public function addFilterConstraint(ClassMetadata $targetEntity, $targetTableAlias)
    {
        // 決済処理中/購入処理中を除く.
        if ($targetEntity->reflClass->getName() === 'Eccube\Entity\Order') {
            return $targetTableAlias . '.status <> 8';
        }

        // 決済処理中/購入処理中を除く.
        if ($targetEntity->reflClass->getName() === 'Eccube\Entity\Master\OrderStatus') {
            return $targetTableAlias . '.id <> 8';
        }

        return '';
    }