1 package org.apache.commons.graph.model;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import static java.lang.String.format;
23
24 import org.apache.commons.graph.LabeledVertex;
25
26 public class BaseLabeledVertex
27 implements LabeledVertex
28 {
29
30 private final String label;
31
32 public BaseLabeledVertex( String label )
33 {
34 this.label = label;
35 }
36
37 /**
38 * {@inheritDoc}
39 */
40 public final String getLabel()
41 {
42 return label;
43 }
44
45 /**
46 * {@inheritDoc}
47 */
48 @Override
49 public int hashCode()
50 {
51 final int prime = 31;
52 int result = 1;
53 result = prime * result + ( ( label == null ) ? 0 : label.hashCode() );
54 return result;
55 }
56
57 /**
58 * {@inheritDoc}
59 */
60 @Override
61 public boolean equals( Object obj )
62 {
63 if ( this == obj )
64 {
65 return true;
66 }
67
68 if ( obj == null )
69 {
70 return false;
71 }
72
73 if ( getClass() != obj.getClass() )
74 {
75 return false;
76 }
77
78 BaseLabeledVertex other = (BaseLabeledVertex) obj;
79 if ( label == null )
80 {
81 if ( other.getLabel() != null )
82 {
83 return false;
84 }
85 }
86 else if ( !label.equals( other.getLabel() ) )
87 {
88 return false;
89 }
90
91 return true;
92 }
93
94 /**
95 * {@inheritDoc}
96 */
97 @Override
98 public String toString()
99 {
100 return format( "{ %s }", label );
101 }
102
103 }