Package org.apache.commons.collections4.functors

Class ExceptionTransformer<T,R>

java.lang.Object

org.apache.commons.collections4.functors.ExceptionTransformer<T,R>

Type Parameters:

T - the type of the input to the function.

R - the type of the result of the function.

All Implemented Interfaces:

Serializable, Function<T,R>, Transformer<T,R>

public final class ExceptionTransformer<T,R>
extends Object
implements Transformer<T,R>, Serializable

Transformer implementation that always throws an exception.

Since:

3.0

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final Transformer	INSTANCE	Singleton predicate instance

Method Summary

Modifier and Type	Method	Description
static <I, O> Transformer<I,O>	exceptionTransformer()	Factory returning the singleton instance.
R	transform(T input)	Transforms the input to result by cloning it.

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

Field Details

INSTANCE

public static final Transformer INSTANCE

Singleton predicate instance

Method Details

exceptionTransformer

public static <I,
O> Transformer<I,O> exceptionTransformer()

Factory returning the singleton instance.

Type Parameters:

I - the input type

O - the output type

Returns:

the singleton instance

Since:

3.1

transform

public R transform(T input)

Transforms the input to result by cloning it.

Specified by:

transform in interface Transformer<T,R>

Parameters:

input - the input object to transform

Returns:

never

Throws:

FunctorException - always