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 }