BugFix - 5 crash container when deploying to k8s - https://github.com/hamony/reservation-service/issues/5

src/main/java/com/ubluetech/reservationservice/domain/Guest.java

@@ -1,8 +1,10 @@
 package com.ubluetech.reservationservice.domain;
 
 import jakarta.persistence.Column;
+import jakarta.persistence.Embeddable;
 import lombok.Getter;
 
+@Embeddable
 @Getter
 class Guest {
     @Column(nullable = false)

src/main/java/com/ubluetech/reservationservice/domain/Reservation.java

@@ -1,6 +1,7 @@
 package com.ubluetech.reservationservice.domain;
 
 import java.time.LocalDate;
+import java.util.Set;
 
 import jakarta.persistence.*;
 import lombok.AllArgsConstructor;
@@ -19,7 +20,12 @@ public class Reservation {
     @GeneratedValue(strategy = GenerationType.AUTO)
     private Long id;
     private Guest guest;
-    private Room room;
+
+    @OneToMany(mappedBy = "reservation",
+               cascade = CascadeType.ALL,
+               orphanRemoval = true)   
+    private Set<Room> rooms;
+
     private LocalDate checkInDate;
     private LocalDate checkOutDate;
 }

src/main/java/com/ubluetech/reservationservice/domain/Room.java

@@ -3,13 +3,58 @@
 import java.math.BigDecimal;
 
 import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.EnumType;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
 import lombok.Getter;
 
+@Entity
+@Table(name = "reserved_room")
 @Getter
 class Room {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+
+    // The parent reference is marked as non-updatable, to prevent breaking the equals/hashCode contract
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "reservation_id",
+                nullable = false,
+                updatable = false)
+    private Reservation reservation;
+
     @Column(nullable = false)
     private String roomNumber;
 
+    @Enumerated(EnumType.STRING)
+    private RoomType roomType;
+
     @Column(nullable = false)
     private BigDecimal price;
+
+    @Override
+    public int hashCode() {
+        return getClass().hashCode();
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+
+        if (!(obj instanceof Room))
+            return false;
+
+        return id != null && 
+                id.equals(((Room) obj).getId());
+    }
+
+
 }

src/main/java/com/ubluetech/reservationservice/domain/RoomType.java

@@ -0,0 +1,5 @@
+package com.ubluetech.reservationservice.domain;
+
+public enum RoomType {
+    SINGLE, DOUBLE, STUDIO, QUEEN, KING, TWIN, LUXURY, SUITE, VILLA, SMOKING
+}