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

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

All Implemented Interfaces:

Serializable, Transformer<Object,T>

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

Transformer implementation that calls a Factory and returns the result.

Since:

Commons Collections 3.0

Version:

$Revision: 1.1.1.1 $ $Date: 2005/05/23 04:34:20 $

Author:

Matt Hall, John Watkinson, Stephen Colebourne

See Also:

Serialized Form

Constructor Summary

FactoryTransformer(Factory<T> factory)
Constructor that performs no validation.

Method Summary

Factory<T>	getFactory() Gets the factory.
static <T> Transformer<Object,T>	getInstance(Factory<T> factory) Factory method that performs validation.
T	transform(Object input) Transforms the input by ignoring the input and returning the result of calling the decorated factory.

Methods inherited from class java.lang.Object

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

Constructor Detail

FactoryTransformer

public FactoryTransformer(Factory<T> factory)

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

Parameters:

factory - the factory to call, not null

Method Detail

getInstance

public static <T> Transformer<Object,T> getInstance(Factory<T> factory)

Factory method that performs validation.

Parameters:

factory - the factory to call, not null

Returns:

the factory transformer

Throws:

IllegalArgumentException - if the factory is null

transform

public T transform(Object input)

Transforms the input by ignoring the input and returning the result of calling the decorated factory.

Specified by:

transform in interface Transformer<Object,T>

Parameters:

input - the input object to transform

Returns:

the transformed result

getFactory

public Factory<T> getFactory()

Gets the factory.

Returns:

the factory

Since:

Commons Collections 3.1