XoopsCacheModelHandler
last analyzed

Complexity

Total Complexity 0

Size/Duplication

Total Lines 5
Duplicated Lines 0 %

Importance

Changes 0
Metric Value
wmc 0
eloc 4
dl 0
loc 5
c 0
b 0
f 0
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<?php
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/*
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 You may not change or alter any portion of this comment or credits
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 of supporting developers from this source code or any supporting source code
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 which is considered copyrighted (c) material of the original comment or credit authors.
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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.
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*/
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/**
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 * Cache engine For XOOPS
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 *
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 * You may not change or alter any portion of this comment or credits
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 * of supporting developers from this source code or any supporting source code
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 * which is considered copyrighted (c) material of the original comment or credit authors.
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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.
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 *
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 * @copyright       (c) 2000-2025 XOOPS Project (https://xoops.org)
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 * @license             GNU GPL 2 (https://www.gnu.org/licenses/gpl-2.0.html)
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 * @package             class
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 * @subpackage          cache
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 * @since               2.3.0
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 * @author              Taiwen Jiang <[email protected]>
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 */
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defined('XOOPS_ROOT_PATH') || exit('Restricted access');
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/**
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 * Database Storage engine for cache
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 *
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 *
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 * PHP versions 4 and 5
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 *
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 * CakePHP(tm) :  Rapid Development Framework <https://www.cakephp.org/>
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 * Copyright 2005-2008, Cake Software Foundation, Inc.
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 *                                     1785 E. Sahara Avenue, Suite 490-204
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 *                                     Las Vegas, Nevada 89104
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 *
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 * Licensed under The MIT License
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 * Redistributions of files must retain the above copyright notice.
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 *
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 * @filesource
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 * @copyright  Copyright 2005-2008, Cake Software Foundation, Inc.
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 * @link       https://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
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 * @package    cake
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 * @subpackage cake.cake.libs.cache
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 * @since      CakePHP(tm) v 1.2.0.4933
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 * @license    https://www.opensource.org/licenses/mit-license.php The MIT License
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 */
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/**
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 * Database Storage engine for cache
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 *
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 * @package    cake
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 * @subpackage cake.cake.libs.cache
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 */
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class XoopsCacheModel extends XoopsCacheEngine
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{
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    /**
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     * settings
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     *              className = name of the model to use, default => Cache
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     *              fields = database fields that hold data and ttl, default => data, expires
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     *
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     * @var array
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     * @access public
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     */
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    public $settings = [];
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    /**
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     * Model instance.
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     *
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     * @var object
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     * @access private
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     */
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    public $model;
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    /**
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     * Model instance.
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     *
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     * @var object
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     * @access private
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     */
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    public $fields = [];
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    /**
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     * Initialize the Cache Engine
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     *
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     * Called automatically by the cache frontend
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     * To reinitialize the settings call Cache::engine('EngineName', [optional] settings = array());
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     *
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     * @param  array $settings array of setting for the engine
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     * @return boolean True if the engine has been successfully initialized, false if not
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     * @access   public
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     */
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    public function init($settings = [])
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    {
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        $xoopsDB = XoopsDatabaseFactory::getDatabaseConnection();
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        parent::init($settings);
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        $defaults       = ['fields' => ['data', 'expires']];
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        $this->settings = array_merge($defaults, $this->settings);
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        $this->fields   = $this->settings['fields'];
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        $this->model    = new XoopsCacheModelHandler($xoopsDB);
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        return true;
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    }
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    /**
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     * Garbage collection. Permanently remove all expired and deleted data
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     *
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     * @access public
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     */
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    public function gc()
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    {
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        return $this->model->deleteAll(new Criteria($this->fields[1], time(), '<= '));
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    }
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    /**
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     * Write data for key into cache
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     *
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     * @param  string  $key      Identifier for the data
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     * @param  mixed   $value     Data to be cached
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     * @param  integer $duration How long to cache the data, in seconds
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     * @return boolean True if the data was successfully cached, false on failure
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     * @access public
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     */
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    public function write($key, $value, $duration = null)
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    {
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        // if (isset($this->settings['serialize'])) {
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        $value = serialize($value);
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        // }
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        if (!$value) {
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            return false;
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        }
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        $cache_obj = $this->model->create();
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        $cache_obj->setVar($this->model->keyname, $key);
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        $cache_obj->setVar($this->fields[0], $value);
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        $cache_obj->setVar($this->fields[1], time() + $duration);
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        return $this->model->insert($cache_obj);
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    }
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    /**
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     * Read a key from the cache
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     *
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     * @param  string $key Identifier for the data
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     * @return mixed  The cached data, or false if the data doesn't exist, has expired, or if there was an error fetching it
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     * @access public
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     */
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    public function read($key)
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    {
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        $criteria = new CriteriaCompo(new Criteria($this->model->keyname, $key));
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        $criteria->add(new Criteria($this->fields[1], time(), '>'));
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        $criteria->setLimit(1);
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        $data = $this->model->getAll($criteria);
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        if (!$data) {
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            return null;
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        }
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        return unserialize($data[0]);
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    }
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    /**
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     * Delete a key from the cache
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     *
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     * @param  string $key Identifier for the data
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     * @return boolean True if the value was successfully deleted, false if it didn't exist or couldn't be removed
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     * @access public
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     */
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    public function delete($key)
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    {
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        return $this->model->delete($key);
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    }
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    /**
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     * Delete all keys from the cache
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     *
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     * @return boolean True if the cache was successfully cleared, false otherwise
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     * @access public
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     */
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    public function clear($check = null)
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    {
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        return $this->model->deleteAll();
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    }
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}
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/**
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 * XoopsCacheModelObject
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 *
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 * @package
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 * @author              John
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 * @copyright       (c) 2000-2025 XOOPS Project (https://xoops.org)
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 * @access              public
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 */
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class XoopsCacheModelObject extends XoopsObject
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{
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    //PHP 8.2 Dynamic properties deprecated
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    public $key;
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    public $data;
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    public $expires;
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    /**
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     * Constructor
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     */
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    public function __construct()
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    {
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        parent::__construct();
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        $this->initVar('key', XOBJ_DTYPE_TXTBOX);
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        $this->initVar('data', XOBJ_DTYPE_SOURCE);
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        $this->initVar('expires', XOBJ_DTYPE_INT);
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    }
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}
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/**
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 * XoopsCacheModelHandler
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 *
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 * @package
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 * @author              John
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 * @copyright       (c) 2000-2025 XOOPS Project (https://xoops.org)
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 * @access              public
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 */
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class XoopsCacheModelHandler extends XoopsPersistableObjectHandler
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{
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    public const TABLE     = 'cache_model';
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    public const CLASSNAME = 'XoopsCacheModelObject';
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    public const KEYNAME   = 'key';
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}
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