1: <?php
 2: 
 3: /**
 4:  * This file is part of the Nette Framework (https://nette.org)
 5:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
 6:  */
 7: 
 8: namespace Nette\Caching\Storages;
 9: 
10: use Nette;
11: 
12: 
13: /**
14:  * Memory cache storage.
15:  *
16:  * @author     David Grudl
17:  */
18: class MemoryStorage extends Nette\Object implements Nette\Caching\IStorage
19: {
20:     /** @var array */
21:     private $data = array();
22: 
23: 
24:     /**
25:      * Read from cache.
26:      * @param  string key
27:      * @return mixed|NULL
28:      */
29:     public function read($key)
30:     {
31:         return isset($this->data[$key]) ? $this->data[$key] : NULL;
32:     }
33: 
34: 
35:     /**
36:      * Prevents item reading and writing. Lock is released by write() or remove().
37:      * @param  string key
38:      * @return void
39:      */
40:     public function lock($key)
41:     {
42:     }
43: 
44: 
45:     /**
46:      * Writes item into the cache.
47:      * @param  string key
48:      * @param  mixed  data
49:      * @param  array  dependencies
50:      * @return void
51:      */
52:     public function write($key, $data, array $dependencies)
53:     {
54:         $this->data[$key] = $data;
55:     }
56: 
57: 
58:     /**
59:      * Removes item from the cache.
60:      * @param  string key
61:      * @return void
62:      */
63:     public function remove($key)
64:     {
65:         unset($this->data[$key]);
66:     }
67: 
68: 
69:     /**
70:      * Removes items from the cache by conditions & garbage collector.
71:      * @param  array  conditions
72:      * @return void
73:      */
74:     public function clean(array $conditions)
75:     {
76:         if (!empty($conditions[Nette\Caching\Cache::ALL])) {
77:             $this->data = array();
78:         }
79:     }
80: 
81: }
82: