|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
declare(strict_types=1); |
|
4
|
|
|
|
|
5
|
|
|
namespace Yiisoft\Db\Mysql; |
|
6
|
|
|
|
|
7
|
|
|
use Yiisoft\Db\Expression\ExpressionBuilder; |
|
8
|
|
|
use Yiisoft\Db\Expression\ExpressionInterface; |
|
9
|
|
|
use Yiisoft\Db\Expression\JsonExpression; |
|
10
|
|
|
use Yiisoft\Db\Mysql\Builder\JsonExpressionBuilder; |
|
11
|
|
|
use Yiisoft\Db\QueryBuilder\AbstractDQLQueryBuilder; |
|
12
|
|
|
|
|
13
|
|
|
use function array_merge; |
|
14
|
|
|
use function ctype_digit; |
|
15
|
|
|
|
|
16
|
|
|
final class DQLQueryBuilder extends AbstractDQLQueryBuilder |
|
17
|
|
|
{ |
|
18
|
238 |
|
public function buildLimit(ExpressionInterface|int|null $limit, ExpressionInterface|int|null $offset): string |
|
19
|
|
|
{ |
|
20
|
238 |
|
$sql = ''; |
|
21
|
|
|
|
|
22
|
238 |
|
if ($this->hasLimit($limit)) { |
|
23
|
16 |
|
$sql = 'LIMIT ' . ($limit instanceof ExpressionInterface ? $this->buildExpression($limit) : (string)$limit); |
|
24
|
|
|
|
|
25
|
16 |
|
if ($this->hasOffset($offset)) { |
|
26
|
16 |
|
$sql .= ' OFFSET ' . ($offset instanceof ExpressionInterface ? $this->buildExpression($offset) : (string)$offset); |
|
27
|
|
|
} |
|
28
|
228 |
|
} elseif ($this->hasOffset($offset)) { |
|
29
|
|
|
/** |
|
30
|
|
|
* limit is not optional in MySQL. |
|
31
|
|
|
* |
|
32
|
|
|
* http://stackoverflow.com/a/271650/1106908 |
|
33
|
|
|
* http://dev.mysql.com/doc/refman/5.0/en/select.html#idm47619502796240 |
|
34
|
|
|
*/ |
|
35
|
1 |
|
$sql = 'LIMIT ' . |
|
36
|
1 |
|
($offset instanceof ExpressionInterface ? $this->buildExpression($offset) : (string)$offset) . |
|
37
|
1 |
|
', 18446744073709551615'; // 2^64-1 |
|
38
|
|
|
} |
|
39
|
|
|
|
|
40
|
238 |
|
return $sql; |
|
41
|
|
|
} |
|
42
|
|
|
|
|
43
|
|
|
/** |
|
44
|
|
|
* Checks to see if the given limit is effective. |
|
45
|
|
|
* |
|
46
|
|
|
* @param mixed $limit The given limit. |
|
47
|
|
|
* |
|
48
|
|
|
* @return bool Whether the limit is effective. |
|
49
|
|
|
*/ |
|
50
|
238 |
|
protected function hasLimit(mixed $limit): bool |
|
51
|
|
|
{ |
|
52
|
|
|
/** In MySQL limit argument must be non-negative integer constant */ |
|
53
|
238 |
|
return ctype_digit((string) $limit); |
|
54
|
|
|
} |
|
55
|
|
|
|
|
56
|
|
|
/** |
|
57
|
|
|
* Checks to see if the given offset is effective. |
|
58
|
|
|
* |
|
59
|
|
|
* @param mixed $offset The given offset. |
|
60
|
|
|
* |
|
61
|
|
|
* @return bool Whether the offset is effective. |
|
62
|
|
|
*/ |
|
63
|
238 |
|
protected function hasOffset(mixed $offset): bool |
|
64
|
|
|
{ |
|
65
|
|
|
/** In MySQL offset argument must be non-negative integer constant */ |
|
66
|
238 |
|
$offset = (string) $offset; |
|
67
|
238 |
|
return ctype_digit($offset) && $offset !== '0'; |
|
68
|
|
|
} |
|
69
|
|
|
|
|
70
|
|
|
/** |
|
71
|
|
|
* Contains array of default expression builders. Extend this method and override it, if you want to change default |
|
72
|
|
|
* expression builders for this query builder. |
|
73
|
|
|
* |
|
74
|
|
|
* See {@see ExpressionBuilder} docs for details. |
|
75
|
|
|
*/ |
|
76
|
507 |
|
protected function defaultExpressionBuilders(): array |
|
77
|
|
|
{ |
|
78
|
507 |
|
return array_merge( |
|
79
|
507 |
|
parent::defaultExpressionBuilders(), |
|
80
|
507 |
|
[ |
|
81
|
507 |
|
JsonExpression::class => JsonExpressionBuilder::class, |
|
82
|
507 |
|
] |
|
83
|
507 |
|
); |
|
84
|
|
|
} |
|
85
|
|
|
} |
|
86
|
|
|
|
yiisoft /
db-mysql
