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1
10
11 package com.triactive.jdo.store;
12
13 import java.math.BigInteger  ;
14
15
16 class CharacterLiteral extends CharacterExpression
17 {
18 private final String value;
19
20 public CharacterLiteral(QueryStatement qs, char value)
21 {
22 super(qs);
23
24 this.value = String.valueOf(value);
25 st.append('\'').append(value).append('\'');
26 }
27
28 public CharacterLiteral(QueryStatement qs, String value)
29 {
30 super(qs);
31
32 this.value = value;
33
34 DatabaseAdapter dba = qs.getStoreManager().getDatabaseAdapter();
35 st.appendParameter((ColumnMapping)dba.getMapping(String .class), value);
36 }
37
38 public BooleanExpression eq(SQLExpression expr)
39 {
40 if (expr instanceof CharacterLiteral)
41 return new BooleanLiteral(qs, value.equals(((CharacterLiteral)expr).value));
42 else
43 return super.eq(expr);
44 }
45
46 public BooleanExpression noteq(SQLExpression expr)
47 {
48 if (expr instanceof CharacterLiteral)
49 return new BooleanLiteral(qs, !value.equals(((CharacterLiteral)expr).value));
50 else
51 return super.noteq(expr);
52 }
53
54 public BooleanExpression lt(SQLExpression expr)
55 {
56 if (expr instanceof CharacterLiteral)
57 return new BooleanLiteral(qs, value.compareTo(((CharacterLiteral)expr).value) < 0);
58 else
59 return super.lt(expr);
60 }
61
62 public BooleanExpression lteq(SQLExpression expr)
63 {
64 if (expr instanceof CharacterLiteral)
65 return new BooleanLiteral(qs, value.compareTo(((CharacterLiteral)expr).value) <= 0);
66 else
67 return super.lteq(expr);
68 }
69
70 public BooleanExpression gt(SQLExpression expr)
71 {
72 if (expr instanceof CharacterLiteral)
73 return new BooleanLiteral(qs, value.compareTo(((CharacterLiteral)expr).value) > 0);
74 else
75 return super.gt(expr);
76 }
77
78 public BooleanExpression gteq(SQLExpression expr)
79 {
80 if (expr instanceof CharacterLiteral)
81 return new BooleanLiteral(qs, value.compareTo(((CharacterLiteral)expr).value) >= 0);
82 else
83 return super.gteq(expr);
84 }
85
86 public SQLExpression add(SQLExpression expr)
87 {
88 if (expr instanceof CharacterLiteral)
89 return new CharacterLiteral(qs, value.concat(((CharacterLiteral)expr).value));
90 else
91 return super.add(expr);
92 }
93
94 public BooleanExpression endsWithMethod(SQLExpression str)
95 {
96 if (str instanceof CharacterLiteral)
97 return new BooleanLiteral(qs, value.endsWith(((CharacterLiteral)str).value));
98 else
99 return super.endsWithMethod(str);
100 }
101
102 public NumericExpression indexOfMethod(SQLExpression str)
103 {
104 if (str instanceof CharacterLiteral)
105 return new IntegerLiteral(qs, BigInteger.valueOf((long)value.indexOf(((CharacterLiteral)str).value)));
106 else
107 return super.indexOfMethod(str);
108 }
109
110 public NumericExpression lengthMethod()
111 {
112 return new IntegerLiteral(qs, BigInteger.valueOf((long)value.length()));
113 }
114
115 public BooleanExpression startsWithMethod(SQLExpression str)
116 {
117 if (str instanceof CharacterLiteral)
118 return new BooleanLiteral(qs, value.startsWith(((CharacterLiteral)str).value));
119 else
120 return super.startsWithMethod(str);
121 }
122
123 public BooleanExpression startsWithMethod(SQLExpression str, SQLExpression toffset)
124 {
125 if (str instanceof CharacterLiteral && toffset instanceof IntegerLiteral)
126 return new BooleanLiteral(qs, value.startsWith(((CharacterLiteral)str).value,
127 ((IntegerLiteral)toffset).getValue().intValue()));
128 else
129 return super.startsWithMethod(str, toffset);
130 }
131
132 public CharacterExpression substringMethod(NumericExpression begin)
133 {
134 if (begin instanceof IntegerLiteral)
135 return new CharacterLiteral(qs, value.substring(((IntegerLiteral)begin).getValue().intValue()));
136 else
137 return super.substringMethod(begin);
138 }
139
140 public CharacterExpression substringMethod(NumericExpression begin, NumericExpression end)
141 {
142 if (begin instanceof IntegerLiteral && end instanceof IntegerLiteral)
143 return new CharacterLiteral(qs, value.substring(((IntegerLiteral)begin).getValue().intValue(),
144 ((IntegerLiteral)end ).getValue().intValue()));
145 else
146 return super.substringMethod(begin, end);
147 }
148
149 public CharacterExpression toLowerCase()
150 {
151 return new CharacterLiteral(qs, value.toLowerCase());
152 }
153
154 public CharacterExpression toUpperCase()
155 {
156 return new CharacterLiteral(qs, value.toUpperCase());
157 }
158
159 public CharacterExpression trim()
160 {
161 return new CharacterLiteral(qs, value.trim());
162 }
163 }
164 |
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