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1 | <?php |
2 | |
3 | /** |
4 | * This program is free software; you can redistribute it and/or |
5 | * modify it under the terms of the GNU General Public License |
6 | * as published by the Free Software Foundation; under version 2 |
7 | * of the License (non-upgradable). |
8 | * |
9 | * This program is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 | * GNU General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write to the Free Software |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
17 | * |
18 | * Copyright (c) 2013 (original work) Open Assessment Technologies SA (under the project TAO-PRODUCT); |
19 | * |
20 | * @author Lionel Lecaque <lionel@taotesting.com> |
21 | * @license GPLv2 |
22 | * @package generis |
23 | |
24 | * |
25 | */ |
26 | |
27 | /** |
28 | * Interface of drivers that provide the Kay Value Persistence |
29 | * |
30 | * @author Joel Bout <joel@taotesting.com> |
31 | */ |
32 | interface common_persistence_KvDriver extends common_persistence_Driver |
33 | { |
34 | /** |
35 | * Stores a value, implementing time to live and nx is optional |
36 | * Should throw an exception if an option is not supported |
37 | * |
38 | * @param string $id |
39 | * @param string $value |
40 | * @param string $ttl time to live in seconds |
41 | * @param bool $nx Only set the key if it does not already exist |
42 | * @return bool |
43 | */ |
44 | public function set($id, $value, $ttl = null, $nx = false); |
45 | |
46 | /** |
47 | * Returns a value from storage |
48 | * or false if not found |
49 | * |
50 | * @param string $id |
51 | * @return string |
52 | */ |
53 | public function get($id); |
54 | |
55 | /** |
56 | * test whenever or not an entry exists |
57 | * |
58 | * @param string $id |
59 | * @return boolean |
60 | */ |
61 | public function exists($id); |
62 | |
63 | /** |
64 | * Remove an entry from storage |
65 | * |
66 | * @param string $id |
67 | * @return boolean |
68 | */ |
69 | public function del($id); |
70 | |
71 | /** |
72 | * Increment value |
73 | * |
74 | * @param string $id |
75 | * @return boolean |
76 | */ |
77 | public function incr($id); |
78 | |
79 | /** |
80 | * Decrement value |
81 | * @param $id |
82 | * @return boolean |
83 | */ |
84 | public function decr($id); |
85 | } |