org.jboss.weld.util.collections

Class Iterables

java.lang.Object

org.jboss.weld.util.collections.Iterables

public final class Iterables
extends Object

Static utility methods for Iterable.

Author:

Martin Kouba

Method Summary

Modifier and Type	Method and Description
static <T> boolean	addAll(Collection<T> target, Iterable<? extends T> iterable) Add all elements in the iterable to the collection.
static <T> Iterable<T>	concat(Iterable<? extends Iterable<? extends T>> iterables) Combine the iterables into a single one.
static <T> Iterable<T>	concat(Iterable<? extends T> a, Iterable<? extends T> b) Combine the iterables into a single one.
static <T,R> Iterable<R>	flatMap(Iterable<T> iterable, Function<? super T,? extends Iterable<? extends R>> function)
static <T> Iterator<Iterator<? extends T>>	iterators(Iterable<? extends Iterable<? extends T>> iterables)
static <T> String	toMultiRowString(Iterable<T> iterable)
static <T,R> Iterable<R>	transform(Iterable<T> iterable, 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(Collection<T> target,
                                 Iterable<? extends T> iterable)

Add all elements in the iterable to the collection.

Parameters:

target -

iterable -

Returns:

true if the target was modified, false otherwise

concat

public static <T> Iterable<T> concat(Iterable<? extends Iterable<? extends T>> iterables)

Combine the iterables into a single one.

Parameters:

iterables -

Returns:

a single combined iterable

concat

public static <T> Iterable<T> concat(Iterable<? extends T> a,
                                     Iterable<? extends T> b)

Combine the iterables into a single one.

iterators

public static <T> Iterator<Iterator<? extends T>> iterators(Iterable<? extends Iterable<? extends T>> iterables)

Parameters:

iterables -

Returns:

an iterator over iterators from the given iterable of iterables

transform

public static <T,R> Iterable<R> transform(Iterable<T> iterable,
                                          Function<? super T,? extends R> function)

flatMap

public static <T,R> Iterable<R> flatMap(Iterable<T> iterable,
                                        Function<? super T,? extends Iterable<? extends R>> function)

toMultiRowString

public static <T> String toMultiRowString(Iterable<T> iterable)

Parameters:

iterable -

Returns:

See Also:

WeldCollections.toMultiRowString(Collection)