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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 | */ |
21 | |
22 | namespace oat\tao\model\state; |
23 | |
24 | /** |
25 | * Persistence for the item delivery service |
26 | */ |
27 | interface StateStorage |
28 | { |
29 | public const SERVICE_ID = 'tao/stateStorage'; |
30 | |
31 | /** |
32 | * Store the state of the service call |
33 | * |
34 | * @param string $userId |
35 | * @param string $callId |
36 | * @param string $data |
37 | * @return boolean |
38 | */ |
39 | public function set($userId, $callId, $data); |
40 | |
41 | /** |
42 | * Retore the state of the service call |
43 | * Returns null if no state is found |
44 | * |
45 | * @param string $userId |
46 | * @param string $callId |
47 | * @return string |
48 | */ |
49 | public function get($userId, $callId); |
50 | |
51 | /** |
52 | * Whenever or not a state for this service call exists |
53 | * |
54 | * @param string $userId |
55 | * @param string $callId |
56 | * @return boolean |
57 | */ |
58 | public function has($userId, $callId); |
59 | |
60 | /** |
61 | * Remove the state for this service call |
62 | * |
63 | * @param string $userId |
64 | * @param string $callId |
65 | * @return boolean |
66 | */ |
67 | public function del($userId, $callId); |
68 | } |