org.apache.commons.collections4.functors
Class FactoryTransformer<I,O>

java.lang.Object
  org.apache.commons.collections4.functors.FactoryTransformer<I,O>

All Implemented Interfaces:

Serializable, Transformer<I,O>

public class FactoryTransformer<I,O>
extends Object
implements Transformer<I,O>, Serializable

Transformer implementation that calls a Factory and returns the result.

Since:

3.0

Version:

$Id: FactoryTransformer.java 1477798 2013-04-30 19:49:02Z tn $

See Also:

Serialized Form

FactoryTransformer

public FactoryTransformer(Factory<? extends O> factory)

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

Parameters:

factory - the factory to call, not null

factoryTransformer

public static <I,O> Transformer<I,O> factoryTransformer(Factory<? extends O> factory)

Factory method that performs validation.

Type Parameters:

I - the input type

O - the output type

Parameters:

factory - the factory to call, not null

Returns:

the factory transformer

Throws:

IllegalArgumentException - if the factory is null

transform

public O transform(I input)

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

Specified by:

transform in interface Transformer<I,O>

Parameters:

input - the input object to transform

Returns:

the transformed result

getFactory

public Factory<? extends O> getFactory()

Gets the factory.

Returns:

the factory

Since:

3.1