com.atlassian.bitbucket.util

Class MoreStreams

java.lang.Object

com.atlassian.bitbucket.util.MoreStreams

public class MoreStreams
extends Object

Additional utilities for creating streams.

Method Summary

Modifier and Type	Method and Description
static <T> Iterable<T>	asIterable(Stream<T> stream) Returns the Stream as an Iterable.
static <T> Stream<T>	streamEnumeration(Enumeration<T> enumeration) Converts an Enumeration to a Stream.
static <T> Stream<T>	streamIterable(Iterable<T> iterable) Converts an Iterable to a Stream.
static <T> Stream<T>	streamOptional(Optional<T> optional) Converts an Optional to a single-element or empty Stream.

Methods inherited from class java.lang.Object

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

Method Detail

asIterable

@Nonnull
public static <T> Iterable<T> asIterable(@Nonnull
                                                  Stream<T> stream)

Returns the Stream as an Iterable.

Note: the returned Iterable can only be iterated once.

Type Parameters:

T - the type of element in the stream

Parameters:

stream - the stream

Returns:

the Stream as an Iterable

Since:

4.12

streamEnumeration

@Nonnull
public static <T> Stream<T> streamEnumeration(@Nonnull
                                                       Enumeration<T> enumeration)

Converts an Enumeration to a Stream.

Type Parameters:

T - the type of element in the Enumeration

Parameters:

enumeration - the Enumeration to stream

Returns:

a Stream over the provided enumeration

Throws:

NullPointerException - if the provided enumeration is null

Since:

4.9

streamIterable

@Nonnull
public static <T> Stream<T> streamIterable(@Nonnull
                                                    Iterable<T> iterable)

Converts an Iterable to a Stream.

Type Parameters:

T - the type of element in the Iterable

Parameters:

iterable - the Iterable to stream

Returns:

a Stream over the provided iterable

Throws:

NullPointerException - if the provided iterable is null

streamOptional

@Nonnull
public static <T> Stream<T> streamOptional(@Nonnull
                                                    Optional<T> optional)

Converts an Optional to a single-element or empty Stream.

Type Parameters:

T - the type of element in the Optional

Parameters:

optional - the Optional to stream

Returns:

a single-element Stream if the Optional is present; otherwise an empty Stream

Throws:

NullPointerException - if the provided optional is null