Package org.apache.commons.collections4.functors

Class IdentityPredicate<T>

java.lang.Object

org.apache.commons.collections4.functors.AbstractPredicate<T>

org.apache.commons.collections4.functors.IdentityPredicate<T>

Type Parameters:

T - the type of the input to the predicate.

All Implemented Interfaces:

Serializable, Predicate<T>, Predicate<T>

public final class IdentityPredicate<T>
extends AbstractPredicate<T>
implements Serializable

Predicate implementation that returns true if the input is the same object as the one stored in this predicate.

Since:

3.0

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
IdentityPredicate(T object)	Constructor that performs no validation.

Method Summary

Modifier and Type	Method	Description
T	getValue()	Gets the value.
static <T> Predicate<T>	identityPredicate(T object)	Creates the identity predicate.
boolean	test(T object)	Evaluates the predicate returning true if the input object is identical to the stored object.

Methods inherited from class org.apache.commons.collections4.functors.AbstractPredicate

evaluate

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.Predicate

and, negate, or

Constructor Details

IdentityPredicate

public IdentityPredicate(T object)

Constructor that performs no validation. Use identityPredicate if you want that.

Parameters:

object - the object to compare to

Method Details

identityPredicate

public static <T> Predicate<T> identityPredicate(T object)

Creates the identity predicate.

Type Parameters:

T - the type that the predicate queries

Parameters:

object - the object to compare to

Returns:

the predicate

getValue

public T getValue()

Gets the value.

Returns:

the value

Since:

3.1

test

public boolean test(T object)

Evaluates the predicate returning true if the input object is identical to the stored object.

Specified by:

test in interface Predicate<T>

Specified by:

test in interface Predicate<T>

Parameters:

object - the input object

Returns:

true if input is the same object as the stored value