org.apache.calcite.sql2rel

Class RelDecorrelator.CorRef

java.lang.Object

org.apache.calcite.sql2rel.RelDecorrelator.CorRef

All Implemented Interfaces:

Comparable<RelDecorrelator.CorRef>

Enclosing class:

RelDecorrelator

static class RelDecorrelator.CorRef
extends Object
implements Comparable<RelDecorrelator.CorRef>

A unique reference to a correlation field.

For instance, if a RelNode references emp.name multiple times, it would result in multiple CorRef objects that differ just in uniqueKey.

Field Summary

Fields

Modifier and Type	Field and Description
CorrelationId	corr
int	field
int	uniqueKey

Constructor Summary

Constructors

Constructor and Description
CorRef(CorrelationId corr, int field, int uniqueKey)

Method Summary

Modifier and Type	Method and Description
int	compareTo(RelDecorrelator.CorRef o)
RelDecorrelator.CorDef	def()
boolean	equals(Object o)
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

uniqueKey

public final int uniqueKey

corr

public final CorrelationId corr

field

public final int field

Constructor Detail

CorRef

CorRef(CorrelationId corr,
       int field,
       int uniqueKey)

Method Detail

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

compareTo

public int compareTo(@Nonnull
                     RelDecorrelator.CorRef o)

Specified by:

compareTo in interface Comparable<RelDecorrelator.CorRef>

def

public RelDecorrelator.CorDef def()