|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* components |
|
4
|
|
|
* |
|
5
|
|
|
* @author Wolfy-J |
|
6
|
|
|
*/ |
|
7
|
|
|
namespace Spiral\ORM; |
|
8
|
|
|
|
|
9
|
|
|
use Spiral\Models\EntityInterface; |
|
10
|
|
|
use Spiral\ORM\Exceptions\MapException; |
|
11
|
|
|
|
|
12
|
|
|
/** |
|
13
|
|
|
* Entity cache provides ability to access already retrieved entities from memory instead of |
|
14
|
|
|
* calling database. Attention, cache WILL BE isolated in a selection scope in order to prevent |
|
15
|
|
|
* data collision, ie: |
|
16
|
|
|
* |
|
17
|
|
|
* $user1 => $users->findOne(); |
|
18
|
|
|
* $user2 => $user->findOne(); |
|
19
|
|
|
* |
|
20
|
|
|
* assert($user1 !== $user2); |
|
21
|
|
|
*/ |
|
22
|
|
|
final class EntityMap |
|
23
|
|
|
{ |
|
24
|
|
|
/** |
|
25
|
|
|
* @var EntityInterface[] |
|
26
|
|
|
*/ |
|
27
|
|
|
private $entities = []; |
|
28
|
|
|
|
|
29
|
|
|
/** |
|
30
|
|
|
* Maximum entity cache size. Null is unlimited. |
|
31
|
|
|
* |
|
32
|
|
|
* @var int|null |
|
33
|
|
|
*/ |
|
34
|
|
|
private $maxSize = null; |
|
35
|
|
|
|
|
36
|
|
|
/** |
|
37
|
|
|
* @param int|null $maxSize Set to null to make cache size unlimited. |
|
38
|
|
|
*/ |
|
39
|
|
|
public function __construct(int $maxSize = null) |
|
40
|
|
|
{ |
|
41
|
|
|
$this->maxSize = $maxSize; |
|
42
|
|
|
} |
|
43
|
|
|
|
|
44
|
|
|
/** |
|
45
|
|
|
* Add Record to entity cache. Primary key value will be used as |
|
46
|
|
|
* identifier. |
|
47
|
|
|
* |
|
48
|
|
|
* Attention, existed entity will be replaced! |
|
49
|
|
|
* |
|
50
|
|
|
* @param RecordInterface $entity |
|
51
|
|
|
* @param bool $ignoreLimit Cache overflow will be ignored. |
|
52
|
|
|
* |
|
53
|
|
|
* @return RecordInterface Returns given entity. |
|
54
|
|
|
* |
|
55
|
|
|
* @throws MapException When cache size exceeded. |
|
56
|
|
|
*/ |
|
57
|
|
|
public function remember( |
|
58
|
|
|
RecordInterface $entity, |
|
59
|
|
|
$ignoreLimit = true |
|
60
|
|
|
): RecordInterface { |
|
61
|
|
|
if (!$ignoreLimit && count($this->entities) > $this->maxSize) { |
|
62
|
|
|
throw new MapException('Entity cache size exceeded'); |
|
63
|
|
|
} |
|
64
|
|
|
|
|
65
|
|
|
if (empty($entity->primaryKey())) { |
|
66
|
|
|
throw new MapException("Unable to store non identified entity " . get_class($entity)); |
|
67
|
|
|
} |
|
68
|
|
|
|
|
69
|
|
|
$cacheID = get_class($entity) . ':' . $entity->primaryKey(); |
|
70
|
|
|
|
|
71
|
|
|
return $this->entities[$cacheID] = $entity; |
|
72
|
|
|
} |
|
73
|
|
|
|
|
74
|
|
|
/** |
|
75
|
|
|
* Remove entity record from entity cache. Primary key value will be used as identifier. |
|
76
|
|
|
* |
|
77
|
|
|
* @param string $class |
|
78
|
|
|
* @param string $identity |
|
79
|
|
|
*/ |
|
80
|
|
|
public function forget(string $class, string $identity) |
|
81
|
|
|
{ |
|
82
|
|
|
unset($this->entities["{$class}:{$identity}"]); |
|
83
|
|
|
} |
|
84
|
|
|
|
|
85
|
|
|
/** |
|
86
|
|
|
* Check if desired entity was already cached. |
|
87
|
|
|
* |
|
88
|
|
|
* @param string $class |
|
89
|
|
|
* @param string $identity |
|
90
|
|
|
* |
|
91
|
|
|
* @return bool |
|
92
|
|
|
*/ |
|
93
|
|
|
public function has(string $class, string $identity): bool |
|
94
|
|
|
{ |
|
95
|
|
|
return isset($this->entities["{$class}:{$identity}"]); |
|
96
|
|
|
} |
|
97
|
|
|
|
|
98
|
|
|
/** |
|
99
|
|
|
* Fetch entity from cache. |
|
100
|
|
|
* |
|
101
|
|
|
* @param string $class |
|
102
|
|
|
* @param string $identity |
|
103
|
|
|
* |
|
104
|
|
|
* @return null|mixed |
|
105
|
|
|
*/ |
|
106
|
|
|
public function get(string $class, string $identity) |
|
107
|
|
|
{ |
|
108
|
|
|
if (empty($this->entities["{$class}:{$identity}"])) { |
|
109
|
|
|
return null; |
|
110
|
|
|
} |
|
111
|
|
|
|
|
112
|
|
|
return $this->entities[$class . ':' . $identity]; |
|
113
|
|
|
} |
|
114
|
|
|
|
|
115
|
|
|
/** |
|
116
|
|
|
* Flush content of entity cache. |
|
117
|
|
|
*/ |
|
118
|
|
|
public function flush() |
|
119
|
|
|
{ |
|
120
|
|
|
$this->entities = []; |
|
121
|
|
|
} |
|
122
|
|
|
|
|
123
|
|
|
/** |
|
124
|
|
|
* Destructing. |
|
125
|
|
|
*/ |
|
126
|
|
|
public function __destruct() |
|
127
|
|
|
{ |
|
128
|
|
|
$this->flush(); |
|
129
|
|
|
} |
|
130
|
|
|
} |
spiral /
components
