| 1 | /** |
| 2 | * |
| 3 | */ |
| 4 | package net.spy.memcached.internal; |
| 5 | |
| 6 | import java.util.concurrent.ExecutionException; |
| 7 | import java.util.concurrent.Future; |
| 8 | import java.util.concurrent.TimeUnit; |
| 9 | import java.util.concurrent.TimeoutException; |
| 10 | |
| 11 | /** |
| 12 | * A future that fires immediately. |
| 13 | */ |
| 14 | public class ImmediateFuture implements Future<Boolean> { |
| 15 | private final Boolean value; |
| 16 | private final ExecutionException exception; |
| 17 | |
| 18 | public ImmediateFuture(Boolean returnValue) { |
| 19 | value = returnValue; |
| 20 | exception = null; |
| 21 | } |
| 22 | |
| 23 | public ImmediateFuture(Exception e) { |
| 24 | value = null; |
| 25 | exception = new ExecutionException(e); |
| 26 | } |
| 27 | |
| 28 | public boolean cancel(boolean mayInterruptIfRunning) { |
| 29 | return false; |
| 30 | } |
| 31 | |
| 32 | public Boolean get() throws InterruptedException, ExecutionException { |
| 33 | if(exception != null) { |
| 34 | throw exception; |
| 35 | } |
| 36 | return value; |
| 37 | } |
| 38 | |
| 39 | public Boolean get(long timeout, TimeUnit unit) |
| 40 | throws InterruptedException, ExecutionException, |
| 41 | TimeoutException { |
| 42 | if(exception != null) { |
| 43 | throw exception; |
| 44 | } |
| 45 | return value; |
| 46 | } |
| 47 | |
| 48 | public boolean isCancelled() { |
| 49 | return false; |
| 50 | } |
| 51 | |
| 52 | public boolean isDone() { |
| 53 | return true; |
| 54 | } |
| 55 | |
| 56 | } |