|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace Helix\DB; |
|
4
|
|
|
|
|
5
|
|
|
use Helix\DB; |
|
6
|
|
|
|
|
7
|
|
|
/** |
|
8
|
|
|
* Array storage in an extension table. |
|
9
|
|
|
* |
|
10
|
|
|
* @method static static factory(DB $db, string $name, string $type = 'string') |
|
11
|
|
|
*/ |
|
12
|
|
|
class EAV extends Table { |
|
13
|
|
|
|
|
14
|
|
|
/** |
|
15
|
|
|
* The PHP-native scalar type for the `value` column (implied nullable). |
|
16
|
|
|
* |
|
17
|
|
|
* @var string |
|
18
|
|
|
*/ |
|
19
|
|
|
protected $type; |
|
20
|
|
|
|
|
21
|
|
|
/** |
|
22
|
|
|
* @param DB $db |
|
23
|
|
|
* @param string $name |
|
24
|
|
|
* @param string $type |
|
25
|
|
|
*/ |
|
26
|
|
|
public function __construct (DB $db, string $name, string $type = 'string') { |
|
27
|
|
|
parent::__construct($db, $name, ['entity', 'attribute', 'value']); |
|
28
|
|
|
$this->type = $type; |
|
29
|
|
|
} |
|
30
|
|
|
|
|
31
|
|
|
/** |
|
32
|
|
|
* Whether an entity has an attribute. |
|
33
|
|
|
* |
|
34
|
|
|
* @param int $id |
|
35
|
|
|
* @param string $attribute |
|
36
|
|
|
* @return bool |
|
37
|
|
|
*/ |
|
38
|
|
|
public function exists (int $id, string $attribute): bool { |
|
39
|
|
|
$statement = $this->cache(__FUNCTION__, function() { |
|
40
|
|
|
return $this->select(['COUNT(*) > 0'])->where('entity = ? AND attribute = ?')->prepare(); |
|
41
|
|
|
}); |
|
42
|
|
|
$exists = (bool)$statement([$id, $attribute])->fetchColumn(); |
|
43
|
|
|
$statement->closeCursor(); |
|
44
|
|
|
return $exists; |
|
45
|
|
|
} |
|
46
|
|
|
|
|
47
|
|
|
/** |
|
48
|
|
|
* Pivots and self-joins to return a {@link Select} for the `entity` column, |
|
49
|
|
|
* matching on attribute and value. |
|
50
|
|
|
* |
|
51
|
|
|
* @see DB::match() |
|
52
|
|
|
* |
|
53
|
|
|
* @param array $match `[attribute => value]`. If empty, selects all IDs for entities having at least one attribute. |
|
54
|
|
|
* @return Select |
|
55
|
|
|
*/ |
|
56
|
|
|
public function findAll (array $match) { |
|
57
|
|
|
$select = $this->select([$this['entity']]); |
|
58
|
|
|
$prior = $this; |
|
59
|
|
|
foreach ($match as $attribute => $value) { |
|
60
|
|
|
$alias = $this->setName("{$this}__{$attribute}"); |
|
61
|
|
|
$select->join("{$this} AS {$alias}", |
|
62
|
|
|
$alias['entity']->isEqual($prior['entity']), |
|
63
|
|
|
$alias['attribute']->isEqual($attribute), |
|
64
|
|
|
$this->db->match($alias['value'], $value) |
|
65
|
|
|
); |
|
66
|
|
|
$prior = $alias; |
|
67
|
|
|
} |
|
68
|
|
|
$select->group($this['entity']); |
|
69
|
|
|
return $select; |
|
70
|
|
|
} |
|
71
|
|
|
|
|
72
|
|
|
/** |
|
73
|
|
|
* @return string |
|
74
|
|
|
*/ |
|
75
|
|
|
final public function getType (): string { |
|
76
|
|
|
return $this->type; |
|
77
|
|
|
} |
|
78
|
|
|
|
|
79
|
|
|
/** |
|
80
|
|
|
* Returns an entity's attributes. |
|
81
|
|
|
* |
|
82
|
|
|
* @param int $id |
|
83
|
|
|
* @return array `[attribute => value]` |
|
84
|
|
|
*/ |
|
85
|
|
|
public function load (int $id): array { |
