[jira] [Created] (FLINK-25363) Replace LogicalWindow and related planner expressions

["Timo Walther (Jira)" <ji...@apache.org>]

Timo Walther created FLINK-25363:
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             Summary: Replace LogicalWindow and related planner expressions
                 Key: FLINK-25363
                 URL: https://issues.apache.org/jira/browse/FLINK-25363
             Project: Flink
          Issue Type: Sub-task
          Components: API / Python, Table SQL / Planner
            Reporter: Timo Walther
            Assignee: Francesco Guardiani


The following classes are legacy from the old Table API.

{code}
import org.apache.flink.table.planner.expressions.PlannerNamedWindowProperty;
import org.apache.flink.table.planner.expressions.PlannerProctimeAttribute;
import org.apache.flink.table.planner.expressions.PlannerRowtimeAttribute;
import org.apache.flink.table.planner.expressions.PlannerWindowEnd;
import org.apache.flink.table.planner.expressions.PlannerWindowProperty;
import org.apache.flink.table.planner.expressions.PlannerWindowStart;
import org.apache.flink.table.planner.plan.logical.LogicalWindow;
import org.apache.flink.table.planner.plan.logical.SessionGroupWindow;
import org.apache.flink.table.planner.plan.logical.SlidingGroupWindow;
import org.apache.flink.table.planner.plan.logical.TumblingGroupWindow;
{code}

However, currently they are used in {{ExecNode}} and partially are serialized into the JSON plan. Also Python depends on it. Instead we should introduce a small POJO structure with enums. E.g. {{WindowSpec}} with {{WindowProperty}} enum or so. It can be located in the runtime module if Python needs this information during runtime.



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