Package org.apache.commons.collections4.functors

Class ClosureTransformer<T>

java.lang.Object

org.apache.commons.collections4.functors.ClosureTransformer<T>

All Implemented Interfaces:

Serializable, Transformer<T,T>

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

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

Since:

3.0

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
ClosureTransformer(Closure<? super T> closure)	Constructor that performs no validation.

Method Summary

Modifier and Type	Method	Description
static <T> Transformer<T,T>	closureTransformer(Closure<? super T> closure)	Factory method that performs validation.
Closure<? super T>	getClosure()	Gets the closure.
T	transform(T input)	Transforms the input to result by executing a closure.

Methods inherited from class java.lang.Object

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

Constructor Details

ClosureTransformer

public ClosureTransformer(Closure<? super T> closure)

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

Parameters:

closure - the closure to call, not null

Method Details

closureTransformer

public static <T> Transformer<T,T> closureTransformer(Closure<? super T> closure)

Factory method that performs validation.

Type Parameters:

T - the type of the object to transform

Parameters:

closure - the closure to call, not null

Returns:

the closure transformer

Throws:

NullPointerException - if the closure is null

getClosure

public Closure<? super T> getClosure()

Gets the closure.

Returns:

the closure

Since:

3.1

transform

public T transform(T input)

Transforms the input to result by executing a closure.

Specified by:

transform in interface Transformer<T,T>

Parameters:

input - the input object to transform

Returns:

the transformed result