Package org.apache.calcite.rex

Class RexSlot

java.lang.Object

org.apache.calcite.rex.RexNode

org.apache.calcite.rex.RexVariable

org.apache.calcite.rex.RexSlot

Direct Known Subclasses:

RexInputRef, RexLambdaRef, RexLocalRef

public abstract class RexSlot
extends RexVariable

Abstract base class for RexInputRef, RexLocalRef and RexLambdaRef.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	RexSlot.SelfPopulatingList	Thread-safe list that populates itself if you make a reference beyond the end of the list.

Field Summary

Fields

Modifier and Type	Field	Description
protected final int	index

Fields inherited from class org.apache.calcite.rex.RexVariable

name, type

Fields inherited from class org.apache.calcite.rex.RexNode

digest

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	RexSlot(String name, int index, RelDataType type)	Creates a slot.

Method Summary

Modifier and Type	Method	Description
int	getIndex()

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

getName, getType

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

accept, accept, equals, getKind, hashCode, isA, isA, isAlwaysFalse, isAlwaysTrue, nodeCount, toString

Methods inherited from class java.lang.Object

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

Field Details

index

protected final int index

Constructor Details

RexSlot

protected RexSlot(String name,
 int index,
 RelDataType type)

Creates a slot.

Parameters:

index - Index of the field in the underlying rowtype

type - Type of the column

Method Details

getIndex

public int getIndex()