|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace BenTools\Where\Helper; |
|
4
|
|
|
|
|
5
|
|
|
use BenTools\Where\Expression\Expression; |
|
6
|
|
|
use function BenTools\Where\where; |
|
7
|
|
|
|
|
8
|
|
|
/** |
|
9
|
|
|
* @internal |
|
10
|
|
|
*/ |
|
11
|
|
|
final class CaseHelper extends Expression |
|
12
|
|
|
{ |
|
13
|
|
|
|
|
14
|
|
|
/** |
|
15
|
|
|
* @var Expression |
|
16
|
|
|
*/ |
|
17
|
|
|
private $field; |
|
18
|
|
|
|
|
19
|
|
|
/** |
|
20
|
|
|
* @var Expression[] |
|
21
|
|
|
*/ |
|
22
|
|
|
private $when = []; |
|
23
|
|
|
|
|
24
|
|
|
/** |
|
25
|
|
|
* @var Expression[] |
|
26
|
|
|
*/ |
|
27
|
|
|
private $then = []; |
|
28
|
|
|
|
|
29
|
|
|
/** |
|
30
|
|
|
* @var Expression |
|
31
|
|
|
*/ |
|
32
|
|
|
private $else; |
|
33
|
|
|
|
|
34
|
|
|
private $lock = false; |
|
35
|
|
|
|
|
36
|
|
|
/** |
|
37
|
|
|
* CaseHelper constructor. |
|
38
|
|
|
* @param Expression|null $field |
|
39
|
|
|
*/ |
|
40
|
|
|
private function __construct(Expression $field = null) |
|
41
|
|
|
{ |
|
42
|
|
|
$this->field = $field; |
|
43
|
|
|
} |
|
44
|
|
|
|
|
45
|
|
|
/** |
|
46
|
|
|
* @param $expression |
|
47
|
|
|
* @param array ...$values |
|
48
|
|
|
* @return CaseHelper |
|
49
|
|
|
* @throws \InvalidArgumentException |
|
50
|
|
|
*/ |
|
51
|
|
|
public function when($expression, ...$values): self |
|
52
|
|
|
{ |
|
53
|
|
|
if (\count($this->when) !== \count($this->then)) { |
|
54
|
|
|
throw new \RuntimeException("Mising a 'then' somewhere."); |
|
55
|
|
|
} |
|
56
|
|
|
if (true === $this->lock) { |
|
57
|
|
|
throw new \RuntimeException('This conditionnal structure is locked.'); |
|
58
|
|
|
} |
|
59
|
|
|
$clone = clone $this; |
|
60
|
|
|
$clone->when[] = where($expression, ...$values); |
|
61
|
|
|
return $clone; |
|
62
|
|
|
} |
|
63
|
|
|
|
|
64
|
|
|
/** |
|
65
|
|
|
* @param $expression |
|
66
|
|
|
* @param array ...$values |
|
67
|
|
|
* @return CaseHelper |
|
68
|
|
|
* @throws \InvalidArgumentException |
|
69
|
|
|
*/ |
|
70
|
|
|
public function then($expression, ...$values): self |
|
71
|
|
|
{ |
|
72
|
|
|
if (\count($this->when) !== \count($this->then) + 1) { |
|
73
|
|
|
throw new \RuntimeException("Mising a 'when' somewhere."); |
|
74
|
|
|
} |
|
75
|
|
|
if (true === $this->lock) { |
|
76
|
|
|
throw new \RuntimeException('This conditionnal structure is locked.'); |
|
77
|
|
|
} |
|
78
|
|
|
$clone = clone $this; |
|
79
|
|
|
$clone->then[] = where($expression, ...$values); |
|
80
|
|
|
return $clone; |
|
81
|
|
|
} |
|
82
|
|
|
|
|
83
|
|
|
/** |
|
84
|
|
|
* @param $expression |
|
85
|
|
|
* @param array ...$values |
|
86
|
|
|
* @return CaseHelper |
|
87
|
|
|
* @throws \InvalidArgumentException |
|
88
|
|
|
*/ |
|
89
|
|
|
public function else($expression, ...$values): self |
