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.server.core.splay;
21
22
23 /**
24 * A linked binary tree node.
25 *
26 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
27 * @version $Rev$, $Date$
28 */
29 public class LinkedBinaryNode<T>
30 {
31 T key; // The data in the node
32 LinkedBinaryNode<T> left; // Left child
33 LinkedBinaryNode<T> right; // Right child
34 LinkedBinaryNode<T> next;
35 LinkedBinaryNode<T> previous;
36
37 transient int depth;
38
39 LinkedBinaryNode( T theKey )
40 {
41 key = theKey;
42 left = right = null;
43 }
44
45
46 public LinkedBinaryNode<T> getLeft() {
47 return left;
48 }
49
50
51 public LinkedBinaryNode<T> getRight() {
52 return right;
53 }
54
55 public T getKey() {
56 return key;
57 }
58
59 public boolean isLeaf()
60 {
61 return ( right == null && left == null );
62 }
63
64 /**
65 * This method is used for internal purpose only while pretty printing the tree.<br>
66 * @return the depth at the this node
67 */
68 public int getDepth() {
69 return depth;
70 }
71
72 /**
73 * This method is used for internal purpose only while pretty printing the tree.<br>
74 * @param depth value representing the depth of the this node
75 */
76 public void setDepth( int depth ) {
77 this.depth = depth;
78 }
79
80 @Override
81 public String toString() {
82 return "[" + key + "]";
83 }
84
85
86 }