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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\mutex;
use yii\base\InvalidConfigException;
use yii\db\Connection;
use yii\di\Instance;
/**
* DbMutex is the base class for classes, which relies on database while implementing mutex "lock" mechanism.
*
* @see Mutex
*
* @author resurtm <resurtm@gmail.com>
* @since 2.0
*/
abstract class DbMutex extends Mutex
{
/**
* @var Connection|array|string the DB connection object or the application component ID of the DB connection.
* After the Mutex object is created, if you want to change this property, you should only assign
* it with a DB connection object.
* Starting from version 2.0.2, this can also be a configuration array for creating the object.
*/
public $db = 'db';
/**
* Initializes generic database table based mutex implementation.
* @throws InvalidConfigException if [[db]] is invalid.
*/
public function init()
{
parent::init();
$this->db = Instance::ensure($this->db, Connection::className());
}
}