Package org.apache.flink.table.planner.plan.rules.physical.batch

Class PushLocalHashAggWithCalcIntoScanRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

org.apache.flink.table.planner.plan.rules.physical.batch.PushLocalAggIntoScanRuleBase

org.apache.flink.table.planner.plan.rules.physical.batch.PushLocalHashAggWithCalcIntoScanRule

public class PushLocalHashAggWithCalcIntoScanRule
extends PushLocalAggIntoScanRuleBase

Planner rule that tries to push a local hash aggregate which with calc into a BatchPhysicalTableSourceScan whose table is a TableSourceTable with a source supporting SupportsAggregatePushDown.

Suppose we have the original physical plan:

 BatchPhysicalHashAggregate (global)
 +- BatchPhysicalExchange (hash by group keys if group keys is not empty, else singleton)
    +- BatchPhysicalLocalHashAggregate (local)
       +- BatchPhysicalCalc (filed projection only)
          +- BatchPhysicalTableSourceScan
 

This physical plan will be rewritten to:

 BatchPhysicalHashAggregate (global)
 +- BatchPhysicalExchange (hash by group keys if group keys is not empty, else singleton)
    +- BatchPhysicalTableSourceScan (with local aggregate pushed down)
 

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.calcite.plan.RelOptRule

org.apache.calcite.plan.RelOptRule.ConverterRelOptRuleOperand

Field Summary

Fields

Modifier and Type	Field	Description
static final PushLocalHashAggWithCalcIntoScanRule	INSTANCE

Fields inherited from class org.apache.calcite.plan.RelOptRule

description, operands, relBuilderFactory

Constructor Summary

Constructors

Constructor	Description
PushLocalHashAggWithCalcIntoScanRule()

Method Summary

Modifier and Type	Method	Description
boolean	matches(org.apache.calcite.plan.RelOptRuleCall call)
void	onMatch(org.apache.calcite.plan.RelOptRuleCall call)

Methods inherited from class org.apache.flink.table.planner.plan.rules.physical.batch.PushLocalAggIntoScanRuleBase

canPushDown, getRefFiledIndex, isInputRefOnly, isProjectionNotPushedDown, pushLocalAggregateIntoScan, translateAggCallArgIndex, translateGroupingArgIndex

Methods inherited from class org.apache.calcite.plan.RelOptRule

any, convert, convert, convertList, convertOperand, convertOperand, equals, equals, getOperand, getOperands, getOutConvention, getOutTrait, hashCode, none, operand, operand, operand, operand, operand, operandJ, operandJ, some, toString, unordered

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

INSTANCE

public static final PushLocalHashAggWithCalcIntoScanRule INSTANCE

Constructor Details

PushLocalHashAggWithCalcIntoScanRule

public PushLocalHashAggWithCalcIntoScanRule()

Method Details

matches

public boolean matches(org.apache.calcite.plan.RelOptRuleCall call)

Overrides:

matches in class org.apache.calcite.plan.RelOptRule

onMatch

public void onMatch(org.apache.calcite.plan.RelOptRuleCall call)

Specified by:

onMatch in class org.apache.calcite.plan.RelOptRule