|
90
|
|
|
{ |
|
91
|
|
|
if (true === $this->lock) { |
|
92
|
|
|
throw new \RuntimeException('This conditionnal structure is locked.'); |
|
93
|
|
|
} |
|
94
|
|
|
$clone = clone $this; |
|
95
|
|
|
$clone->else = where($expression, ...$values); |
|
96
|
|
|
return $clone; |
|
97
|
|
|
} |
|
98
|
|
|
|
|
99
|
|
|
/** |
|
100
|
|
|
* Only for fluent purposes. |
|
101
|
|
|
* |
|
102
|
|
|
* @return CaseHelper |
|
103
|
|
|
*/ |
|
104
|
|
|
public function end(): self |
|
105
|
|
|
{ |
|
106
|
|
|
$clone = clone $this; |
|
107
|
|
|
$clone->lock = true; |
|
108
|
|
|
return $clone; |
|
109
|
|
|
} |
|
110
|
|
|
|
|
111
|
|
|
/** |
|
112
|
|
|
* @return string |
|
113
|
|
|
*/ |
|
114
|
|
|
public function __toString(): string |
|
115
|
|
|
{ |
|
116
|
|
|
$parts = ['CASE']; |
|
117
|
|
|
|
|
118
|
|
|
if (null !== $this->field) { |
|
119
|
|
|
$parts[] = $this->field; |
|
120
|
|
|
} |
|
121
|
|
|
|
|
122
|
|
|
foreach ($this->when as $key => $value) { |
|
123
|
|
|
$parts[] = 'WHEN'; |
|
124
|
|
|
$parts[] = $this->when[$key]; |
|
125
|
|
|
$parts[] = 'THEN'; |
|
126
|
|
|
$parts[] = $this->then[$key] ?? null; |
|
127
|
|
|
} |
|
128
|
|
|
|
|
129
|
|
|
if (null !== $this->else) { |
|
130
|
|
|
$parts[] = 'ELSE'; |
|
131
|
|
|
$parts[] = $this->else; |
|
132
|
|
|
} |
|
133
|
|
|
|
|
134
|
|
|
$parts[] = 'END'; |
|
135
|
|
|
|
|
136
|
|
|
return \implode(' ', $parts); |
|
137
|
|
|
} |
|
138
|
|
|
|
|
139
|
|
|
/** |
|
140
|
|
|
* @return array |
|
141
|
|
|
*/ |
|
142
|
|
|
public function getValues(): array |
|
143
|
|
|
{ |
|
144
|
|
|
$values = [[]]; |
|
145
|
|
|
|
|
146
|
|
|
if (null !== $this->field) { |
|
147
|
|
|
$values[] = $this->field->getValues(); |
|
148
|
|
|
} |
|
149
|
|
|
|
|
150
|
|
|
foreach ($this->when as $key => $whenExpression) { |
|
151
|
|
|
$values[] = $whenExpression->getValues(); |
|
152
|
|
|
$thenExpression = $this->then[$key]; |
|
153
|
|
|
if (null !== $thenExpression) { |
|
154
|
|
|
$values[] = $thenExpression->getValues(); |
|
155
|
|
|
} |
|
156
|
|
|
} |
|
157
|
|
|
|
|
158
|
|
|
if (null !== $this->else) { |
|
159
|
|
|
$values[] = $this->else->getValues(); |
|
160
|
|
|
} |
|
161
|
|
|
|
|
162
|
|
|
return \array_merge(...$values); |
|
163
|
|
|
} |
|
164
|
|
|
|
|
165
|
|
|
/** |
|
166
|
|
|
* @param $expression |
|
167
|
|
|
* @param array ...$values |
|
168
|
|
|
* @return CaseHelper |
|
169
|
|
|
* @throws \InvalidArgumentException |
|
170
|
|
|
*/ |
|
171
|
|
|
public static function create($expression = null, ...$values): self |
|
172
|
|
|
{ |
|
173
|
|
|
if (null !== $expression) { |
|
174
|
|
|
$expression = where($expression, ...$values); |
|
175
|
|
|
} |
|
176
|
|
|
return new self($expression); |
|
177
|
|
|
} |
|
178
|
|
|
} |
|
179
|
|
|
|
bpolaszek /
where
