Interface Authentication
@ProviderType
public interface Authentication
The 
Authentication interface defines methods to validate
 Credentials during the
 login step of the
 authentication process. The validation depends on the authentication
 mechanism in place.
 A given implementation may only handle certain types of Credentials
 as the authentication process is tightly coupled to the semantics of the
 Credentials.
 For example a implementation may only be able to validate UserID/password
 pairs such as passed with SimpleCredentials, while another
 might be responsible for validating login token issued by the repository or
 an external access token generation mechanism.
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Method SummaryModifier and TypeMethodDescriptionbooleanauthenticate(@Nullable Credentials credentials) Validates the specifiedCredentialsand returnstrueif the validation was successful.@Nullable StringOptional method that return the userID extracted uponauthenticate(Credentials).@Nullable PrincipalOptional method that return thePrincipalof the authenticating user extracted uponauthenticate(Credentials).
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Method Details- 
authenticateValidates the specifiedCredentialsand returnstrueif the validation was successful.- Parameters:
- credentials- to verify
- Returns:
- trueif the validation was successful;- falseif the specified credentials are not supported and this authentication implementation cannot verify their validity.
- Throws:
- LoginException- if the authentication failed.
 
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getUserIdOptional method that return the userID extracted uponauthenticate(Credentials). It is expected to returnnullif the implementation doesn't support this. AnIllegalStateExceptionmay be thrown if called prior toauthenticate(Credentials).- Returns:
- a user identifier or null
 
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getUserPrincipalOptional method that return thePrincipalof the authenticating user extracted uponauthenticate(Credentials). It is expected to returnnullif the implementation doesn't support this. AnIllegalStateExceptionmay be thrown if called prior toauthenticate(Credentials).- Returns:
- a valid Principalornull
 
 
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