Package org.apache.calcite.plan.volcano

Class RuleQueue.RelImportanceComparator

java.lang.Object

org.apache.calcite.plan.volcano.RuleQueue.RelImportanceComparator

All Implemented Interfaces:

java.util.Comparator<RelSubset>

Enclosing class:

RuleQueue

private class RuleQueue.RelImportanceComparator
extends java.lang.Object
implements java.util.Comparator<RelSubset>

Compares RelNode objects according to their cached 'importance'.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	RelImportanceComparator()

Method Summary

Modifier and Type	Method	Description
int	compare(RelSubset rel1, RelSubset rel2)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

RelImportanceComparator

private RelImportanceComparator()

Method Detail

compare

public int compare(RelSubset rel1,
                   RelSubset rel2)

Specified by:

compare in interface java.util.Comparator<RelSubset>