Package org.apache.calcite.rel.rules

Class SemiJoinRule.ProjectToSemiJoinRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

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

org.apache.calcite.rel.rules.SemiJoinRule

org.apache.calcite.rel.rules.SemiJoinRule.ProjectToSemiJoinRule

All Implemented Interfaces:

TransformationRule

Enclosing class:

SemiJoinRule

public static class SemiJoinRule.ProjectToSemiJoinRule
extends SemiJoinRule

SemiJoinRule that matches a Project on top of a Join with an Aggregate as its right child.

See Also:

• CoreRules.PROJECT_TO_SEMI_JOIN

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	SemiJoinRule.ProjectToSemiJoinRule.ProjectToSemiJoinRuleConfig	Rule configuration.

Nested classes/interfaces inherited from class org.apache.calcite.rel.rules.SemiJoinRule

SemiJoinRule.Config, SemiJoinRule.JoinOnUniqueToSemiJoinRule, SemiJoinRule.JoinToSemiJoinRule, SemiJoinRule.ProjectToSemiJoinRule

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
	ProjectToSemiJoinRule(Class<Project> projectClass, Class<Join> joinClass, Class<Aggregate> aggregateClass, RelBuilderFactory relBuilderFactory, String description)	Deprecated.
protected	ProjectToSemiJoinRule(SemiJoinRule.ProjectToSemiJoinRule.ProjectToSemiJoinRuleConfig config)	Creates a ProjectToSemiJoinRule.

Method Summary

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

Methods inherited from class org.apache.calcite.rel.rules.SemiJoinRule

perform

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

ProjectToSemiJoinRule

protected ProjectToSemiJoinRule(SemiJoinRule.ProjectToSemiJoinRule.ProjectToSemiJoinRuleConfig config)

Creates a ProjectToSemiJoinRule.

ProjectToSemiJoinRule

@Deprecated
public ProjectToSemiJoinRule(Class<Project> projectClass,
 Class<Join> joinClass,
 Class<Aggregate> aggregateClass,
 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)