32 lines
1.0 KiB
Java
32 lines
1.0 KiB
Java
package adapter;
|
|
|
|
/**
|
|
* The Client — uses only the PaymentGateway interface.
|
|
* It has no idea whether it's talking to Stripe, PayPal, or Braintree.
|
|
* This is the point: the client is completely isolated from the vendor.
|
|
*/
|
|
public class OrderService {
|
|
|
|
private final PaymentGateway gateway;
|
|
|
|
// Receives a PaymentGateway — could be Stripe, PayPal, anything
|
|
public OrderService(PaymentGateway gateway) {
|
|
this.gateway = gateway;
|
|
}
|
|
|
|
public void processOrder(String orderId, String customerId, double total) {
|
|
System.out.printf("%nProcessing order %s for customer %s, total: $%.2f%n",
|
|
orderId, customerId, total);
|
|
|
|
boolean charged = gateway.charge(customerId, total, "USD");
|
|
|
|
if (charged) {
|
|
System.out.println("Payment accepted. Order confirmed.");
|
|
String status = gateway.getStatus("ch_" + orderId);
|
|
System.out.println("Transaction status: " + status);
|
|
} else {
|
|
System.out.println("Payment failed. Order rejected.");
|
|
}
|
|
}
|
|
}
|