1 /*
2 * Copyright 2007-2013 smartics, Kronseder & Reiner GmbH
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package de.smartics.exceptions.id;
17
18 import de.smartics.exceptions.core.ExceptionId;
19
20 /**
21 * An implementation where the exception identifier is modeled as a long value.
22 */
23 public class LongExceptionId implements ExceptionId<Long>
24 {
25 // ********************************* Fields *********************************
26
27 // --- constants ------------------------------------------------------------
28
29 /**
30 * The class version identifier.
31 */
32 private static final long serialVersionUID = 1L;
33
34 // --- members --------------------------------------------------------------
35
36 /**
37 * The implementing identifier.
38 *
39 * @serial
40 */
41 private final Long id;
42
43 // ****************************** Initializer *******************************
44
45 // ****************************** Constructors ******************************
46
47 /**
48 * Default constructor that creates the identifier instance.
49 *
50 * @param id the value of the unique identifier.
51 */
52 public LongExceptionId(final long id)
53 {
54 this.id = Long.valueOf(id);
55 }
56
57 // ****************************** Inner Classes *****************************
58
59 // ********************************* Methods ********************************
60
61 // --- init -----------------------------------------------------------------
62
63 // --- get&set --------------------------------------------------------------
64
65 @Override
66 public Long getId()
67 {
68 return id;
69 }
70
71 // --- business -------------------------------------------------------------
72
73 // --- object basics --------------------------------------------------------
74
75 /**
76 * Returns <code>true</code> if the given object is semantically equal to the
77 * given object, <code>false</code> otherwise.
78 * <p>
79 * Two instances o this class are equal if they have the same identifier.
80 * </p>
81 *
82 * @param object the instance to compare to.
83 * @return <code>true</code> if the given object is semantically equal to the
84 * given object, <code>false</code> otherwise.
85 */
86 @Override
87 public boolean equals(final Object object)
88 {
89 if (this == object)
90 {
91 return true;
92 }
93 else if (object == null || getClass() != object.getClass())
94 {
95 return false;
96 }
97
98 final LongExceptionId other = (LongExceptionId) object;
99
100 return id.equals(other.id);
101 }
102
103 /**
104 * Returns the hashcode of the object.
105 * <p>
106 * It is the hashcode of the UUID instance.
107 * </p>
108 *
109 * @return the hash code.
110 */
111 @Override
112 public int hashCode()
113 {
114 return id.hashCode();
115 }
116
117 /**
118 * Returns the UUID as a string.
119 *
120 * @return the UUID as a string.
121 */
122 @Override
123 public String toString()
124 {
125 return id.toString();
126 }
127 }