mondrian.util
Class CompletedFuture<V>

java.lang.Object
  mondrian.util.CompletedFuture<V>

All Implemented Interfaces:

Future<V>

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

Implementation of Future that has already completed.

Constructor Summary

CompletedFuture(V value, ExecutionException exception)
Creates a CompletedFuture.

Method Summary

boolean	cancel(boolean mayInterruptIfRunning)
static <T> CompletedFuture<T>	fail(Throwable e) Creates a completed future indicating failure.
V	get()
V	get(long timeout, TimeUnit unit)
boolean	isCancelled()
boolean	isDone()
static <T> CompletedFuture<T>	success(T t) Creates a completed future indicating success.

Methods inherited from class java.lang.Object

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

Constructor Detail

CompletedFuture

public CompletedFuture(V value,
                       ExecutionException exception)

Creates a CompletedFuture.

If throwable is not null, the computation is deemed to have failed. The exception will be thrown (wrapped in a ExecutionException) when get() or get(long, java.util.concurrent.TimeUnit) are invoked.

If exception is null, the computation is deemed to have succeeded. In this case, a null value in value just means that the computation yielded a null result.

Parameters:

value - Value (may be null)

exception - Exception that occurred while computing result

Method Detail

success

public static <T> CompletedFuture<T> success(T t)

Creates a completed future indicating success.

Parameters:

t - Result of computation

Returns:

Completed future that will yield the result

fail

public static <T> CompletedFuture<T> fail(Throwable e)

Creates a completed future indicating failure.

Parameters:

e - Exception

Returns:

Completed future that will throw

cancel

public boolean cancel(boolean mayInterruptIfRunning)

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

Specified by:

get in interface Future<V>

Throws:

ExecutionException

get

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

Specified by:

get in interface Future<V>

Throws:

ExecutionException