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org.apache.crunch.impl
Class SingleUseIterable<T>

java.lang.Object
  org.apache.crunch.impl.SingleUseIterable<T>

All Implemented Interfaces:

Iterable<T>

public class SingleUseIterable<T>
extends Object
implements Iterable<T>

Wrapper around a Reducer's input Iterable. Ensures that the iterator() method is not called more than once.

Constructor Summary

SingleUseIterable(Iterable<T> toWrap)
Instantiate around an Iterable that may only be used once.

Method Summary

Iterator<T>

iterator()

Methods inherited from class java.lang.Object

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

Constructor Detail

SingleUseIterable

public SingleUseIterable(Iterable<T> toWrap)

Instantiate around an Iterable that may only be used once.

Parameters:

toWrap - iterable to wrap

Method Detail

iterator

public Iterator<T> iterator()

Specified by:

iterator in interface Iterable<T>