Could you help me?

Question about the task

MVC (part 9)

Java Multithreading, Level 4, Lesson 14

Under discussion

Idk how bite it.

This is the last task on MVC.

1. Following the MVC pattern, do the following by analogy with how the previous methods were implemented:
write the logic for updating a user. After the update operation, the list of users must be displayed.

Assign the following methods to MVC classes:
public void fireUserDataChangedEvent(String name, long id, int level)
public void onChangeUserData(String name, long id, int level)
public void changeUserData(String name, long id, int level)

where name and level are the new values for the user with the selected id.

Note: the method that you are going to add to the View needs to be added to EditUserView.

2. Call fireUserDataChangedEvent in main before calling the fireShowDeletedUsersEvent() method.

3. Add to the Model interface the method that you put in the Model, and implement it in FakeModel: throw an UnsupportedOperationException.

Requirements:

You need to determine the correct location for the fireUserDataChangedEvent(String name, long id, int level) method, and implement it.
You need to determine the correct location for the onChangeUserData(String name, long id, int level) method, and implement it.
You need to determine the correct location for the void changeUserData(String name, long id, int level) method, and implement it.
In the main method, you need to call the fireUserDataChangedEvent(String, long, int) method before calling the fireShowDeletedUsersEvent() method.
The Model interface must declare the method that you previously implemented in the MainModel class.
In the FakeModel class, you need to throw an UnsupportedOperationException in the body of the method that was added to the Model interface.

package com.codegym.task.task36.task3608; import com.codegym.task.task36.task3608.controller.Controller; import com.codegym.task.task36.task3608.model.MainModel; import com.codegym.task.task36.task3608.model.Model; import com.codegym.task.task36.task3608.view.EditUserView; import com.codegym.task.task36.task3608.view.UsersView; public class Solution { public static void main(String[] args) { Model model = new MainModel(); UsersView usersView = new UsersView(); Controller controller = new Controller(); EditUserView editUserView = new EditUserView(); usersView.setController(controller); controller.setModel(model); controller.setUsersView(usersView); editUserView.setController(controller); controller.setEditUserView(editUserView); usersView.fireShowAllUsersEvent(); usersView.fireOpenUserEditFormEvent(126L); editUserView.fireUserDeletedEvent(124L); editUserView.fireUserDataChangedEvent("aa",12L,12); usersView.fireShowDeletedUsersEvent(); } }

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Darek

Level 41 , Katowice, Poland

9 September 2020, 20:27

1. In the MainModel class you need to add the public void changeUserData (String name, long id, int level) method, in which: a.on usersService, we call the createOrUpdateUser (name, id, level) method b. we call the loadUsers () method 2. In the Solution class, in the main method, you only need to call the fireUserDataChangedEvent ("Franklin", 123l, 1) method on editUserView, the data inside is from the users list from the DataSource class Good luck:)

Oskar

Level 31 , Poznań, Polska

21 April 2020, 09:16

Now i have a problem in this requirement In the main method, you need to call the fireUserDataChangedEvent(String, long, int) method before calling the fireShowDeletedUsersEvent() method. recommendation: The output of the main method must contain the modified user.

Branka

Level 41 , Belgrade, Serbia

7 May 2020, 16:01

You need to check which user needs to be modified and correct the arguments in fireUserDataChangedEvent() in main.

Wei Cui

Level 39 , Newark, United States

21 April 2020, 03:35

useful

public void changeUserData(String name, long id, int level) {
       userService.createOrUpdateUser(name, id, level);
       dataModel.setDisplayDeletedUserList(false);
       dataModel.setUsers(getAllUsers());
   }