1 /*
2 * Copyright 2007-2011 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 * @author <a href="mailto:robert.reiner@smartics.de">Robert Reiner</a>
24 * @version $Revision$
25 */
26 public class LongExceptionId implements ExceptionId<Long>
27 {
28 // ********************************* Fields *********************************
29
30 // --- constants ------------------------------------------------------------
31
32 /**
33 * The class version identifier.
34 */
35 private static final long serialVersionUID = 1L;
36
37 // --- members --------------------------------------------------------------
38
39 /**
40 * The implementing identifier.
41 *
42 * @serial
43 */
44 private final Long id;
45
46 // ****************************** Initializer *******************************
47
48 // ****************************** Constructors ******************************
49
50 /**
51 * Default constructor that creates the identifier instance.
52 *
53 * @param id the value of the unique identifier.
54 */
55 public LongExceptionId(final long id)
56 {
57 this.id = Long.valueOf(id);
58 }
59
60 // ****************************** Inner Classes *****************************
61
62 // ********************************* Methods ********************************
63
64 // --- init -----------------------------------------------------------------
65
66 // --- get&set --------------------------------------------------------------
67
68 /**
69 * {@inheritDoc}
70 *
71 * @see de.smartics.exceptions.core.ExceptionId#getId()
72 */
73 public Long getId()
74 {
75 return id;
76 }
77
78 // --- business -------------------------------------------------------------
79
80 // --- object basics --------------------------------------------------------
81
82 /**
83 * Returns <code>true</code> if the given object is semantically equal to the
84 * given object, <code>false</code> otherwise.
85 * <p>
86 * Two instances o this class are equal if they have the same identifier.
87 *
88 * @param object the instance to compare to.
89 * @return <code>true</code> if the given object is semantically equal to the
90 * given object, <code>false</code> otherwise.
91 */
92 public boolean equals(final Object object)
93 {
94 if (this == object)
95 {
96 return true;
97 }
98 else if (object == null || getClass() != object.getClass())
99 {
100 return false;
101 }
102
103 final LongExceptionId other = (LongExceptionId) object;
104
105 return id.equals(other.id);
106 }
107
108 /**
109 * Returns the hashcode of the object.
110 * <p>
111 * It is the hashcode of the UUID instance.
112 *
113 * @return the hash code.
114 */
115 public int hashCode()
116 {
117 return id.hashCode();
118 }
119
120 /**
121 * Returns the UUID as a string.
122 *
123 * @return the UUID as a string.
124 * @see java.lang.Object#toString()
125 */
126 @Override
127 public String toString()
128 {
129 return id.toString();
130 }
131 }