org.apache.calcite.rel.rules

Class AbstractMaterializedViewRule.EquivalenceClasses

java.lang.Object

org.apache.calcite.rel.rules.AbstractMaterializedViewRule.EquivalenceClasses

Enclosing class:

AbstractMaterializedViewRule

private static class AbstractMaterializedViewRule.EquivalenceClasses
extends Object

Class representing an equivalence class, i.e., a set of equivalent columns

Field Summary

Fields

Modifier and Type	Field and Description
private List<Set<RexTableInputRef>>	cacheEquivalenceClasses
private Map<RexTableInputRef,Set<RexTableInputRef>>	cacheEquivalenceClassesMap
private Map<RexTableInputRef,Set<RexTableInputRef>>	nodeToEquivalenceClass

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	EquivalenceClasses()

Method Summary

Modifier and Type	Method and Description
protected void	addEquivalenceClass(RexTableInputRef p1, RexTableInputRef p2)
protected static AbstractMaterializedViewRule.EquivalenceClasses	copy(AbstractMaterializedViewRule.EquivalenceClasses ec)
protected List<Set<RexTableInputRef>>	getEquivalenceClasses()
protected Map<RexTableInputRef,Set<RexTableInputRef>>	getEquivalenceClassesMap()

Methods inherited from class java.lang.Object

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

Field Detail

nodeToEquivalenceClass

private final Map<RexTableInputRef,Set<RexTableInputRef>> nodeToEquivalenceClass

cacheEquivalenceClassesMap

private Map<RexTableInputRef,Set<RexTableInputRef>> cacheEquivalenceClassesMap

cacheEquivalenceClasses

private List<Set<RexTableInputRef>> cacheEquivalenceClasses

Constructor Detail

EquivalenceClasses

protected EquivalenceClasses()

Method Detail

addEquivalenceClass

protected void addEquivalenceClass(RexTableInputRef p1,
                                   RexTableInputRef p2)

getEquivalenceClassesMap

protected Map<RexTableInputRef,Set<RexTableInputRef>> getEquivalenceClassesMap()

getEquivalenceClasses

protected List<Set<RexTableInputRef>> getEquivalenceClasses()

copy

protected static AbstractMaterializedViewRule.EquivalenceClasses copy(AbstractMaterializedViewRule.EquivalenceClasses ec)