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Posted to issues@flink.apache.org by "Fabian Hueske (JIRA)" <ji...@apache.org> on 2017/05/03 13:37:04 UTC

[jira] [Updated] (FLINK-6334) Refactoring UDTF interface

     [ https://issues.apache.org/jira/browse/FLINK-6334?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Fabian Hueske updated FLINK-6334:
---------------------------------
    Fix Version/s: 1.3.0

> Refactoring UDTF interface
> --------------------------
>
>                 Key: FLINK-6334
>                 URL: https://issues.apache.org/jira/browse/FLINK-6334
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table API & SQL
>            Reporter: Ruidong Li
>            Assignee: Ruidong Li
>            Priority: Blocker
>             Fix For: 1.3.0
>
>
> The current UDTF leverages the table.join(expression) interface, which is not a proper interface in terms of semantics. We would like to refactor this to let UDTF use table.join(table) interface. Very briefly,  UDTF's apply method will return a Table Type, so Join(UDTF('a, 'b, ...) as 'c) shall be viewed as join(Table)



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