation.RetentionPolicy.RUNTIME)
42@Target({ FIELD })
43public @interface ParametersDelegate {
44}
45