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 * This class is used to store the parent page and the position in it during
25 * a browse operation. We have as many ParentPos instance than the depth of the tree.
26 *
27 * @param <K> The type for the Key
28 * @param <V> The type for the stored value
29 *
30 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
31 */
32 /* No qualifier*/class ParentPos<K, V>
33 {
34 /** The page we are browsing */
35 /* no qualifier */Page<K, V> page;
36
37 /** The current position in the page */
38 /* no qualifier */int pos;
39
40 /** The current position of the duplicate container in the page */
41 /* no qualifier */int dupPos;
42
43 /** The current position of the duplicate container in the page */
44 /* no qualifier */ValueCursor<V> valueCursor;
45
46
47 /**
48 * Creates a new instance of ParentPos
49 * @param page The current Page
50 * @param pos The current position in the page
51 */
52 /* no qualifier */ParentPos( Page<K, V> page, int pos )
53 {
54 this.page = page;
55 this.pos = pos;
56 }
57
58
59 /**
60 * @see Object#toString()
61 */
62 public String toString()
63 {
64 return "<" + pos + "," + page + ">";
65 }
66 }