org.apache.flink.util

Class OptionalUtils

java.lang.Object

org.apache.flink.util.OptionalUtils

@Internal
public class OptionalUtils
extends Object

Utilities for working with Optional.

Method Summary

Modifier and Type	Method and Description
static <T> Optional<T>	firstPresent(Optional<T>... opts) Returns the first Optional which is present.
static <T> java.util.stream.Stream<T>	stream(Optional<T> opt) Converts the given Optional into a Stream.

Methods inherited from class java.lang.Object

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

Method Detail

stream

public static <T> java.util.stream.Stream<T> stream(Optional<T> opt)

Converts the given Optional into a Stream.

This is akin to Optional#stream available in JDK9+.

firstPresent

@SafeVarargs
public static <T> Optional<T> firstPresent(Optional<T>... opts)

Returns the first Optional which is present.