|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace Bdf\Prime\Query\Pagination\WalkStrategy; |
|
4
|
|
|
|
|
5
|
|
|
use Bdf\Prime\Collection\CollectionInterface; |
|
6
|
|
|
use Bdf\Prime\Connection\ConnectionInterface; |
|
7
|
|
|
use Bdf\Prime\Query\Contract\Limitable; |
|
8
|
|
|
use Bdf\Prime\Query\Contract\Orderable; |
|
9
|
|
|
use Bdf\Prime\Query\Contract\ReadOperation; |
|
10
|
|
|
use Bdf\Prime\Query\Contract\Whereable; |
|
11
|
|
|
use Bdf\Prime\Query\ReadCommandInterface; |
|
12
|
|
|
use InvalidArgumentException; |
|
13
|
|
|
|
|
14
|
|
|
/** |
|
15
|
|
|
* Walk strategy using a primary key (or any unique key) as cursor |
|
16
|
|
|
* This strategy supports deleting entities during the walk, but the entity must contains a single primary key, and the query must be ordered by this key |
|
17
|
|
|
* Any sort on other attribute are not supported |
|
18
|
|
|
* |
|
19
|
|
|
* @template E as object |
|
20
|
|
|
* @implements WalkStrategyInterface<E> |
|
21
|
|
|
*/ |
|
22
|
|
|
final class KeyWalkStrategy implements WalkStrategyInterface |
|
23
|
|
|
{ |
|
24
|
|
|
/** |
|
25
|
|
|
* @var KeyInterface<E> |
|
|
|
|
|
|
26
|
|
|
*/ |
|
27
|
|
|
private $key; |
|
28
|
|
|
|
|
29
|
|
|
/** |
|
30
|
|
|
* PrimaryKeyWalkStrategy constructor. |
|
31
|
|
|
* |
|
32
|
|
|
* @param KeyInterface<E> $key |
|
|
|
|
|
|
33
|
|
|
*/ |
|
34
|
16 |
|
public function __construct(KeyInterface $key) |
|
35
|
|
|
{ |
|
36
|
16 |
|
$this->key = $key; |
|
37
|
16 |
|
} |
|
38
|
|
|
|
|
39
|
|
|
/** |
|
|
|
|
|
|
40
|
|
|
* {@inheritdoc} |
|
41
|
|
|
*/ |
|
|
|
|
|
|
42
|
13 |
|
public function initialize(ReadCommandInterface $query, int $chunkSize, int $startPage): WalkCursor |
|
43
|
|
|
{ |
|
44
|
13 |
|
if (!self::supports($query, $startPage, $this->key->name())) { |
|
45
|
3 |
|
throw new InvalidArgumentException('KeyWalkStrategy is not supported by this query'); |
|
46
|
|
|
} |
|
47
|
|
|
|
|
48
|
|
|
/** @var Limitable&Orderable&ReadCommandInterface<ConnectionInterface, E> $query */ |
|
|
|
|
|
|
49
|
10 |
|
$query = clone $query; |
|
50
|
|
|
|
|
51
|
10 |
|
if (!isset($query->getOrders()[$this->key->name()])) { |
|
52
|
10 |
|
$query->order($this->key->name(), Orderable::ORDER_ASC); |
|
53
|
|
|
} |
|
54
|
|
|
|
|
55
|
10 |
|
$query->limit($chunkSize); |
|
56
|
|
|
|
|
57
|
|
|
/** @var WalkCursor<E> */ |
|
|
|
|
|
|
58
|
10 |
|
return new WalkCursor($query); |
|
59
|
|
|
} |
|
60
|
|
|
|
|
61
|
|
|
/** |
|
62
|
|
|
* {@inheritdoc} |
|
63
|
|
|
*/ |
|
64
|
|
|
#[ReadOperation] |
|
65
|
10 |
|
public function next(WalkCursor $cursor): WalkCursor |
|
66
|
|
|
{ |
|
67
|
10 |
|
$cursor = clone $cursor; |
|
68
|
|
|
|
|
69
|
10 |
|
if ($cursor->entities) { |
|
70
|
8 |
|
$cursor->cursor = $this->key->get(end($cursor->entities)); |
|
71
|
|
|
} |
|
72
|
|
|
|
|
73
|
10 |
|
if ($cursor->cursor !== null) { |
|
74
|
|
|
/** @var ReadCommandInterface<ConnectionInterface, E>&Orderable&Whereable $query */ |
|
|
|
|
|
|
75
|
8 |
|
$query = $cursor->query; |
|
76
|
8 |
|
$operator = $query->getOrders()[$this->key->name()] === Orderable::ORDER_ASC ? '>' : '<'; |
|
|
|
|
|
|
77
|
|
|
|
|
78
|
8 |
|
$query->where($this->key->name(), $operator, $cursor->cursor); |
|
|
|
|
|
|
79
|
|
|
} |
|
80
|
|
|
|
|
81
|
10 |
|
$cursor->entities = $cursor->query->all(); |
|
|
|
|
|
|
82
|
|
|
|
|
83
|
10 |
|
if ($cursor->entities instanceof CollectionInterface) { |
|
84
|
|
|
$cursor->entities = $cursor->entities->all(); |
|
85
|
|
|
} |
|
86
|
|
|
|
|
87
|
10 |
|
return $cursor; |
|
88
|
|
|
} |
|
89
|
|
|
|
|
90
|
|
|
/** |
|
91
|
|
|
* Check if the strategy supports the given parameters |
|
92
|
|
|
* |
|
93
|
|
|
* @param ReadCommandInterface $query The query |
|
94
|
|
|
* @param int|null $startPage The start page |
|
|
|
|
|
|
95
|
|
|
* @param string $key The cursor key |
|
96
|
|
|
* |
|
97
|
|
|
* @return bool |
|
|
|
|
|
|
98
|
|
|
* |
|
99
|
|
|
* @psalm-assert-if-true Orderable&Limitable&Whereable $query |
|
100
|
|
|
*/ |
|
101
|
16 |
|
public static function supports(ReadCommandInterface $query, ?int $startPage, string $key): bool |
|
102
|
|
|
{ |
|
103
|
16 |
|
if ($startPage !== null && $startPage !== 1) { |
|
104
|
3 |
|
return false; |
|
105
|
|
|
} |
|
106
|
|
|
|
|
107
|
14 |
|
if (!($query instanceof Orderable && $query instanceof Limitable && $query instanceof Whereable)) { |
|
108
|
2 |
|
return false; |
|
109
|
|
|
} |
|
110
|
|
|
|
|
111
|
13 |
|
$orders = $query->getOrders(); |
|
112
|
|
|
|
|
113
|
13 |
|
return empty($orders) || (count($orders) === 1 && isset($orders[$key])); |
|
|
|
|
|
|
114
|
|
|
} |
|
115
|
|
|
} |
|
116
|
|
|
|
b2pweb /
bdf-prime
Loading history...