Package org.apache.calcite.rel.rules

Class AggregateStarTableRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

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

org.apache.calcite.rel.rules.AggregateStarTableRule

All Implemented Interfaces:

TransformationRule

Direct Known Subclasses:

AggregateProjectStarTableRule

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

Planner rule that matches an Aggregate on top of a StarTable.StarTableScan.

This pattern indicates that an aggregate table may exist. The rule asks the star table for an aggregate table at the required level of aggregation.

See Also:

• AggregateProjectStarTableRule
• CoreRules.AGGREGATE_STAR_TABLE
• CoreRules.AGGREGATE_PROJECT_STAR_TABLE

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	AggregateStarTableRule.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
	AggregateStarTableRule(RelOptRuleOperand operand, RelBuilderFactory relBuilderFactory, String description)	Deprecated.
protected	AggregateStarTableRule(AggregateStarTableRule.Config config)	Creates an AggregateStarTableRule.

Method Summary

Modifier and Type	Method	Description
protected void	apply(RelOptRuleCall call, @Nullable Project postProject, Aggregate aggregate, StarTable.StarTableScan scan)
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

AggregateStarTableRule

protected AggregateStarTableRule(AggregateStarTableRule.Config config)

Creates an AggregateStarTableRule.

AggregateStarTableRule

@Deprecated
public AggregateStarTableRule(RelOptRuleOperand operand,
 RelBuilderFactory relBuilderFactory,
 String description)

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)

apply

protected void apply(RelOptRuleCall call,
 @Nullable Project postProject,
 Aggregate aggregate,
 StarTable.StarTableScan scan)