Futures.MappingCheckedFuture

java.lang.Object
- com.google.common.collect.ForwardingObject
- - com.google.common.util.concurrent.ForwardingFuture<V>
  - - com.google.common.util.concurrent.ForwardingListenableFuture<V>
    - - com.google.common.util.concurrent.ForwardingListenableFuture.SimpleForwardingListenableFuture<V>
      - com.google.common.util.concurrent.AbstractCheckedFuture<V,X>
        
        com.google.common.util.concurrent.Futures.MappingCheckedFuture<V,X>

All Implemented Interfaces:

CheckedFuture<V,X>, ListenableFuture<V>, java.util.concurrent.Future<V>

Enclosing class:

Futures
```
@GwtIncompatible
private static class Futures.MappingCheckedFuture<V,X extends java.lang.Exception>
extends AbstractCheckedFuture<V,X>
```
A checked future that uses a function to map from exceptions to the appropriate checked type.

Nested Class Summary
- Nested classes/interfaces inherited from class com.google.common.util.concurrent.ForwardingListenableFuture
  ForwardingListenableFuture.SimpleForwardingListenableFuture<V>
- Nested classes/interfaces inherited from class com.google.common.util.concurrent.ForwardingFuture
  ForwardingFuture.SimpleForwardingFuture<V>

Field Summary

Fields
Modifier and Type Field Description

(package private) Function<? super java.lang.Exception,X> mapper

Constructor Summary

Constructors
Constructor Description

MappingCheckedFuture(ListenableFuture<V> delegate, Function<? super java.lang.Exception,X> mapper)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected X`	`mapException(java.lang.Exception e)`	Translates from an `InterruptedException`, `CancellationException` or `ExecutionException` thrown by `get` to an exception of type `X` to be thrown by `checkedGet`.

Methods inherited from class com.google.common.util.concurrent.AbstractCheckedFuture
checkedGet, checkedGet

Methods inherited from class com.google.common.util.concurrent.ForwardingListenableFuture.SimpleForwardingListenableFuture
delegate

Methods inherited from class com.google.common.util.concurrent.ForwardingListenableFuture
addListener

Methods inherited from class com.google.common.util.concurrent.ForwardingFuture
cancel, get, get, isCancelled, isDone

Methods inherited from class com.google.common.collect.ForwardingObject
toString

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

Methods inherited from interface java.util.concurrent.Future
cancel, get, get, isCancelled, isDone

Methods inherited from interface com.google.common.util.concurrent.ListenableFuture
addListener

- Field Detail
  - mapper
```
final Function<? super java.lang.Exception,X extends java.lang.Exception> mapper
```
- Constructor Detail
  - MappingCheckedFuture
```
MappingCheckedFuture(ListenableFuture<V> delegate,
                     Function<? super java.lang.Exception,X> mapper)
```
- Method Detail
  - mapException
```
protected X mapException(java.lang.Exception e)
```
    Description copied from class: AbstractCheckedFuture
    
    Translates from an InterruptedException, CancellationException or ExecutionException thrown by get to an exception of type X to be thrown by checkedGet. Subclasses must implement this method.
    If e is an InterruptedException, the calling checkedGet method has already restored the interrupt after catching the exception. If an implementation of AbstractCheckedFuture.mapException(Exception) wishes to swallow the interrupt, it can do so by calling Thread.interrupted().
    Subclasses may choose to throw, rather than return, a subclass of RuntimeException to allow creating a CheckedFuture that throws both checked and unchecked exceptions.
    
    Specified by:
    
    mapException in class AbstractCheckedFuture<V,X extends java.lang.Exception>