Package no.digipost.function

Interface ThrowingFunction<T,R,X extends Throwable>

Type Parameters:

T - the type of the input to the function

R - the type of the result of the function

X - the exception type which may be thrown when applying the function

All Known Subinterfaces:

ThrowingFunction.OfUncheckedException<T,R,X>

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,X extends Throwable>

Represents a function that accepts one argument and produces a result, and it may throw an exception.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	ThrowingFunction.OfUncheckedException<T,R,X extends RuntimeException>	Unification of ThrowingFunction and Function.

Method Summary

Modifier and Type	Method	Description
default <V> ThrowingFunction<T,V,X>	andThen(ThrowingFunction<? super R,V,? extends X> after)
R	apply(T t)
default Function<T,R>	asUnchecked()
default <V> ThrowingFunction<V,R,X>	compose(ThrowingFunction<? super V,? extends T,? extends X> before)
static <T> ThrowingFunction.OfUncheckedException<T,T,RuntimeException>	identity()	Returns a function that always returns its input argument.
default Function<T,Optional<R>>	ifException(BiConsumer<? super T,Exception> exceptionHandler)
default Function<T,Optional<R>>	ifException(Consumer<Exception> exceptionHandler)
default Function<T,R>	ifExceptionApply(BiFunction<? super T,Exception,? extends R> exceptionMapper)
default Function<T,R>	ifExceptionApply(Function<Exception,? extends R> exceptionMapper)
default Function<T,R>	ifExceptionThrow(BiFunction<? super T,? super Exception,? extends RuntimeException> exceptionMapper)
default Function<T,R>	ifExceptionThrow(Function<? super Exception,? extends RuntimeException> exceptionMapper)

Method Details

identity

static <T>
ThrowingFunction.OfUncheckedException<T,T,RuntimeException> identity()

Returns a function that always returns its input argument.

Type Parameters:

T - the type of the input and output objects to the function

Returns:

a function that always returns its input argument

apply

R apply(T t)
 throws X

Throws:

X extends Throwable

asUnchecked

default Function<T,R> asUnchecked()

ifExceptionThrow

default Function<T,R> ifExceptionThrow(Function<? super Exception,? extends RuntimeException> exceptionMapper)

ifExceptionThrow

default Function<T,R> ifExceptionThrow(BiFunction<? super T,? super Exception,? extends RuntimeException> exceptionMapper)

ifException

default Function<T,Optional<R>> ifException(Consumer<Exception> exceptionHandler)

ifException

default Function<T,Optional<R>> ifException(BiConsumer<? super T,Exception> exceptionHandler)

ifExceptionApply

default Function<T,R> ifExceptionApply(Function<Exception,? extends R> exceptionMapper)

ifExceptionApply

default Function<T,R> ifExceptionApply(BiFunction<? super T,Exception,? extends R> exceptionMapper)

andThen

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

compose

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