Package org.apache.commons.collections4.functors

Class ClosureTransformer<T>

java.lang.Object

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

Type Parameters:

T - the type of the input and result to the function.

All Implemented Interfaces:

Serializable, Function<T,T>, 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

Methods inherited from interface java.util.function.Function

andThen, compose

Methods inherited from interface org.apache.commons.collections4.Transformer

apply

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