VoidChannelPromise (Netty API Reference (4.1.115.Final))

java.lang.Object
- io.netty.util.concurrent.AbstractFuture<Void>
- - io.netty.channel.VoidChannelPromise

All Implemented Interfaces:: ChannelFuture, ChannelPromise, Promise<Void>, Future<Void>

@UnstableApi
public final class VoidChannelPromise
extends AbstractFuture<Void>
implements ChannelPromise

Constructor Summary

Constructors
Constructor and Description

VoidChannelPromise(Channel channel, boolean fireException)
Creates a new instance.

Constructors
Constructor and Description
`VoidChannelPromise(Channel channel, boolean fireException)` Creates a new instance.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`VoidChannelPromise`	`addListener(GenericFutureListener<? extends Future<? super Void>> listener)` Adds the specified listener to this future.
`VoidChannelPromise`	`addListeners(GenericFutureListener<? extends Future<? super Void>>... listeners)` Adds the specified listeners to this future.
`VoidChannelPromise`	`await()` Waits for this future to be completed.
`boolean`	`await(long timeoutMillis)` Waits for this future to be completed within the specified time limit.
`boolean`	`await(long timeout, TimeUnit unit)` Waits for this future to be completed within the specified time limit.
`VoidChannelPromise`	`awaitUninterruptibly()` Waits for this future to be completed without interruption.
`boolean`	`awaitUninterruptibly(long timeoutMillis)` Waits for this future to be completed within the specified time limit without interruption.
`boolean`	`awaitUninterruptibly(long timeout, TimeUnit unit)` Waits for this future to be completed within the specified time limit without interruption.
`boolean`	`cancel(boolean mayInterruptIfRunning)` If the cancellation was successful it will fail the future with a `CancellationException`.
`Throwable`	`cause()` Returns the cause of the failed I/O operation if the I/O operation has failed.
`Channel`	`channel()` Returns a channel where the I/O operation associated with this future takes place.
`Void`	`getNow()` Return the result without blocking.
`boolean`	`isCancellable()` returns `true` if and only if the operation can be cancelled via `Future.cancel(boolean)`.
`boolean`	`isCancelled()`
`boolean`	`isDone()`
`boolean`	`isSuccess()` Returns `true` if and only if the I/O operation was completed successfully.
`boolean`	`isVoid()` Returns `true` if this `ChannelFuture` is a void future and so not allow to call any of the following methods: `ChannelFuture.addListener(GenericFutureListener)` `ChannelFuture.addListeners(GenericFutureListener[])` `ChannelFuture.await()` `Future.await(long, TimeUnit)` ()} `Future.await(long)` ()} `ChannelFuture.awaitUninterruptibly()` `ChannelFuture.sync()` `ChannelFuture.syncUninterruptibly()`
`VoidChannelPromise`	`removeListener(GenericFutureListener<? extends Future<? super Void>> listener)` Removes the first occurrence of the specified listener from this future.
`VoidChannelPromise`	`removeListeners(GenericFutureListener<? extends Future<? super Void>>... listeners)` Removes the first occurrence for each of the listeners from this future.
`VoidChannelPromise`	`setFailure(Throwable cause)` Marks this future as a failure and notifies all listeners.
`VoidChannelPromise`	`setSuccess()`
`VoidChannelPromise`	`setSuccess(Void result)` Marks this future as a success and notifies all listeners.
`boolean`	`setUncancellable()` Make this future impossible to cancel.
`VoidChannelPromise`	`sync()` Waits for this future until it is done, and rethrows the cause of the failure if this future failed.
`VoidChannelPromise`	`syncUninterruptibly()` Waits for this future until it is done, and rethrows the cause of the failure if this future failed.
`boolean`	`tryFailure(Throwable cause)` Marks this future as a failure and notifies all listeners.
`boolean`	`trySuccess()`
`boolean`	`trySuccess(Void result)` Marks this future as a success and notifies all listeners.
`ChannelPromise`	`unvoid()` Returns a new `ChannelPromise` if `ChannelFuture.isVoid()` returns `true` otherwise itself.

Methods inherited from class io.netty.util.concurrent.AbstractFuture
get, get

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.concurrent.Future
get, get

- Constructor Detail
  - VoidChannelPromise
```
public VoidChannelPromise(Channel channel,
                          boolean fireException)
```
    Creates a new instance.
    
    Parameters:
    
    channel - the Channel associated with this future
- Method Detail
  - addListener
```
public VoidChannelPromise addListener(GenericFutureListener<? extends Future<? super Void>> listener)
```
    Description copied from interface: Future
    
    Adds the specified listener to this future. The specified listener is notified when this future is done. If this future is already completed, the specified listener is notified immediately.
    
