Package com.google.common.util.concurrent

Class AbstractListeningExecutorService

com.google.common.util.concurrent.AbstractListeningExecutorService

All Implemented Interfaces:

,

@Beta

@GwtIncompatible
public abstract class AbstractListeningExecutorService
extends 
implements ListeningExecutorService

Abstract ListeningExecutorService implementation that creates ListenableFuture instances for each and submitted to it. These tasks are run with the abstract method.

In addition to , subclasses must implement all methods related to shutdown and termination.

Since:

14.0

Author:

Chris Povirk

Constructor Summary

Constructors

Constructor	Description
AbstractListeningExecutorService()

Method Summary

Modifier and Type	Method	Description
protected <T> <T>	runnable, T value)	Returns a RunnableFuture for the given runnable and default value.
protected <T> <T>	<T> callable)	Returns a RunnableFuture for the given callable task.
ListenableFuture<?>	task)	Submits a Runnable task for execution and returns a Future representing that task.
<T> ListenableFuture<T>	task, T result)	Submits a Runnable task for execution and returns a Future representing that task.
<T> ListenableFuture<T>	<T> task)	Submits a value-returning task for execution and returns a Future representing the pending results of the task.

Methods inherited from class java.util.concurrent.

, , ,

Methods inherited from class java.lang.

, , , , , , , , , ,

Methods inherited from interface java.util.concurrent.

Methods inherited from interface java.util.concurrent.

, , , , , ,

Methods inherited from interface com.google.common.util.concurrent.ListeningExecutorService

invokeAll, invokeAll

Constructor Detail

AbstractListeningExecutorService

public AbstractListeningExecutorService()

Method Detail

newTaskFor

protected final <T> <T>  runnable,
                                                 T value)

Description copied from class:

Returns a RunnableFuture for the given runnable and default value.

Overrides:

in class

Type Parameters:

T - the type of the given value

Parameters:

runnable - the runnable task being wrapped

value - the default value for the returned future

Returns:

a RunnableFuture which, when run, will run the underlying runnable and which, as a Future, will yield the given value as its result and provide for cancellation of the underlying task

Since:

19.0 (present with return type ListenableFutureTask since 14.0)

newTaskFor

protected final <T> <T> <T> callable)

Description copied from class:

Returns a RunnableFuture for the given callable task.

Overrides:

in class

Type Parameters:

T - the type of the callable's result

Parameters:

callable - the callable task being wrapped

Returns:

a RunnableFuture which, when run, will call the underlying callable and which, as a Future, will yield the callable's result as its result and provide for cancellation of the underlying task

Since:

19.0 (present with return type ListenableFutureTask since 14.0)

submit

public  task)

Description copied from interface:

Submits a Runnable task for execution and returns a Future representing that task. The Future's get method will return null upon successful completion.

Specified by:

in interface

Specified by:

submit in interface ListeningExecutorService

Overrides:

in class

Parameters:

task - the task to submit

Returns:

a Future representing pending completion of the task

submit

public <T>  task,
                                       T result)

Description copied from interface:

Submits a Runnable task for execution and returns a Future representing that task. The Future's get method will return the given result upon successful completion.

Specified by:

in interface

Specified by:

submit in interface ListeningExecutorService

Overrides:

in class

Type Parameters:

T - the type of the result

Parameters:

task - the task to submit

result - the result to return

Returns:

a Future representing pending completion of the task

submit

public <T> <T> task)

Description copied from interface:

Submits a value-returning task for execution and returns a Future representing the pending results of the task. The Future's get method will return the task's result upon successful completion.

If you would like to immediately block waiting for a task, you can use constructions of the form result = exec.submit(aCallable).get();

Note: The class includes a set of methods that can convert some other common closure-like objects, for example, to form so they can be submitted.

Specified by:

in interface

Specified by:

submit in interface ListeningExecutorService

Overrides:

in class

Type Parameters:

T - the type of the task's result

Parameters:

task - the task to submit

Returns:

a Future representing pending completion of the task