Module io.helidon.common

Package io.helidon.common

Class Functions

java.lang.Object

io.helidon.common.Functions

public final class Functions
extends Object

Functional interfaces required to complement the Runnable, Callable, and Supplier to help with checked exceptions in lambdas.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	Functions.CheckedBiConsumer<T,U,E extends Throwable>	Checked bi-consumer.
static interface	Functions.CheckedConsumer<T,E extends Throwable>	Checked consumer.
static interface	Functions.CheckedFunction<T,U,E extends Throwable>	Checked consumer.
static interface	Functions.CheckedRunnable<E extends Throwable>	Checked runnable.
static interface	Functions.CheckedSupplier<T,E extends Throwable>	Checked supplier.

Method Summary

Modifier and Type	Method	Description
static <T, U, E extends Throwable> BiConsumer<T,U>	unchecked(Functions.CheckedBiConsumer<T,U,E> consumer)	Wrap a Functions.CheckedBiConsumer into a BiConsumer.
static <T, E extends Throwable> Consumer<T>	unchecked(Functions.CheckedConsumer<T,E> consumer)	Wrap a Functions.CheckedConsumer into a Consumer.
static <T, U, E extends Throwable> Function<T,U>	unchecked(Functions.CheckedFunction<T,U,E> function)	Wrap a Functions.CheckedBiConsumer into a BiConsumer.
static <E extends Throwable> Runnable	unchecked(Functions.CheckedRunnable<E> runnable)	Wrap a Functions.CheckedRunnable into a Runnable.
static <T, E extends Throwable> Supplier<T>	unchecked(Functions.CheckedSupplier<T,E> supplier)	Wrap a Functions.CheckedSupplier into a Supplier.
static Throwable	unwrap(Throwable ex)	Unwrap a checked exception wrapped with UncheckedException.
static RuntimeException	wrap(Throwable ex)	Wrap an exception wrapped with UncheckedException if checked.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

unchecked

public static <T,
E extends Throwable> Supplier<T> unchecked(Functions.CheckedSupplier<T,E> supplier)

Wrap a Functions.CheckedSupplier into a Supplier.

Type Parameters:

T - supplier type

E - checked exception type

Parameters:

supplier - checked supplier

Returns:

Supplier

unchecked

public static <E extends Throwable> Runnable unchecked(Functions.CheckedRunnable<E> runnable)

Wrap a Functions.CheckedRunnable into a Runnable.

Type Parameters:

E - checked exception type

Parameters:

runnable - checked runnable

Returns:

Consumer

unchecked

public static <T,
E extends Throwable> Consumer<T> unchecked(Functions.CheckedConsumer<T,E> consumer)

Wrap a Functions.CheckedConsumer into a Consumer.

Type Parameters:

T - item type

E - checked exception type

Parameters:

consumer - checked consumer

Returns:

Consumer

unchecked

public static <T,
U,
E extends Throwable>
BiConsumer<T,U> unchecked(Functions.CheckedBiConsumer<T,U,E> consumer)

Wrap a Functions.CheckedBiConsumer into a BiConsumer.

Type Parameters:

T - 1st item type

U - 2nd item type

E - checked exception type

Parameters:

consumer - checked consumer

Returns:

BiConsumer

unchecked

public static <T,
U,
E extends Throwable>
Function<T,U> unchecked(Functions.CheckedFunction<T,U,E> function)

Wrap a Functions.CheckedBiConsumer into a BiConsumer.

Type Parameters:

T - 1st item type

U - 2nd item type

E - checked exception type

Parameters:

function - checked function

Returns:

Function

wrap

public static RuntimeException wrap(Throwable ex)

Wrap an exception wrapped with UncheckedException if checked.

Parameters:

ex - exception to wrap

Returns:

exception

unwrap

public static Throwable unwrap(Throwable ex)

Unwrap a checked exception wrapped with UncheckedException.

Parameters:

ex - exception to unwrap

Returns:

exception