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https://issues.apache.org/jira/browse/FLINK-11068?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16774935#comment-16774935
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vinoyang commented on FLINK-11068:
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I think [~sunjincheng121] 's proposal is feasible, which can make this issue
more focused on its subject. Should the introduction of Java expression be a
follow-up improvement plan?
> 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: Table API & SQL
> Reporter: Timo Walther
> Assignee: vinoyang
> 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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