org.springframework.util.concurrent

类 SettableListenableFuture<T>

java.lang.Object

org.springframework.util.concurrent.SettableListenableFuture<T>

所有已实现的接口:

Future<T>, ListenableFuture<T>

public class SettableListenableFuture<T>
extends Object
implements ListenableFuture<T>

A ListenableFuture whose value can be set via set(Object) or setException(Throwable). It may also get cancelled.

Inspired by com.google.common.util.concurrent.SettableFuture.

从以下版本开始:

4.1

作者:

Mattias Severson, Rossen Stoyanchev, Juergen Hoeller

构造器概要

构造器

构造器和说明
SettableListenableFuture()

方法概要

限定符和类型	方法和说明
void	addCallback(ListenableFutureCallback<? super T> callback) Register the given ListenableFutureCallback.
void	addCallback(SuccessCallback<? super T> successCallback, FailureCallback failureCallback) Java 8 lambda-friendly alternative with success and failure callbacks.
boolean	cancel(boolean mayInterruptIfRunning)
CompletableFuture<T>	completable() Expose this ListenableFuture as a JDK CompletableFuture.
T	get() Retrieve the value.
T	get(long timeout, TimeUnit unit) Retrieve the value.
protected void	interruptTask() Subclasses can override this method to implement interruption of the future's computation.
boolean	isCancelled()
boolean	isDone()
boolean	set(T value) Set the value of this future.
boolean	setException(Throwable exception) Set the exception of this future.

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

SettableListenableFuture

public SettableListenableFuture()

方法详细资料

set

public boolean set(@Nullable
                   T value)

Set the value of this future. This method will return true if the value was set successfully, or false if the future has already been set or cancelled.

参数:

value - the value that will be set

返回:

true if the value was successfully set, else false

setException

public boolean setException(Throwable exception)

Set the exception of this future. This method will return true if the exception was set successfully, or false if the future has already been set or cancelled.

参数:

exception - the value that will be set

返回:

true if the exception was successfully set, else false

addCallback

public void addCallback(ListenableFutureCallback<? super T> callback)

从接口复制的说明: ListenableFuture

Register the given ListenableFutureCallback.

指定者:

addCallback 在接口中 ListenableFuture<T>

参数:

callback - the callback to register

addCallback

public void addCallback(SuccessCallback<? super T> successCallback,
                        FailureCallback failureCallback)

从接口复制的说明: ListenableFuture

Java 8 lambda-friendly alternative with success and failure callbacks.

指定者:

addCallback 在接口中 ListenableFuture<T>

参数:

successCallback - the success callback

failureCallback - the failure callback

completable

public CompletableFuture<T> completable()

从接口复制的说明: ListenableFuture

Expose this ListenableFuture as a JDK CompletableFuture.

指定者:

completable 在接口中 ListenableFuture<T>

cancel

public boolean cancel(boolean mayInterruptIfRunning)

指定者:

cancel 在接口中 Future<T>

isCancelled

public boolean isCancelled()

指定者:

isCancelled 在接口中 Future<T>

isDone

public boolean isDone()

指定者:

isDone 在接口中 Future<T>

get

public T get()
      throws InterruptedException,
             ExecutionException

Retrieve the value.

This method returns the value if it has been set via set(Object), throws an ExecutionException if an exception has been set via setException(Throwable), or throws a CancellationException if the future has been cancelled.

指定者:

get 在接口中 Future<T>

返回:

the value associated with this future

抛出:

InterruptedException

ExecutionException

get

public T get(long timeout,
             TimeUnit unit)
      throws InterruptedException,
             ExecutionException,
             TimeoutException

Retrieve the value.

This method returns the value if it has been set via set(Object), throws an ExecutionException if an exception has been set via setException(Throwable), or throws a CancellationException if the future has been cancelled.

指定者:

get 在接口中 Future<T>

参数:

timeout - the maximum time to wait

unit - the unit of the timeout argument

返回:

the value associated with this future

抛出:

InterruptedException

ExecutionException

TimeoutException

interruptTask

protected void interruptTask()

Subclasses can override this method to implement interruption of the future's computation. The method is invoked automatically by a successful call to cancel(true).

The default implementation is empty.