PrincipalEvalPredicate (Shibboleth Identity Provider 4.2.1 API)

All Superinterfaces:

Predicate<PrincipalSupportingComponent>

All Known Implementing Classes:

ExactPrincipalEvalPredicateFactory.ExactMatchPredicate, InexactPrincipalEvalPredicateFactory.InexactMatchPredicate
```
public interface PrincipalEvalPredicate
extends Predicate<PrincipalSupportingComponent>
```
A Predicate to evaluate a Principal that represents a requested form of authentication against a set of principals supported by a PrincipalSupportingComponent.
The predicate contains an additional method that makes available the actual Principal object that satisfied the predicate. In concrete terms, this represents the actual authentication method that was performed.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Principal`	`getMatchingPrincipal()`	Get the `Principal` object from the evaluated `PrincipalSupportingComponent` that actually satisfied the predicate, if any.

Methods inherited from interface java.util.function.Predicate
and, negate, or, test

- Method Detail
  - getMatchingPrincipal
```
@Nullable
Principal getMatchingPrincipal()
```
    Get the Principal object from the evaluated PrincipalSupportingComponent that actually satisfied the predicate, if any.
    
    Returns:
    
    a custom principal, or null