com.sptci.auth.digest
Class Authenticator

java.lang.Object
  com.sptci.auth.digest.Authenticator

All Implemented Interfaces:

com.withay.http.PasswordRetriever

Direct Known Subclasses:

DatabaseAuthenticator

public abstract class Authenticator
extends Object
implements com.withay.http.PasswordRetriever

An abstract PasswordRetriever implementation that performs authentication.

Copyright 2006, Sans Pareil Technologies, Inc.

Version:

$Id: Authenticator.java 4553 2008-12-24 10:34:16Z rakesh $

Author:

Rakesh Vidyadharan 2006-11-15

Nested Class Summary

protected static class

Authenticator.ManagerTask A TimerTask that is used to clear the userMap periodically.

Field Summary

protected static Logger	logger The logger that is used to log errors or other messages.
protected User	user The User object that was fetched through the authentication request.
protected static Map<String,User>	userMap A Map used to cache userName and User values.
protected String	userName The username that was specified in the authentication request.

Constructor Summary

Authenticator()

Method Summary

protected abstract User	fetchUser() Fetch the user object from the data store and populate the fields of user.
String	getPassword(String userName) Implementation of the PasswordRetriever.getPassword method.
User	getUser() Returns user.
String	getUserName() Returns userName.
protected void	setUser(User user) Set user.
protected void	setUserName(String userName) Set userName.

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected static final Logger logger

The logger that is used to log errors or other messages.

userMap

protected static final Map<String,User> userMap

A Map used to cache userName and User values. Users who do not exist will be stored with a null object.

user

protected User user

The User object that was fetched through the authentication request.

userName

protected String userName

The username that was specified in the authentication request.

Constructor Detail

Authenticator

public Authenticator()

Method Detail

getPassword

public String getPassword(String userName)
                   throws com.withay.http.PasswordRetrievalException

Implementation of the PasswordRetriever.getPassword method. Find the User object corresponding to the userName specified.

Specified by:

getPassword in interface com.withay.http.PasswordRetriever

Parameters:

userName - - The User.userName of the user

Returns:

String - The password for the user.

Throws:

com.withay.http.PasswordRetrievalException - - If the userName specified could not be found in the users table.

See Also:

fetchUser()

fetchUser

protected abstract User fetchUser()
                           throws com.withay.http.PasswordRetrievalException

Fetch the user object from the data store and populate the fields of user. Adds a new entry into userMap.

Returns:

User The properly initialised object.

Throws:

com.withay.http.PasswordRetrievalException - If errors are encountered while fetching the database object.

getUser

public User getUser()

Returns user.

Returns:

The value/reference of/to user.

setUser

protected void setUser(User user)

Set user.

Parameters:

user - The value to set.

getUserName

public String getUserName()

Returns userName.

Returns:

The value/reference of/to userName.

setUserName

protected void setUserName(String userName)

Set userName.

Parameters:

userName - The value to set.