Package org.apache.calcite.rel.rules

Class AggregateUnionAggregateRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

org.apache.calcite.plan.RelRule<AggregateUnionAggregateRule.Config>

org.apache.calcite.rel.rules.AggregateUnionAggregateRule

All Implemented Interfaces:

TransformationRule

@Enclosing
public class AggregateUnionAggregateRule
extends RelRule<AggregateUnionAggregateRule.Config>
implements TransformationRule

Planner rule that matches Aggregates beneath a Union and pulls them up, so that a single Aggregate removes duplicates.

This rule only handles cases where the Unions still have only two inputs.

See Also:

• CoreRules.AGGREGATE_UNION_AGGREGATE
• CoreRules.AGGREGATE_UNION_AGGREGATE_FIRST
• CoreRules.AGGREGATE_UNION_AGGREGATE_SECOND

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	AggregateUnionAggregateRule.Config	Rule configuration.

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

RelRule.Done, RelRule.MatchHandler<R extends RelOptRule>, RelRule.OperandBuilder, RelRule.OperandDetailBuilder<R extends RelNode>, RelRule.OperandTransform

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

RelOptRule.ConverterRelOptRuleOperand

Field Summary

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

config

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

description, operands, relBuilderFactory

Constructor Summary

Constructors

Modifier	Constructor	Description
	AggregateUnionAggregateRule(Class<? extends Aggregate> aggregateClass, Class<? extends Union> unionClass, Class<? extends RelNode> firstUnionInputClass, Class<? extends RelNode> secondUnionInputClass, RelBuilderFactory relBuilderFactory, String desc)	Deprecated.
	AggregateUnionAggregateRule(Class<? extends Aggregate> aggregateClass, RelFactories.AggregateFactory aggregateFactory, Class<? extends Union> unionClass, RelFactories.SetOpFactory setOpFactory)	Deprecated.
protected	AggregateUnionAggregateRule(AggregateUnionAggregateRule.Config config)	Creates an AggregateUnionAggregateRule.

Method Summary

Modifier and Type	Method	Description
void	onMatch(RelOptRuleCall call)	Receives notification about a rule match.

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

any, convert, convert, 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

Constructor Details

AggregateUnionAggregateRule

protected AggregateUnionAggregateRule(AggregateUnionAggregateRule.Config config)

Creates an AggregateUnionAggregateRule.

AggregateUnionAggregateRule

@Deprecated
public AggregateUnionAggregateRule(Class<? extends Aggregate> aggregateClass,
 Class<? extends Union> unionClass,
 Class<? extends RelNode> firstUnionInputClass,
 Class<? extends RelNode> secondUnionInputClass,
 RelBuilderFactory relBuilderFactory,
 String desc)

Deprecated.

AggregateUnionAggregateRule

@Deprecated
public AggregateUnionAggregateRule(Class<? extends Aggregate> aggregateClass,
 RelFactories.AggregateFactory aggregateFactory,
 Class<? extends Union> unionClass,
 RelFactories.SetOpFactory setOpFactory)

Deprecated.

Method Details

onMatch

public void onMatch(RelOptRuleCall call)

Description copied from class: RelOptRule

Receives notification about a rule match. At the time that this method is called, call.rels holds the set of relational expressions which match the operands to the rule; call.rels[0] is the root expression.

Typically a rule would check that the nodes are valid matches, creates a new expression, then calls back RelOptRuleCall.transformTo(org.apache.calcite.rel.RelNode, java.util.Map<org.apache.calcite.rel.RelNode, org.apache.calcite.rel.RelNode>, org.apache.calcite.plan.RelHintsPropagator) to register the expression.

Specified by:

onMatch in class RelOptRule

Parameters:

call - Rule call

See Also:

• RelOptRule.matches(RelOptRuleCall)