Package org.apache.flink.table.planner.plan.rules.logical

Class FlinkProjectCalcMergeRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

org.apache.calcite.plan.RelRule<org.apache.calcite.rel.rules.ProjectCalcMergeRule.Config>

org.apache.calcite.rel.rules.ProjectCalcMergeRule

org.apache.flink.table.planner.plan.rules.logical.FlinkProjectCalcMergeRule

All Implemented Interfaces:

org.apache.calcite.rel.rules.TransformationRule

public class FlinkProjectCalcMergeRule
extends org.apache.calcite.rel.rules.ProjectCalcMergeRule

Extends calcite's ProjectMergeRule, modification: only merge the two neighbouring Project and Calc if each non-deterministic RexNode of bottom Calc should appear at most once in the project list of top Project.

Nested Class Summary

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

org.apache.calcite.rel.rules.ProjectCalcMergeRule.Config

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

org.apache.calcite.plan.RelRule.Done, org.apache.calcite.plan.RelRule.MatchHandler<R extends org.apache.calcite.plan.RelOptRule>, org.apache.calcite.plan.RelRule.OperandBuilder, org.apache.calcite.plan.RelRule.OperandDetailBuilder<R extends org.apache.calcite.rel.RelNode>, org.apache.calcite.plan.RelRule.OperandTransform

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

org.apache.calcite.plan.RelOptRule.ConverterRelOptRuleOperand

Field Summary

Fields

Modifier and Type	Field	Description
static final org.apache.calcite.plan.RelOptRule	INSTANCE

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	FlinkProjectCalcMergeRule(org.apache.calcite.rel.rules.ProjectCalcMergeRule.Config config)

Method Summary

Modifier and Type	Method	Description
boolean	matches(org.apache.calcite.plan.RelOptRuleCall call)

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

onMatch

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

any, convert, convert, convertList, convertOperand, convertOperand, equals, equals, getOperand, getOperands, getOutConvention, getOutTrait, hashCode, 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 Details

INSTANCE

public static final org.apache.calcite.plan.RelOptRule INSTANCE

Constructor Details

FlinkProjectCalcMergeRule

protected FlinkProjectCalcMergeRule(org.apache.calcite.rel.rules.ProjectCalcMergeRule.Config config)

Method Details

matches

public boolean matches(org.apache.calcite.plan.RelOptRuleCall call)

Overrides:

matches in class org.apache.calcite.plan.RelOptRule