com.pivovarit.function

Interface ThrowingSupplier<T,E extends Exception>

Type Parameters:

T - the type of the output to the function

E - the type of the thrown checked exception

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 ThrowingSupplier<T,E extends Exception>

Represents a function that accepts zero arguments and returns some value. Function might throw a checked exception instance.

Author:

Grzegorz Piwowarek

Method Summary

Modifier and Type	Method and Description
default ThrowingFunction<Void,T,E>	asFunction()
T	get()
default Supplier<Optional<T>>	lift()
static <T> Supplier<Optional<T>>	lifted(ThrowingSupplier<T,?> supplier)
static <T1> Supplier<T1>	sneaky(ThrowingSupplier<T1,?> supplier) Returns a new Supplier instance which rethrows the checked exception using the Sneaky Throws pattern
default Supplier<T>	uncheck()
static <T> Supplier<T>	unchecked(ThrowingSupplier<T,?> supplier)

Method Detail

get

T get()
throws E extends Exception

Throws:

E extends Exception

asFunction

default ThrowingFunction<Void,T,E> asFunction()

Returns:

this Consumer instance as a new Function instance

unchecked

static <T> Supplier<T> unchecked(ThrowingSupplier<T,?> supplier)

lifted

static <T> Supplier<Optional<T>> lifted(ThrowingSupplier<T,?> supplier)

sneaky

static <T1> Supplier<T1> sneaky(ThrowingSupplier<T1,?> supplier)

Returns a new Supplier instance which rethrows the checked exception using the Sneaky Throws pattern

Returns:

Supplier instance that rethrows the checked exception using the Sneaky Throws pattern

uncheck

default Supplier<T> uncheck()

Returns:

a new Supplier instance which wraps thrown checked exception instance into a RuntimeException

lift

default Supplier<Optional<T>> lift()

Returns:

a new Supplier that returns the result as an Optional instance. In case of a failure or null, empty Optional is returned