Module powerunit.exceptions

Package ch.powerunit.extensions.exceptions

Interface BinaryOperatorWithException<T,E extends Exception>

Type Parameters:

T - the type of the operands and result of the operator

E - the type of the potential exception of the function

All Superinterfaces:

BiFunctionWithException<T,T,T,E>, ExceptionHandlerSupport<T,E>, ObjectReturnExceptionHandlerSupport<BiFunction<T,U,R>,BiFunction<T,U,Optional<R>>,BiFunction<T,U,CompletionStage<R>>,R>

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 BinaryOperatorWithException<T,E extends Exception>
extends BiFunctionWithException<T,T,T,E>

Represents an operation upon two operands of the same type, that may throw exception, producing a result of the same type as the operands. This is a specialization of BiFunctionWithException for the case where the operands and the result are all of the same type.

As this interface must return the same type of the input, a lifted version which returns Optional is not possible.

General contract

• T apply(T t, T u) throws E - The functional method.
• uncheck - Return a BinaryOperator<T>
• lift - Return a BiFunction<T,T,<Optional<T>>
• ignore - Return a BinaryOperator<T>

See Also:

BiFunctionWithException, BinaryOperator

Method Summary

Modifier and Type	Method	Description
static <T,E extends Exception> BinaryOperatorWithException<T,E>	failing(Supplier<E> exceptionBuilder)	Returns a binary operator that always throw exception.
default BinaryOperator<T>	ignore()	Converts this BinaryOperatorWithException to a lifted BinaryOperator returning null in case of exception.
static <T,E extends Exception> BinaryOperator<T>	ignored(BinaryOperatorWithException<T,E> function)	Converts a BinaryOperatorWithException to a lifted BinaryOperator returning null in case of exception.
static <T,E extends Exception> BiFunction<T,T,Optional<T>>	lifted(BinaryOperatorWithException<T,E> function)	Converts a BinaryOperatorWithException to a lifted Function returning an optional in case of exception.
default BinaryOperator<T>	uncheck()	Converts this BinaryOperatorWithException to a BinaryOperator that convert exception to RuntimeException.
static <T,E extends Exception> BinaryOperator<T>	unchecked(BinaryOperatorWithException<T,E> function)	Converts a BinaryOperatorWithException to a BinaryOperator that convert exception to RuntimeException.
static <T,E extends Exception> BinaryOperator<T>	unchecked(BinaryOperatorWithException<T,E> function, Function<Exception,RuntimeException> exceptionMapper)	Converts a BinaryOperatorWithException to a BinaryOperator that convert exception to RuntimeException by using the provided mapping function.

Methods inherited from interface ch.powerunit.extensions.exceptions.BiFunctionWithException

andThen, apply, asBiConsumer, asBiConsumer, asFunction, asFunction, ignored, lift, lifted, stage, staged, unchecked, unchecked

Methods inherited from interface ch.powerunit.extensions.exceptions.ExceptionHandlerSupport

exceptionMapper, exceptionMapperFor

Methods inherited from interface ch.powerunit.extensions.exceptions.ObjectReturnExceptionHandlerSupport

notThrowingHandler, staged, throwingHandler, unchecked

Method Detail

uncheck

default BinaryOperator<T> uncheck()

Converts this BinaryOperatorWithException to a BinaryOperator that convert exception to RuntimeException.

Specified by:

uncheck in interface BiFunctionWithException<T,T,T,E extends Exception>

Specified by:

uncheck in interface ExceptionHandlerSupport<T,E extends Exception>

Specified by:

uncheck in interface ObjectReturnExceptionHandlerSupport<BiFunction<T,U,R>,BiFunction<T,U,Optional<R>>,BiFunction<T,U,CompletionStage<R>>,R>

Returns:

the unchecked function

See Also:

unchecked(BinaryOperatorWithException), unchecked(BinaryOperatorWithException, Function)

ignore

default BinaryOperator<T> ignore()

Converts this BinaryOperatorWithException to a lifted BinaryOperator returning null in case of exception.

Specified by:

ignore in interface BiFunctionWithException<T,T,T,E extends Exception>

Specified by:

ignore in interface ExceptionHandlerSupport<T,E extends Exception>

Specified by:

ignore in interface ObjectReturnExceptionHandlerSupport<BiFunction<T,U,R>,BiFunction<T,U,Optional<R>>,BiFunction<T,U,CompletionStage<R>>,R>

Returns:

the function that ignore error

See Also:

ignored(BinaryOperatorWithException)

failing

static <T,E extends Exception> BinaryOperatorWithException<T,E> failing(Supplier<E> exceptionBuilder)

Returns a binary operator that always throw exception.

Type Parameters:

T - the type of the operands and result of the operator

E - the type of the exception

Parameters:

exceptionBuilder - the supplier to create the exception

Returns:

a function that always throw exception

unchecked

static <T,E extends Exception> BinaryOperator<T> unchecked(BinaryOperatorWithException<T,E> function)

Converts a BinaryOperatorWithException to a BinaryOperator that convert exception to RuntimeException.

Type Parameters:

T - the type of the operands and result of the operator

E - the type of the potential exception

Parameters:

function - to be unchecked

Returns:

the unchecked exception

Throws:

NullPointerException - if function is null

See Also:

uncheck(), unchecked(BinaryOperatorWithException, Function)

unchecked

static <T,E extends Exception> BinaryOperator<T> unchecked(BinaryOperatorWithException<T,E> function,
                                                           Function<Exception,RuntimeException> exceptionMapper)

Converts a BinaryOperatorWithException to a BinaryOperator that convert exception to RuntimeException by using the provided mapping function.

Type Parameters:

T - the type of the operands and result of the operator

E - the type of the potential exception

Parameters:

function - the be unchecked

exceptionMapper - a function to convert the exception to the runtime exception.

Returns:

the unchecked exception

Throws:

NullPointerException - if function or exceptionMapper is null

See Also:

uncheck(), unchecked(BinaryOperatorWithException)

lifted

static <T,E extends Exception> BiFunction<T,T,Optional<T>> lifted(BinaryOperatorWithException<T,E> function)

Converts a BinaryOperatorWithException to a lifted Function returning an optional in case of exception.

Type Parameters:

T - the type of the operands and result of the operator

E - the type of the potential exception

Parameters:

function - the be unchecked

Returns:

the lifted function

Throws:

NullPointerException - if function is null

See Also:

ignore()

ignored

static <T,E extends Exception> BinaryOperator<T> ignored(BinaryOperatorWithException<T,E> function)

Converts a BinaryOperatorWithException to a lifted BinaryOperator returning null in case of exception.

Type Parameters:

T - the type of the operands and result of the operator

E - the type of the potential exception

Parameters:

function - the be unchecked

Returns:

the lifted function

Throws:

NullPointerException - if function is null

See Also:

ignore()