public function checkMailDeliverAvailable($productTypeId, &$objCartSession) 
{
	
	$available = false;
	
	// カート内の情報を取得
	$items = $objCartSession->getCartList($productTypeId);
	if (count(array_keys($items))) {
		$available = true;
		foreach (array_keys($items) as $key) {
			$item = & $items[$key];
			$product = & $item['productsClass'];
			if ($product['mail_deliver_enabled'] == MAIL_DELIVER_ENABLED) {
				continue;
			} else {
				$available = false;
			}
		}
	}
	return $available;
}

        // 配送業者を取得
        $mail_delivery_available = $objPurchase->checkMailDeliverAvailable($cart_key, $objCartSess);
        $this->arrDeliv = $objDelivery->getList($cart_key, $mail_delivery_available);
        $this->is_single_deliv = $this->isSingleDeliv($this->arrDeliv);