Package org.apache.commons.collections.functors

Class ClosureTransformer

java.lang.Object

org.apache.commons.collections.functors.ClosureTransformer

All Implemented Interfaces:

java.io.Serializable, Transformer

public class ClosureTransformer
extends java.lang.Object
implements Transformer, java.io.Serializable

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

Since:

Commons Collections 3.0

Version:

$Revision: 646777 $ $Date: 2008-04-10 14:33:15 +0200 (Thu, 10 Apr 2008) $

Author:

Stephen Colebourne

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
ClosureTransformer(Closure closure)	Constructor that performs no validation.

Method Summary

Modifier and Type	Method	Description
Closure	getClosure()	Gets the closure.
static Transformer	getInstance(Closure closure)	Factory method that performs validation.
java.lang.Object	transform(java.lang.Object 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 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 Transformer getInstance(Closure closure)

Factory method that performs validation.

Parameters:

closure - the closure to call, not null

Returns:

the closure transformer

Throws:

java.lang.IllegalArgumentException - if the closure is null

transform

public java.lang.Object transform(java.lang.Object input)

Transforms the input to result by executing a closure.

Specified by:

transform in interface Transformer

Parameters:

input - the input object to transform

Returns:

the transformed result

getClosure

public Closure getClosure()

Gets the closure.

Returns:

the closure

Since:

Commons Collections 3.1