Module powerunit.exceptions

Package ch.powerunit.extensions.exceptions

Interface IntUnaryOperatorWithException<E extends Exception>

Type Parameters:

E - the type of the potential exception of the function

All Superinterfaces:

ExceptionHandlerSupport<F,F>, PrimitiveReturnExceptionHandlerSupport<IntUnaryOperator>

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 IntUnaryOperatorWithException<E extends Exception>
extends PrimitiveReturnExceptionHandlerSupport<IntUnaryOperator>

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

General contract

• int applyAsInt(int operand) throws E - The functional method.
• uncheck - Return a IntUnaryOperator
• lift - Return a IntUnaryOperator
• ignore - Return a IntUnaryOperator

See Also:

IntUnaryOperator

Method Summary

Modifier and Type	Method	Description
default IntUnaryOperatorWithException<E>	andThen(IntUnaryOperatorWithException<? extends E> after)	Returns a composed operator that first applies this operator to its input, and then applies the after operator to the result.
int	applyAsInt(int operand)	Applies this operator to the given operand.
default IntUnaryOperatorWithException<E>	compose(IntUnaryOperatorWithException<? 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> IntUnaryOperatorWithException<E>	failing(Supplier<E> exceptionBuilder)	Returns a function that always throw exception.
static <E extends Exception> IntUnaryOperatorWithException<E>	identity()	Returns a unary operator that always returns its input argument.
static <E extends Exception> IntUnaryOperator	ignored(IntUnaryOperatorWithException<E> function)	Converts a IntUnaryOperatorWithException to a lifted IntUnaryOperator returning 0 in case of exception.
static <E extends Exception> IntUnaryOperator	lifted(IntUnaryOperatorWithException<E> function)	Converts a IntUnaryOperatorWithException to a lifted IntUnaryOperator using 0 as return value in case of error.
static <E extends Exception> IntUnaryOperator	unchecked(IntUnaryOperatorWithException<E> function)	Converts a IntUnaryOperatorException to a IntUnaryOperator that wraps exception to RuntimeException.
static <E extends Exception> IntUnaryOperator	unchecked(IntUnaryOperatorWithException<E> function, Function<Exception,RuntimeException> exceptionMapper)	Converts a IntUnaryOperatorWithException to a IntUnaryOperator that wraps exception to RuntimeException by using the provided mapping function.
default IntUnaryOperator	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

applyAsInt

int applyAsInt(int operand)
        throws E extends Exception

Applies this operator to the given operand.

Parameters:

operand - the operand

Returns:

the operator result

Throws:

E - any exception

E extends Exception

See Also:

IntUnaryOperator.applyAsInt(int)

uncheckOrIgnore

default IntUnaryOperator 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 IntUnaryOperatorWithException<E> compose(IntUnaryOperatorWithException<? 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(IntUnaryOperatorWithException)

andThen

default IntUnaryOperatorWithException<E> andThen(IntUnaryOperatorWithException<? 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(IntUnaryOperatorWithException)

identity

static <E extends Exception> IntUnaryOperatorWithException<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> IntUnaryOperatorWithException<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> IntUnaryOperator unchecked(IntUnaryOperatorWithException<E> function)

Converts a IntUnaryOperatorException to a IntUnaryOperator 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(IntUnaryOperatorWithException, Function)

unchecked

static <E extends Exception> IntUnaryOperator unchecked(IntUnaryOperatorWithException<E> function,
                                                        Function<Exception,RuntimeException> exceptionMapper)

Converts a IntUnaryOperatorWithException to a IntUnaryOperator 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(IntUnaryOperatorWithException)

lifted

static <E extends Exception> IntUnaryOperator lifted(IntUnaryOperatorWithException<E> function)

Converts a IntUnaryOperatorWithException to a lifted IntUnaryOperator 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> IntUnaryOperator ignored(IntUnaryOperatorWithException<E> function)

Converts a IntUnaryOperatorWithException to a lifted IntUnaryOperator 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()