ClosingFuture.Peeker (Guava: Google Core Libraries for Java 30.0-jre API)

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

Enclosing class:

ClosingFuture<V>
```
public static final class ClosingFuture.Peeker
extends 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.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`<D extends @Nullable Object> 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

- Method Detail
  - getDone
```
public final <D extends @Nullable Object> D getDone(ClosingFuture<D> closingFuture)
                                             throws ExecutionException
```
    Returns the value of closingFuture.
    
    Throws:
    
    ExecutionException - if closingFuture is a failed step
    
    CancellationException - if the closingFuture's future was cancelled
    
    IllegalArgumentException - if closingFuture is not one of the futures passed to ClosingFuture.whenAllComplete(Iterable) or ClosingFuture.whenAllComplete(Iterable)
    
    IllegalStateException - if called outside of a call to ClosingFuture.Combiner.CombiningCallable.call(DeferredCloser, Peeker) or ClosingFuture.Combiner.AsyncCombiningCallable.call(DeferredCloser, Peeker)