Package 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	Description
static Transformer	INSTANCE	Singleton predicate instance

Method Summary

Modifier and Type	Method	Description
static <T> Transformer<T,T>	nopTransformer()	Factory returning the singleton instance.
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

INSTANCE

public static final Transformer INSTANCE

Singleton predicate instance

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