93 lines
2.5 KiB
PHP
93 lines
2.5 KiB
PHP
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<?php
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/**
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; under version 2
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* of the License (non-upgradable).
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright (c) 2017 (original work) Open Assessment Technologies SA;
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*
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*
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*/
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/**
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* Class common_persistence_InMemoryKvDriver
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* @author Aleh Hutnikau, <hutnikau@1pt.com>
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*/
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class common_persistence_InMemoryKvDriver implements common_persistence_KvDriver, common_persistence_Purgable
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{
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/**
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* @var array
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*/
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protected $persistence = [];
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/**
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*
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* @see common_persistence_Driver::connect()
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*/
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function connect($id, array $params)
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{
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return new common_persistence_KeyValuePersistence($params, $this);
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}
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public function set($id, $value, $ttl = null, $nx = false)
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{
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$this->persistence[$id] = $value;
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return true;
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}
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public function get($id)
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{
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return $this->exists($id) ? $this->persistence[$id] : false;
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}
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public function exists($id)
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{
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return array_key_exists($id, $this->persistence);
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}
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public function del($id)
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{
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unset($this->persistence[$id]);
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return true;
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}
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public function purge()
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{
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$this->persistence = [];
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return true;
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}
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public function incr($id)
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{
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if (!isset($this->persistence[$id])) {
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$this->persistence[$id] = 0;
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}
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if (!is_int($this->persistence[$id])) {
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throw new common_exception_InconsistentData('Cannot increment non intvalue for ' . $id);
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}
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return ++$this->persistence[$id];
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}
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public function decr($id)
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{
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if (!isset($this->persistence[$id])) {
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$this->persistence[$id] = 0;
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}
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if (!is_int($this->persistence[$id])) {
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throw new common_exception_InconsistentData('Cannot decrement non intvalue for ' . $id);
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}
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return --$this->persistence[$id];
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}
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}
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