com.hazelcast.util
Class IterableUtil

java.lang.Object
  com.hazelcast.util.IterableUtil

public final class IterableUtil
extends Object

Utility functions for working with Iterable

Method Summary

static <T> T	getFirst(Iterable<T> iterable, T defaultValue)
static <T,R> Iterator<R>	limit(Iterator<R> iterator, int limit)
static <T,R> Iterable<R>	map(Iterable<T> iterable, IFunction<T,R> mapper) Transform the Iterable by applying a function to each element
static <T,R> Iterator<R>	map(Iterator<T> iterator, IFunction<T,R> mapper) Transform the Iterator by applying a function to each element
static <T> Iterable<T>	nullToEmpty(Iterable<T> iterable) Return empty Iterable if argument is null

Methods inherited from class java.lang.Object

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

Method Detail

getFirst

public static <T> T getFirst(Iterable<T> iterable,
                             T defaultValue)

Returns:

First element or defaultValue if iterable is empty

map

public static <T,R> Iterable<R> map(Iterable<T> iterable,
                                    IFunction<T,R> mapper)

Transform the Iterable by applying a function to each element

map

public static <T,R> Iterator<R> map(Iterator<T> iterator,
                                    IFunction<T,R> mapper)

Transform the Iterator by applying a function to each element

limit

public static <T,R> Iterator<R> limit(Iterator<R> iterator,
                                      int limit)

nullToEmpty

public static <T> Iterable<T> nullToEmpty(Iterable<T> iterable)

Return empty Iterable if argument is null