io.smallrye.mutiny.groups

Class UniAwaitOptional<T>

java.lang.Object

io.smallrye.mutiny.groups.UniAwaitOptional<T>

Type Parameters:

T - the type of the item

public class UniAwaitOptional<T>
extends Object

Likes UniAwait but wrapping the item event into an Optional. This optional is empty if the Uni fires null.

See Also:

Uni.await()

Constructor Summary

Constructors

Constructor and Description
UniAwaitOptional(Uni<T> upstream)

Method Summary

Modifier and Type	Method and Description
Optional<T>	atMost(Duration duration) Subscribes to the Uni and waits (blocking the caller thread) at most the given duration until an item or failure is fired by the upstream uni.
Optional<T>	indefinitely() Subscribes to the Uni and waits (blocking the caller thread) indefinitely until a item event is fired or a failure event is fired by the upstream uni.

Methods inherited from class java.lang.Object

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

Constructor Detail

UniAwaitOptional

public UniAwaitOptional(Uni<T> upstream)

Method Detail

indefinitely

public Optional<T> indefinitely()

Subscribes to the Uni and waits (blocking the caller thread) indefinitely until a item event is fired or a failure event is fired by the upstream uni.

If the Uni fires an item, it returns that item wrapped into an Optional. If the item is null the returned optional is empty. If the Uni fires a failure, the original exception is thrown (wrapped in a CompletionException it's a checked exception).

Note that each call to this method triggers a new subscription.

Returns:

the item from the Uni wrapped into an Optional, empty if the Uni is resolved with null

atMost

public Optional<T> atMost(Duration duration)

Subscribes to the Uni and waits (blocking the caller thread) at most the given duration until an item or failure is fired by the upstream uni.

If the Uni fires an item, it returns that item wrapped into an Optional. If the item is null the returned optional is empty. If the Uni fires a failure, the original exception is thrown (wrapped in a CompletionException it's a checked exception). If the timeout is reached before completion, a TimeoutException is thrown.

Note that each call to this method triggers a new subscription.

Parameters:

duration - the duration, must not be null, must not be negative or zero.

Returns:

the item from the Uni, potentially null