org.apache.commons.collections.functors
Class InstantiateTransformer

java.lang.Object
  org.apache.commons.collections.functors.InstantiateTransformer

All Implemented Interfaces:

Serializable, Transformer<Class,Object>

public class InstantiateTransformer
extends Object
implements Transformer<Class,Object>, Serializable

Transformer implementation that creates a new object instance by reflection.

Since:

Commons Collections 3.0

Version:

$Revision: 1.1.1.1 $ $Date: 2005/05/23 04:34:25 $

Author:

Matt Hall, John Watkinson, Stephen Colebourne

See Also:

Serialized Form

Field Summary

static InstantiateTransformer

NO_ARG_INSTANCE Singleton instance that uses the no arg constructor

Constructor Summary

InstantiateTransformer(Class[] paramTypes, Object[] args)
Constructor that performs no validation.

Method Summary

static InstantiateTransformer	getInstance(Class[] paramTypes, Object[] args) Transformer method that performs validation.
Object	transform(Class input) Transforms the input Class object to a result by instantiation.

Methods inherited from class java.lang.Object

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

Field Detail

NO_ARG_INSTANCE

public static final InstantiateTransformer NO_ARG_INSTANCE

Singleton instance that uses the no arg constructor

Constructor Detail

InstantiateTransformer

public InstantiateTransformer(Class[] paramTypes,
                              Object[] args)

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

Parameters:

paramTypes - the constructor parameter types, not cloned

args - the constructor arguments, not cloned

Method Detail

getInstance

public static InstantiateTransformer getInstance(Class[] paramTypes,
                                                 Object[] args)

Transformer method that performs validation.

Parameters:

paramTypes - the constructor parameter types

args - the constructor arguments

Returns:

an instantiate transformer

transform

public Object transform(Class input)

Transforms the input Class object to a result by instantiation.

Specified by:

transform in interface Transformer<Class,Object>

Parameters:

input - the input object to transform

Returns:

the transformed result