libsys

Class UserFactory

java.lang.Object

libsys.UserFactory

public class UserFactory
extends java.lang.Object

Handles all the User(s)

Field Summary

Fields

Modifier and Type	Field and Description
private int	id
private java.lang.String	userFilename
private java.util.List<User>	users

Constructor Summary

Constructors

Constructor and Description
UserFactory() Create a new empty UserFactory
UserFactory(java.lang.String userFilename) Create a new UserFactory and fill it with information from a JSON file

Method Summary

Modifier and Type	Method and Description
(package private) User	getUser(int index) Looks for a User with the given id
User	getUser(java.lang.String name) Looks for the User with the given name
(package private) User	newUser(java.lang.String name, int limit) Adds a new User into this class
private User	search(int index, int start, int end) Recursive binary search through the array list for the User with the given id
(package private) void	setUserFileName(java.lang.String userFilename) Update the output filename for the object
(package private) void	toJsonFile() Output the data into a JSON file replacing the input file (or if filename not given, "users.json")
void	update(User oldUser, User newUser) Replacing a User in the array list with a new User

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

id

private int id

userFilename

private java.lang.String userFilename

users

private java.util.List<User> users

Constructor Detail

UserFactory

public UserFactory()

Create a new empty UserFactory

UserFactory

public UserFactory(java.lang.String userFilename)

Create a new UserFactory and fill it with information from a JSON file

Parameters:

userFilename - Name of the input JSON file

Method Detail

getUser

User getUser(int index)

Looks for a User with the given id

Parameters:

index - id of the User to be found

Returns:

User with the given id

getUser

public User getUser(java.lang.String name)

Looks for the User with the given name

Parameters:

name - Name of the User to be found

Returns:

User with the given name

newUser

User newUser(java.lang.String name,
             int limit)

Adds a new User into this class

Parameters:

name - Name of the User

limit - Limit of Book the User can borrow

Returns:

The new User that is just created

search

private User search(int index,
                    int start,
                    int end)

Recursive binary search through the array list for the User with the given id

Parameters:

index - id of the User to be found

start - Starting point to search

end - Ending point to search

Returns:

User with the given id

setUserFileName

void setUserFileName(java.lang.String userFilename)

Update the output filename for the object

Parameters:

userFilename - The new filename

toJsonFile

void toJsonFile()

Output the data into a JSON file replacing the input file (or if filename not given, "users.json")

update

public void update(User oldUser,
                   User newUser)

Replacing a User in the array list with a new User

Parameters:

oldUser - User to be replaced

newUser - User replacing it