Package cn.boboweike.carrot.utils.streams

Class StreamUtils

java.lang.Object

cn.boboweike.carrot.utils.streams.StreamUtils

public final class StreamUtils
extends Object

Method Summary

Modifier and Type	Method	Description
static <T> Collector<T,List<T>,List<T>>	batchCollector(int batchSize, Consumer<List<T>> batchProcessor)	Creates a new batch collector
static <X,Y> Stream<Y>	ofType(Collection<X> items, Class<Y> clazz)
static <X,Y> Stream<Y>	ofType(Stream<X> stream, Class<Y> clazz)
static <T> Collector<T,?,T>	single()

Methods inherited from class java.lang.Object

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

Method Detail

batchCollector

public static <T> Collector<T,List<T>,List<T>> batchCollector(int batchSize,
                                                                          Consumer<List<T>> batchProcessor)

Creates a new batch collector

Type Parameters:

T - the type of elements being processed

Parameters:

batchSize - the batch size after which the batchProcessor should be called

batchProcessor - the batch processor which accepts batches of records to process

Returns:

a batch collector instance

ofType

public static <X,Y> Stream<Y> ofType(Collection<X> items,
                                           Class<Y> clazz)

ofType

public static <X,Y> Stream<Y> ofType(Stream<X> stream,
                                           Class<Y> clazz)

single

public static <T> Collector<T,?,T> single()