org.apache.commons.collections4.functors

Class NOPTransformer<T>

java.lang.Object

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

All Implemented Interfaces:

java.io.Serializable, Transformer<T,T>

public class NOPTransformer<T>
extends java.lang.Object
implements Transformer<T,T>, java.io.Serializable

Transformer implementation that does nothing.

Since:

3.0

Version:

$Id: NOPTransformer.java 1543950 2013-11-20 21:13:35Z tn $

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static Transformer	INSTANCE Singleton predicate instance
private static long	serialVersionUID Serial version UID

Constructor Summary

Constructors

Modifier	Constructor and Description
private	NOPTransformer() Constructor.

Method Summary

Modifier and Type	Method and Description
static <T> Transformer<T,T>	nopTransformer() Factory returning the singleton instance.
private java.lang.Object	readResolve()
T	transform(T input) Transforms the input to result by doing nothing.

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

Serial version UID

See Also:

Constant Field Values

INSTANCE

public static final Transformer INSTANCE

Singleton predicate instance

Constructor Detail

NOPTransformer

private NOPTransformer()

Constructor.

Method Detail

nopTransformer

public static <T> Transformer<T,T> nopTransformer()

Factory returning the singleton instance.

Type Parameters:

T - the input/output type

Returns:

the singleton instance

Since:

3.1

transform

public T transform(T input)

Transforms the input to result by doing nothing.

Specified by:

transform in interface Transformer<T,T>

Parameters:

input - the input object to transform

Returns:

the transformed result which is the input

readResolve

private java.lang.Object readResolve()