Package com.google.common.base

Class FunctionalEquivalence<F,T>

java.lang.Object

com.google.common.base.Equivalence<F>

com.google.common.base.FunctionalEquivalence<F,T>

All Implemented Interfaces:

java.io.Serializable, java.util.function.BiPredicate<F,F>

final class FunctionalEquivalence<F,T>
extends Equivalence<F>
implements java.io.Serializable

Equivalence applied on functional result.

Since:

10.0

Nested Class Summary

Nested classes/interfaces inherited from class com.google.common.base.Equivalence

Equivalence.Equals, Equivalence.Identity, Equivalence.Wrapper<T>

Field Summary

Fields

Modifier and Type	Field	Description
private Function<F,? extends T>	function
private Equivalence<T>	resultEquivalence
private static long	serialVersionUID

Constructor Summary

Constructors

Constructor	Description
FunctionalEquivalence(Function<F,? extends T> function, Equivalence<T> resultEquivalence)

Method Summary

Modifier and Type	Method	Description
protected boolean	doEquivalent(F a, F b)	Implemented by the user to determine whether a and b are considered equivalent, subject to the requirements specified in Equivalence.equivalent(T, T).
protected int	doHash(F a)	Implemented by the user to return a hash code for t, subject to the requirements specified in Equivalence.hash(T).
boolean	equals(java.lang.Object obj)
int	hashCode()
java.lang.String	toString()

Methods inherited from class com.google.common.base.Equivalence

equals, equivalent, equivalentTo, hash, identity, onResultOf, pairwise, test, wrap

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.function.BiPredicate

and, negate, or

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

function

private final Function<F,? extends T> function

resultEquivalence

private final Equivalence<T> resultEquivalence

Constructor Detail

FunctionalEquivalence

FunctionalEquivalence(Function<F,? extends T> function,
                      Equivalence<T> resultEquivalence)

Method Detail

doEquivalent

protected boolean doEquivalent(F a,
                               F b)

Description copied from class: Equivalence

Implemented by the user to determine whether a and b are considered equivalent, subject to the requirements specified in Equivalence.equivalent(T, T).

This method should not be called except by Equivalence.equivalent(T, T). When Equivalence.equivalent(T, T) calls this method, a and b are guaranteed to be distinct, non-null instances.

Specified by:

doEquivalent in class Equivalence<F>

doHash

protected int doHash(F a)

Description copied from class: Equivalence

Implemented by the user to return a hash code for t, subject to the requirements specified in Equivalence.hash(T).

This method should not be called except by Equivalence.hash(T). When Equivalence.hash(T) calls this method, t is guaranteed to be non-null.

Specified by:

doHash in class Equivalence<F>

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object