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 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.

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.

Method Detail

compareRels

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

Compares arrays of RelNode.