Package org.apache.calcite.sql2rel

Class RelDecorrelator.AdjustProjectForCountAggregateRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

org.apache.calcite.sql2rel.RelDecorrelator.AdjustProjectForCountAggregateRule

Enclosing class:

RelDecorrelator

private final class RelDecorrelator.AdjustProjectForCountAggregateRule
extends RelOptRule

Planner rule that adjusts projects when counts are added.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) boolean	flavor

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

description, operands, relBuilderFactory

Constructor Summary

Constructors

Constructor	Description
AdjustProjectForCountAggregateRule(boolean flavor, RelBuilderFactory relBuilderFactory)

Method Summary

Modifier and Type	Method	Description
void	onMatch(RelOptRuleCall call)	Receives notification about a rule match.
private void	onMatch2(RelOptRuleCall call, LogicalCorrelate correlate, RelNode leftInput, LogicalProject aggOutputProject, LogicalAggregate aggregate)

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

flavor

final boolean flavor

Constructor Detail

AdjustProjectForCountAggregateRule

AdjustProjectForCountAggregateRule(boolean flavor,
                                   RelBuilderFactory relBuilderFactory)

Method Detail

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>) to register the expression.

Specified by:

onMatch in class RelOptRule

Parameters:

call - Rule call

See Also:

RelOptRule.matches(RelOptRuleCall)

onMatch2

private void onMatch2(RelOptRuleCall call,
                      LogicalCorrelate correlate,
                      RelNode leftInput,
                      LogicalProject aggOutputProject,
                      LogicalAggregate aggregate)