Module powerunit.exceptions

Package ch.powerunit.extensions.exceptions

Interface DoubleUnaryOperatorWithException<E extends Exception>

Type Parameters:

E - the type of the potential exception of the function

All Superinterfaces:

ExceptionHandlerSupport<F,F>, PrimitiveReturnExceptionHandlerSupport<DoubleUnaryOperator>

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 DoubleUnaryOperatorWithException<E extends Exception>
extends PrimitiveReturnExceptionHandlerSupport<DoubleUnaryOperator>

Represents an operation on a single double-valued operand that may thrown exception and produces a double-valued result. This is the primitive type specialization of UnaryOperatorWithException for double.

General contract

• double applyAsDouble(double operand) throws E - The functional method.
• uncheck - Return a DoubleUnaryOperator
• lift - Return a DoubleUnaryOperator
• ignore - Return a DoubleUnaryOperator

See Also:

DoubleUnaryOperator

Method Summary

Modifier and Type	Method	Description
default DoubleUnaryOperatorWithException<E>	andThen(DoubleUnaryOperatorWithException<? extends E> after)	Returns a composed operator that first applies this operator to its input, and then applies the after operator to the result.
double	applyAsDouble(double operand)	AApplies this operator to the given operand.
default DoubleUnaryOperatorWithException<E>	compose(DoubleUnaryOperatorWithException<? extends E> before)	Returns a composed operator that first applies the before operator to its input, and then applies this operator to the result.
static <E extends Exception> DoubleUnaryOperatorWithException<E>	failing(Supplier<E> exceptionBuilder)	Returns a function that always throw exception.
static <E extends Exception> DoubleUnaryOperatorWithException<E>	identity()	Returns a unary operator that always returns its input argument.
static <E extends Exception> DoubleUnaryOperator	ignored(DoubleUnaryOperatorWithException<E> function)	Converts a DoubleUnaryOperatorWithException to a lifted DoubleUnaryOperator returning 0 in case of exception.
static <E extends Exception> DoubleUnaryOperator	lifted(DoubleUnaryOperatorWithException<E> function)	Converts a DoubleUnaryOperatorWithException to a lifted DoubleUnaryOperator using 0 as return value in case of error.
static <E extends Exception> DoubleUnaryOperator	unchecked(DoubleUnaryOperatorWithException<E> function)	Converts a DoubleUnaryOperatorException to a DoubleUnaryOperator that wraps exception to RuntimeException.
static <E extends Exception> DoubleUnaryOperator	unchecked(DoubleUnaryOperatorWithException<E> function, Function<Exception,RuntimeException> exceptionMapper)	Converts a DoubleUnaryOperatorWithException to a DoubleUnaryOperator that wraps exception to RuntimeException by using the provided mapping function.
default DoubleUnaryOperator	uncheckOrIgnore(boolean uncheck)	Used internally to implements the ignore or uncheck operation.

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

exceptionMapper, exceptionMapperFor

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

handleException, ignore, lift, uncheck

Method Detail

applyAsDouble

double applyAsDouble(double operand)
              throws E extends Exception

AApplies this operator to the given operand.

Parameters:

operand - the operand

Returns:

the operator result

Throws:

E - any exception

E extends Exception

See Also:

DoubleUnaryOperator.applyAsDouble(double)

uncheckOrIgnore

default DoubleUnaryOperator uncheckOrIgnore(boolean uncheck)

Description copied from interface: PrimitiveReturnExceptionHandlerSupport

Used internally to implements the ignore or uncheck operation.

Specified by:

uncheckOrIgnore in interface PrimitiveReturnExceptionHandlerSupport<E extends Exception>

Parameters:

uncheck - create unchecked version of the function when true, else ignored version.

Returns:

the function

compose

default DoubleUnaryOperatorWithException<E> compose(DoubleUnaryOperatorWithException<? extends E> before)

Returns a composed operator that first applies the before operator to its input, and then applies this operator to the result. If evaluation of either operator throws an exception, it is relayed to the caller of the composed operator.

Parameters:

before - the operator to apply before this operator is applied

Returns:

a composed operator that first applies the before operator and then applies this operator

Throws:

NullPointerException - if before is null

See Also:

andThen(DoubleUnaryOperatorWithException)

andThen

default DoubleUnaryOperatorWithException<E> andThen(DoubleUnaryOperatorWithException<? extends E> after)

Returns a composed operator that first applies this operator to its input, and then applies the after operator to the result. If evaluation of either operator throws an exception, it is relayed to the caller of the composed operator.

Parameters:

after - the operator to apply after this operator is applied

Returns:

a composed operator that first applies this operator and then applies the after operator

Throws:

NullPointerException - if after is null

See Also:

compose(DoubleUnaryOperatorWithException)

identity

static <E extends Exception> DoubleUnaryOperatorWithException<E> identity()

Returns a unary operator that always returns its input argument.

Type Parameters:

E - the exception that may be thrown

Returns:

a unary operator that always returns its input argument

failing

static <E extends Exception> DoubleUnaryOperatorWithException<E> failing(Supplier<E> exceptionBuilder)

Returns a function that always throw exception.

Type Parameters:

E - the type of the exception

Parameters:

exceptionBuilder - the supplier to create the exception

Returns:

a function that always throw exception

unchecked

static <E extends Exception> DoubleUnaryOperator unchecked(DoubleUnaryOperatorWithException<E> function)

Converts a DoubleUnaryOperatorException to a DoubleUnaryOperator that wraps exception to RuntimeException.

Type Parameters:

E - the type of the potential exception

Parameters:

function - to be unchecked

Returns:

the unchecked function

Throws:

NullPointerException - if function is null

See Also:

PrimitiveReturnExceptionHandlerSupport.uncheck(), unchecked(DoubleUnaryOperatorWithException, Function)

unchecked

static <E extends Exception> DoubleUnaryOperator unchecked(DoubleUnaryOperatorWithException<E> function,
                                                           Function<Exception,RuntimeException> exceptionMapper)

Converts a DoubleUnaryOperatorWithException to a DoubleUnaryOperator that wraps exception to RuntimeException by using the provided mapping function.

Type Parameters:

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 function

Throws:

NullPointerException - if function or exceptionMapper is null

See Also:

PrimitiveReturnExceptionHandlerSupport.uncheck(), unchecked(DoubleUnaryOperatorWithException)

lifted

static <E extends Exception> DoubleUnaryOperator lifted(DoubleUnaryOperatorWithException<E> function)

Converts a DoubleUnaryOperatorWithException to a lifted DoubleUnaryOperator using 0 as return value in case of error.

Type Parameters:

E - the type of the potential exception

Parameters:

function - to be lifted

Returns:

the lifted function

Throws:

NullPointerException - if function is null

See Also:

PrimitiveReturnExceptionHandlerSupport.lift()

ignored

static <E extends Exception> DoubleUnaryOperator ignored(DoubleUnaryOperatorWithException<E> function)

Converts a DoubleUnaryOperatorWithException to a lifted DoubleUnaryOperator returning 0 in case of exception.

Type Parameters:

E - the type of the potential exception

Parameters:

function - to be lifted

Returns:

the lifted function

Throws:

NullPointerException - if function is null

See Also:

PrimitiveReturnExceptionHandlerSupport.ignore()