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
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#pragma once
#include <file/fcode.hxx>
namespace connectivity::file
{
/** UCASE(str)
UPPER(str)
Returns the string str with all characters changed to uppercase according to the current character set mapping (the default is ISO-8859-1 Latin1):
> SELECT UCASE('Hej');
-> 'HEJ'
*/
class OOp_Upper : public OUnaryOperator
{
protected:
virtual ORowSetValue operate(const ORowSetValue& lhs) const override;
};
/** LCASE(str)
LOWER(str)
Returns the string str with all characters changed to lowercase according to the current character set mapping (the default is ISO-8859-1 Latin1):
> SELECT LCASE('QUADRATICALLY');
-> 'quadratically'
*/
class OOp_Lower : public OUnaryOperator
{
protected:
virtual ORowSetValue operate(const ORowSetValue& lhs) const override;
};
/** ASCII(str)
Returns the ASCII code value of the leftmost character of the string str. Returns 0 if str is the empty string. Returns NULL if str is NULL:
> SELECT ASCII('2');
-> 50
> SELECT ASCII(2);
-> 50
> SELECT ASCII('dx');
-> 100
*/
class OOp_Ascii : public OUnaryOperator
{
protected:
virtual ORowSetValue operate(const ORowSetValue& lhs) const override;
};
/** LENGTH(str)
OCTET_LENGTH(str)
CHAR_LENGTH(str)
CHARACTER_LENGTH(str)
Returns the length of the string str:
> SELECT LENGTH('text');
-> 4
> SELECT OCTET_LENGTH('text');
-> 4
*/
class OOp_CharLength : public OUnaryOperator
{
protected:
virtual ORowSetValue operate(const ORowSetValue& lhs) const override;
};
/** CHAR(N,...)
CHAR() interprets the arguments as integers and returns a string consisting of the characters given by the ASCII code values of those integers. NULL values are skipped:
> SELECT CHAR(ascii('t'),ascii('e'),ascii('s'),ascii('t'));
-> 'test'
> SELECT CHAR(77,77.3,'77.3');
-> 'MMM'
*/
class OOp_Char : public ONthOperator
{
protected:
virtual ORowSetValue operate(const std::vector<ORowSetValue>& lhs) const override;
};
/** CONCAT(str1,str2,...)
Returns the string that results from concatenating the arguments. Returns NULL if any argument is NULL. May have more than 2 arguments. A numeric argument is converted to the equivalent string form:
> SELECT CONCAT('OO', 'o', 'OO');
-> 'OOoOO'
> SELECT CONCAT('OO', NULL, 'OO');
-> NULL
> SELECT CONCAT(14.3);
-> '14.3'
*/
class OOp_Concat : public ONthOperator
{
protected:
virtual ORowSetValue operate(const std::vector<ORowSetValue>& lhs) const override;
};
/** LOCATE(substr,str)
POSITION(substr IN str)
Returns the position of the first occurrence of substring substr in string str. Returns 0 if substr is not in str:
> SELECT LOCATE('bar', 'foobarbar');
-> 4
> SELECT LOCATE('xbar', 'foobar');
-> 0
LOCATE(substr,str,pos)
Returns the position of the first occurrence of substring substr in string str, starting at position pos. Returns 0 if substr is not in str:
> SELECT LOCATE('bar', 'foobarbar',5);
-> 7
*/
class OOp_Locate : public ONthOperator
{
protected:
virtual ORowSetValue operate(const std::vector<ORowSetValue>& lhs) const override;
};
/** SUBSTRING(str,pos)
SUBSTRING(str FROM pos)
Returns a substring from string str starting at position pos:
> SELECT SUBSTRING('Quadratically',5);
-> 'ratically'
> SELECT SUBSTRING('foobarbar' FROM 4);
-> 'barbar'
SUBSTRING(str,pos,len)
SUBSTRING(str FROM pos FOR len)
Returns a substring len characters long from string str, starting at position pos. The variant form that uses FROM is SQL-92 syntax:
> SELECT SUBSTRING('Quadratically',5,6);
-> 'ratica'
*/
class OOp_SubString : public ONthOperator
{
protected:
virtual ORowSetValue operate(const std::vector<ORowSetValue>& lhs) const override;
};
/** LTRIM(str)
Returns the string str with leading space characters removed:
> SELECT LTRIM(' barbar');
-> 'barbar'
*/
class OOp_LTrim : public OUnaryOperator
{
protected:
virtual ORowSetValue operate(const ORowSetValue& lhs) const override;
};
/** RTRIM(str)
Returns the string str with trailing space characters removed:
> SELECT RTRIM('barbar ');
-> 'barbar'
*/
class OOp_RTrim : public OUnaryOperator
{
protected:
virtual ORowSetValue operate(const ORowSetValue& lhs) const override;
};
/** SPACE(N)
Returns a string consisting of N space characters:
> SELECT SPACE(6);
-> ' '
*/
class OOp_Space : public OUnaryOperator
{
protected:
virtual ORowSetValue operate(const ORowSetValue& lhs) const override;
};
/** REPLACE(str,from_str,to_str)
Returns the string str with all occurrences of the string from_str replaced by the string to_str:
> SELECT REPLACE('www.OOo.com', 'w', 'Ww');
-> 'WwWwWw.OOo.com'
*/
class OOp_Replace : public ONthOperator
{
protected:
virtual ORowSetValue operate(const std::vector<ORowSetValue>& lhs) const override;
};
/** REPEAT(str,count)
Returns a string consisting of the string str repeated count times. If count <= 0, returns an empty string. Returns NULL if str or count are NULL:
> SELECT REPEAT('OOo', 3);
-> 'OOoOOoOOo'
*/
class OOp_Repeat : public OBinaryOperator
{
protected:
virtual ORowSetValue operate(const ORowSetValue& lhs,const ORowSetValue& rhs) const override;
};
/** INSERT(str,pos,len,newstr)
Returns the string str, with the substring beginning at position pos and len characters long replaced by the string newstr:
> SELECT INSERT('Quadratic', 3, 4, 'What');
-> 'QuWhattic'
*/
class OOp_Insert : public ONthOperator
{
protected:
virtual ORowSetValue operate(const std::vector<ORowSetValue>& lhs) const override;
};
/** LEFT(str,len)
Returns the leftmost len characters from the string str:
> SELECT LEFT('foobarbar', 5);
-> 'fooba'
*/
class OOp_Left : public OBinaryOperator
{
protected:
virtual ORowSetValue operate(const ORowSetValue& lhs,const ORowSetValue& rhs) const override;
};
/** RIGHT(str,len)
Returns the rightmost len characters from the string str:
> SELECT RIGHT('foobarbar', 4);
-> 'rbar'
*/
class OOp_Right : public OBinaryOperator
{
protected:
virtual ORowSetValue operate(const ORowSetValue& lhs,const ORowSetValue& rhs) const override;
};
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