    Specified by:
    
    addListener in interface ChannelFuture
    
    Specified by:
    
    addListener in interface ChannelPromise
    
    Specified by:
    
    addListener in interface Promise<Void>
  - addListeners
```
public VoidChannelPromise addListeners(GenericFutureListener<? extends Future<? super Void>>... listeners)
```
    Description copied from interface: Future
    
    Adds the specified listeners to this future. The specified listeners are notified when this future is done. If this future is already completed, the specified listeners are notified immediately.
    
    Specified by:
    
    addListeners in interface ChannelFuture
    
    Specified by:
    
    addListeners in interface ChannelPromise
    
    Specified by:
    
    addListeners in interface Promise<Void>
  - removeListener
```
public VoidChannelPromise removeListener(GenericFutureListener<? extends Future<? super Void>> listener)
```
    Description copied from interface: Future
    
    Removes the first occurrence of the specified listener from this future. The specified listener is no longer notified when this future is done. If the specified listener is not associated with this future, this method does nothing and returns silently.
    
    Specified by:
    
    removeListener in interface ChannelFuture
    
    Specified by:
    
    removeListener in interface ChannelPromise
    
    Specified by:
    
    removeListener in interface Promise<Void>
  - removeListeners
```
public VoidChannelPromise removeListeners(GenericFutureListener<? extends Future<? super Void>>... listeners)
```
    Description copied from interface: Future
    
    Removes the first occurrence for each of the listeners from this future. The specified listeners are no longer notified when this future is done. If the specified listeners are not associated with this future, this method does nothing and returns silently.
    
    Specified by:
    
    removeListeners in interface ChannelFuture
    
    Specified by:
    
    removeListeners in interface ChannelPromise
    
    Specified by:
    
    removeListeners in interface Promise<Void>
  - await
```
public VoidChannelPromise await()
                         throws InterruptedException
```
    Description copied from interface: Future
    
    Waits for this future to be completed.
    
    Specified by:
    
    await in interface ChannelFuture
    
    Specified by:
    
    await in interface ChannelPromise
    
    Specified by:
    
    await in interface Promise<Void>
    
    Throws:
    
    InterruptedException - if the current thread was interrupted
  - await
```
public boolean await(long timeout,
                     TimeUnit unit)
```
    Description copied from interface: Future
    
    Waits for this future to be completed within the specified time limit.
    
    Returns:
    
    true if and only if the future was completed within the specified time limit
  - await
```
public boolean await(long timeoutMillis)
```
    Description copied from interface: Future
    
    Waits for this future to be completed within the specified time limit.
    
    Returns:
    
    true if and only if the future was completed within the specified time limit
  - awaitUninterruptibly
```
public VoidChannelPromise awaitUninterruptibly()
```
    Description copied from interface: Future
    
    Waits for this future to be completed without interruption. This method catches an InterruptedException and discards it silently.
    
    Specified by:
    
    awaitUninterruptibly in interface ChannelFuture
    
    Specified by:
    
    awaitUninterruptibly in interface ChannelPromise
    
    Specified by:
    
    awaitUninterruptibly in interface Promise<Void>
  - awaitUninterruptibly
```
public boolean awaitUninterruptibly(long timeout,
                                    TimeUnit unit)
```
    Description copied from interface: Future
    
    Waits for this future to be completed within the specified time limit without interruption. This method catches an InterruptedException and discards it silently.
    
    Returns:
    
    true if and only if the future was completed within the specified time limit
  - awaitUninterruptibly
```
public boolean awaitUninterruptibly(long timeoutMillis)
```
    Description copied from interface: Future
    
    Waits for this future to be completed within the specified time limit without interruption. This method catches an InterruptedException and discards it silently.
    
    Returns:
    
    true if and only if the future was completed within the specified time limit
  - channel
```
public Channel channel()
```
    Description copied from interface: ChannelFuture
    
    Returns a channel where the I/O operation associated with this future takes place.
    
    Specified by:
    
    channel in interface ChannelFuture
    
    Specified by:
    
    channel in interface ChannelPromise
  - isDone
```
public boolean isDone()
```
    Specified by:
    
    isDone in interface Future<Void>
  - isSuccess
```
public boolean isSuccess()
```
    Description copied from interface: Future
    
    Returns true if and only if the I/O operation was completed successfully.
  - setUncancellable
```
public boolean setUncancellable()
```
    Description copied from interface: Promise
    
    Make this future impossible to cancel.
    
