net.shibboleth.utilities.java.support.logic

Class StrategyIndirectedPredicate<T1,T2>

java.lang.Object

net.shibboleth.utilities.java.support.logic.StrategyIndirectedPredicate<T1,T2>

Type Parameters:

T1 - type of object used as the source of the data to compare

T2 - type of object being compared

All Implemented Interfaces:

com.google.common.base.Predicate<T1>

public class StrategyIndirectedPredicate<T1,T2>
extends Object
implements com.google.common.base.Predicate<T1>

Generic predicate that checks a candidate Object returned by a lookup function against an injected predicate.

Field Summary

Fields

Modifier and Type	Field and Description
private com.google.common.base.Function<T1,T2>	objectLookupStrategy Lookup strategy for object.
private com.google.common.base.Predicate<T2>	predicate Predicate to apply to indirected object.

Constructor Summary

Constructors

Constructor and Description
StrategyIndirectedPredicate(com.google.common.base.Function<T1,T2> objectStrategy, Collection<T2> collection) Constructor that simplifies constructing a test for containment in a collection, which is a common use case.
StrategyIndirectedPredicate(com.google.common.base.Function<T1,T2> objectStrategy, com.google.common.base.Predicate<T2> pred) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	apply(T1 input)
static <T1,T2> StrategyIndirectedPredicate<T1,T2>	forCollection(com.google.common.base.Function<T1,T2> objectStrategy, Collection<T2> collection) Factory method for collection-based constructor.
static <T1,T2> StrategyIndirectedPredicate<T1,T2>	forPredicate(com.google.common.base.Function<T1,T2> objectStrategy, com.google.common.base.Predicate<T2> pred) Factory method for predicate-based constructor.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.google.common.base.Predicate

equals

Field Detail

objectLookupStrategy

@Nonnull
private final com.google.common.base.Function<T1,T2> objectLookupStrategy

Lookup strategy for object.

predicate

@Nonnull
private final com.google.common.base.Predicate<T2> predicate

Predicate to apply to indirected object.

Constructor Detail

StrategyIndirectedPredicate

public StrategyIndirectedPredicate(@Nonnull
                           com.google.common.base.Function<T1,T2> objectStrategy,
                           @Nonnull
                           com.google.common.base.Predicate<T2> pred)

Constructor.

Parameters:

objectStrategy - lookup strategy for object

pred - the predicate to apply

StrategyIndirectedPredicate

public StrategyIndirectedPredicate(@Nonnull
                           com.google.common.base.Function<T1,T2> objectStrategy,
                           @Nonnull
                           Collection<T2> collection)

Constructor that simplifies constructing a test for containment in a collection, which is a common use case.

Parameters:

objectStrategy - lookup strategy for object

collection - a collection to test for containment

Method Detail

apply

public boolean apply(@Nullable
            T1 input)

Specified by:

apply in interface com.google.common.base.Predicate<T1>

forPredicate

@Nonnull
public static <T1,T2> StrategyIndirectedPredicate<T1,T2> forPredicate(@Nonnull
                                                              com.google.common.base.Function<T1,T2> objectStrategy,
                                                              @Nonnull
                                                              com.google.common.base.Predicate<T2> pred)

Factory method for predicate-based constructor.

Type Parameters:

T1 - type of object used as the source of the data to compare

T2 - type of object being compared

Parameters:

objectStrategy - the lookup strategy for object

pred - the predicate to apply

Returns:

a suitably constructed predicate

Since:

7.3.0

forCollection

@Nonnull
public static <T1,T2> StrategyIndirectedPredicate<T1,T2> forCollection(@Nonnull
                                                               com.google.common.base.Function<T1,T2> objectStrategy,
                                                               @Nonnull
                                                               Collection<T2> collection)

Factory method for collection-based constructor.

Type Parameters:

T1 - type of object used as the source of the data to compare

T2 - type of object being compared

Parameters:

objectStrategy - the lookup strategy for object

collection - a collection to test for containment

Returns:

a suitably constructed predicate

Since:

7.3.0