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

Class FlinkJoinPushExpressionsRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

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

public class FlinkJoinPushExpressionsRule
extends org.apache.calcite.plan.RelOptRule

Planner rule that pushes down expressions in "equal" join condition.

For example, given "emp JOIN dept ON emp.deptno + 1 = dept.deptno", adds a project above "emp" that computes the expression "emp.deptno + 1". The resulting join condition is a simple combination of AND, equals, and input fields, plus the remaining non-equal conditions.

Nested Class Summary

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

org.apache.calcite.plan.RelOptRule.ConverterRelOptRuleOperand

Field Summary

Fields

Modifier and Type	Field and Description
static FlinkJoinPushExpressionsRule	INSTANCE

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

description, operands, relBuilderFactory

Constructor Summary

Constructors

Constructor and Description
FlinkJoinPushExpressionsRule(Class<? extends org.apache.calcite.rel.core.Join> clazz, org.apache.calcite.tools.RelBuilderFactory relBuilderFactory) Creates a JoinPushExpressionsRule.
FlinkJoinPushExpressionsRule(Class<? extends org.apache.calcite.rel.core.Join> clazz, org.apache.calcite.rel.core.RelFactories.ProjectFactory projectFactory) Deprecated.

Method Summary

Modifier and Type	Method and Description
void	onMatch(org.apache.calcite.plan.RelOptRuleCall call)

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

INSTANCE

public static final FlinkJoinPushExpressionsRule INSTANCE

Constructor Detail

FlinkJoinPushExpressionsRule

public FlinkJoinPushExpressionsRule(Class<? extends org.apache.calcite.rel.core.Join> clazz,
                                    org.apache.calcite.tools.RelBuilderFactory relBuilderFactory)

Creates a JoinPushExpressionsRule.

FlinkJoinPushExpressionsRule

@Deprecated
public FlinkJoinPushExpressionsRule(Class<? extends org.apache.calcite.rel.core.Join> clazz,
                                                org.apache.calcite.rel.core.RelFactories.ProjectFactory projectFactory)

Deprecated.

Method Detail

onMatch

public void onMatch(org.apache.calcite.plan.RelOptRuleCall call)

Specified by:

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