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Dawid Wysakowicz commented on FLINK-11068: ------------------------------------------ Hi [~hequn8128] thanks for working on this issue. Ad.1 Yes Ad.2 I don't think this is feasible right now. This would be a breaking API change. We would need to deprecate the Window first. I don't see as much benefit so that it would make sense to do it now. Ad.3 Yes, we should not touch those for now. They might end up in the {{flink-table-api-scala-bridge}} at some point. By the way do you know when can you open PR for the interface extraction? I already started migrating the Table to java, so I think it would make sense to base it on top of your changes. > 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. -- This message was sent by Atlassian JIRA (v7.6.3#76005)