Apache HttpCore 4.4.16 · org.apache.http.concurrent.BasicFuture

Modifier and Type	Field and Description
private final FutureCallback<T>	callback
private volatile boolean	cancelled
private volatile boolean	completed
private volatile Exception	ex
private volatile T	result

Access	Constructor and Description
public	BasicFuture(final FutureCallback<T> callback)

Method Summary

Modifier and Type	Method and Description
public boolean	cancel(final boolean `true` if the thread executing this task should be interrupted (if the thread is known to the implementation); otherwise, in-progress tasks are allowed to complete mayInterruptIfRunning) Implements java.util.concurrent.Future.cancel. Attempts to cancel execution of this task.
public boolean	cancel() Implements org.apache.http.concurrent.Cancellable.cancel. Cancels the ongoing operation or process.
public boolean	completed(final T result)
public boolean	failed(final Exception exception)
public synchronized T	get() Implements java.util.concurrent.Future.get. Waits if necessary for the computation to complete, and then retrieves its result.
public synchronized T	get(final long the maximum time to wait timeout, final TimeUnit the time unit of the timeout argument unit) Implements java.util.concurrent.Future.get. Waits if necessary for at most the given time for the computation to complete, and then retrieves its result, if available.
private T	getResult()
public boolean	isCancelled() Implements java.util.concurrent.Future.isCancelled. Returns `true` if this task was cancelled before it completed normally.
public boolean	isDone() Implements java.util.concurrent.Future.isDone. Returns `true` if this task completed.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

callback	back to summary
private final FutureCallback<T> callback

cancelled	back to summary
private volatile boolean cancelled

completed	back to summary
private volatile boolean completed

ex	back to summary
private volatile Exception ex

result	back to summary
private volatile T result

BasicFuture	back to summary
public BasicFuture(final FutureCallback<T> callback)

Method Detail

cancel back to summary

cancel	back to summary
public boolean cancel(final boolean mayInterruptIfRunning) Implements java.util.concurrent.Future.cancel. Doc from java.util.concurrent.Future.cancel. Attempts to cancel execution of this task. This method has no effect if the task is already completed or cancelled, or could not be cancelled for some other reason. Otherwise, if this task has not started when `cancel` is called, this task should never run. If the task has already started, then the `mayInterruptIfRunning` parameter determines whether the thread executing this task (when known by the implementation) is interrupted in an attempt to stop the task. The return value from this method does not necessarily indicate whether the task is now cancelled; use `isCancelled`. Parameters mayInterruptIfRunning:boolean `true` if the thread executing this task should be interrupted (if the thread is known to the implementation); otherwise, in-progress tasks are allowed to complete Returns:boolean `false` if the task could not be cancelled, typically because it has already completed; `true` otherwise. If two or more threads cause a task to be cancelled, then at least one of them returns `true`. Implementations may provide stronger guarantees. Annotations @Override

public boolean cancel(final boolean mayInterruptIfRunning)

Implements java.util.concurrent.Future.cancel.

Doc from java.util.concurrent.Future.cancel.

Attempts to cancel execution of this task. This method has no effect if the task is already completed or cancelled, or could not be cancelled for some other reason. Otherwise, if this task has not started when cancel is called, this task should never run. If the task has already started, then the mayInterruptIfRunning parameter determines whether the thread executing this task (when known by the implementation) is interrupted in an attempt to stop the task.

The return value from this method does not necessarily indicate whether the task is now cancelled; use isCancelled.

Parameters

mayInterruptIfRunning:boolean: true if the thread executing this task should be interrupted (if the thread is known to the implementation); otherwise, in-progress tasks are allowed to complete

Returns:boolean

false if the task could not be cancelled, typically because it has already completed; true otherwise. If two or more threads cause a task to be cancelled, then at least one of them returns true. Implementations may provide stronger guarantees.

