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1   package org.apache.maven.plugin.descriptor;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *  http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  /**
23   * Describes a component requirement.
24   *
25   * @author <a href="mailto:brett@apache.org">Brett Porter</a>
26   */
27  public class Requirement
28      implements Cloneable
29  {
30      private final String role;
31  
32      private final String roleHint;
33  
34      public Requirement( String role )
35      {
36          this.role = role;
37          this.roleHint = null;
38      }
39  
40      public Requirement( String role, String roleHint )
41      {
42          this.role = role;
43          this.roleHint = roleHint;
44      }
45  
46      public String getRole()
47      {
48          return role;
49      }
50  
51      public String getRoleHint()
52      {
53          return roleHint;
54      }
55  
56      /**
57       * Creates a shallow copy of this requirement.
58       */
59      @Override
60      public Requirement clone()
61      {
62          try
63          {
64              return (Requirement) super.clone();
65          }
66          catch ( CloneNotSupportedException e )
67          {
68              throw new UnsupportedOperationException( e );
69          }
70      }
71  
72  }