    Specified by:
    
    setUncancellable in interface Promise<Void>
    
    Returns:
    
    true if and only if successfully marked this future as uncancellable or it is already done without being cancelled. false if this future has been cancelled already.
  - isCancellable
```
public boolean isCancellable()
```
    Description copied from interface: Future
    
    returns true if and only if the operation can be cancelled via Future.cancel(boolean).
  - isCancelled
```
public boolean isCancelled()
```
    Specified by:
    
    isCancelled in interface Future<Void>
  - cause
```
public Throwable cause()
```
    Description copied from interface: Future
    
    Returns the cause of the failed I/O operation if the I/O operation has failed.
    
    Returns:
    
    the cause of the failure. null if succeeded or this future is not completed yet.
  - sync
```
public VoidChannelPromise sync()
```
    Description copied from interface: Future
    
    Waits for this future until it is done, and rethrows the cause of the failure if this future failed.
    
    Specified by:
    
    sync in interface ChannelFuture
    
    Specified by:
    
    sync in interface ChannelPromise
    
    Specified by:
    
    sync in interface Promise<Void>
  - syncUninterruptibly
```
public VoidChannelPromise syncUninterruptibly()
```
    Description copied from interface: Future
    
    Waits for this future until it is done, and rethrows the cause of the failure if this future failed.
    
    Specified by:
    
    syncUninterruptibly in interface ChannelFuture
    
    Specified by:
    
    syncUninterruptibly in interface ChannelPromise
    
    Specified by:
    
    syncUninterruptibly in interface Promise<Void>
  - setFailure
```
public VoidChannelPromise setFailure(Throwable cause)
```
    Description copied from interface: Promise
    
    Marks this future as a failure and notifies all listeners. If it is success or failed already it will throw an IllegalStateException.
    
    Specified by:
    
    setFailure in interface ChannelPromise
    
    Specified by:
    
    setFailure in interface Promise<Void>
  - setSuccess
```
public VoidChannelPromise setSuccess()
```
    Specified by:
    
    setSuccess in interface ChannelPromise
  - tryFailure
```
public boolean tryFailure(Throwable cause)
```
    Description copied from interface: Promise
    
    Marks this future as a failure and notifies all listeners.
    
    Specified by:
    
    tryFailure in interface Promise<Void>
    
    Returns:
    
    true if and only if successfully marked this future as a failure. Otherwise false because this future is already marked as either a success or a failure.
  - cancel
```
public boolean cancel(boolean mayInterruptIfRunning)
```
    If the cancellation was successful it will fail the future with a CancellationException.
    
    Specified by:
    
    cancel in interface Future<Void>
    
    Parameters:
    
    mayInterruptIfRunning - this value has no effect in this implementation.
  - trySuccess
```
public boolean trySuccess()
```
    Specified by:
    
    trySuccess in interface ChannelPromise
  - setSuccess
```
public VoidChannelPromise setSuccess(Void result)
```
    Description copied from interface: Promise
    
    Marks this future as a success and notifies all listeners. If it is success or failed already it will throw an IllegalStateException.
    
    Specified by:
    
    setSuccess in interface ChannelPromise
    
    Specified by:
    
    setSuccess in interface Promise<Void>
  - trySuccess
```
public boolean trySuccess(Void result)
```
    Description copied from interface: Promise
    
    Marks this future as a success and notifies all listeners.
    
    Specified by:
    
    trySuccess in interface Promise<Void>
    
    Returns:
    
    true if and only if successfully marked this future as a success. Otherwise false because this future is already marked as either a success or a failure.
  - getNow
```
public Void getNow()
```
    Description copied from interface: Future
    
    Return the result without blocking. If the future is not done yet this will return null. As it is possible that a null value is used to mark the future as successful you also need to check if the future is really done with Future.isDone() and not rely on the returned null value.
  - unvoid
```
public ChannelPromise unvoid()
```
    Description copied from interface: ChannelPromise
    
    Returns a new ChannelPromise if ChannelFuture.isVoid() returns true otherwise itself.
    
    Specified by:
    
    unvoid in interface ChannelPromise
  - isVoid
```
public boolean isVoid()
```
    Description copied from interface: ChannelFuture
    Returns true if this ChannelFuture is a void future and so not allow to call any of the following methods:
    Specified by:
    
    isVoid in interface ChannelFuture

Class VoidChannelPromise

Constructor Summary

Method Summary

Methods inherited from class io.netty.util.concurrent.AbstractFuture

Methods inherited from class java.lang.Object

Methods inherited from interface java.util.concurrent.Future

Constructor Detail

VoidChannelPromise

Method Detail

addListener

addListeners

removeListener

removeListeners

await

await

await

awaitUninterruptibly

awaitUninterruptibly

awaitUninterruptibly

channel

isDone

isSuccess

setUncancellable

isCancellable

isCancelled

cause

sync

syncUninterruptibly

setFailure

setSuccess

tryFailure

cancel

trySuccess

setSuccess

trySuccess

getNow

unvoid

isVoid