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1   /*
2    *   Licensed to the Apache Software Foundation (ASF) under one
3    *   or more contributor license agreements.  See the NOTICE file
4    *   distributed with this work for additional information
5    *   regarding copyright ownership.  The ASF licenses this file
6    *   to you under the Apache License, Version 2.0 (the
7    *   "License"); you may not use this file except in compliance
8    *   with the License.  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,
13   *   software distributed under the License is distributed on an
14   *   "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   *   KIND, either express or implied.  See the License for the
16   *   specific language governing permissions and limitations
17   *   under the License.
18   *
19   */
20  package org.apache.directory.mavibot.btree.memory;
21  
22  
23  /**
24   * A class to hold a single value or multiple values (in a sub-tree) of a key.
25   *
26   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
27   */
28  public class DuplicateKeyVal<V>
29  {
30      private V singleValue;
31  
32      private BTree<V, V> subTree;
33  
34  
35      /** No Qualifier */
36      DuplicateKeyVal( V singleValue )
37      {
38          this.singleValue = singleValue;
39      }
40  
41  
42      /** No Qualifier */
43      DuplicateKeyVal( BTree<V, V> subTree )
44      {
45          this.subTree = subTree;
46      }
47  
48  
49      public boolean isSingleValue()
50      {
51          return ( singleValue != null );
52      }
53  
54  
55      /**
56       * @return the singleValue
57       */
58      public V getSingleValue()
59      {
60          return singleValue;
61      }
62  
63  
64      /**
65       * @return the subTree
66       */
67      public BTree<V, V> getSubTree()
68      {
69          return subTree;
70      }
71  
72  }