|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace Helix\DB; |
|
4
|
|
|
|
|
5
|
|
|
use Helix\DB; |
|
6
|
|
|
|
|
7
|
|
|
/** |
|
8
|
|
|
* Represents a junction table, derived from an annotated interface. |
|
9
|
|
|
* |
|
10
|
|
|
* Interface Annotations: |
|
11
|
|
|
* |
|
12
|
|
|
* - `@junction <TABLE>` |
|
13
|
|
|
* - `@foreign <COLUMN> <CLASS FQN>` |
|
14
|
|
|
* |
|
15
|
|
|
* @method static static factory(DB $db, string $interface) |
|
16
|
|
|
*/ |
|
17
|
|
|
class Junction extends Table |
|
18
|
|
|
{ |
|
19
|
|
|
|
|
20
|
|
|
/** |
|
21
|
|
|
* `[column => class]` |
|
22
|
|
|
* |
|
23
|
|
|
* @var string[] |
|
24
|
|
|
*/ |
|
25
|
|
|
protected $classes = []; |
|
26
|
|
|
|
|
27
|
|
|
/** |
|
28
|
|
|
* @var Reflection |
|
29
|
|
|
*/ |
|
30
|
|
|
protected $ref; |
|
31
|
|
|
|
|
32
|
|
|
/** |
|
33
|
|
|
* @param DB $db |
|
34
|
|
|
* @param string $interface |
|
35
|
|
|
*/ |
|
36
|
|
|
public function __construct(DB $db, string $interface) |
|
37
|
|
|
{ |
|
38
|
|
|
$this->ref = Reflection::factory($db, $interface); |
|
39
|
|
|
$this->classes = $this->ref->getForeignClasses(); |
|
40
|
|
|
parent::__construct($db, $this->ref->getJunctionTable(), array_keys($this->classes)); |
|
41
|
|
|
} |
|
42
|
|
|
|
|
43
|
|
|
/** |
|
44
|
|
|
* Returns a {@link Select} for entities referenced by a foreign key. |
|
45
|
|
|
* |
|
46
|
|
|
* The {@link Select} is literal and can be iterated directly. |
|
47
|
|
|
* |
|
48
|
|
|
* @param string $key The column referencing the class to collect. |
|
49
|
|
|
* @param array $match Keyed by junction column. |
|
50
|
|
|
* @return Select|EntityInterface[] |
|
51
|
|
|
*/ |
|
52
|
|
|
public function findAll(string $key, array $match = []) |
|
53
|
|
|
{ |
|
54
|
|
|
$record = $this->getRecord($key); |
|
55
|
|
|
$select = $record->loadAll(); |
|
56
|
|
|
$select->join($this, $this[$key]->isEqual($record['id'])); |
|
57
|
|
|
foreach ($match as $a => $b) { |
|
58
|
|
|
$select->where($this->db->match($this[$a], $b)); |
|
59
|
|
|
} |
|
60
|
|
|
return $select; |
|
61
|
|
|
} |
|
62
|
|
|
|
|
63
|
|
|
/** |
|
64
|
|
|
* @param string $column |
|
65
|
|
|
* @return string |
|
66
|
|
|
*/ |
|
67
|
|
|
final public function getClass(string $column): string |
|
68
|
|
|
{ |
|
69
|
|
|
return $this->classes[$column]; |
|
70
|
|
|
} |
|
71
|
|
|
|
|
72
|
|
|
/** |
|
73
|
|
|
* @return string[] |
|
74
|
|
|
*/ |
|
75
|
|
|
final public function getClasses() |
|
76
|
|
|
{ |
|
77
|
|
|
return $this->classes; |
|
78
|
|
|
} |
|
79
|
|
|
|
|
80
|
|
|
/** |
|
81
|
|
|
* @param string $column |
|
82
|
|
|
* @return Record |
|
83
|
|
|
*/ |
|
84
|
|
|
public function getRecord(string $column) |
|
85
|
|
|
{ |
|
86
|
|
|
return $this->db->getRecord($this->classes[$column]); |
|
87
|
|
|
} |
|
88
|
|
|
|
|
89
|
|
|
/** |
|
90
|
|
|
* @return Record[] |
|
91
|
|
|
*/ |
|
92
|
|
|
public function getRecords() |
|
93
|
|
|
{ |
|
94
|
|
|
return array_map(fn($class) => $this->db->getRecord($class), $this->classes); |
|
95
|
|
|
} |
|
96
|
|
|
|
|
97
|
|
|
/** |
|
98
|
|
|
* `INSERT IGNORE` to link entities. |
|
99
|
|
|
* |
|
100
|
|
|
* @param int[]|EntityInterface[] $ids Keyed by column |
|
101
|
|
|
* @return int Rows affected |
|
102
|
|
|
*/ |
|
103
|
|
|
public function link(array $ids): int |
|
104
|
|
|
{ |
|
105
|
|
|
$statement = $this->cache(__FUNCTION__, function () { |
|
106
|
|
|
$columns = implode(',', array_keys($this->columns)); |
|
107
|
|
|
$slots = implode(',', $this->db->slots(array_keys($this->columns))); |
|
108
|
|
|
if ($this->db->isSQLite()) { |
|
109
|
|
|
$sql = "INSERT OR IGNORE INTO {$this} ({$columns}) VALUES ({$slots})"; |
|
110
|
|
|
} else { |
|
111
|
|
|
$sql = "INSERT IGNORE INTO {$this} ({$columns}) VALUES ({$slots})"; |
|
112
|
|
|
} |
|
113
|
|
|
return $this->db->prepare($sql); |
|
114
|
|
|
}); |
|
115
|
|
|
$ids = array_map(fn($id) => $id instanceof EntityInterface ? $id->getId() : $id, $ids); |
|
116
|
|
|
$affected = $statement($ids)->rowCount(); |
|
117
|
|
|
$statement->closeCursor(); |
|
118
|
|
|
return $affected; |
|
119
|
|
|
} |
|
120
|
|
|
|
|
121
|
|
|
/** |
|
122
|
|
|
* Typed alias for {@link delete()} |
|
123
|
|
|
* |
|
124
|
|
|
* @param int[]|EntityInterface[] $ids Keyed by column |
|
125
|
|
|
* @return int Rows affected |
|
126
|
|
|
*/ |
|
127
|
|
|
public function unlink(array $ids): int |
|
128
|
|
|
{ |
|
129
|
|
|
return $this->delete($ids); |
|
130
|
|
|
} |
|
131
|
|
|
} |
|
132
|
|
|
|
hfw /
db
