de.intarsys.tools.concurrent

Class AbstractFutureTask<R>

java.lang.Object

de.intarsys.tools.concurrent.AbstractFutureTask<R>

Type Parameters:

R -

All Implemented Interfaces:

java.lang.Runnable, java.util.concurrent.Future

Direct Known Subclasses:

CallbackFutureTask, TaskSequence, TaskStep

public abstract class AbstractFutureTask<R>
extends java.lang.Object
implements java.lang.Runnable, java.util.concurrent.Future

This is an alternate implementation for FutureTask, which is in some cases not flexible enough.

Field Summary

Fields

Modifier and Type	Field and Description
protected static java.util.logging.Logger	Log

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractFutureTask()

Method Summary

Modifier and Type	Method and Description
protected java.lang.Throwable	basicGetException()
protected R	basicGetResult()
boolean	cancel(boolean interrupt)
protected abstract R	compute()
protected void	computeAsync()
R	get()
R	get(long pMillisecTimeout, java.util.concurrent.TimeUnit unit)
java.lang.Throwable	getException()
protected void	handleException()
protected void	handleFinally()
protected void	handleResult()
boolean	isActive()
boolean	isCancelled()
boolean	isDone()
boolean	isFailed()
void	reset()
void	run()
void	runAsync()
protected void	setException(java.lang.Throwable e)
protected void	setResult(R object)
protected void	taskCancelled()
protected void	taskFailed()
protected void	taskFinally()
protected void	taskFinished()
protected void	taskStarted()
java.lang.String	toString()
protected void	undo()

Methods inherited from class java.lang.Object

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

Field Detail

Log

protected static final java.util.logging.Logger Log

Constructor Detail

AbstractFutureTask

protected AbstractFutureTask()

Method Detail

basicGetException

protected java.lang.Throwable basicGetException()

basicGetResult

protected R basicGetResult()

cancel

public boolean cancel(boolean interrupt)

Specified by:

cancel in interface java.util.concurrent.Future

compute

protected abstract R compute()
                      throws java.lang.Exception

Throws:

java.lang.Exception

computeAsync

protected void computeAsync()

get

public R get()
      throws java.lang.InterruptedException,
             java.util.concurrent.ExecutionException

Specified by:

get in interface java.util.concurrent.Future

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

get

public R get(long pMillisecTimeout,
             java.util.concurrent.TimeUnit unit)
      throws java.lang.InterruptedException,
             java.util.concurrent.ExecutionException,
             java.util.concurrent.TimeoutException

Specified by:

get in interface java.util.concurrent.Future

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

java.util.concurrent.TimeoutException

getException

public java.lang.Throwable getException()

handleException

protected final void handleException()

handleFinally

protected final void handleFinally()

handleResult

protected final void handleResult()

isActive

public boolean isActive()

isCancelled

public boolean isCancelled()

Specified by:

isCancelled in interface java.util.concurrent.Future

isDone

public boolean isDone()

Specified by:

isDone in interface java.util.concurrent.Future

isFailed

public boolean isFailed()

reset

public void reset()

run

public final void run()

Specified by:

run in interface java.lang.Runnable

runAsync

public void runAsync()

setException

protected void setException(java.lang.Throwable e)

setResult

protected void setResult(R object)

taskCancelled

protected void taskCancelled()

taskFailed

protected void taskFailed()

taskFinally

protected void taskFinally()

taskFinished

protected void taskFinished()

taskStarted

protected void taskStarted()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

undo

protected void undo()