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

Class HivePointLookupOptimizerRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

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

Direct Known Subclasses:

HivePointLookupOptimizerRule.FilterCondition, HivePointLookupOptimizerRule.JoinCondition, HivePointLookupOptimizerRule.ProjectionExpressions

public abstract class HivePointLookupOptimizerRule
extends org.apache.calcite.plan.RelOptRule

This optimization attempts to identify and close expanded INs and BETWEENs Basically:

 (c) IN ( v1, v2, ...) <=> c1=v1 || c1=v2 || ...
 

If c is struct; then c=v1 is a group of anded equations. Similarly

 v1 <= c1 and c1 <= v2
 

is rewritten to

c1 between v1 and v2

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	HivePointLookupOptimizerRule.FilterCondition Rule adapter to apply the transformation to Filter conditions.
static class	HivePointLookupOptimizerRule.JoinCondition Rule adapter to apply the transformation to Join conditions.
static class	HivePointLookupOptimizerRule.ProjectionExpressions Rule adapter to apply the transformation to Projections.
protected static class	HivePointLookupOptimizerRule.RexMergeInClause Merge IN clauses, when possible.
protected static class	HivePointLookupOptimizerRule.RexTransformIntoBetween Transforms inequality candidates into [NOT] BETWEEN calls.
protected static class	HivePointLookupOptimizerRule.RexTransformIntoInClause Transforms OR clauses into IN clauses, when possible.

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
protected static org.slf4j.Logger	LOG
protected int	minNumORClauses

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

description, operands, relBuilderFactory

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	HivePointLookupOptimizerRule(org.apache.calcite.plan.RelOptRuleOperand operand, int minNumORClauses, String description)

Method Summary

Modifier and Type	Method and Description
org.apache.calcite.rex.RexNode	analyzeRexNode(org.apache.calcite.rex.RexBuilder rexBuilder, org.apache.calcite.rex.RexNode condition)

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

any, convert, convert, convertList, convertOperand, convertOperand, equals, equals, getOperand, getOperands, getOutConvention, getOutTrait, hashCode, matches, none, onMatch, 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

minNumORClauses

protected final int minNumORClauses

Constructor Detail

HivePointLookupOptimizerRule

protected HivePointLookupOptimizerRule(org.apache.calcite.plan.RelOptRuleOperand operand,
                                       int minNumORClauses,
                                       String description)

Method Detail

analyzeRexNode

public org.apache.calcite.rex.RexNode analyzeRexNode(org.apache.calcite.rex.RexBuilder rexBuilder,
                                                     org.apache.calcite.rex.RexNode condition)