Package org.apache.calcite.plan

Class ConventionTraitDef.ConversionData

java.lang.Object

org.apache.calcite.plan.ConventionTraitDef.ConversionData

Enclosing class:

ConventionTraitDef

private static final class ConventionTraitDef.ConversionData
extends java.lang.Object

Workspace for converting from one convention to another.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) DirectedGraph<Convention,DefaultEdge>	conversionGraph
(package private) com.google.common.collect.Multimap<Pair<Convention,Convention>,ConverterRule>	mapArcToConverterRule	For a given source/target convention, there may be several possible conversion rules.
private Graphs.FrozenGraph<Convention,DefaultEdge>	pathMap

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ConversionData()

Method Summary

Modifier and Type	Method	Description
private Graphs.FrozenGraph<Convention,DefaultEdge>	getPathMap()
java.util.List<java.util.List<Convention>>	getPaths(Convention fromConvention, Convention toConvention)
java.util.List<Convention>	getShortestPath(Convention fromConvention, Convention toConvention)

Methods inherited from class java.lang.Object

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

Field Detail

conversionGraph

final DirectedGraph<Convention,DefaultEdge> conversionGraph

mapArcToConverterRule

final com.google.common.collect.Multimap<Pair<Convention,Convention>,ConverterRule> mapArcToConverterRule

For a given source/target convention, there may be several possible conversion rules. Maps DefaultEdge to a collection of ConverterRule objects.

pathMap

private Graphs.FrozenGraph<Convention,DefaultEdge> pathMap

Constructor Detail

ConversionData

private ConversionData()

Method Detail

getPaths

public java.util.List<java.util.List<Convention>> getPaths(Convention fromConvention,
                                                           Convention toConvention)

getPathMap

private Graphs.FrozenGraph<Convention,DefaultEdge> getPathMap()

getShortestPath

public java.util.List<Convention> getShortestPath(Convention fromConvention,
                                                  Convention toConvention)