net.automatalib.commons.util.collections

Class BatchingIterator<T>

java.lang.Object

net.automatalib.commons.util.collections.BatchingIterator<T>

Type Parameters:

T - type of elements to aggregate

All Implemented Interfaces:

Iterator<List<T>>

public class BatchingIterator<T>
extends Object
implements Iterator<List<T>>

An iterator that aggregates elements of a given source iterator in batches of a given size. While elements are collected eagerly within a batch, the overall batches are computed lazily.

The source iterator is consumed in this process.

Note: Subsequent calls to the next() method return a reference to the same batch, and only update the contents of the batch. If you plan to reuse intermediate results, you'll need to explicitly copy them.

Author:

frohme

Constructor Summary

Constructors

Constructor and Description
BatchingIterator(Iterator<T> source, int batchSize)

Method Summary

Modifier and Type	Method and Description
boolean	hasNext()
List<T>	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 Detail

BatchingIterator

public BatchingIterator(Iterator<T> source,
                        int batchSize)

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<List<T>>

next

public List<T> next()

Specified by:

next in interface Iterator<List<T>>