<?php
/* $Id$ */
namespace Mammut\DB\Sql\Expression;

(defined('MAMMUT') && (basename(__FILE__) != basename($_SERVER['PHP_SELF']))) or die('ACCESS DENIED');

use InvalidArgumentException;
use Mammut\DB\Sql\Dialect\iDialect;

/**
 * IS NULL operator
 *
 * @author Stefan Daurer <s.daurer@q-spot.org>
 * @package Mammut\DB\Sql
 */
class IsNull extends \Mammut\StrictObject implements iExprBool {
	use WithTarget;
	
	public function __construct($target = null) {
		if($target)
			$this->setTarget($target);
	}

}