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From "Fabian Hueske (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-3002) Add an EitherType to the Java API
Date Fri, 13 Nov 2015 11:24:10 GMT

    [ https://issues.apache.org/jira/browse/FLINK-3002?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15003872#comment-15003872
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Fabian Hueske commented on FLINK-3002:
--------------------------------------

I am not exactly sure what you mean.
Type inference should work exactly as with a {{Tuple2<Left, Right>}}, no? For tuples
the types are defined by the user in the program (through function return types) and the TypeExtractor
creates the correct TypeInformation. I think that should work as well for {{Either<Left,
Right>}}.

> 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
>            Reporter: Stephan Ewen
>            Assignee: Vasia Kalavri
>             Fix For: 1.0
>
>
> 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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