1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
|
/*
* Copyright (C) 2001-2013 Michael Fuchs
*
* This file is part of herold.
*
* herold is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* herold is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with herold. If not, see <http://www.gnu.org/licenses/>.
*/
package org.dbdoclet;
/**
* Die Klasse Identifier realisiert einen Identifikator. Der Zweck dieser Klasse
* ist es Variablen, die einen Identifikator repräsentieren auch als solche
* kenntlich zu machen und von Zeichenketten abzugrenzen. Dies führt .z.B. zur
* mehr Klarheit bei den Methiodenaufrufen.
*
* @author michael
*/
public class Identifier {
private final String value;
public Identifier(String value) {
if (value == null) {
throw new IllegalArgumentException(
"Argument value must not be null!");
}
this.value = value;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
Identifier other = (Identifier) obj;
if (value == null && other.value != null) {
return false;
}
if (value != null && other.value == null) {
return false;
}
if (value.equals(other.value) == false) {
return false;
}
return true;
}
/**
* Liefert den aktuellen Wert des Identifikators.
*
* @return String
*/
public String getValue() {
return value;
}
@Override
public int hashCode() {
return value.hashCode();
}
/**
* Liefert die Länge des Identifikators.
*
* @return int
*/
public int length() {
return value.length();
}
@Override
public String toString() {
return value;
}
}
|
