|
1
|
|
|
<?php |
|
2
|
|
|
namespace izzum\statemachine\persistence; |
|
3
|
|
|
use izzum\statemachine\Identifier; |
|
4
|
|
|
use izzum\statemachine\State; |
|
5
|
|
|
|
|
6
|
|
|
/** |
|
7
|
|
|
* the Session persistence adapter uses php sessions for persistence. |
|
8
|
|
|
* |
|
9
|
|
|
* Keep in mind that: |
|
10
|
|
|
* - php sessions have a limited lifetime. |
|
11
|
|
|
* - php sessions itself can have a different backend adapter, configurable. |
|
12
|
|
|
* - php sessions are only valid for one user's session (unless a session id is |
|
13
|
|
|
* forced) |
|
14
|
|
|
* |
|
15
|
|
|
* A simple adapter for a proof of concept and an example. |
|
16
|
|
|
* it's possible to use this adapter for for instance gui wizards. |
|
17
|
|
|
* |
|
18
|
|
|
* see also the /examples/session for how to use this adapter. |
|
19
|
|
|
* |
|
20
|
|
|
* TRICKY: make sure output is not already sent when instantiating this adapter. |
|
21
|
|
|
* |
|
22
|
|
|
* @author Rolf Vreijdenberger |
|
23
|
|
|
*/ |
|
24
|
|
|
class Session extends Adapter { |
|
25
|
|
|
/** |
|
26
|
|
|
* the namespace of the session |
|
27
|
|
|
* |
|
28
|
|
|
* @var string |
|
29
|
|
|
*/ |
|
30
|
|
|
private $namespace; |
|
31
|
|
|
|
|
32
|
|
|
/** |
|
33
|
|
|
* |
|
34
|
|
|
* @param string $namespace |
|
35
|
|
|
* optional, defaults to izzum |
|
36
|
|
|
* @param string $session_id |
|
37
|
|
|
* optional force a session id, used for testing purposes |
|
38
|
|
|
*/ |
|
39
|
|
|
public function __construct($namespace = 'izzum', $session_id = null) |
|
|
|
|
|
|
40
|
|
|
{ |
|
41
|
|
|
if (session_status() === PHP_SESSION_NONE) { |
|
42
|
|
|
if ($session_id !== null) { |
|
43
|
|
|
session_id($session_id); |
|
44
|
|
|
} |
|
45
|
|
|
session_start(); |
|
46
|
|
|
} |
|
47
|
|
|
$this->namespace = $namespace; |
|
48
|
|
|
if (!isset($_SESSION)) { |
|
49
|
|
|
$_SESSION = array(); |
|
50
|
|
|
} |
|
51
|
|
|
if (!isset($_SESSION [$this->namespace])) { |
|
52
|
|
|
$_SESSION [$this->namespace] = array(); |
|
53
|
|
|
} |
|
54
|
|
|
} |
|
55
|
|
|
|
|
56
|
|
|
|
|
57
|
|
|
/** |
|
58
|
|
|
* {@inheritDoc} |
|
59
|
|
|
*/ |
|
60
|
|
|
public function processGetState(Identifier $identifier) |
|
|
|
|
|
|
61
|
|
|
{ |
|
62
|
|
|
$key = $identifier->getId(); |
|
63
|
|
|
if (isset($_SESSION [$this->namespace] [$key])) { |
|
64
|
|
|
$state = $_SESSION [$this->namespace] [$key]->state; |
|
65
|
|
|
} else { |
|
66
|
|
|
$state = State::STATE_UNKNOWN; |
|
67
|
|
|
} |
|
68
|
|
|
return $state; |
|
69
|
|
|
} |
|
70
|
|
|
|
|
71
|
|
|
|
|
72
|
|
|
/** |
|
73
|
|
|
* {@inheritDoc} |
|
74
|
|
|
*/ |
|
75
|
|
|
protected function insertState(Identifier $identifier, $state, $message = null) |
|
|
|
|
|
|
76
|
|
|
{ |
|
77
|
|
|
// set object on the session |
|
78
|
|
|
$data = new StorageData($identifier, $state, $message); |
|
79
|
|
|
$key = $identifier->getId(); |
|
80
|
|
|
$_SESSION [$this->namespace] [$key] = $data; |
|
81
|
|
|
} |
|
82
|
|
|
|
|
83
|
|
|
/** |
|
84
|
|
|
* {@inheritDoc} |
|
85
|
|
|
*/ |
|
86
|
|
|
protected function updateState(Identifier $identifier, $state, $message = null) |
|
|
|
|
|
|
87
|
|
|
{ |
|
88
|
|
|
// set object on the session |
|
89
|
|
|
$data = new StorageData($identifier, $state, $message); |
|
90
|
|
|
$key = $identifier->getId(); |
|
91
|
|
|
$_SESSION [$this->namespace] [$key] = $data; |
|
92
|
|
|
} |
|
93
|
|
|
|
|
94
|
|
|
/** |
|
95
|
|
|
* {@inheritDoc} |
|
96
|
|
|
*/ |
|
97
|
|
|
public function isPersisted(Identifier $identifier) |
|
|
|
|
|
|
98
|
|
|
{ |
|
99
|
|
|
$key = $identifier->getId(); |
|
100
|
|
|
if (!isset($_SESSION [$this->namespace] [$key])) { |
|
101
|
|
|
return false; |
|
102
|
|
|
} |
|
103
|
|
|
return true; |
|
104
|
|
|
} |
|
105
|
|
|
|
|
106
|
|
|
/** |
|
107
|
|
|
* {@inheritDoc} |
|
108
|
|
|
*/ |
|
109
|
|
|
public function getEntityIds($machine, $state = null) |
|
|
|
|
|
|
110
|
|
|
{ |
|
111
|
|
|
$ids = array(); |
|
112
|
|
|
foreach ($_SESSION [$this->namespace] as $key => $storage) { |
|
113
|
|
|
if (strstr($key, $machine)) { |
|
114
|
|
|
if ($state) { |
|
115
|
|
|
if ($storage->state === $state) { |
|
116
|
|
|
$ids [] = $storage->id; |
|
117
|
|
|
} |
|
118
|
|
|
} else { |
|
119
|
|
|
$ids [] = $storage->id; |
|
120
|
|
|
} |
|
121
|
|
|
} |
|
122
|
|
|
} |
|
123
|
|
|
return $ids; |
|
124
|
|
|
} |
|
125
|
|
|
} |
|
126
|
|
|
|
Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: