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

java.lang.Object
  extended by org.apache.commons.collections4.functors.NOPTransformer<T>
All Implemented Interfaces:
Serializable, Transformer<T,T>

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

Transformer implementation that does nothing.

Since:
3.0
Version:
$Id: NOPTransformer.java 1476582 2013-04-27 14:13:54Z tn $
See Also:
Serialized Form

Field Summary
static Transformer<Object,Object> INSTANCE
          Singleton predicate instance
 
Method Summary
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<Object,Object> 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


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