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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) 2015 (original work) Open Assessment Technologies SA; |
19 | * |
20 | */ |
21 | |
22 | namespace oat\tao\model\lock; |
23 | |
24 | use core_kernel_classes_Resource; |
25 | |
26 | /** |
27 | * manage lock on a given resource |
28 | * |
29 | * @author plichart |
30 | */ |
31 | interface LockSystem |
32 | { |
33 | public const SERVICE_ID = 'tao/lock'; |
34 | |
35 | /** |
36 | * set a lock on @resource with owner @user, succeeds also if there is a lock already exists but with the same owner |
37 | * |
38 | * @throws ResourceLockedException if the resource already has a lock with a different owner |
39 | * @param core_kernel_classes_Resource $resource |
40 | * @param core_kernel_classes_Resource $user |
41 | */ |
42 | public function setLock(core_kernel_classes_Resource $resource, $ownerId); |
43 | |
44 | /** |
45 | * return true is the resource is locked, else otherwise |
46 | * @return boolean |
47 | */ |
48 | public function isLocked(core_kernel_classes_Resource $resource); |
49 | |
50 | /** |
51 | * release the lock if owned by @user |
52 | * @param core_kernel_classes_Resource $resource |
53 | * @param core_kernel_classes_Resource $user |
54 | * @throw common_Exception no lock to release |
55 | */ |
56 | public function releaseLock(core_kernel_classes_Resource $resource, $ownerId); |
57 | |
58 | /** |
59 | * release the lock |
60 | * @param core_kernel_classes_Resource $resource |
61 | * @throw common_Exception no lock to release |
62 | */ |
63 | public function forceReleaseLock(core_kernel_classes_Resource $resource); |
64 | |
65 | /** |
66 | * Return lock details or null if no lock found |
67 | * |
68 | * @param core_kernel_classes_Resource $resource |
69 | * @return Lock |
70 | */ |
71 | public function getLockData(core_kernel_classes_Resource $resource); |
72 | } |