userid long type

src/main/java/edu/uchicago/mpcs/topics/controller/UserController.java

@@ -38,9 +38,9 @@ public class UserController {
     @RequestMapping(method = POST, value = "/register")
     public ResponseEntity<?> addUser(@RequestBody User user, UriComponentsBuilder ucBuilder) {
 
-        User existUser = this.userService.findByUserId(user.getUserId()) ;
+        User existUser = this.userService.findByUserId(user.getUserId().toString()) ;
         if (existUser != null) {
-            throw new UserAlreadyExistException(user.getUserId(), "Username already exists");
+            throw new UserAlreadyExistException(user.getUserId().toString(), "Username already exists");
         }
         User new_user = this.userService.register(user);
         HttpHeaders headers = new HttpHeaders();

src/main/java/edu/uchicago/mpcs/topics/db/UserRepositoryImpl.java

@@ -53,7 +53,7 @@ public class UserRepositoryImpl implements UserRepository {
             this.userRepository.save(user);
             return user;
         } else {
-            throw new UserAlreadyExistException(user.getUserId(), "Username already exists");
+            throw new UserAlreadyExistException(user.getUserId().toString(), "Username already exists");
         }
     }
 

src/main/java/edu/uchicago/mpcs/topics/service/impl/UserServiceImpl.java

@@ -48,7 +48,7 @@ public class UserServiceImpl implements UserService {
             this.userRepository.save(user);
             return user;
         } else {
-            throw new UserAlreadyExistException(user.getUserId(), "Username already exists");
+            throw new UserAlreadyExistException(user.getUserId().toString(), "Username already exists");
         }
     }
 

src/main/java/edu/uchicago/mpcs/topics/user/Admin.java

@@ -10,7 +10,7 @@ import javax.persistence.Entity;
 @ Entity
 public class Admin extends User {
 
-    public Admin(String userId, String password, String firstName, String lastName, String email, boolean isAdmin) {
+    public Admin(Long userId, String password, String firstName, String lastName, String email, boolean isAdmin) {
         super(userId, password, firstName, lastName, email, true);
     }
 }

src/main/java/edu/uchicago/mpcs/topics/user/Buyer.java

@@ -9,7 +9,7 @@ import javax.persistence.Entity;
 @Entity
 public class Buyer extends User {
 
-    public Buyer(String userId, String password, String firstName, String lastName, String email, boolean isAdmin) {
+    public Buyer(Long userId, String password, String firstName, String lastName, String email, boolean isAdmin) {
         super(userId, password, firstName, lastName, email, false);
     }
 }

src/main/java/edu/uchicago/mpcs/topics/user/Seller.java

@@ -8,7 +8,7 @@ import javax.persistence.Entity;
 @Entity
 public class Seller extends User {
 
-    public Seller(String userId, String password, String firstName, String lastName, String email, boolean isAdmin) {
+    public Seller(Long userId, String password, String firstName, String lastName, String email, boolean isAdmin) {
         super(userId, password, firstName, lastName, email, false);
     }
 }

src/main/java/edu/uchicago/mpcs/topics/user/User.java

@@ -19,9 +19,10 @@ public class User {
 
     @Id
     @Column(name = "USER_ID")
-    @GenericGenerator(strategy = "uuid2", name = "uuid")
-    @GeneratedValue(generator = "uuid")
-    private String userId;
+//    @GenericGenerator(strategy = "uuid2", name = "uuid")
+//    @GeneratedValue(generator = "uuid")
+    @GeneratedValue
+    private Long userId;
 
     @Column(name = "PASSWORD", nullable = false)
     private String password;
@@ -40,7 +41,7 @@ public class User {
 
     public User() {}
 
-    public User(String userId, String password, String firstName, String lastName, String email, boolean isAdmin)
+    public User(Long userId, String password, String firstName, String lastName, String email, boolean isAdmin)
     {
         this.userId = userId;
         this.password = password;
@@ -51,11 +52,11 @@ public class User {
     }
 
 
-    public String getUserId() {
+    public Long getUserId() {
         return userId;
     }
 
-    public void setId(String userId) {
+    public void setId(Long userId) {
         this.userId = userId;
     }