Package org.apache.sshd.common.util.functors

Interface UnaryEquator<T>

Type Parameters:

T - Type of compared entity

All Superinterfaces:

BiPredicate<T,T>

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 UnaryEquator<T>
extends BiPredicate<T,T>

Checks equality between 2 entities of same type

Author:

Apache MINA SSHD Project

Method Summary

Modifier and Type	Method	Description
default UnaryEquator<T>	and(UnaryEquator<? super T> other)	Returns a composed equator that represents a short-circuiting logical AND of this equator and another.
static <T> UnaryEquator<T>	comparing(Comparator<? super T> c)	Converts a Comparator into a UnaryEquator that returns true if the comparator returns zero
static <T> UnaryEquator<T>	defaultEquality()
static <T> UnaryEquator<T>	falsum()
static <T> boolean	isSameReference(T o1, T o2)
default UnaryEquator<T>	negate()
default UnaryEquator<T>	or(UnaryEquator<? super T> other)	Returns a composed equator that represents a short-circuiting logical AND of this equator and another.
static <T> UnaryEquator<T>	referenceEquality()
static <T> UnaryEquator<T>	verum()

Methods inherited from interface java.util.function.BiPredicate

and, or, test

Method Detail

and

default UnaryEquator<T> and(UnaryEquator<? super T> other)

Returns a composed equator that represents a short-circuiting logical AND of this equator and another. When evaluating the composed equator, if this equator is false, then the other equator is not evaluated.

Parameters:

other - The other (never null equator

Returns:

The compound equator

or

default UnaryEquator<T> or(UnaryEquator<? super T> other)

Returns a composed equator that represents a short-circuiting logical AND of this equator and another. When evaluating the composed equator, if this equator is true, then the other equator is not evaluated.

Parameters:

other - The other (never null equator

Returns:

The compound equator

negate

default UnaryEquator<T> negate()

Specified by:

negate in interface BiPredicate<T,T>

Returns:

an equator that represents the logical negation of this one

isSameReference

static <T> boolean isSameReference(T o1,
                                   T o2)

defaultEquality

static <T> UnaryEquator<T> defaultEquality()

Type Parameters:

T - Type of entity

Returns:

The default equality checker

See Also:

Objects.equals(Object, Object)

referenceEquality

static <T> UnaryEquator<T> referenceEquality()

Type Parameters:

T - Type of entity

Returns:

An equator that checks reference equality

See Also:

isSameReference(Object, Object)

comparing

static <T> UnaryEquator<T> comparing(Comparator<? super T> c)

Converts a Comparator into a UnaryEquator that returns true if the comparator returns zero

Type Parameters:

T - Type of entity

Parameters:

c - The (never null) comparator

Returns:

The equivalent equator

verum

static <T> UnaryEquator<T> verum()

Type Parameters:

T - Type of evaluated entity

Returns:

A UnaryEquator that returns always true

See Also:

verum

falsum

static <T> UnaryEquator<T> falsum()

Type Parameters:

T - Type of evaluated entity

Returns:

A UnaryEquator that returns always false

See Also:

falsum