framework/db/ExpressionInterface.php
<?php
/**
* @link https://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license https://www.yiiframework.com/license/
*/
namespace yii\db;
/**
* Interface ExpressionInterface should be used to mark classes, that should be built
* in a special way.
*
* The database abstraction layer of Yii framework supports objects that implement this
* interface and will use [[ExpressionBuilderInterface]] to build them.
*
* The default implementation is a class [[Expression]].
*
* @author Dmytro Naumenko <d.naumenko.a@gmail.com>
* @since 2.0.14
*/
interface ExpressionInterface
{
}