UserSessionBean

java.lang.Object
- service.UserSessionBean

```
public class UserSessionBean
extends java.lang.Object
```
Session bean for accessing user functions. Register new users with encodeAndSave, which encodes the password. Some functions are accessible only by ADMIN roles, such as promote, demote and delete users. encodeAndSave and userCount is globally accessible.

Author:

Karl Nicholas

Constructor Summary

Constructors
Constructor and Description

UserSessionBean()

Constructors
Constructor and Description
`UserSessionBean()`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`delete(java.lang.Long id)` Delete User by Database Id
`User`	`demoteUser(java.lang.Long id)` Demote User to User by Database Id
`User`	`encodeAndSave(User user)` Register new users.
`java.util.List<User>`	`findAll()` Get List of all Users
`User`	`findByEmail(java.lang.String email)` return User for email.
`User`	`findById(java.lang.Long id)` Find User by Database Id
`static void`	`main(java.lang.String[] args)` Manually encode a password.
`User`	`merge(User user)` Merge user with Database
`User`	`promoteUser(java.lang.Long id)` Promote User to Admin by Database Id
`User`	`updatePassword(User user)` Update the User's password
`java.lang.Long`	`userCount()` Return the number of registered Users

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - UserSessionBean
```
public UserSessionBean()
```
- Method Detail
  - encodeAndSave
```
@PermitAll
public User encodeAndSave(User user)
                               throws java.security.NoSuchAlgorithmException
```
    Register new users. Encodes the password and adds the "USER" role to the user's roles. Returns null if user already exists.
    
    Parameters:
    
    user - User to be encoded.
    
    Returns:
    
    User with role added and password encoded, unless user already exists, then null.
    
    Throws:
    
    java.security.NoSuchAlgorithmException - If configuration wrong.
  - userCount
```
@PermitAll
public java.lang.Long userCount()
```
    Return the number of registered Users
    
    Returns:
    
    number of registered Users
  - updatePassword
```
@RolesAllowed(value="USER")
public User updatePassword(User user)
                                                 throws java.security.NoSuchAlgorithmException
```
    Update the User's password
    
    Parameters:
    
    user - User to update
    
    Returns:
    
    User Updated User
    
    Throws:
    
    java.security.NoSuchAlgorithmException - if no implementation for SHA-256 algorithm.
  - merge
```
@RolesAllowed(value="USER")
public User merge(User user)
```
    Merge user with Database
    
    Parameters:
    
    user - User to merge
    
    Returns:
    
    User Merged User
  - findByEmail
```
@RolesAllowed(value="USER")
public User findByEmail(java.lang.String email)
```
    return User for email.
    
    Parameters:
    
    email - User email to search for.
    
    Returns:
    
    User found for email.
  - delete
```
@RolesAllowed(value="ADMIN")
public void delete(java.lang.Long id)
```
    Delete User by Database Id
    
    Parameters:
    
    id - of User
  - findById
```
@RolesAllowed(value="ADMIN")
public User findById(java.lang.Long id)
```
    Find User by Database Id
    
    Parameters:
    
    id - of user.
    
    Returns:
    
    User or null if not exists
  - findAll
```
@RolesAllowed(value="ADMIN")
public java.util.List<User> findAll()
```
    Get List of all Users
    
    Returns:
    
    List of all Users
  - promoteUser
```
@RolesAllowed(value="ADMIN")
public User promoteUser(java.lang.Long id)
```
    Promote User to Admin by Database Id
    
    Parameters:
    
    id - of User to be promoted.
    
    Returns:
    
    User or null if not exists.
  - demoteUser
```
@RolesAllowed(value="ADMIN")
public User demoteUser(java.lang.Long id)
```
    Demote User to User by Database Id
    
    Parameters:
    
    id - of User to be demoted.
    
    Returns:
    
    User or null if not exists
  - main
```
public static void main(java.lang.String[] args)
                 throws java.lang.Exception
```
    Manually encode a password.
    
    Parameters:
    
    args - nothing.
    
    Throws:
    
    java.lang.Exception - if anything wrong.

Class UserSessionBean

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

UserSessionBean

Method Detail

encodeAndSave

userCount

updatePassword

merge

findByEmail

delete

findById

findAll

promoteUser

demoteUser

main