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https://issues.apache.org/jira/browse/FLINK-15674?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Flink Jira Bot updated FLINK-15674:
-----------------------------------
Labels: auto-deprioritized-major auto-unassigned stale-minor usability
(was: auto-deprioritized-major auto-unassigned usability)
I am the [Flink Jira Bot|https://github.com/apache/flink-jira-bot/] and I help
the community manage its development. I see this issues has been marked as
Minor but is unassigned and neither itself nor its Sub-Tasks have been updated
for 180 days. I have gone ahead and marked it "stale-minor". If this ticket is
still Minor, please either assign yourself or give an update. Afterwards,
please remove the label or in 7 days the issue will be deprioritized.
> Let Java and Scala Type Extraction go through the same stack
> ------------------------------------------------------------
>
> Key: FLINK-15674
> URL: https://issues.apache.org/jira/browse/FLINK-15674
> Project: Flink
> Issue Type: Improvement
> Components: API / DataStream
> Reporter: Stephan Ewen
> Priority: Minor
> Labels: auto-deprioritized-major, auto-unassigned, stale-minor,
> usability
>
> Currently, the Java and Scala Type Extraction stacks are completely different.
> * Java uses the {{TypeExtractor}}
> * Scala uses the type extraction macros.
> As a result, the same class can be extracted as different types in the
> different stacks, which can lead to very confusing results. In particular,
> when you use the TypeExtractor on Scala Classes, you always get a
> {{GenericType}}.
> *Suggestion for New Design*
> There should be one type extraction stack, based on the TypeExtractor.
> * The TypeExtractor should be extensible and load additions through service
> loaders, similar as it currently loads Avro as an extension.
> * The Scala Type Extraction logic should be such an extension.
> * The Scala Marcos would only capture the {{Type}} (as in Java type), meaning
> {{Class}}, or {{ParameterizedType}}, or {{Array}} (etc.) and delegate this to
> the TypeExtractor.
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