org.apache.calcite.sql2rel

Class DeduplicateCorrelateVariables

java.lang.Object

org.apache.calcite.rel.RelShuttleImpl

org.apache.calcite.rel.RelHomogeneousShuttle

org.apache.calcite.sql2rel.DeduplicateCorrelateVariables

All Implemented Interfaces:

RelShuttle

public class DeduplicateCorrelateVariables
extends RelHomogeneousShuttle

Rewrites relations to ensure the same correlation is referenced by the same correlation variable.

Field Summary

Fields inherited from class org.apache.calcite.rel.RelShuttleImpl

stack

Constructor Summary

Constructors

Constructor and Description
DeduplicateCorrelateVariables(RexBuilder builder, String canonical, Set<String> altNames)

Method Summary

Methods

Modifier and Type	Method and Description
RelNode	visit(RelNode other)

Methods inherited from class org.apache.calcite.rel.RelHomogeneousShuttle

visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit

Methods inherited from class org.apache.calcite.rel.RelShuttleImpl

visitChild, visitChildren

Methods inherited from class java.lang.Object

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

Constructor Detail

DeduplicateCorrelateVariables

public DeduplicateCorrelateVariables(RexBuilder builder,
                             String canonical,
                             Set<String> altNames)

Method Detail

visit

public RelNode visit(RelNode other)

Specified by:

visit in interface RelShuttle

Overrides:

visit in class RelShuttleImpl