org.apache.calcite.rel

Class RelNodes

java.lang.Object

org.apache.calcite.rel.RelNodes

public class RelNodes
extends Object

Utilities concerning relational expressions.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	RelNodes.RelNodeComparator Arbitrary stable comparator for RelNodes.

Field Summary

Fields

Modifier and Type	Field and Description
static Comparator<RelNode>	COMPARATOR Comparator that provides an arbitrary but stable ordering to RelNodes.
static com.google.common.collect.Ordering<RelNode>	ORDERING Ordering for RelNodes.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	RelNodes()

Method Summary

Modifier and Type	Method and Description
static int	compareRels(RelNode[] rels0, RelNode[] rels1) Compares arrays of RelNode.

Methods inherited from class java.lang.Object

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

Field Detail

COMPARATOR

public static final Comparator<RelNode> COMPARATOR

Comparator that provides an arbitrary but stable ordering to RelNodes.

ORDERING

public static final com.google.common.collect.Ordering<RelNode> ORDERING

Ordering for RelNodes.

Constructor Detail

RelNodes

private RelNodes()

Method Detail

compareRels

public static int compareRels(RelNode[] rels0,
                              RelNode[] rels1)

Compares arrays of RelNode.