com.pivovarit.function

Interface ThrowingFunction<T,R,E extends Exception>

Type Parameters:

T - the type of the input to the function

R - the type of the result of the function

E - the type of the thrown checked exception

All Known Subinterfaces:

ThrowingUnaryOperator<T,E>

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface ThrowingFunction<T,R,E extends Exception>

Represents a function that accepts one argument and returns a value; Function might throw a checked exception instance.

Author:

Grzegorz Piwowarek

Method Summary

Modifier and Type	Method and Description
default <V> ThrowingFunction<T,V,E>	andThen(ThrowingFunction<? super R,? extends V,? extends E> after)
R	apply(T arg)
default <V> ThrowingFunction<V,R,E>	compose(ThrowingFunction<? super V,? extends T,? extends E> before)
default Function<T,Optional<R>>	lift()
static <T,R> Function<T,Optional<R>>	lifted(ThrowingFunction<T,R,?> f)
static <T1,R> Function<T1,R>	sneaky(ThrowingFunction<? super T1,? extends R,?> function)
default Function<T,R>	uncheck()
static <T,R> Function<T,R>	unchecked(ThrowingFunction<T,R,?> f)

Method Detail

apply

R apply(T arg)
 throws E extends Exception

Throws:

E extends Exception

lifted

static <T,R> Function<T,Optional<R>> lifted(ThrowingFunction<T,R,?> f)

Returns:

a Function that returns the result of the given function as an Optional instance. In case of a failure, empty Optional is returned

unchecked

static <T,R> Function<T,R> unchecked(ThrowingFunction<T,R,?> f)

sneaky

static <T1,R> Function<T1,R> sneaky(ThrowingFunction<? super T1,? extends R,?> function)

compose

default <V> ThrowingFunction<V,R,E> compose(ThrowingFunction<? super V,? extends T,? extends E> before)

andThen

default <V> ThrowingFunction<T,V,E> andThen(ThrowingFunction<? super R,? extends V,? extends E> after)

lift

default Function<T,Optional<R>> lift()

uncheck

default Function<T,R> uncheck()