org.jboss.weld.util.collections

Class Iterators

java.lang.Object

org.jboss.weld.util.collections.Iterators

public final class Iterators
extends java.lang.Object

Static utility methods for Iterator.

Author:

Martin Kouba

Method Summary

Modifier and Type	Method and Description
static <T> boolean	addAll(java.util.Collection<T> target, java.util.Iterator<? extends T> iterator) Add all elements in the iterator to the collection.
static <T> java.util.Iterator<T>	concat(java.util.Iterator<? extends java.util.Iterator<? extends T>> iterators) Combine the iterators into a single one.
static <T,R> java.util.Iterator<R>	transform(java.util.Iterator<T> iterator, java.util.function.Function<? super T,? extends R> function)

Methods inherited from class java.lang.Object

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

Method Detail

addAll

public static <T> boolean addAll(java.util.Collection<T> target,
                                 java.util.Iterator<? extends T> iterator)

Add all elements in the iterator to the collection.

Parameters:

target -

iterator -

Returns:

true if the target was modified, false otherwise

concat

public static <T> java.util.Iterator<T> concat(java.util.Iterator<? extends java.util.Iterator<? extends T>> iterators)

Combine the iterators into a single one.

Parameters:

iterators - An iterator of iterators

Returns:

a single combined iterator

transform

public static <T,R> java.util.Iterator<R> transform(java.util.Iterator<T> iterator,
                                                    java.util.function.Function<? super T,? extends R> function)

Parameters:

iterator -

function -

Returns:

an iterator that applies the given function to each element of the original iterator