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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  import java.util.List;
24  
25  import org.apache.directory.mavibot.btree.Tuple;
26  
27  
28  /**
29   * The result of a delete operation, when the child has not been merged. It contains the
30   * reference to the modified page, and the removed element.
31   * 
32   * @param <K> The type for the Key
33   * @param <V> The type for the stored value
34  
35   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
36   */
37  /* No qualifier */class BorrowedFromRightResult<K, V> extends AbstractBorrowedFromSiblingResult<K, V>
38  {
39      /**
40       * The default constructor for BorrowedFromRightResult.
41       * 
42       * @param modifiedPage The modified page
43       * @param modifiedSibling The modified sibling
44       * @param removedElement The removed element (can be null if the key wasn't present in the tree)
45       */
46      /* No qualifier */BorrowedFromRightResult( Page<K, V> modifiedPage, Page<K, V> modifiedSibling,
47          Tuple<K, V> removedElement )
48      {
49          super( modifiedPage, modifiedSibling, removedElement, AbstractBorrowedFromSiblingResult.SiblingPosition.RIGHT );
50      }
51  
52  
53      /**
54       * A constructor for BorrowedFromRightResult which takes a list of copied pages.
55       * 
56       * @param copiedPages the list of copied pages
57       * @param modifiedPage The modified page
58       * @param modifiedSibling The modified sibling
59       * @param removedElement The removed element (can be null if the key wasn't present in the tree)
60       */
61      /* No qualifier */BorrowedFromRightResult( List<Page<K, V>> copiedPages, Page<K, V> modifiedPage,
62          Page<K, V> modifiedSibling, Tuple<K, V> removedElement )
63      {
64          super( copiedPages, modifiedPage, modifiedSibling, removedElement,
65              AbstractBorrowedFromSiblingResult.SiblingPosition.RIGHT );
66      }
67  
68  
69      /**
70       * @see Object#toString()
71       */
72      public String toString()
73      {
74          StringBuilder sb = new StringBuilder();
75  
76          sb.append( "Borrowed from right" );
77          sb.append( super.toString() );
78  
79          return sb.toString();
80      }
81  }