|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace Helix\DB\SQL; |
|
4
|
|
|
|
|
5
|
|
|
use Helix\DB; |
|
6
|
|
|
|
|
7
|
|
|
/** |
|
8
|
|
|
* Produces numeric expressions for the instance. |
|
9
|
|
|
*/ |
|
10
|
|
|
trait NumTrait { |
|
11
|
|
|
|
|
12
|
|
|
abstract public function __toString (); |
|
13
|
|
|
|
|
14
|
|
|
/** |
|
15
|
|
|
* @var DB |
|
16
|
|
|
*/ |
|
17
|
|
|
protected $db; |
|
18
|
|
|
|
|
19
|
|
|
/** |
|
20
|
|
|
* `ABS($this)` |
|
21
|
|
|
* |
|
22
|
|
|
* @return Num |
|
23
|
|
|
*/ |
|
24
|
|
|
public function abs () { |
|
25
|
|
|
return Num::factory($this->db, "ABS({$this})"); |
|
26
|
|
|
} |
|
27
|
|
|
|
|
28
|
|
|
/** |
|
29
|
|
|
* `($this + $arg)` |
|
30
|
|
|
* |
|
31
|
|
|
* @param number|ValueInterface $arg |
|
32
|
|
|
* @return Num |
|
33
|
|
|
*/ |
|
34
|
|
|
public function add ($arg) { |
|
35
|
|
|
return Num::factory($this->db, "({$this} + {$arg})"); |
|
36
|
|
|
} |
|
37
|
|
|
|
|
38
|
|
|
/** |
|
39
|
|
|
* `CEIL($this)` |
|
40
|
|
|
* |
|
41
|
|
|
* @return Num |
|
42
|
|
|
*/ |
|
43
|
|
|
public function ceil () { |
|
44
|
|
|
return Num::factory($this->db, "CEIL({$this})"); |
|
45
|
|
|
} |
|
46
|
|
|
|
|
47
|
|
|
/** |
|
48
|
|
|
* `($this / $arg)` |
|
49
|
|
|
* |
|
50
|
|
|
* @param number|ValueInterface $arg |
|
51
|
|
|
* @return Num |
|
52
|
|
|
*/ |
|
53
|
|
|
public function divide ($arg) { |
|
54
|
|
|
return Num::factory($this->db, "({$this} / {$arg})"); |
|
55
|
|
|
} |
|
56
|
|
|
|
|
57
|
|
|
/** |
|
58
|
|
|
* `FLOOR($this)` |
|
59
|
|
|
* |
|
60
|
|
|
* @return Num |
|
61
|
|
|
*/ |
|
62
|
|
|
public function floor () { |
|
63
|
|
|
return Num::factory($this->db, "FLOOR({$this})"); |
|
64
|
|
|
} |
|
65
|
|
|
|
|
66
|
|
|
/** |
|
67
|
|
|
* `($this % 2) = 0` |
|
68
|
|
|
* |
|
69
|
|
|
* @return Predicate |
|
70
|
|
|
*/ |
|
71
|
|
|
public function isEven () { |
|
72
|
|
|
return Predicate::factory($this->db, "({$this} % 2) = 0"); |
|
73
|
|
|
} |
|
74
|
|
|
|
|
75
|
|
|
/** |
|
76
|
|
|
* `$this < 0` |
|
77
|
|
|
* |
|
78
|
|
|
* @return Predicate |
|
79
|
|
|
*/ |
|
80
|
|
|
public function isNegative () { |
|
81
|
|
|
return Predicate::factory($this->db, "{$this} < 0"); |
|
82
|
|
|
} |
|
83
|
|
|
|
|
84
|
|
|
/** |
|
85
|
|
|
* `($this % 2) <> 0` |
|
86
|
|
|
* |
|
87
|
|
|
* @return Predicate |
|
88
|
|
|
*/ |
|
89
|
|
|
public function isOdd () { |
|
90
|
|
|
return Predicate::factory($this->db, "({$this} % 2) <> 0"); |
|
91
|
|
|
} |
|
92
|
|
|
|
|
93
|
|
|
/** |
|
94
|
|
|
* `$this > 0` |
|
95
|
|
|
* |
|
96
|
|
|
* @return Predicate |
|
97
|
|
|
*/ |
|
98
|
|
|
public function isPositive () { |
|
99
|
|
|
return Predicate::factory($this->db, "{$this} > 0"); |
|
100
|
|
|
} |
|
101
|
|
|
|
|
102
|
|
|
/** |
|
103
|
|
|
* `($this % $arg)` |
|
104
|
|
|
* |
|
105
|
|
|
* @param number|ValueInterface $arg |
|
106
|
|
|
* @return Num |
|
107
|
|
|
*/ |
|
108
|
|
|
public function modulo ($arg) { |
|
109
|
|
|
return Num::factory($this->db, "({$this} % {$arg})"); |
|
110
|
|
|
} |
|
111
|
|
|
|
|
112
|
|
|
/** |
|
113
|
|
|
* `($this * $arg)` |
|
114
|
|
|
* |
|
115
|
|
|
* @param number|ValueInterface $arg |
|
116
|
|
|
* @return Num |
|
117
|
|
|
*/ |
|
118
|
|
|
public function multiply ($arg) { |
|
119
|
|
|
return Num::factory($this->db, "({$this} * {$arg})"); |
|
120
|
|
|
} |
|
121
|
|
|
|
|
122
|
|
|
/** |
|
123
|
|
|
* `POW($this,$exponent)` |
|
124
|
|
|
* |
|
125
|
|
|
* @param number|ValueInterface $exponent |
|
126
|
|
|
* @return Num |
|
127
|
|
|
*/ |
|
128
|
|
|
public function pow ($exponent) { |
|
129
|
|
|
return Num::factory($this->db, "POW({$this},{$exponent})"); |
|
130
|
|
|
} |
|
131
|
|
|
|
|
132
|
|
|
/** |
|
133
|
|
|
* `ROUND($this,$decimals)` |
|
134
|
|
|
* |
|
135
|
|
|
* @param int $decimals |
|
136
|
|
|
* @return Num |
|
137
|
|
|
*/ |
|
138
|
|
|
public function round (int $decimals = 0) { |
|
139
|
|
|
return Num::factory($this->db, "ROUND({$this},{$decimals})"); |
|
140
|
|
|
} |
|
141
|
|
|
|
|
142
|
|
|
/** |
|
143
|
|
|
* `($this - $arg)` |
|
144
|
|
|
* |
|
145
|
|
|
* @param number|ValueInterface $arg |
|
146
|
|
|
* @return Num |
|
147
|
|
|
*/ |
|
148
|
|
|
public function subtract (ValueInterface $arg) { |
|
149
|
|
|
return Num::factory($this->db, "({$this} - {$arg})"); |
|
150
|
|
|
} |
|
151
|
|
|
} |
hfw /
db
