Package org.apache.calcite.rel.rules

Class SemiJoinRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

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

org.apache.calcite.rel.rules.SemiJoinRule

All Implemented Interfaces:

TransformationRule

Direct Known Subclasses:

SemiJoinRule.JoinOnUniqueToSemiJoinRule, SemiJoinRule.JoinToSemiJoinRule, SemiJoinRule.ProjectToSemiJoinRule

public abstract class SemiJoinRule
extends RelRule<SemiJoinRule.Config>
implements TransformationRule

Planner rule that creates a SemiJoin from a Join on top of a LogicalAggregate or on a RelNode which is unique for join's right keys.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	SemiJoinRule.Config	Rule configuration.
static class	SemiJoinRule.JoinOnUniqueToSemiJoinRule	SemiJoinRule that matches a Project on top of a Join with a RelNode which is unique for Join's right keys.
static class	SemiJoinRule.JoinToSemiJoinRule	SemiJoinRule that matches a Join with an empty Aggregate as its right input.
static class	SemiJoinRule.ProjectToSemiJoinRule	SemiJoinRule that matches a Project on top of a Join with an Aggregate as its right child.

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
protected	SemiJoinRule(SemiJoinRule.Config config)	Creates a SemiJoinRule.

Method Summary

Modifier and Type	Method	Description
protected void	perform(RelOptRuleCall call, @Nullable Project project, Join join, RelNode left, Aggregate aggregate)

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, onMatch, 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

SemiJoinRule

protected SemiJoinRule(SemiJoinRule.Config config)

Creates a SemiJoinRule.

Method Details

perform

protected void perform(RelOptRuleCall call,
 @Nullable Project project,
 Join join,
 RelNode left,
 Aggregate aggregate)