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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;
21  
22  
23  /**
24   * A Page holder. It stores the page and provide a way to access it.
25   * 
26   * @param <K> The type of the BTree key
27   * @param <V> The type of the BTree value
28   *
29   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
30   */
31  /* No qualifier*/class PageHolder<K, V>
32  {
33      /** The BTree */
34      protected BTree<K, V> btree;
35  
36      /** The stored page */
37      private Page<K, V> page;
38  
39  
40      /**
41       * Create a new holder storing an offset and a SoftReference containing the element.
42       * 
43       * @param btree The associated BTree
44       * @param page The element to store into a SoftReference
45       **/
46      /* no qualifier */PageHolder( BTree<K, V> btree, Page<K, V> page )
47      {
48          this.btree = btree;
49          this.page = page;
50      }
51  
52  
53      /**
54       * @return the stored page
55       */
56      /* no qualifier */Page<K, V> getValue()
57      {
58          return page;
59      }
60  }