Package org.apache.calcite.rel

Class RelNodes

java.lang.Object

org.apache.calcite.rel.RelNodes

public class RelNodes
extends Object

Utilities concerning relational expressions.

Field Summary

Fields

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

Method Summary

Modifier and Type	Method	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 Details

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.

Method Details

compareRels

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

Compares arrays of RelNode.