|
1
|
|
|
<?php |
|
2
|
|
|
declare(strict_types=1); |
|
3
|
|
|
|
|
4
|
|
|
namespace Stratadox\TableLoader; |
|
5
|
|
|
|
|
6
|
|
|
use function in_array; |
|
7
|
|
|
use Stratadox\Hydrator\ArrayHydrator; |
|
8
|
|
|
use Stratadox\Hydrator\CannotHydrate; |
|
9
|
|
|
use Stratadox\Hydrator\Hydrates; |
|
10
|
|
|
|
|
11
|
|
|
/** |
|
12
|
|
|
* Defines a has-many relationship. |
|
13
|
|
|
* |
|
14
|
|
|
* @author Stratadox |
|
15
|
|
|
*/ |
|
16
|
|
|
final class HasMany implements MakesConnections |
|
17
|
|
|
{ |
|
18
|
|
|
private $property; |
|
19
|
|
|
private $collection; |
|
20
|
|
|
|
|
21
|
|
|
private function __construct(string $property, Hydrates $collection) |
|
22
|
|
|
{ |
|
23
|
|
|
$this->property = $property; |
|
24
|
|
|
$this->collection = $collection; |
|
25
|
|
|
} |
|
26
|
|
|
|
|
27
|
|
|
/** |
|
28
|
|
|
* Makes a connector for a has-many type relationship. |
|
29
|
|
|
* |
|
30
|
|
|
* @param string $property The property to map. |
|
31
|
|
|
* @param Hydrates|null $collection The collection hydrator to use. |
|
32
|
|
|
* @return MakesConnections The relationship connector. |
|
33
|
|
|
*/ |
|
34
|
|
|
public static function in( |
|
35
|
|
|
string $property, |
|
36
|
|
|
Hydrates $collection = null |
|
37
|
|
|
): MakesConnections { |
|
38
|
|
|
return new self($property, $collection ?: ArrayHydrator::create()); |
|
39
|
|
|
} |
|
40
|
|
|
|
|
41
|
|
|
/** @inheritdoc */ |
|
42
|
|
|
public function load( |
|
43
|
|
|
KnowsWhereToLook $from, |
|
44
|
|
|
array $data, |
|
45
|
|
|
KnowsWhereToLook $to, |
|
46
|
|
|
ContainsResultingObjects $objects |
|
47
|
|
|
): array { |
|
48
|
|
|
$related = []; |
|
49
|
|
|
foreach ($data as $row) { |
|
50
|
|
|
$object = $objects[$to->label()][$to->this($row)]; |
|
51
|
|
|
if ($this->shouldAdd($object, $from->this($row), $related)) { |
|
52
|
|
|
$related[$from->this($row)][] = $object; |
|
53
|
|
|
} |
|
54
|
|
|
} |
|
55
|
|
|
return [$this->property => $this->makeCollections($from->label(), $related)]; |
|
56
|
|
|
} |
|
57
|
|
|
|
|
58
|
|
|
/** |
|
59
|
|
|
* Checks if we should add the object to the relations collection. |
|
60
|
|
|
* |
|
61
|
|
|
* @param object $relation The related object. |
|
62
|
|
|
* @param string $from The id of the object that holds the relationship. |
|
63
|
|
|
* @param array $existing The map of existing relationships. |
|
64
|
|
|
* @return bool Whether the object is new. |
|
65
|
|
|
*/ |
|
66
|
|
|
private function shouldAdd( |
|
67
|
|
|
object $relation, |
|
68
|
|
|
string $from, |
|
69
|
|
|
array $existing |
|
70
|
|
|
): bool { |
|
71
|
|
|
return !isset($existing[$from]) |
|
72
|
|
|
|| !in_array($relation, $existing[$from], true); |
|
73
|
|
|
} |
|
74
|
|
|
|
|
75
|
|
|
/** |
|
76
|
|
|
* Makes collections for the relationship. |
|
77
|
|
|
* |
|
78
|
|
|
* @param string $from The label of the entity we connect from. |
|
79
|
|
|
* @param array[] $many The objects to connect with. |
|
80
|
|
|
* |
|
81
|
|
|
* @return array The collections as [string id => array|object collection] |
|
82
|
|
|
* @throws UnmappableRelationship |
|
83
|
|
|
*/ |
|
84
|
|
|
private function makeCollections(string $from, array $many): array |
|
85
|
|
|
{ |
|
86
|
|
|
$collections = []; |
|
87
|
|
|
foreach ($many as $id => $relatedObjects) { |
|
88
|
|
|
try { |
|
89
|
|
|
$collections[$id] = $this->collection->fromArray($relatedObjects); |
|
90
|
|
|
} catch (CannotHydrate $exception) { |
|
91
|
|
|
throw UnmappableRelationship::encountered($exception, $this->property, $from, $id); |
|
92
|
|
|
} |
|
93
|
|
|
} |
|
94
|
|
|
return $collections; |
|
95
|
|
|
} |
|
96
|
|
|
} |
|
97
|
|
|
|
Stratadox /
TableLoader
