blob: 05117a5c44c1afdcf33ab4a1c0b9ff686eff77f5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
<?php
namespace ipl\Orm;
use ArrayIterator;
use Iterator;
use Traversable;
class ResultSet implements Iterator
{
protected $cache;
/** @var bool Whether cache is disabled */
protected $isCacheDisabled = false;
protected $generator;
protected $limit;
protected $position;
public function __construct(Traversable $traversable, $limit = null)
{
$this->cache = new ArrayIterator();
$this->generator = $this->yieldTraversable($traversable);
$this->limit = $limit;
}
/**
* Create a new result set from the given query
*
* @param Query $query
*
* @return static
*/
public static function fromQuery(Query $query)
{
return new static($query->yieldResults(), $query->getLimit());
}
/**
* Do not cache query result
*
* ResultSet instance can only be iterated once
*
* @return $this
*/
public function disableCache()
{
$this->isCacheDisabled = true;
return $this;
}
public function hasMore()
{
return $this->generator->valid();
}
public function hasResult()
{
return $this->generator->valid();
}
#[\ReturnTypeWillChange]
public function current()
{
if ($this->position === null) {
$this->advance();
}
return $this->isCacheDisabled ? $this->generator->current() : $this->cache->current();
}
public function next(): void
{
if (! $this->isCacheDisabled) {
$this->cache->next();
}
if ($this->isCacheDisabled || ! $this->cache->valid()) {
$this->generator->next();
$this->advance();
} else {
$this->position += 1;
}
}
public function key(): int
{
if ($this->position === null) {
$this->advance();
}
return $this->isCacheDisabled ? $this->generator->key() : $this->cache->key();
}
public function valid(): bool
{
if ($this->limit !== null && $this->position === $this->limit) {
return false;
}
return $this->cache->valid() || $this->generator->valid();
}
public function rewind(): void
{
if (! $this->isCacheDisabled) {
$this->cache->rewind();
}
if ($this->position === null) {
$this->advance();
} else {
$this->position = 0;
}
}
protected function advance()
{
if (! $this->generator->valid()) {
return;
}
if (! $this->isCacheDisabled) {
$this->cache[$this->generator->key()] = $this->generator->current();
// Only required on PHP 5.6, 7+ does it automatically
$this->cache->seek($this->generator->key());
}
if ($this->position === null) {
$this->position = 0;
} else {
$this->position += 1;
}
}
protected function yieldTraversable(Traversable $traversable)
{
foreach ($traversable as $key => $value) {
yield $key => $value;
}
}
}
|
