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<?php | |
/* | |
* This file is part of the Shieldon Simple Cache package. | |
* | |
* (c) Terry L. <contact@terryl.in> | |
* | |
* For the full copyright and license information, please view the LICENSE | |
* file that was distributed with this source code. | |
*/ | |
declare(strict_types=1); | |
namespace Shieldon\SimpleCache\Driver; | |
use Shieldon\SimpleCache\CacheProvider; | |
use PDO; | |
use function file_put_contents; | |
use function rtrim; | |
/** | |
* A cache driver class provided by SQLite database. | |
*/ | |
class Sqlite extends CacheProvider | |
{ | |
use SqlTrait; | |
/** | |
* The absolute path of the storage's directory. | |
* It must be writable. | |
* | |
* @var string | |
*/ | |
protected $storage = '/tmp/simple-cache'; | |
/** | |
* Constructor. | |
* | |
* @param array $setting The settings. | |
* | |
* @throws CacheException | |
*/ | |
public function __construct(array $setting = []) | |
{ | |
if (isset($setting['storage'])) { | |
$this->storage = rtrim($setting['storage'], '/'); | |
} | |
$this->assertDirectoryWritable($this->storage); | |
$this->db = new PDO('sqlite:' . $this->storage . '/cache.sqlite3'); | |
} | |
/** | |
* Delete all caches by an extended Cache Driver. | |
* | |
* @return bool | |
*/ | |
protected function doClear(): bool | |
{ | |
$sql = 'DELETE FROM ' . $this->table; | |
$query = $this->db->prepare($sql); | |
$result = $query->execute(); | |
return $result; | |
} | |
/** | |
* @inheritDoc | |
*/ | |
public function rebuild(): bool | |
{ | |
try { | |
$sql = "CREATE TABLE IF NOT EXISTS {$this->table} ( | |
cache_key VARCHAR(40) PRIMARY KEY, | |
cache_value LONGTEXT | |
);"; | |
$this->db->query($sql); | |
// @codeCoverageIgnoreStart | |
} catch (Exception $e) { | |
file_put_contents('php://stderr', $e->getMessage()); | |
return false; | |
} | |
// @codeCoverageIgnoreEnd | |
return true; | |
} | |
} |