mondrian.util

Class SlotFuture<V>

java.lang.Object

mondrian.util.SlotFuture<V>

All Implemented Interfaces:

Future<V>

public class SlotFuture<V>
extends Object
implements Future<V>

Implementation of Future that completes when a thread writes a value (or an exception) into a slot.

Constructor Summary

Constructors

Constructor and Description
SlotFuture() Creates a SlotFuture.

Method Summary

Modifier and Type	Method and Description
boolean	cancel(boolean mayInterruptIfRunning)
void	fail(Throwable throwable) Writes a throwable into the slot, indicating that the task has failed.
V	get()
V	get(long timeout, TimeUnit unit)
boolean	isCancelled()
boolean	isDone()
void	put(V value) Writes a value into the slot, indicating that the task has completed successfully.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

SlotFuture

public SlotFuture()

Creates a SlotFuture.

Method Detail

toString

public String toString()

Overrides:

toString in class Object

cancel

public boolean cancel(boolean mayInterruptIfRunning)

The SlotFuture does not know which thread is computing the result and therefore the mayInterruptIfRunning parameter is ignored.

Specified by:

cancel in interface Future<V>

isCancelled

public boolean isCancelled()

Specified by:

isCancelled in interface Future<V>

isDone

public boolean isDone()

Specified by:

isDone in interface Future<V>

get

public V get()
      throws ExecutionException,
             InterruptedException

Specified by:

get in interface Future<V>

Throws:

ExecutionException

InterruptedException

get

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

Specified by:

get in interface Future<V>

Throws:

ExecutionException

InterruptedException

TimeoutException

put

public void put(V value)

Writes a value into the slot, indicating that the task has completed successfully.

Parameters:

value - Value to yield as the result of the computation

Throws:

IllegalArgumentException - if put, fail or cancel has already been invoked on this future

fail

public void fail(Throwable throwable)

Writes a throwable into the slot, indicating that the task has failed.

Parameters:

throwable - Exception that aborted the computation

Throws:

IllegalArgumentException - if put, fail or cancel has already been invoked on this future