|
86
|
|
|
$statement = $this->cache(__FUNCTION__, function() { |
|
87
|
|
|
$select = $this->select(['attribute', 'value']); |
|
88
|
|
|
$select->where('entity = ?'); |
|
89
|
|
|
$select->order('attribute'); |
|
90
|
|
|
return $select->prepare(); |
|
91
|
|
|
}); |
|
92
|
|
|
return array_map([$this, 'setType'], $statement([$id])->fetchAll(DB::FETCH_KEY_PAIR)); |
|
93
|
|
|
} |
|
94
|
|
|
|
|
95
|
|
|
/** |
|
96
|
|
|
* Returns associative attribute-value arrays for the given IDs. |
|
97
|
|
|
* |
|
98
|
|
|
* @param int[] $ids |
|
99
|
|
|
* @return array[] `[id => attribute => value] |
|
100
|
|
|
*/ |
|
101
|
|
|
public function loadAll (array $ids): array { |
|
102
|
|
|
if (empty($ids)) { |
|
103
|
|
|
return []; |
|
104
|
|
|
} |
|
105
|
|
|
if (count($ids) === 1) { |
|
106
|
|
|
return [current($ids) => $this->load(current($ids))]; |
|
107
|
|
|
} |
|
108
|
|
|
$loadAll = $this->select(['entity', 'attribute', 'value']) |
|
109
|
|
|
->where($this->db->match('entity', $this->db->marks($ids))) |
|
110
|
|
|
->order('entity, attribute'); |
|
111
|
|
|
$values = array_fill_keys($ids, []); |
|
112
|
|
|
foreach ($loadAll->getEach(array_values($ids)) as $row) { |
|
113
|
|
|
$values[$row['entity']][$row['attribute']] = $this->setType($row['value']); |
|
114
|
|
|
} |
|
115
|
|
|
return $values; |
|
116
|
|
|
} |
|
117
|
|
|
|
|
118
|
|
|
/** |
|
119
|
|
|
* Upserts an entity's attributes with those given. |
|
120
|
|
|
* Stored attributes not given here are pruned. |
|
121
|
|
|
* |
|
122
|
|
|
* @param int $id |
|
123
|
|
|
* @param array $values `[attribute => value]` |
|
124
|
|
|
* @return $this |
|
125
|
|
|
*/ |
|
126
|
|
|
public function save (int $id, array $values) { |
|
127
|
|
|
$this->delete([ |
|
128
|
|
|
$this['entity']->isEqual($id), |
|
129
|
|
|
$this['attribute']->isNotEqual(array_keys($values)) |
|
130
|
|
|
]); |
|
131
|
|
|
$statement = $this->cache(__FUNCTION__, function() { |
|
132
|
|
|
if ($this->db->isSQLite()) { |
|
133
|
|
|
return $this->db->prepare( |
|
134
|
|
|
"INSERT INTO {$this} (entity,attribute,value) VALUES (?,?,?)" |
|
135
|
|
|
. " ON CONFLICT (entity,attribute) DO UPDATE SET value=excluded.value" |
|
136
|
|
|
); |
|
137
|
|
|
} |
|
138
|
|
|
return $this->db->prepare( |
|
139
|
|
|
"INSERT INTO {$this} (entity,attribute,value) VALUES (?,?,?)" |
|
140
|
|
|
. " ON DUPLICATE KEY UPDATE value=VALUES(value)" |
|
141
|
|
|
); |
|
142
|
|
|
}); |
|
143
|
|
|
foreach ($values as $attribute => $value) { |
|
144
|
|
|
$statement->execute([$id, $attribute, $value]); |
|
145
|
|
|
} |
|
146
|
|
|
$statement->closeCursor(); |
|
147
|
|
|
return $this; |
|
148
|
|
|
} |
|
149
|
|
|
|
|
150
|
|
|
/** |
|
151
|
|
|
* @param mixed $value |
|
152
|
|
|
* @return null|scalar |
|
153
|
|
|
*/ |
|
154
|
|
|
protected function setType ($value) { |
|
155
|
|
|
if (isset($value)) { |
|
156
|
|
|
settype($value, $this->type); |
|
157
|
|
|
} |
|
158
|
|
|
return $value; |
|
159
|
|
|
} |
|
160
|
|
|
} |
hfw /
db
