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
use crate::{ffi, Connection};
use std::os::raw::c_int;
#[repr(i32)]
#[non_exhaustive]
#[allow(clippy::upper_case_acronyms, non_camel_case_types)]
#[cfg_attr(docsrs, doc(cfg(feature = "limits")))]
pub enum Limit {
SQLITE_LIMIT_LENGTH = ffi::SQLITE_LIMIT_LENGTH,
SQLITE_LIMIT_SQL_LENGTH = ffi::SQLITE_LIMIT_SQL_LENGTH,
SQLITE_LIMIT_COLUMN = ffi::SQLITE_LIMIT_COLUMN,
SQLITE_LIMIT_EXPR_DEPTH = ffi::SQLITE_LIMIT_EXPR_DEPTH,
SQLITE_LIMIT_COMPOUND_SELECT = ffi::SQLITE_LIMIT_COMPOUND_SELECT,
SQLITE_LIMIT_VDBE_OP = ffi::SQLITE_LIMIT_VDBE_OP,
SQLITE_LIMIT_FUNCTION_ARG = ffi::SQLITE_LIMIT_FUNCTION_ARG,
SQLITE_LIMIT_ATTACHED = ffi::SQLITE_LIMIT_ATTACHED,
SQLITE_LIMIT_LIKE_PATTERN_LENGTH = ffi::SQLITE_LIMIT_LIKE_PATTERN_LENGTH,
SQLITE_LIMIT_VARIABLE_NUMBER = ffi::SQLITE_LIMIT_VARIABLE_NUMBER,
SQLITE_LIMIT_TRIGGER_DEPTH = 10,
SQLITE_LIMIT_WORKER_THREADS = 11,
}
impl Connection {
#[inline]
#[cfg_attr(docsrs, doc(cfg(feature = "limits")))]
pub fn limit(&self, limit: Limit) -> i32 {
let c = self.db.borrow();
unsafe { ffi::sqlite3_limit(c.db(), limit as c_int, -1) }
}
#[inline]
#[cfg_attr(docsrs, doc(cfg(feature = "limits")))]
pub fn set_limit(&self, limit: Limit, new_val: i32) -> i32 {
let c = self.db.borrow_mut();
unsafe { ffi::sqlite3_limit(c.db(), limit as c_int, new_val) }
}
}
#[cfg(test)]
mod test {
use super::*;
use crate::{Connection, Result};
#[test]
fn test_limit_values() {
assert_eq!(
Limit::SQLITE_LIMIT_LENGTH as i32,
ffi::SQLITE_LIMIT_LENGTH as i32,
);
assert_eq!(
Limit::SQLITE_LIMIT_SQL_LENGTH as i32,
ffi::SQLITE_LIMIT_SQL_LENGTH as i32,
);
assert_eq!(
Limit::SQLITE_LIMIT_COLUMN as i32,
ffi::SQLITE_LIMIT_COLUMN as i32,
);
assert_eq!(
Limit::SQLITE_LIMIT_EXPR_DEPTH as i32,
ffi::SQLITE_LIMIT_EXPR_DEPTH as i32,
);
assert_eq!(
Limit::SQLITE_LIMIT_COMPOUND_SELECT as i32,
ffi::SQLITE_LIMIT_COMPOUND_SELECT as i32,
);
assert_eq!(
Limit::SQLITE_LIMIT_VDBE_OP as i32,
ffi::SQLITE_LIMIT_VDBE_OP as i32,
);
assert_eq!(
Limit::SQLITE_LIMIT_FUNCTION_ARG as i32,
ffi::SQLITE_LIMIT_FUNCTION_ARG as i32,
);
assert_eq!(
Limit::SQLITE_LIMIT_ATTACHED as i32,
ffi::SQLITE_LIMIT_ATTACHED as i32,
);
assert_eq!(
Limit::SQLITE_LIMIT_LIKE_PATTERN_LENGTH as i32,
ffi::SQLITE_LIMIT_LIKE_PATTERN_LENGTH as i32,
);
assert_eq!(
Limit::SQLITE_LIMIT_VARIABLE_NUMBER as i32,
ffi::SQLITE_LIMIT_VARIABLE_NUMBER as i32,
);
#[cfg(feature = "bundled")]
assert_eq!(
Limit::SQLITE_LIMIT_TRIGGER_DEPTH as i32,
ffi::SQLITE_LIMIT_TRIGGER_DEPTH as i32,
);
#[cfg(feature = "bundled")]
assert_eq!(
Limit::SQLITE_LIMIT_WORKER_THREADS as i32,
ffi::SQLITE_LIMIT_WORKER_THREADS as i32,
);
}
#[test]
fn test_limit() -> Result<()> {
let db = Connection::open_in_memory()?;
db.set_limit(Limit::SQLITE_LIMIT_LENGTH, 1024);
assert_eq!(1024, db.limit(Limit::SQLITE_LIMIT_LENGTH));
db.set_limit(Limit::SQLITE_LIMIT_SQL_LENGTH, 1024);
assert_eq!(1024, db.limit(Limit::SQLITE_LIMIT_SQL_LENGTH));
db.set_limit(Limit::SQLITE_LIMIT_COLUMN, 64);
assert_eq!(64, db.limit(Limit::SQLITE_LIMIT_COLUMN));
db.set_limit(Limit::SQLITE_LIMIT_EXPR_DEPTH, 256);
assert_eq!(256, db.limit(Limit::SQLITE_LIMIT_EXPR_DEPTH));
db.set_limit(Limit::SQLITE_LIMIT_COMPOUND_SELECT, 32);
assert_eq!(32, db.limit(Limit::SQLITE_LIMIT_COMPOUND_SELECT));
db.set_limit(Limit::SQLITE_LIMIT_FUNCTION_ARG, 32);
assert_eq!(32, db.limit(Limit::SQLITE_LIMIT_FUNCTION_ARG));
db.set_limit(Limit::SQLITE_LIMIT_ATTACHED, 2);
assert_eq!(2, db.limit(Limit::SQLITE_LIMIT_ATTACHED));
db.set_limit(Limit::SQLITE_LIMIT_LIKE_PATTERN_LENGTH, 128);
assert_eq!(128, db.limit(Limit::SQLITE_LIMIT_LIKE_PATTERN_LENGTH));
db.set_limit(Limit::SQLITE_LIMIT_VARIABLE_NUMBER, 99);
assert_eq!(99, db.limit(Limit::SQLITE_LIMIT_VARIABLE_NUMBER));
if crate::version_number() >= 3_006_018 {
db.set_limit(Limit::SQLITE_LIMIT_TRIGGER_DEPTH, 32);
assert_eq!(32, db.limit(Limit::SQLITE_LIMIT_TRIGGER_DEPTH));
}
if crate::version_number() >= 3_008_007 {
db.set_limit(Limit::SQLITE_LIMIT_WORKER_THREADS, 2);
assert_eq!(2, db.limit(Limit::SQLITE_LIMIT_WORKER_THREADS));
}
Ok(())
}
}