org.eigenbase.relopt.volcano
Class RuleQueue.RelImportanceComparator

java.lang.Object
  extended by org.eigenbase.relopt.volcano.RuleQueue.RelImportanceComparator
All Implemented Interfaces:
Comparator<RelSubset>
Enclosing class:
RuleQueue

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

Compares RelNode objects according to their cached 'importance'.


Constructor Summary
private RuleQueue.RelImportanceComparator()
           
 
Method Summary
 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
 

Constructor Detail

RuleQueue.RelImportanceComparator

private RuleQueue.RelImportanceComparator()
Method Detail

compare

public int compare(RelSubset rel1,
                   RelSubset rel2)
Specified by:
compare in interface Comparator<RelSubset>