ClosingFuture.Peeker

java.lang.Object
- com.google.common.util.concurrent.ClosingFuture.Peeker

Enclosing class:

ClosingFuture<V>
```
public static final class ClosingFuture.Peeker
extends java.lang.Object
```
An object that can return the value of the ClosingFutures that are passed to ClosingFuture.whenAllComplete(Iterable) or ClosingFuture.whenAllSucceed(Iterable).
Only for use by a ClosingFuture.Combiner.CombiningCallable or ClosingFuture.Combiner.AsyncCombiningCallable object.

Field Summary

Fields
Modifier and Type Field Description

private boolean beingCalled

private ImmutableList<ClosingFuture<?>> futures

Constructor Summary

Constructors
Modifier Constructor Description

private Peeker(ImmutableList<ClosingFuture<?>> futures)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`private <V> V`	`call(ClosingFuture.Combiner.CombiningCallable<V> combiner, ClosingFuture.CloseableList closeables)`
`private <V> FluentFuture<V>`	`callAsync(ClosingFuture.Combiner.AsyncCombiningCallable<V> combiner, ClosingFuture.CloseableList closeables)`
`<D> D`	`getDone(ClosingFuture<D> closingFuture)`	Returns the value of `closingFuture`.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

futures

private final ImmutableList<ClosingFuture<?>> futures

beingCalled
```
private volatile boolean beingCalled
```

Constructor Detail

Peeker

private Peeker(ImmutableList<ClosingFuture<?>> futures)

Method Detail
- getDone
```
public final <D> D getDone(ClosingFuture<D> closingFuture)
                    throws java.util.concurrent.ExecutionException
```
  Returns the value of closingFuture.
  
  Throws:
  
  java.util.concurrent.ExecutionException - if closingFuture is a failed step
  
  java.util.concurrent.CancellationException - if the closingFuture's future was cancelled
  
  java.lang.IllegalArgumentException - if closingFuture is not one of the futures passed to ClosingFuture.whenAllComplete(Iterable) or ClosingFuture.whenAllComplete(Iterable)
  
  java.lang.IllegalStateException - if called outside of a call to ClosingFuture.Combiner.CombiningCallable.call(DeferredCloser, Peeker) or ClosingFuture.Combiner.AsyncCombiningCallable.call(DeferredCloser, Peeker)
- call
```
private <V> V call(ClosingFuture.Combiner.CombiningCallable<V> combiner,
                   ClosingFuture.CloseableList closeables)
            throws java.lang.Exception
```
  Throws:
  
  java.lang.Exception
- callAsync
```
private <V> FluentFuture<V> callAsync(ClosingFuture.Combiner.AsyncCombiningCallable<V> combiner,
                                      ClosingFuture.CloseableList closeables)
                               throws java.lang.Exception
```
  Throws:
  
  java.lang.Exception