[java][booking][02_parameter_object] Introduce Customer parameter object

Author: rgomezcasas

examples/java/java-booking-02_introduce_parameter_object/src/main/java/tv/codely/booking/Booking.java

@@ -18,9 +18,7 @@ public final class Booking {
     public Booking(
         BookingId id,
         DateRange bookingDateRange,
-        CustomerId customerId,
-        CustomerName customerName,
-        EmailAddress customerEmail,
+        Customer customer,
         BookingType bookingType,
         DiscountType discountType,
         DiscountValue discountValue,
@@ -30,9 +28,9 @@ public Booking(
         this.id            = id;
         this.startDate     = bookingDateRange.startDate();
         this.endDate       = bookingDateRange.endDate();
-        this.customerId    = customerId;
-        this.customerName  = customerName;
-        this.customerEmail = customerEmail;
+        this.customerId    = customer.id();
+        this.customerName  = customer.name();
+        this.customerEmail = customer.emailAddress();
         this.bookingType   = bookingType;
         this.discountType  = discountType;
         this.discountValue = discountValue;

examples/java/java-booking-02_introduce_parameter_object/src/main/java/tv/codely/booking/Customer.java

@@ -0,0 +1,25 @@
+package tv.codely.booking;
+
+public final class Customer {
+    private final CustomerId   id;
+    private final CustomerName name;
+    private final EmailAddress emailAddress;
+
+    public Customer(CustomerId id, CustomerName name, EmailAddress emailAddress) {
+        this.id           = id;
+        this.name         = name;
+        this.emailAddress = emailAddress;
+    }
+
+    public CustomerId id() {
+        return id;
+    }
+
+    public CustomerName name() {
+        return name;
+    }
+
+    public EmailAddress emailAddress() {
+        return emailAddress;
+    }
+}

examples/java/java-booking-02_introduce_parameter_object/src/test/java/tv/codely/booking/BookingShould.java

@@ -17,9 +17,11 @@ void get_the_correct_status_when_the_booking_has_not_started_yet() {
         var booking = new Booking(
             new BookingId("2c1e34d0-1430-4307-80bf-a71761f71390"),
             new DateRange(bookingStartDate, bookingEndDate),
-            new CustomerId("72cf3524-7838-45f3-8179-2e75abe5e81c"),
-            new CustomerName("Perico Los Palotes"),
-            new EmailAddress("perico.los.palotes@mail.com"),
+            new Customer(
+                new CustomerId("72cf3524-7838-45f3-8179-2e75abe5e81c"),
+                new CustomerName("Perico Los Palotes"),
+                new EmailAddress("perico.los.palotes@mail.com")
+            ),
             BookingType.VACATION,
             DiscountType.NONE,
             new DiscountValue(0),
@@ -40,9 +42,11 @@ void get_the_correct_status_when_the_booking_is_currently_active() {
         var booking = new Booking(
             new BookingId("2c1e34d0-1430-4307-80bf-a71761f71390"),
             new DateRange(bookingStartDate, bookingEndDate),
-            new CustomerId("72cf3524-7838-45f3-8179-2e75abe5e81c"),
-            new CustomerName("Perico Los Palotes"),
-            new EmailAddress("perico.los.palotes@mail.com"),
+            new Customer(
+                new CustomerId("72cf3524-7838-45f3-8179-2e75abe5e81c"),
+                new CustomerName("Perico Los Palotes"),
+                new EmailAddress("perico.los.palotes@mail.com")
+            ),
             BookingType.VACATION,
             DiscountType.NONE,
             new DiscountValue(0),
@@ -63,9 +67,11 @@ void get_the_correct_status_when_the_booking_is_finished() {
         var booking = new Booking(
             new BookingId("2c1e34d0-1430-4307-80bf-a71761f71390"),
             new DateRange(bookingStartDate, bookingEndDate),
-            new CustomerId("72cf3524-7838-45f3-8179-2e75abe5e81c"),
-            new CustomerName("Perico Los Palotes"),
-            new EmailAddress("perico.los.palotes@mail.com"),
+            new Customer(
+                new CustomerId("72cf3524-7838-45f3-8179-2e75abe5e81c"),
+                new CustomerName("Perico Los Palotes"),
+                new EmailAddress("perico.los.palotes@mail.com")
+            ),
             BookingType.VACATION,
             DiscountType.NONE,
             new DiscountValue(0),