io.netty.util.concurrent

类 FailedFuture<V>

java.lang.Object

io.netty.util.concurrent.AbstractFuture<V>

io.netty.util.concurrent.CompleteFuture<V>

io.netty.util.concurrent.FailedFuture<V>

所有已实现的接口:

java.util.concurrent.Future<V>

public final class FailedFuture<V>
extends CompleteFuture<V>

The CompleteFuture which is failed already. It is recommended to use EventExecutor.newFailedFuture(Throwable) instead of calling the constructor of this future.

构造器概要

构造器

构造器和说明
FailedFuture(EventExecutor executor, java.lang.Throwable cause) Creates a new instance.

方法概要

限定符和类型	方法和说明
java.lang.Throwable	cause() Returns the cause of the failed I/O operation if the I/O operation has failed.
V	getNow() Return the result without blocking.
boolean	isSuccess() Returns true if and only if the I/O operation was completed successfully.
Future<V>	sync() Waits for this future until it is done, and rethrows the cause of the failure if this future failed.
Future<V>	syncUninterruptibly() Waits for this future until it is done, and rethrows the cause of the failure if this future failed.

从类继承的方法 io.netty.util.concurrent.CompleteFuture

addListener, addListeners, await, await, await, awaitUninterruptibly, awaitUninterruptibly, awaitUninterruptibly, cancel, executor, isCancellable, isCancelled, isDone, removeListener, removeListeners

从类继承的方法 io.netty.util.concurrent.AbstractFuture

get, get

从类继承的方法 java.lang.Object

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

构造器详细资料

FailedFuture

public FailedFuture(EventExecutor executor,
                    java.lang.Throwable cause)

Creates a new instance.

参数:

executor - the EventExecutor associated with this future

cause - the cause of failure

方法详细资料

cause

public java.lang.Throwable cause()

从接口复制的说明: Future

Returns the cause of the failed I/O operation if the I/O operation has failed.

返回:

the cause of the failure. null if succeeded or this future is not completed yet.

isSuccess

public boolean isSuccess()

从接口复制的说明: Future

Returns true if and only if the I/O operation was completed successfully.

sync

public Future<V> sync()

从接口复制的说明: Future

Waits for this future until it is done, and rethrows the cause of the failure if this future failed.

覆盖:

sync 在类中 CompleteFuture<V>

syncUninterruptibly

public Future<V> syncUninterruptibly()

从接口复制的说明: Future

Waits for this future until it is done, and rethrows the cause of the failure if this future failed.

覆盖:

syncUninterruptibly 在类中 CompleteFuture<V>

getNow

public V getNow()

从接口复制的说明: 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.