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<?php
declare(strict_types=1);
namespace Doctrine\ORM\Query\AST;
/**
* NullComparisonExpression ::= (SingleValuedPathExpression | InputParameter) "IS" ["NOT"] "NULL"
*
* @link www.doctrine-project.org
*/
class NullComparisonExpression extends Node
{
/** @var bool */
public $not;
/** @var Node */
public $expression;
/** @param Node $expression */
public function __construct($expression, bool $not = false)
{
$this->expression = $expression;
$this->not = $not;
}
/**
* {@inheritdoc}
*/
public function dispatch($sqlWalker)
{
return $sqlWalker->walkNullComparisonExpression($this);
}
}
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