org.apache.calcite.rel.metadata

Class RelMdPercentageOriginalRows

java.lang.Object

org.apache.calcite.rel.metadata.RelMdPercentageOriginalRows

All Implemented Interfaces:

MetadataHandler<BuiltInMetadata.PercentageOriginalRows>

public class RelMdPercentageOriginalRows
extends Object
implements MetadataHandler<BuiltInMetadata.PercentageOriginalRows>

RelMdPercentageOriginalRows supplies a default implementation of RelMetadataQuery.getPercentageOriginalRows(org.apache.calcite.rel.RelNode) for the standard logical algebra.

Field Summary

Fields

Modifier and Type	Field and Description
private static RelMdPercentageOriginalRows	INSTANCE
static RelMetadataProvider	SOURCE

Constructor Summary

Constructors

Modifier	Constructor and Description
private	RelMdPercentageOriginalRows()

Method Summary

Modifier and Type	Method and Description
RelOptCost	getCumulativeCost(EnumerableInterpreter rel, RelMetadataQuery mq)
RelOptCost	getCumulativeCost(RelNode rel, RelMetadataQuery mq)
MetadataDef<BuiltInMetadata.PercentageOriginalRows>	getDef()
RelOptCost	getNonCumulativeCost(RelNode rel, RelMetadataQuery mq)
Double	getPercentageOriginalRows(Aggregate rel, RelMetadataQuery mq)
Double	getPercentageOriginalRows(Join rel, RelMetadataQuery mq)
Double	getPercentageOriginalRows(RelNode rel, RelMetadataQuery mq)
Double	getPercentageOriginalRows(Union rel, RelMetadataQuery mq)
private static Double	quotientForPercentage(Double numerator, Double denominator)

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

private static final RelMdPercentageOriginalRows INSTANCE

SOURCE

public static final RelMetadataProvider SOURCE

Constructor Detail

RelMdPercentageOriginalRows

private RelMdPercentageOriginalRows()

Method Detail

getDef

public MetadataDef<BuiltInMetadata.PercentageOriginalRows> getDef()

Specified by:

getDef in interface MetadataHandler<BuiltInMetadata.PercentageOriginalRows>

getPercentageOriginalRows

public Double getPercentageOriginalRows(Aggregate rel,
                                        RelMetadataQuery mq)

getPercentageOriginalRows

public Double getPercentageOriginalRows(Union rel,
                                        RelMetadataQuery mq)

getPercentageOriginalRows

public Double getPercentageOriginalRows(Join rel,
                                        RelMetadataQuery mq)

getPercentageOriginalRows

public Double getPercentageOriginalRows(RelNode rel,
                                        RelMetadataQuery mq)

getCumulativeCost

public RelOptCost getCumulativeCost(RelNode rel,
                                    RelMetadataQuery mq)

getCumulativeCost

public RelOptCost getCumulativeCost(EnumerableInterpreter rel,
                                    RelMetadataQuery mq)

getNonCumulativeCost

public RelOptCost getNonCumulativeCost(RelNode rel,
                                       RelMetadataQuery mq)

quotientForPercentage

private static Double quotientForPercentage(Double numerator,
                                            Double denominator)