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

Class CorrelationInfoVisitor

java.lang.Object

org.apache.calcite.rex.RexShuttle

org.apache.hadoop.hive.ql.optimizer.calcite.correlation.CorrelationInfoVisitor

All Implemented Interfaces:

org.apache.calcite.rex.RexVisitor<org.apache.calcite.rex.RexNode>

public class CorrelationInfoVisitor
extends org.apache.calcite.rex.RexShuttle

CorrelationIdVisitor digs out information from a given RexNode about all the RexSubQuery RexNodes in the top layer. It does not go into RexSubQuery nodes within a RexSubQuery node.

Method Summary

Modifier and Type	Method and Description
static List<HiveCorrelationInfo>	getCorrelationInfos(org.apache.calcite.rex.RexNode rexNode)
org.apache.calcite.rex.RexNode	visitCall(org.apache.calcite.rex.RexCall call)
org.apache.calcite.rex.RexNode	visitSubQuery(org.apache.calcite.rex.RexSubQuery subQuery)

Methods inherited from class org.apache.calcite.rex.RexShuttle

apply, apply, mutate, visitArray, visitCorrelVariable, visitDynamicParam, visitFieldAccess, visitFieldCollations, visitInputRef, visitList, visitLiteral, visitLocalRef, visitOver, visitPatternFieldRef, visitRangeRef, visitTableInputRef, visitWindow

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.calcite.rex.RexVisitor

visitEach, visitList, visitList

Method Detail

visitCall

public org.apache.calcite.rex.RexNode visitCall(org.apache.calcite.rex.RexCall call)

Specified by:

visitCall in interface org.apache.calcite.rex.RexVisitor<org.apache.calcite.rex.RexNode>

Overrides:

visitCall in class org.apache.calcite.rex.RexShuttle

visitSubQuery

public org.apache.calcite.rex.RexNode visitSubQuery(org.apache.calcite.rex.RexSubQuery subQuery)

Specified by:

visitSubQuery in interface org.apache.calcite.rex.RexVisitor<org.apache.calcite.rex.RexNode>

Overrides:

visitSubQuery in class org.apache.calcite.rex.RexShuttle

getCorrelationInfos

public static List<HiveCorrelationInfo> getCorrelationInfos(org.apache.calcite.rex.RexNode rexNode)