org.apache.commons.collections.functors
Class NOPTransformer<I>

java.lang.Object
  org.apache.commons.collections.functors.NOPTransformer<I>

All Implemented Interfaces:

Serializable, Transformer<I,I>

public class NOPTransformer<I>
extends Object
implements Transformer<I,I>, Serializable

Transformer implementation that does nothing.

Since:

Commons Collections 3.0

Version:

$Revision: 1.1.1.1 $ $Date: 2005/05/23 04:34:28 $

Author:

Matt Hall, John Watkinson, Stephen Colebourne

See Also:

Serialized Form

Field Summary

static Transformer

INSTANCE Singleton predicate instance

Method Summary

static Transformer	getInstance() Factory returning the singleton instance.
I	transform(I 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

getInstance

public static Transformer getInstance()

Factory returning the singleton instance.

Returns:

the singleton instance

Since:

Commons Collections 3.1

transform

public I transform(I input)

Transforms the input to result by doing nothing.

Specified by:

transform in interface Transformer<I,I>

Parameters:

input - the input object to transform

Returns:

the transformed result which is the input