model.php

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<?php
defined('XOOPS_ROOT_PATH') or die('Restricted access');

class XoopsCacheModel extends XoopsCacheEngine
{
    var $settings = array();

    var $model = null;

    var $fields = array();

    function init($settings)
    {
        $xoopsDB =& XoopsDatabaseFactory::getDatabaseConnection();

        parent::init($settings);
        $defaults = array('fields' => array('data' , 'expires'));
        $this->settings = array_merge($defaults, $this->settings);
        $this->fields = $this->settings['fields'];
        $this->model = new XoopsCacheModelHandler($xoopsDB);
        return true;
    }

    function gc()
    {
        return $this->model->deleteAll(new Criteria($this->fields[1], time, '<= '));
    }

    function write($key, $data, $duration)
    {
        // if (isset($this->settings['serialize'])) {
        $data = serialize($data);
        // }
        if (! $data) {
            return false;
        }
        $cache_obj = $this->model->create();
        $cache_obj->setVar($this->model::KEYNAME, $key);
        $cache_obj->setVar($this->fields[0], $data);
        $cache_obj->setVar($this->fields[1], time() + $duration);
        return $this->model->insert($cache_obj);
    }

    function read($key)
    {
        $criteria = new CriteriaCompo(new Criteria($this->model::KEYNAME, $key));
        $criteria->add(new Criteria($this->fields[1], time(), ">"));
        $criteria->setLimit(1);
        $data = $this->model->getAll($criteria);
        if (!$data) {
            return null;
        }
        return unserialize($data[0]);
    }

    function delete($key)
    {
        return $this->model->delete($key);
    }

    function clear()
    {
        return $this->model->deleteAll();
    }
}

class XoopsCacheModelObject extends XoopsObject
{
    function XoopsCacheModelObject()
    {
        $this->__construct();
    }

    function __construct()
    {
        parent::__construct();
        $this->initVar('key', XOBJ_DTYPE_TXTBOX);
        $this->initVar('data', XOBJ_DTYPE_SOURCE);
        $this->initVar('expires', XOBJ_DTYPE_INT);
    }
}

class XoopsCacheModelHandler extends XoopsPersistableObjectHandler
{
    const TABLE = 'cache_model';
    const CLASSNAME = 'XoopsCacheModelObject';
    const KEYNAME = 'key';
}

?>