Package com.github.basking2.sdsai.itrex.iterators

Class PrefetchingIterator<T>

java.lang.Object

com.github.basking2.sdsai.itrex.iterators.ParallelIteratorIterator<T>

com.github.basking2.sdsai.itrex.iterators.PrefetchingIterator<T>

All Implemented Interfaces:

Iterator<T>

public class PrefetchingIterator<T>
extends ParallelIteratorIterator<T>

An iterator that prefetches and caches some number of elements from another iterator. Sometimes it is expensive for an iterator to return a value. In these situations it is sometimes preferable to pre-fetch a few objects, and asynchronously replenish them. Order is preserved, so if there is a particularly slow fetch, it may stall future fetches. This is just a kind of ParallelIteratorIterator that uses a single iterator.

Constructor Summary

Constructors

Constructor	Description
PrefetchingIterator(Executor executor, int prefetch, Iterator<T> iterator)

Method Summary

Methods inherited from class com.github.basking2.sdsai.itrex.iterators.ParallelIteratorIterator

hasNext, next

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

Constructor Details

PrefetchingIterator

public PrefetchingIterator(Executor executor,
 int prefetch,
 Iterator<T> iterator)