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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) 2017 (original work) Open Assessment Technologies SA; |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | class common_persistence_InMemoryAdvKvDriver extends common_persistence_InMemoryKvDriver implements |
| 23 | common_persistence_AdvKvDriver |
| 24 | { |
| 25 | public const HPREFIX = 'hPrfx_'; |
| 26 | |
| 27 | /** |
| 28 | * |
| 29 | * @see common_persistence_Driver::connect() |
| 30 | */ |
| 31 | public function connect($id, array $params) |
| 32 | { |
| 33 | return new \common_persistence_AdvKeyValuePersistence($params, $this); |
| 34 | } |
| 35 | |
| 36 | public function hmSet($key, $fields) |
| 37 | { |
| 38 | if (!is_array($fields)) { |
| 39 | return false; |
| 40 | } |
| 41 | foreach ($fields as $hashkey => $value) { |
| 42 | $this->persistence[$key][self::HPREFIX . $hashkey] = $value; |
| 43 | } |
| 44 | return true; |
| 45 | } |
| 46 | |
| 47 | public function hExists($key, $field) |
| 48 | { |
| 49 | return $this->hGet($key, $field) !== false; |
| 50 | } |
| 51 | |
| 52 | public function hSet($key, $field, $value) |
| 53 | { |
| 54 | $result = !isset($this->persistence[$key][self::HPREFIX . $field]); |
| 55 | $this->persistence[$key][self::HPREFIX . $field] = $value; |
| 56 | return $result; |
| 57 | } |
| 58 | |
| 59 | public function hGet($key, $field) |
| 60 | { |
| 61 | if ( |
| 62 | ! isset($this->persistence[$key]) |
| 63 | || ! isset($this->persistence[$key][self::HPREFIX . $field]) |
| 64 | ) { |
| 65 | return false; |
| 66 | } |
| 67 | |
| 68 | return $this->persistence[$key][self::HPREFIX . $field]; |
| 69 | } |
| 70 | |
| 71 | public function hDel($key, $field): bool |
| 72 | { |
| 73 | if (!isset($this->persistence[$key]) || !isset($this->persistence[$key][self::HPREFIX . $field])) { |
| 74 | return false; |
| 75 | } |
| 76 | unset($this->persistence[$key][self::HPREFIX . $field]); |
| 77 | |
| 78 | return true; |
| 79 | } |
| 80 | |
| 81 | public function hGetAll($key) |
| 82 | { |
| 83 | if (! isset($this->persistence[$key])) { |
| 84 | return []; |
| 85 | } |
| 86 | $data = []; |
| 87 | $prefixLength = strlen(self::HPREFIX); |
| 88 | foreach ($this->persistence[$key] as $hash => $attributes) { |
| 89 | if (mb_substr($hash, 0, $prefixLength) === self::HPREFIX) { |
| 90 | $data[mb_substr($hash, $prefixLength)] = $this->persistence[$key][$hash]; |
| 91 | } |
| 92 | } |
| 93 | return $data; |
| 94 | } |
| 95 | |
| 96 | public function keys($pattern) |
| 97 | { |
| 98 | if ($pattern == '*') { |
| 99 | return array_keys($this->persistence); |
| 100 | } |
| 101 | return []; |
| 102 | } |
| 103 | } |