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14 package org.jacorb.trading.constraint;
15
16
17 public class StringValue implements Value
18 {
19 private String  m_value;
20
21
22 public StringValue()
23 {
24 this(null);
25 }
26
27
28 public StringValue(String value)
29 {
30 m_value = value;
31 }
32
33
34 public StringValue(Object value)
35 {
36 m_value = (String )value;
37 }
38
39
40 public void setValue(Object value)
41 {
42 m_value = (String )value;
43 }
44
45
46 public int getTypeId()
47 {
48 return ValueType.STRING;
49 }
50
51
52 public Object getValue()
53 {
54 return m_value;
55 }
56
57
58 public boolean equals(Value nv)
59 {
60 boolean result = false;
61
62 if (nv.getTypeId() == ValueType.STRING)
63 result = m_value.equals(nv.getValue());
64 else
65 throw new IllegalArgumentException ();
66
67 return result;
68 }
69
70
71 public boolean lessThan(Value nv)
72 {
73 boolean result = false;
74
75 if (nv.getTypeId() == ValueType.STRING) {
76 String s = (String )nv.getValue();
77 result = (m_value.compareTo(s) < 0);
78 }
79 else
80 throw new IllegalArgumentException ();
81
82 return result;
83 }
84
85
86 public boolean lessThanEqual(Value nv)
87 {
88 return (lessThan(nv) || equals(nv));
89 }
90
91
92 public boolean greaterThan(Value nv)
93 {
94 return (! lessThan(nv) && ! equals(nv));
95 }
96
97
98 public boolean greaterThanEqual(Value nv)
99 {
100 return (! lessThan(nv));
101 }
102
103
104 public Value plus(Value nv)
105 {
106 throw new ArithmeticException ();
107 }
108
109
110 public Value minus(Value nv)
111 {
112 throw new ArithmeticException ();
113 }
114
115
116 public Value multiply(Value nv)
117 {
118 throw new ArithmeticException ();
119 }
120
121
122 public Value divide(Value nv)
123 {
124 throw new ArithmeticException ();
125 }
126
127
128 public Value negate()
129 {
130 throw new ArithmeticException ();
131 }
132
133
134 public Value convert(int typeId)
135 {
136 Value result = null;
137
138 if (typeId == ValueType.STRING)
139 result = new StringValue(m_value);
140 else
141 throw new IllegalArgumentException ();
142
143 return result;
144 }
145
146
147 public String toString()
148 {
149 return m_value;
150 }
151 }
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