update User

user Story

user details will successfully update and store in database

### Pre-requisites:-

- [ ] completed feature 1 - create user

- [ ] user dao (update)

- [ ] user service (update)

#### Validations:

​

- [ ] Form validator

* id (less than or equal to 0)

* name ( null, empty, pattern)

* password (null , empty, pattern)

* artist_name(null , empty)

- [ ] Business Validation

* Check whether the id exist

​

#### Messages :

* Invalid id

* Invalid name input

* Invalid password input

* User not found

​

#### Flow:

> Invalid When a user's email is not in use or when the input provided does not meet the criteria, users arise.

​

```mermaid

graph TD;

A(UserService - int id, String name) --> B(Form Validation) -- Valid --> C(Business Validation)

B -- Invalid --> H(Validation Exception)

C -- Valid --> D(Argument Passed to UserDAO)

D --> F(Store Value in Database)

C -- Invalid --> E(Validation Exception)
```