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;
 9: 
10: use Nette;
11: 
12: 
13: /**
14:  * Cache storage.
15:  *
16:  * @author     David Grudl
17:  */
18: interface IStorage
19: {
20: 
21:     /**
22:      * Read from cache.
23:      * @param  string key
24:      * @return mixed|NULL
25:      */
26:     function read($key);
27: 
28:     /**
29:      * Prevents item reading and writing. Lock is released by write() or remove().
30:      * @param  string key
31:      * @return void
32:      */
33:     function lock($key);
34: 
35:     /**
36:      * Writes item into the cache.
37:      * @param  string key
38:      * @param  mixed  data
39:      * @param  array  dependencies
40:      * @return void
41:      */
42:     function write($key, $data, array $dependencies);
43: 
44:     /**
45:      * Removes item from the cache.
46:      * @param  string key
47:      * @return void
48:      */
49:     function remove($key);
50: 
51:     /**
52:      * Removes items from the cache by conditions.
53:      * @param  array  conditions
54:      * @return void
55:      */
56:     function clean(array $conditions);
57: 
58: }
59: