org.springframework.security.authentication.dao
Class ReflectionSaltSource

java.lang.Object
  org.springframework.security.authentication.dao.ReflectionSaltSource

All Implemented Interfaces:

InitializingBean, SaltSource

public class ReflectionSaltSource
extends Object
implements SaltSource, InitializingBean

Obtains a salt from a specified property of the User object.

This allows you to subclass User and provide an additional bean getter for a salt. You should use a synthetic value that does not change, such as a database primary key. Do not use username if it is likely to change.

Version:

$Id: ReflectionSaltSource.java 3650 2009-05-11 05:18:20Z ltaylor $

Author:

Ben Alex

Constructor Summary

ReflectionSaltSource()

Method Summary

void	afterPropertiesSet()
Object	getSalt(UserDetails user) Performs reflection on the passed User to obtain the salt.
protected String	getUserPropertyToUse()
void	setUserPropertyToUse(String userPropertyToUse) The method name to call to obtain the salt.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ReflectionSaltSource

public ReflectionSaltSource()

Method Detail

afterPropertiesSet

public void afterPropertiesSet()
                        throws Exception

Specified by:

afterPropertiesSet in interface InitializingBean

Throws:

Exception

getSalt

public Object getSalt(UserDetails user)

Performs reflection on the passed User to obtain the salt.

The property identified by userPropertyToUse must be available from the passed User object. If it is not available, an AuthenticationServiceException will be thrown.

Specified by:

getSalt in interface SaltSource

Parameters:

user - which contains the method identified by userPropertyToUse

Returns:

the result of invoking user.userPropertyToUse(), or if the method doesn't exist, user.getUserPropertyToUse().

Throws:

AuthenticationServiceException - if reflection fails

getUserPropertyToUse

protected String getUserPropertyToUse()

setUserPropertyToUse

public void setUserPropertyToUse(String userPropertyToUse)

The method name to call to obtain the salt. Can be either a method name or a bean property name. If your UserDetails contains a UserDetails.getSalt() method, you should set this property to "getSalt" or "salt".

Parameters:

userPropertyToUse - the name of the getter to call to obtain the salt from the UserDetails

toString

public String toString()

Overrides:

toString in class Object