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https://issues.apache.org/jira/browse/FLINK-3002?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15008853#comment-15008853
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Vasia Kalavri commented on FLINK-3002:
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I agree [~StephanEwen], that was my reasoning as well. What [~aljoscha]
describes is exactly how I initially implemented this.
I just wasn't sure if it's allowed for {{createInstance}} to return {{null}}.
Now, since this is OK, {{copy(Either<L, R> from, Either<L, R> reuse)}} and
{{(Either<L, R> reuse, DataInputView source)}} can't make use of the {{reuse}}
record. Is this also OK?
Thank you both for the help!
> Add an EitherType to the Java API
> ---------------------------------
>
> Key: FLINK-3002
> URL: https://issues.apache.org/jira/browse/FLINK-3002
> Project: Flink
> Issue Type: New Feature
> Components: Java API
> Affects Versions: 0.10.0
> Reporter: Stephan Ewen
> Assignee: Vasia Kalavri
> Fix For: 1.0.0
>
>
> Either types are recurring patterns and should be serialized efficiently, so
> it makes sense to add them to the core Java API.
> Since Java does not have such a type as of Java 8, we would need to add our
> own version.
> The Scala API handles the Scala Either Type already efficiently. I would not
> use the Scala Either Type in the Java API, since we are trying to get the
> {{flink-java}} project "Scala free" for people that don't use Scala and o not
> want to worry about Scala version matches and mismatches.
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