org.apache.flink.table.planner.plan.rules.logical

Class FlinkAggregateExpandDistinctAggregatesRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

org.apache.flink.table.planner.plan.rules.logical.FlinkAggregateExpandDistinctAggregatesRule

public final class FlinkAggregateExpandDistinctAggregatesRule
extends org.apache.calcite.plan.RelOptRule

Planner rule that expands distinct aggregates (such as COUNT(DISTINCT x)) from a Aggregate.

How this is done depends upon the arguments to the function. If all functions have the same argument (e.g. COUNT(DISTINCT x), SUM(DISTINCT x) both have the argument x) then one extra Aggregate is sufficient.

If there are multiple arguments (e.g. COUNT(DISTINCT x), COUNT(DISTINCT y)) the rule creates separate Aggregates and combines using a Join.

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 and Description
static FlinkAggregateExpandDistinctAggregatesRule	INSTANCE The default instance of the rule; operates only on logical expressions.
static FlinkAggregateExpandDistinctAggregatesRule	JOIN Instance of the rule that operates only on logical expressions and generates a join.
boolean	useGroupingSets

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

description, operands, relBuilderFactory

Constructor Summary

Constructors

Constructor and Description
FlinkAggregateExpandDistinctAggregatesRule(Class<? extends org.apache.calcite.rel.core.Aggregate> clazz, boolean useGroupingSets, org.apache.calcite.tools.RelBuilderFactory relBuilderFactory)
FlinkAggregateExpandDistinctAggregatesRule(Class<? extends org.apache.calcite.rel.logical.LogicalAggregate> clazz, boolean useGroupingSets, org.apache.calcite.rel.core.RelFactories.JoinFactory joinFactory) Deprecated.
FlinkAggregateExpandDistinctAggregatesRule(Class<? extends org.apache.calcite.rel.logical.LogicalAggregate> clazz, org.apache.calcite.rel.core.RelFactories.JoinFactory joinFactory) Deprecated.

Method Summary

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

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

any, convert, convert, convertList, convertOperand, convertOperand, equals, equals, getOperand, getOperands, getOutConvention, getOutTrait, hashCode, matches, 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 Detail

INSTANCE

public static final FlinkAggregateExpandDistinctAggregatesRule INSTANCE

The default instance of the rule; operates only on logical expressions.

JOIN

public static final FlinkAggregateExpandDistinctAggregatesRule JOIN

Instance of the rule that operates only on logical expressions and generates a join.

useGroupingSets

public final boolean useGroupingSets

Constructor Detail

FlinkAggregateExpandDistinctAggregatesRule

public FlinkAggregateExpandDistinctAggregatesRule(Class<? extends org.apache.calcite.rel.core.Aggregate> clazz,
                                                  boolean useGroupingSets,
                                                  org.apache.calcite.tools.RelBuilderFactory relBuilderFactory)

FlinkAggregateExpandDistinctAggregatesRule

@Deprecated
public FlinkAggregateExpandDistinctAggregatesRule(Class<? extends org.apache.calcite.rel.logical.LogicalAggregate> clazz,
                                                              boolean useGroupingSets,
                                                              org.apache.calcite.rel.core.RelFactories.JoinFactory joinFactory)

Deprecated.

FlinkAggregateExpandDistinctAggregatesRule

@Deprecated
public FlinkAggregateExpandDistinctAggregatesRule(Class<? extends org.apache.calcite.rel.logical.LogicalAggregate> clazz,
                                                              org.apache.calcite.rel.core.RelFactories.JoinFactory joinFactory)

Deprecated.

Method Detail

onMatch

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

Specified by:

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