design patterns : mediator

design-pattern/gof/src/mediator/after/CleaningService.java

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+package mediator.after;
+
+public class CleaningService {
+
+    private FrontDesk frontDesk = new FrontDesk();
+
+    public void getTowers(Integer id, int numberOfTowers) {
+        String roomNumber = this.frontDesk.getRoomNumberFor(id);
+        System.out.println("provide " + numberOfTowers + " to " + roomNumber);
+    }
+}

design-pattern/gof/src/mediator/after/FrontDesk.java

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+package mediator.after;
+
+import java.time.LocalDateTime;
+
+public class FrontDesk {
+
+    private CleaningService cleaningService = new CleaningService();
+
+    private Restaurant restaurant = new Restaurant();
+
+    public void getTowers(Guest guest, int numberOfTowers) {
+        cleaningService.getTowers(guest.getId(), numberOfTowers);
+    }
+
+    public String getRoomNumberFor(Integer guestId) {
+        return "1111";
+    }
+
+    public void dinner(Guest guest, LocalDateTime dateTime) {
+        restaurant.dinner(guest.getId(), dateTime);
+    }
+}

design-pattern/gof/src/mediator/after/Guest.java

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+package mediator.after;
+
+import java.time.LocalDateTime;
+
+public class Guest {
+
+    private Integer id;
+
+    private FrontDesk frontDesk = new FrontDesk();
+
+    public void getTowers(int numberOfTowers) {
+        this.frontDesk.getTowers(this, numberOfTowers);
+    }
+
+    public void dinner(LocalDateTime dateTime) {
+        this.frontDesk.dinner(this, dateTime);
+    }
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+}

design-pattern/gof/src/mediator/after/Restaurant.java

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+package mediator.after;
+
+import java.time.LocalDateTime;
+
+public class Restaurant {
+    public void dinner(Integer id, LocalDateTime dateTime) {
+
+    }
+}

design-pattern/gof/src/mediator/before/CleaningService.java

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+package mediator.before;
+
+public class CleaningService {
+    public void clean(Gym gym) {
+        System.out.println("clean " + gym);
+    }
+
+    public void getTower(Guest guest, int numberOfTower) {
+        System.out.println(numberOfTower + " towers to " + guest);
+    }
+
+    public void clean(Restaurant restaurant) {
+        System.out.println("clean " + restaurant);
+    }
+}

design-pattern/gof/src/mediator/before/Guest.java

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+package mediator.before;
+
+public class Guest {
+
+    private Restaurant restaurant = new Restaurant();
+
+    private CleaningService cleaningService = new CleaningService();
+
+    public void dinner() {
+        restaurant.dinner(this);
+    }
+
+    public void getTower(int numberOfTower) {
+        cleaningService.getTower(this, numberOfTower);
+    }
+
+}

design-pattern/gof/src/mediator/before/Gym.java

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+package mediator.before;
+
+public class Gym {
+
+    private CleaningService cleaningService;
+
+    public void clean() {
+        cleaningService.clean(this);
+    }
+}

design-pattern/gof/src/mediator/before/Hotel.java

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+package mediator.before;
+
+public class Hotel {
+
+    public static void main(String[] args) {
+        Guest guest = new Guest();
+        guest.getTower(3);
+        guest.dinner();
+
+        Restaurant restaurant = new Restaurant();
+        restaurant.clean();
+    }
+}

design-pattern/gof/src/mediator/before/Restaurant.java

@@ -0,0 +1,13 @@
+package mediator.before;
+
+public class Restaurant {
+
+    private CleaningService cleaningService = new CleaningService();
+    public void dinner(Guest guest) {
+        System.out.println("dinner " + guest);
+    }
+
+    public void clean() {
+        cleaningService.clean(this);
+    }
+}