org.apache.commons.collections.functors
Class ClosureTransformer<T>

java.lang.Object
  org.apache.commons.collections.functors.ClosureTransformer<T>

All Implemented Interfaces:

Serializable, Transformer<T,T>

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

Transformer implementation that calls a Closure using the input object and then returns the input.

Since:

Commons Collections 3.0

Version:

$Revision: 1.1.1.1 $ $Date: 2005/05/23 04:34:16 $

Author:

Matt Hall, John Watkinson, Stephen Colebourne

See Also:

Serialized Form

Constructor Summary

ClosureTransformer(Closure<T> closure)
Constructor that performs no validation.

Method Summary

Closure<T>	getClosure() Gets the closure.
static <T> Transformer<T,T>	getInstance(Closure<T> closure) Factory method that performs validation.
T	transform(T input) Transforms the input to result by executing a closure.

Methods inherited from class java.lang.Object

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

Constructor Detail

ClosureTransformer

public ClosureTransformer(Closure<T> closure)

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

Parameters:

closure - the closure to call, not null

Method Detail

getInstance

public static <T> Transformer<T,T> getInstance(Closure<T> closure)

Factory method that performs validation.

Parameters:

closure - the closure to call, not null

Returns:

the closure transformer

Throws:

IllegalArgumentException - if the closure is null

transform

public T transform(T input)

Transforms the input to result by executing a closure.

Specified by:

transform in interface Transformer<T,T>

Parameters:

input - the input object to transform

Returns:

the transformed result

getClosure

public Closure<T> getClosure()

Gets the closure.

Returns:

the closure

Since:

Commons Collections 3.1