Top Description Inners Fields Constructors Methods
org.apache.hc.client5.http.impl

public final Class Operations

extends Object
Class Inheritance
Imports
java.util.concurrent.ExecutionException, .Future, .TimeUnit, .TimeoutException, org.apache.hc.core5.concurrent.Cancellable

Common cancellable operations.
Since
5.0

Nested and Inner Type Summary

Modifier and TypeClass and Description
public static class
Operations.CompletedFuture<
operation result representation.
T
>

This class represents a Future in the completed state with a fixed result.

Field Summary

Modifier and TypeField and Description
private static final Cancellable

Constructor Summary

AccessConstructor and Description
public

Method Summary

Modifier and TypeMethod and Description
public static Cancellable

Returns:

the cancellable operation handle.
cancellable
(final Future<?>
the result future
future
)

Creates a Cancellable operation handle for an ongoing process or operation represented by a Future.

public static Cancellable

Returns:

the no-op cancellable operation handle.
nonCancellable
()

Creates a Cancellable operation handle for an ongoing process or operation that cannot be cancelled.

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

NOOP_CANCELLABLEback to summary
private static final Cancellable NOOP_CANCELLABLE

Constructor Detail

Operationsback to summary
public Operations()

Method Detail

cancellableback to summary
public static Cancellable cancellable(final Future<?> future)

Creates a Cancellable operation handle for an ongoing process or operation represented by a Future.

Parameters
future:Future<?>

the result future

Returns:Cancellable

the cancellable operation handle.

nonCancellableback to summary
public static Cancellable nonCancellable()

Creates a Cancellable operation handle for an ongoing process or operation that cannot be cancelled. Attempts to cancel the operation with this handle will have no effect.

Returns:Cancellable

the no-op cancellable operation handle.

org.apache.hc.client5.http.impl back to summary

public Class Operations.CompletedFuture<T>

extends Object
implements Future<T>
Class Inheritance
All Implemented Interfaces
java.util.concurrent.Future
Type Parameters
<T>
operation result representation.

This class represents a Future in the completed state with a fixed result. The outcome of the future cannot be altered and it cannot be cancelled.

Field Summary

Modifier and TypeField and Description
private final T

Constructor Summary

AccessConstructor and Description
public
CompletedFuture(final T result)

Method Summary

Modifier and TypeMethod 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 T
get()

Implements java.util.concurrent.Future.get.

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

Field Detail

resultback to summary
private final T result

Constructor Detail

CompletedFutureback to summary
public CompletedFuture(final T result)

Method Detail

cancelback 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
getback to summary
public 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
getback to summary
public 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
isCancelledback 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
isDoneback 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