|
1
|
|
|
<?php |
|
2
|
|
|
declare(strict_types = 1); |
|
3
|
|
|
|
|
4
|
|
|
namespace TBolier\RethinkQL\Response; |
|
5
|
|
|
|
|
6
|
|
|
use TBolier\RethinkQL\Connection\ConnectionCursorInterface; |
|
7
|
|
|
use TBolier\RethinkQL\Connection\ConnectionException; |
|
8
|
|
|
use TBolier\RethinkQL\Message\MessageInterface; |
|
9
|
|
|
use TBolier\RethinkQL\Types\Response\ResponseType; |
|
10
|
|
|
|
|
11
|
|
|
class Cursor implements \Iterator, \Countable |
|
12
|
|
|
{ |
|
13
|
|
|
/** |
|
14
|
|
|
* @var ConnectionCursorInterface |
|
15
|
|
|
*/ |
|
16
|
|
|
private $connection; |
|
17
|
|
|
/** |
|
18
|
|
|
* @var int |
|
19
|
|
|
*/ |
|
20
|
|
|
private $index; |
|
21
|
|
|
/** |
|
22
|
|
|
* @var bool |
|
23
|
|
|
*/ |
|
24
|
|
|
private $isComplete; |
|
25
|
|
|
/** |
|
26
|
|
|
* @var MessageInterface |
|
27
|
|
|
*/ |
|
28
|
|
|
private $message; |
|
29
|
|
|
/** |
|
30
|
|
|
* @var ResponseInterface |
|
31
|
|
|
*/ |
|
32
|
|
|
private $response; |
|
33
|
|
|
/** |
|
34
|
|
|
* @var int |
|
35
|
|
|
*/ |
|
36
|
|
|
private $size; |
|
37
|
|
|
/** |
|
38
|
|
|
* @var int |
|
39
|
|
|
*/ |
|
40
|
|
|
private $token; |
|
41
|
|
|
|
|
42
|
|
|
/** |
|
43
|
|
|
* @param ConnectionCursorInterface $connection |
|
44
|
|
|
* @param int $token |
|
45
|
|
|
* @param ResponseInterface $response |
|
46
|
|
|
* @param MessageInterface $message |
|
47
|
|
|
*/ |
|
48
|
3 |
|
public function __construct( |
|
49
|
|
|
ConnectionCursorInterface $connection, |
|
50
|
|
|
int $token, |
|
51
|
|
|
ResponseInterface $response, |
|
52
|
|
|
MessageInterface $message |
|
53
|
|
|
) { |
|
54
|
3 |
|
$this->connection = $connection; |
|
55
|
3 |
|
$this->token = $token; |
|
56
|
3 |
|
$this->addResponse($response); |
|
57
|
3 |
|
$this->message = $message; |
|
58
|
3 |
|
} |
|
59
|
|
|
|
|
60
|
|
|
/** |
|
61
|
|
|
* @inheritdoc |
|
62
|
|
|
* @throws \Exception |
|
63
|
|
|
*/ |
|
64
|
1 |
|
public function current() |
|
65
|
|
|
{ |
|
66
|
1 |
|
$this->seek(); |
|
67
|
|
|
|
|
68
|
1 |
|
if (!$this->valid()) { |
|
69
|
|
|
return; |
|
70
|
|
|
} |
|
71
|
|
|
|
|
72
|
1 |
|
if ($this->response->isAtomic()) { |
|
73
|
1 |
|
return $this->response->getData(); |
|
74
|
|
|
} |
|
75
|
|
|
|
|
76
|
|
|
return $this->response->getData()[$this->index]; |
|
77
|
|
|
} |
|
78
|
|
|
|
|
79
|
|
|
/** |
|
80
|
|
|
* @inheritdoc |
|
81
|
|
|
* @throws \Exception |
|
82
|
|
|
*/ |
|
83
|
|
|
public function next(): void |
|
84
|
|
|
{ |
|
85
|
|
|
$this->index++; |
|
86
|
|
|
|
|
87
|
|
|
$this->seek(); |
|
88
|
|
|
} |
|
89
|
|
|
|
|
90
|
|
|
/** |
|
91
|
|
|
* @inheritdoc |
|
92
|
|
|
*/ |
|
93
|
|
|
public function key(): int |
