123 lines
2.2 KiB
PHP
123 lines
2.2 KiB
PHP
<?php
|
|
/**
|
|
* Ion
|
|
*
|
|
* Building blocks for web development
|
|
*
|
|
* PHP version 5.6
|
|
*
|
|
* @package Ion
|
|
* @author Timothy J. Warren <tim@timshomepage.net>
|
|
* @copyright 2015 - 2016 Timothy J. Warren
|
|
* @license http://www.opensource.org/licenses/mit-license.html MIT License
|
|
* @version 1.0.0
|
|
* @link https://git.timshomepage.net/timw4mail/ion
|
|
*/
|
|
|
|
namespace Aviat\Ion\Cache\Driver;
|
|
|
|
use Aviat\Ion\ConfigInterface;
|
|
use Aviat\Ion\Exception\ConfigException;
|
|
use Aviat\Ion\Model\DB;
|
|
|
|
/**
|
|
* Driver for caching via a traditional SQL database
|
|
*/
|
|
class SQLDriver extends DB implements DriverInterface {
|
|
|
|
use DriverTrait;
|
|
|
|
/**
|
|
* The query builder object
|
|
* @var object $db
|
|
*/
|
|
protected $db;
|
|
|
|
/**
|
|
* Create the driver object
|
|
*
|
|
* @param ConfigInterface $config
|
|
* @throws ConfigException
|
|
*/
|
|
public function __construct(ConfigInterface $config)
|
|
{
|
|
parent::__construct($config);
|
|
|
|
if ( ! array_key_exists('cache', $this->db_config))
|
|
{
|
|
throw new ConfigException("Missing '[cache]' section in database config.");
|
|
}
|
|
|
|
$this->db = \Query($this->db_config['cache']);
|
|
}
|
|
|
|
/**
|
|
* Retrieve a value from the cache backend
|
|
*
|
|
* @param string $key
|
|
* @return mixed
|
|
*/
|
|
public function get($key)
|
|
{
|
|
$query = $this->db->select('value')
|
|
->from('cache')
|
|
->where('key', $key)
|
|
->get();
|
|
|
|
$row = $query->fetch(\PDO::FETCH_ASSOC);
|
|
|
|
if (empty($row))
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
$serializedData = $row['value'];
|
|
return $this->unserialize($serializedData);
|
|
}
|
|
|
|
/**
|
|
* Set a cached value
|
|
*
|
|
* @param string $key
|
|
* @param mixed $value
|
|
* @return DriverInterface
|
|
*/
|
|
public function set($key, $value)
|
|
{
|
|
$serializedData = $this->serialize($value);
|
|
|
|
$this->db->set([
|
|
'key' => $key,
|
|
'value' => $serializedData,
|
|
]);
|
|
|
|
$this->db->insert('cache');
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Invalidate a cached value
|
|
*
|
|
* @param string $key
|
|
* @return DriverInterface
|
|
*/
|
|
public function invalidate($key)
|
|
{
|
|
$this->db->where('key', $key)
|
|
->delete('cache');
|
|
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* Clear the contents of the cache
|
|
*
|
|
* @return void
|
|
*/
|
|
public function invalidateAll()
|
|
{
|
|
$this->db->truncate('cache');
|
|
}
|
|
}
|
|
// End of SQLDriver.php
|