Package org.sellcom.core.collection

Class Iterables

java.lang.Object

org.sellcom.core.collection.Iterables

public class Iterables
extends java.lang.Object

Operations with Iterables.

Since:

1.0

Method Summary

Modifier and Type	Method	Description
static <E> java.lang.Iterable<E>	emptyToNull(java.lang.Iterable<E> iterable)	Returns the given iterable if it is non-empty, null otherwise.
static boolean	isNullOrEmpty(java.lang.Iterable<?> iterable)	Checks whether the given iterable is null or empty.
static <E> java.lang.Iterable<E>	nullToEmpty(java.lang.Iterable<E> iterable)	Returns the given iterable if it is non-empty, empty iterable otherwise.
static <E> java.util.stream.Stream<E>	parallelStream(java.lang.Iterable<E> iterable)	Returns a parallel Stream over the elements of the given iterable.
static <E> java.util.stream.Stream<E>	stream(java.lang.Iterable<E> iterable)	Returns a sequential Stream over the elements of the given iterable.
static <E> java.util.List<E>	toList(java.lang.Iterable<E> elements)	Returns the given iterable converted to a List.
static <E> java.util.NavigableSet<E>	toNavigableSet(java.lang.Iterable<E> elements)	Returns the given iterable converted to a NavigableSet.
static <E> java.util.Set<E>	toSet(java.lang.Iterable<E> elements)	Returns the given iterable converted to a Set.

Methods inherited from class java.lang.Object

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

Method Detail

emptyToNull

public static <E> java.lang.Iterable<E> emptyToNull(java.lang.Iterable<E> iterable)

Returns the given iterable if it is non-empty, null otherwise.

Since:

1.0

isNullOrEmpty

public static boolean isNullOrEmpty(java.lang.Iterable<?> iterable)

Checks whether the given iterable is null or empty.

Since:

1.0

nullToEmpty

public static <E> java.lang.Iterable<E> nullToEmpty(java.lang.Iterable<E> iterable)

Returns the given iterable if it is non-empty, empty iterable otherwise.

Since:

1.0

parallelStream

public static <E> java.util.stream.Stream<E> parallelStream(java.lang.Iterable<E> iterable)

Returns a parallel Stream over the elements of the given iterable.

Throws:

java.lang.IllegalArgumentException - if iterable is null

Since:

1.0

stream

public static <E> java.util.stream.Stream<E> stream(java.lang.Iterable<E> iterable)

Returns a sequential Stream over the elements of the given iterable.

Throws:

java.lang.IllegalArgumentException - if iterable is null

Since:

1.0

toList

public static <E> java.util.List<E> toList(java.lang.Iterable<E> elements)

Returns the given iterable converted to a List.

Throws:

java.lang.IllegalArgumentException - if elements are null

Since:

1.0

toNavigableSet

public static <E> java.util.NavigableSet<E> toNavigableSet(java.lang.Iterable<E> elements)

Returns the given iterable converted to a NavigableSet.

Throws:

java.lang.IllegalArgumentException - if elements are null

Since:

1.0

toSet

public static <E> java.util.Set<E> toSet(java.lang.Iterable<E> elements)

Returns the given iterable converted to a Set.

Throws:

java.lang.IllegalArgumentException - if elements are null

Since:

1.0