|
94
|
|
|
{ |
|
95
|
|
|
return $this->index; |
|
96
|
|
|
} |
|
97
|
|
|
|
|
98
|
|
|
/** |
|
99
|
|
|
* @inheritdoc |
|
100
|
|
|
*/ |
|
101
|
1 |
|
public function valid(): bool |
|
102
|
|
|
{ |
|
103
|
1 |
|
return (!$this->isComplete || ($this->index < $this->size)); |
|
104
|
|
|
} |
|
105
|
|
|
|
|
106
|
|
|
/** |
|
107
|
|
|
* @inheritdoc |
|
108
|
|
|
* @throws ConnectionException |
|
109
|
|
|
*/ |
|
110
|
|
|
public function rewind(): void |
|
111
|
|
|
{ |
|
112
|
|
|
$this->close(); |
|
113
|
|
|
|
|
114
|
|
|
$this->addResponse($this->connection->rewindFromCursor($this->message)); |
|
115
|
|
|
} |
|
116
|
|
|
|
|
117
|
|
|
/** |
|
118
|
|
|
* @inheritdoc |
|
119
|
|
|
*/ |
|
120
|
3 |
|
public function count() |
|
121
|
|
|
{ |
|
122
|
3 |
|
return $this->size; |
|
123
|
3 |
|
} |
|
124
|
3 |
|
|
|
125
|
3 |
|
/** |
|
126
|
3 |
|
* @param ResponseInterface $response |
|
127
|
|
|
*/ |
|
128
|
|
|
private function addResponse(ResponseInterface $response) |
|
129
|
|
|
{ |
|
130
|
|
|
$this->index = 0; |
|
131
|
|
|
$this->isComplete = $response->getType() === ResponseType::SUCCESS_SEQUENCE; |
|
132
|
1 |
|
$this->size = $response->isAtomic() ? 1 : \count($response->getData()); |
|
133
|
|
|
$this->response = $response; |
|
134
|
1 |
|
} |
|
135
|
|
|
|
|
136
|
|
|
/** |
|
137
|
|
|
* @return void |
|
138
|
|
|
* @throws \Exception |
|
139
|
|
|
*/ |
|
140
|
|
|
private function seek(): void |
|
141
|
1 |
|
{ |
|
142
|
|
|
while ($this->index === $this->size) { |
|
143
|
|
|
if ($this->isComplete) { |
|
144
|
|
|
return; |
|
145
|
|
|
} |
|
146
|
|
|
|
|
147
|
|
|
$this->request(); |
|
148
|
|
|
} |
|
149
|
|
|
} |
|
150
|
|
|
|
|
151
|
|
|
/** |
|
152
|
|
|
* @return void |
|
153
|
|
|
* @throws \Exception |
|
154
|
|
|
*/ |
|
155
|
|
|
private function request(): void |
|
156
|
|
|
{ |
|
157
|
|
|
try { |
|
158
|
|
|
$response = $this->connection->continueQuery($this->token); |
|
159
|
|
|
$this->addResponse($response); |
|
160
|
|
|
} catch (\Exception $e) { |
|
161
|
|
|
$this->isComplete = true; |
|
162
|
|
|
$this->close(); |
|
163
|
|
|
|
|
164
|
|
|
throw $e; |
|
165
|
|
|
} |
|
166
|
|
|
} |
|
167
|
|
|
|
|
168
|
|
|
/** |
|
169
|
|
|
* @return void |
|
170
|
|
|
*/ |
|
171
|
|
|
private function close(): void |
|
172
|
|
|
{ |
|
173
|
|
|
if (!$this->isComplete) { |
|
174
|
|
|
$this->connection->stopQuery($this->token); |
|
175
|
|
|
$this->isComplete = true; |
|
176
|
|
|
} |
|
177
|
|
|
|
|
178
|
|
|
$this->index = 0; |
|
179
|
|
|
$this->size = 0; |
|
180
|
|
|
$this->response = null; |
|
181
|
|
|
} |
|
182
|
|
|
} |
|
183
|
|
|
|
tbolier /
php-rethink-ql
