com.atlassian.jira.util

Class EitherUtils

java.lang.Object

com.atlassian.jira.util.EitherUtils

public final class EitherUtils
extends Object

Utility functions for Eithers.

Since:

v6.4

Method Summary

Modifier and Type	Method and Description
static <L,R> io.atlassian.fugue.Pair<List<L>,List<R>>	splitEithers(Iterable<io.atlassian.fugue.Either<L,R>> eithers) Transforms list of Eithers into two lists, which contains left and right values.
static <L extends RuntimeException,R> R	unwrapEither(io.atlassian.fugue.Either<L,R> either) Gets the right value from an Either or throws its left value.

Methods inherited from class java.lang.Object

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

Method Detail

splitEithers

public static <L,R> io.atlassian.fugue.Pair<List<L>,List<R>> splitEithers(Iterable<io.atlassian.fugue.Either<L,R>> eithers)

Transforms list of Eithers into two lists, which contains left and right values.

unwrapEither

public static <L extends RuntimeException,R> R unwrapEither(io.atlassian.fugue.Either<L,R> either)

Gets the right value from an Either or throws its left value. Requires the left type to be a RuntimeException so that it can be used directly with higher-order functions like Optional.map(java.util.function.Function<? super T, ? extends U>) without needing to handle checked exceptions explicitly.

Type Parameters:

L - the left type of the either

R - the right type of the either

Parameters:

either - the Either to unwrap

Returns:

the unwrapped right value

Throws:

L - if the either has a left value