Package org.linkki.util

Class Optionals.Either<T>

java.lang.Object

org.linkki.util.Optionals.Either<T>

Enclosing class:

Optionals

public static class Optionals.Either<T>
extends Object

Wrapper around an Optional that offers Java 9's Optional#or method.

Method Summary

Modifier and Type	Method	Description
Optional<T>	or(Supplier<? extends Optional<? extends T>> supplier)	If a value is present, returns an Optional describing the value, otherwise returns an Optional produced by the supplying function.

Methods inherited from class java.lang.Object

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

Method Detail

or

public Optional<T> or(Supplier<? extends Optional<? extends T>> supplier)

If a value is present, returns an Optional describing the value, otherwise returns an Optional produced by the supplying function.

Parameters:

supplier - the supplying function that produces an Optional to be returned

Returns:

returns an Optional describing the value of this Optional, if a value is present, otherwise an Optional produced by the supplying function.

Throws:

NullPointerException - if the supplying function is null or produces a null result