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From "Hequn Cheng (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-11068) Convert the API classes *Table, *Window to interfaces
Date Wed, 13 Mar 2019 15:24:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-11068?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16791806#comment-16791806
] 

Hequn Cheng commented on FLINK-11068:
-------------------------------------

I have created FLINK-11908 for porting window classes and we can discuss window problems in
it. I will copy the comments above into FLINK-11908. 

> Convert the API classes *Table, *Window to interfaces
> -----------------------------------------------------
>
>                 Key: FLINK-11068
>                 URL: https://issues.apache.org/jira/browse/FLINK-11068
>             Project: Flink
>          Issue Type: Improvement
>          Components: API / Table SQL
>            Reporter: Timo Walther
>            Assignee: Hequn Cheng
>            Priority: Major
>
> A more detailed description can be found in [FLIP-32|https://cwiki.apache.org/confluence/display/FLINK/FLIP-32%3A+Restructure+flink-table+for+future+contributions].
> This includes: Table, GroupedTable, WindowedTable, WindowGroupedTable, OverWindowedTable,
Window, OverWindow
> We can keep the "Table" Scala implementation in a planner module until it has been converted
to Java.
> We can add a method to the planner later to give us a concrete instance. This is one
possibility to have a smooth transition period instead of changing all classes at once.



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