org.apache.commons.collections.functors
Class FactoryTransformer

java.lang.Object
  |
  +--org.apache.commons.collections.functors.FactoryTransformer
All Implemented Interfaces:
Serializable, Transformer

public class FactoryTransformer
extends Object
implements Transformer, Serializable

Transformer implementation that calls a Factory and returns the result.

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
FactoryTransformer(Factory factory)
          Constructor that performs no validation.
 
Method Summary
static Transformer getInstance(Factory factory)
          Factory method that performs validation.
 Object transform(Object input)
          Call the 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 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 Transformer getInstance(Factory 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 Object transform(Object input)
Call the factory.
Specified by:
transform in interface Transformer
Following copied from interface: org.apache.commons.collections.Transformer
Parameters:
input - the object to be transformed
Returns:
a transformed object
Throws:
ClassCastException - (runtime) if the input is the wrong class
IllegalArgumentException - (runtime) if the input is invalid
FunctorException - (runtime) if the transform cannot be completed


Copyright © 2001-2004 Apache Software Foundation. All Rights Reserved.