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https://issues.apache.org/jira/browse/FLINK-6637?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shaoxuan Wang updated FLINK-6637:
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Component/s: Table API & SQL
> Move registerFunction to TableEnvironment
> -----------------------------------------
>
> Key: FLINK-6637
> URL: https://issues.apache.org/jira/browse/FLINK-6637
> Project: Flink
> Issue Type: Improvement
> Components: Table API & SQL
> Reporter: Shaoxuan Wang
> Assignee: Shaoxuan Wang
>
> We are trying to unify the stream and batch. This unification should cover
> the tableAPI&SQL query as well as the function registration (as part of DDL).
> Currently the registerFunction for UDTF and UDAGG are defined in
> BatchTableEnvironment and StreamTableEnvironment separately. We should move
> registerFunction to TableEnvironment.
> The reason that we did not put registerFunction into TableEnvironment for
> UDTF and UDAGG is that we need different registerFunction for java and scala
> codes, as java needs a special way to generate and pass implicit value of
> typeInfo:
> {code:xml}
> implicit val typeInfo: TypeInformation[T] = TypeExtractor
> .createTypeInfo(tf, classOf[TableFunction[_]], tf.getClass, 0)
> .asInstanceOf[TypeInformation[T]]
> {code}
> It seems that we need duplicate TableEnvironment class, one for java and one
> for scala.
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