public static final class

AuthenticationManagerBeanDefinitionParser.NullAuthenticationProvider

extends Object
implements AuthenticationProvider
java.lang.Object
   ↳ org.springframework.security.config.authentication.AuthenticationManagerBeanDefinitionParser.NullAuthenticationProvider

Class Overview

Provider which doesn't provide any service. Only used to prevent a configuration exception if the provider list is empty (usually because a child ProviderManager from the <http> namespace, such as OpenID, is expected to handle the request).

Summary

Public Constructors
AuthenticationManagerBeanDefinitionParser.NullAuthenticationProvider()
Public Methods
Authentication authenticate(Authentication authentication)
Performs authentication with the same contract as authenticate(Authentication).
boolean supports(Class<?> authentication)
Returns true if this AuthenticationProvider supports the indicated Authentication object.
[Expand]
Inherited Methods
From class java.lang.Object
From interface org.springframework.security.authentication.AuthenticationProvider

Public Constructors

public AuthenticationManagerBeanDefinitionParser.NullAuthenticationProvider ()

Public Methods

public Authentication authenticate (Authentication authentication)

Performs authentication with the same contract as authenticate(Authentication).

Parameters
authentication the authentication request object.
Returns
  • a fully authenticated object including credentials. May return null if the AuthenticationProvider is unable to support authentication of the passed Authentication object. In such a case, the next AuthenticationProvider that supports the presented Authentication class will be tried.
Throws
AuthenticationException

public boolean supports (Class<?> authentication)

Returns true if this AuthenticationProvider supports the indicated Authentication object.

Returning true does not guarantee an AuthenticationProvider will be able to authenticate the presented instance of the Authentication class. It simply indicates it can support closer evaluation of it. An AuthenticationProvider can still return null from the authenticate(Authentication) method to indicate another AuthenticationProvider should be tried.

Selection of an AuthenticationProvider capable of performing authentication is conducted at runtime the ProviderManager.

Returns
  • true if the implementation can more closely evaluate the Authentication class presented