org.wildfly.security.auth.server

Interface PrincipalDecoder

All Superinterfaces:

Function<Principal,String>

All Known Implementing Classes:

X500AttributePrincipalDecoder

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface PrincipalDecoder
extends Function<Principal,String>

A decoder for extracting a simple name from a principal.

Author:

David M. Lloyd

Field Summary

Fields

Modifier and Type	Field and Description
static PrincipalDecoder	DEFAULT The default decoder, which just calls Principal.getName().
static PrincipalDecoder	UNKNOWN A principal decoder which cannot decode any principal.

Method Summary

Modifier and Type	Method and Description
static PrincipalDecoder	aggregate(PrincipalDecoder... decoders) Create an aggregated credential decoder.
default String	apply(Principal principal)
default UnaryOperator<Principal>	asPrincipalRewriter() Get this principal decoder as a principal rewriter that produces a NamePrincipal if the decode succeeds.
static PrincipalDecoder	concatenating(PrincipalDecoder former, String joinString, PrincipalDecoder latter) Create a principal decoder which concatenates the results of two principal decoders.
static PrincipalDecoder	concatenating(String joinString, PrincipalDecoder... decoders) Create a principal decoder that concatenates the results of the given principal decoders in the order in which they're given.
static PrincipalDecoder	constant(String name) Create a principal decoder which always returns the same name.
String	getName(Principal principal) Get the name from a principal.
default PrincipalDecoder	withRewriter(NameRewriter nameRewriter) Add a name rewriter to this principal decoder.

Methods inherited from interface java.util.function.Function

andThen, compose, identity

Field Detail

DEFAULT

static final PrincipalDecoder DEFAULT

The default decoder, which just calls Principal.getName().

UNKNOWN

static final PrincipalDecoder UNKNOWN

A principal decoder which cannot decode any principal.

Method Detail

getName

String getName(Principal principal)

Get the name from a principal. If this decoder cannot understand the given principal type or contents, null is returned.

Parameters:

principal - the principal to decode

Returns:

the name, or null if this decoder does not understand the principal

apply

default String apply(Principal principal)

Specified by:

apply in interface Function<Principal,String>

asPrincipalRewriter

default UnaryOperator<Principal> asPrincipalRewriter()

Get this principal decoder as a principal rewriter that produces a NamePrincipal if the decode succeeds.

Returns:

the rewriter (not null)

withRewriter

default PrincipalDecoder withRewriter(NameRewriter nameRewriter)

Add a name rewriter to this principal decoder. If the name is decoded, it will then be rewritten with the given rewriter. If the rewriter deems the name invalid, then the name will be considered not decoded.

Parameters:

nameRewriter - the name rewriter

Returns:

the combined decoder

aggregate

static PrincipalDecoder aggregate(PrincipalDecoder... decoders)

Create an aggregated credential decoder. The aggregated decoder will check each credential decoder until one matches the credential; this result will be returned.

Parameters:

decoders - the constituent decoders

Returns:

the aggregated decoder

concatenating

static PrincipalDecoder concatenating(PrincipalDecoder former,
                                      String joinString,
                                      PrincipalDecoder latter)

Create a principal decoder which concatenates the results of two principal decoders. If one decoder is not able to decode the principal, null is returned.

Parameters:

former - the former decoder

joinString - the string to use to join the results

latter - the latter decoder

Returns:

the concatenated result

concatenating

static PrincipalDecoder concatenating(String joinString,
                                      PrincipalDecoder... decoders)

Create a principal decoder that concatenates the results of the given principal decoders in the order in which they're given. If any decoder is not able to decode the principal, then null is returned.

Parameters:

joinString - the string to use to join the results

decoders - the principal decoders (must not be null, cannot have null elements)

Returns:

the concatenating decoder

constant

static PrincipalDecoder constant(String name)

Create a principal decoder which always returns the same name.

Parameters:

name - the name to return

Returns:

the constant decoder