Examples with StreamPhysicalLocalWindowAggregate org.apache.flink.table.planner.plan.nodes.physical.stream.StreamPhysicalLocalWindowAggregate used on opensource projects

Example 1 with StreamPhysicalLocalWindowAggregate

use of org.apache.flink.table.planner.plan.nodes.physical.stream.StreamPhysicalLocalWindowAggregate in project flink by apache.

the class TwoStageOptimizedWindowAggregateRule method onMatch.

@Override
public void onMatch(RelOptRuleCall call) {
    final StreamPhysicalWindowAggregate windowAgg = call.rel(0);
    final RelNode realInput = call.rel(2);
    final WindowingStrategy windowing = windowAgg.windowing();
    RelTraitSet localTraitSet = realInput.getTraitSet().plus(ModifyKindSetTrait.INSERT_ONLY()).plus(UpdateKindTrait.NONE());
    StreamPhysicalLocalWindowAggregate localAgg = new StreamPhysicalLocalWindowAggregate(windowAgg.getCluster(), localTraitSet, realInput, windowAgg.grouping(), windowAgg.aggCalls(), windowing);
    // grouping keys is forwarded by local agg, use indices instead of groupings
    int[] globalGrouping = IntStream.range(0, windowAgg.grouping().length).toArray();
    FlinkRelDistribution globalDistribution = createDistribution(globalGrouping);
    // create exchange if needed
    RelNode newInput = FlinkExpandConversionRule.satisfyDistribution(FlinkConventions.STREAM_PHYSICAL(), localAgg, globalDistribution);
    RelTraitSet globalAggProvidedTraitSet = windowAgg.getTraitSet();
    // we put sliceEnd/windowEnd at the end of local output fields
    int endIndex = localAgg.getRowType().getFieldCount() - 1;
    final WindowingStrategy globalWindowing;
    if (windowing instanceof TimeAttributeWindowingStrategy) {
        globalWindowing = new SliceAttachedWindowingStrategy(windowing.getWindow(), windowing.getTimeAttributeType(), endIndex);
    } else {
        globalWindowing = new WindowAttachedWindowingStrategy(windowing.getWindow(), windowing.getTimeAttributeType(), endIndex);
    }
    StreamPhysicalGlobalWindowAggregate globalAgg = new StreamPhysicalGlobalWindowAggregate(windowAgg.getCluster(), globalAggProvidedTraitSet, newInput, realInput.getRowType(), globalGrouping, windowAgg.aggCalls(), globalWindowing, windowAgg.namedWindowProperties());
    call.transformTo(globalAgg);
}