org.apache.hadoop.hive.ql.optimizer.calcite.rules

Class HiveJoinSwapConstraintsRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

org.apache.hadoop.hive.ql.optimizer.calcite.rules.HiveJoinSwapConstraintsRule

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

Planner rule that pushes a Join down in a tree past a Join in order to leave non-filtering column appending joins at the top of the plan.

Join(Join(X, Y), Z) → Join(Join(X, Z), Y)

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 HiveJoinSwapConstraintsRule	INSTANCE
protected static org.slf4j.Logger	LOG

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

description, operands, relBuilderFactory

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	HiveJoinSwapConstraintsRule(org.apache.calcite.tools.RelBuilderFactory relBuilder)

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

LOG

protected static final org.slf4j.Logger LOG

INSTANCE

public static final HiveJoinSwapConstraintsRule INSTANCE

Constructor Detail

HiveJoinSwapConstraintsRule

protected HiveJoinSwapConstraintsRule(org.apache.calcite.tools.RelBuilderFactory relBuilder)

Method Detail

onMatch

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

Specified by:

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