authorization
Class UserAuthorizer

java.lang.Object
  authorization.UserAuthorizer

All Implemented Interfaces:

IUserAuthorizer

public class UserAuthorizer
extends java.lang.Object
implements IUserAuthorizer

This class implements the IUserAuthorizer interface using an in-memory database initialized when the model is loaded for execution.

Field Summary

private java.util.HashMap

users Map from user names to user authentication and authorization information (String -> User).

Constructor Summary

UserAuthorizer()
Constructor: create an empty user authorization map.

Method Summary

void	addUser(java.lang.String userName, java.lang.String password, java.lang.String[] capabilities) Add a user to the authentication and authorization database.
boolean	isAuthenticated(java.lang.String userName, java.lang.String password) Look up this user name and password in the database.
boolean	isCapable(java.lang.String userName, java.lang.String capability) Determine whether or not this user has this capability.

Methods inherited from class java.lang.Object

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

Field Detail

users

private java.util.HashMap users

Map from user names to user authentication and authorization information (String -> User).

Constructor Detail

UserAuthorizer

public UserAuthorizer()

Constructor: create an empty user authorization map.

Method Detail

addUser

public void addUser(java.lang.String userName,
                    java.lang.String password,
                    java.lang.String[] capabilities)
             throws java.lang.IllegalArgumentException

Add a user to the authentication and authorization database.

Parameters:

userName - user name

password - user password

capabilities - names of capabilities possessed by this user

Throws:

java.lang.IllegalArgumentException - for invalid user data or duplicate name.

isAuthenticated

public boolean isAuthenticated(java.lang.String userName,
                               java.lang.String password)

Look up this user name and password in the database.

Specified by:

isAuthenticated in interface IUserAuthorizer

Parameters:

userName - user name supplied

password - password supplied

Returns:

true when the user name and password match a user database entry

isCapable

public boolean isCapable(java.lang.String userName,
                         java.lang.String capability)

Determine whether or not this user has this capability.

Specified by:

isCapable in interface IUserAuthorizer

Parameters:

userName - name of user

capability - capability desired

Returns:

true only if this user has the requested capability