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

Class HiveFieldTrimmerRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

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

Direct Known Subclasses:

HiveCardinalityPreservingJoinRule

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

Rule that triggers the field trimmer on the root of a plan.

Nested Class Summary

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

org.apache.calcite.plan.RelOptRule.ConverterRelOptRuleOperand

Field Summary

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

description, operands, relBuilderFactory

Constructor Summary

Constructors

Modifier	Constructor and Description
	HiveFieldTrimmerRule(boolean fetchStats)
protected	HiveFieldTrimmerRule(boolean fetchStats, String description)

Method Summary

Modifier and Type	Method and Description
void	onMatch(org.apache.calcite.plan.RelOptRuleCall call)
protected org.apache.calcite.rel.RelNode	trim(org.apache.calcite.plan.RelOptRuleCall call, org.apache.calcite.rel.RelNode node)

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

Constructor Detail

HiveFieldTrimmerRule

public HiveFieldTrimmerRule(boolean fetchStats)

HiveFieldTrimmerRule

protected HiveFieldTrimmerRule(boolean fetchStats,
                               String description)

Method Detail

onMatch

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

Specified by:

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

trim

protected org.apache.calcite.rel.RelNode trim(org.apache.calcite.plan.RelOptRuleCall call,
                                              org.apache.calcite.rel.RelNode node)