Annotations

@Override

cancel back to summary

cancel	back to summary
public boolean cancel() Implements org.apache.http.concurrent.Cancellable.cancel. Doc from org.apache.http.concurrent.Cancellable.cancel. Cancels the ongoing operation or process. Returns:boolean `true` if the operation or process has been cancelled as a result of this method call or `false` if it has already been cancelled or not started. Annotations @Override

public boolean cancel()

Implements org.apache.http.concurrent.Cancellable.cancel.

Doc from org.apache.http.concurrent.Cancellable.cancel.

Cancels the ongoing operation or process.

Returns:boolean

true if the operation or process has been cancelled as a result of this method call or false if it has already been cancelled or not started.

Annotations

@Override

completed	back to summary
public boolean completed(final T result)

failed	back to summary
public boolean failed(final Exception exception)

get	back to summary
public synchronized T get() throws InterruptedException, ExecutionException Implements java.util.concurrent.Future.get. Doc from java.util.concurrent.Future.get. Waits if necessary for the computation to complete, and then retrieves its result. Returns:T the computed result Annotations @Override Exceptions InterruptedException: if the current thread was interrupted while waiting ExecutionException: if the computation threw an exception

get

back to summary

public synchronized T get() throws InterruptedException, ExecutionException

Implements java.util.concurrent.Future.get.

Doc from java.util.concurrent.Future.get.

Waits if necessary for the computation to complete, and then retrieves its result.

Returns:T

the computed result

Annotations

@Override

Exceptions

InterruptedException:: if the current thread was interrupted while waiting
ExecutionException:: if the computation threw an exception

get	back to summary
public synchronized T get(final long timeout, final TimeUnit unit) throws InterruptedException, ExecutionException, TimeoutException Implements java.util.concurrent.Future.get. Doc from java.util.concurrent.Future.get. Waits if necessary for at most the given time for the computation to complete, and then retrieves its result, if available. Parameters timeout:long the maximum time to wait unit:TimeUnit the time unit of the timeout argument Returns:T the computed result Annotations @Override Exceptions InterruptedException: if the current thread was interrupted while waiting ExecutionException: if the computation threw an exception TimeoutException: if the wait timed out

get

back to summary

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

Implements java.util.concurrent.Future.get.

Doc from java.util.concurrent.Future.get.

Waits if necessary for at most the given time for the computation to complete, and then retrieves its result, if available.

Parameters

timeout:long: the maximum time to wait
unit:TimeUnit: the time unit of the timeout argument

Returns:T

the computed result

Annotations

@Override

Exceptions

InterruptedException:: if the current thread was interrupted while waiting
ExecutionException:: if the computation threw an exception
TimeoutException:: if the wait timed out

getResult	back to summary
private T getResult() throws ExecutionException

isCancelled back to summary

isCancelled	back to summary
public boolean isCancelled() Implements java.util.concurrent.Future.isCancelled. Doc from java.util.concurrent.Future.isCancelled. Returns `true` if this task was cancelled before it completed normally. Returns:boolean `true` if this task was cancelled before it completed Annotations @Override

public boolean isCancelled()

Implements java.util.concurrent.Future.isCancelled.

Doc from java.util.concurrent.Future.isCancelled.

Returns true if this task was cancelled before it completed normally.

Returns:boolean

true if this task was cancelled before it completed

Annotations

@Override

isDone back to summary

isDone	back to summary
public boolean isDone() Implements java.util.concurrent.Future.isDone. Doc from java.util.concurrent.Future.isDone. Returns `true` if this task completed. Completion may be due to normal termination, an exception, or cancellation -- in all of these cases, this method will return `true`. Returns:boolean `true` if this task completed Annotations @Override

public boolean isDone()

Implements java.util.concurrent.Future.isDone.

Doc from java.util.concurrent.Future.isDone.

Returns true if this task completed. Completion may be due to normal termination, an exception, or cancellation -- in all of these cases, this method will return true.

Returns:boolean

true if this task completed

Annotations

@Override

public Class BasicFuture<T>

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail