org.apache.commons.collections.functors
Class ClosureTransformer

java.lang.Object
  |
  +--org.apache.commons.collections.functors.ClosureTransformer

All Implemented Interfaces:

Serializable, Transformer

public class ClosureTransformer

extends Object

implements Transformer, Serializable

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

Since:

Commons Collections 3.0

Version:

$Revision: 1.2 $ $Date: 2004/01/14 21:43:09 $

Author:

Stephen Colebourne

See Also:

Serialized Form

Constructor Summary

ClosureTransformer(Closure closure)
Constructor that performs no validation.

Method Summary

static Transformer	getInstance(Closure closure) Factory method that performs validation.
Object	transform(Object input) Call the 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:

IllegalArgumentException - if the closure is null

transform

public Object transform(Object input)

Call the closure.

Specified by:

transform in interface Transformer

Parameters:

input - the object to be transformed

Returns:

a transformed object