Package org.apache.calcite.rel.metadata

Class RelMdPercentageOriginalRows

java.lang.Object

org.apache.calcite.rel.metadata.RelMdPercentageOriginalRows

public class RelMdPercentageOriginalRows
extends Object

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	Description
static final RelMetadataProvider	SOURCE

Method Summary

Modifier and Type	Method	Description
@Nullable RelOptCost	getCumulativeCost(EnumerableInterpreter rel, RelMetadataQuery mq)
@Nullable RelOptCost	getCumulativeCost(RelNode rel, RelMetadataQuery mq)
@Nullable RelOptCost	getNonCumulativeCost(RelNode rel, RelMetadataQuery mq)
@Nullable Double	getPercentageOriginalRows(Aggregate rel, RelMetadataQuery mq)
@Nullable Double	getPercentageOriginalRows(Join rel, RelMetadataQuery mq)
@Nullable Double	getPercentageOriginalRows(TableScan scan, RelMetadataQuery mq)
Double	getPercentageOriginalRows(Union rel, RelMetadataQuery mq)
@Nullable Double	getPercentageOriginalRows(RelNode rel, RelMetadataQuery mq)

Methods inherited from class java.lang.Object

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

Field Details

SOURCE

public static final RelMetadataProvider SOURCE

Method Details

getPercentageOriginalRows

public @Nullable Double getPercentageOriginalRows(TableScan scan,
 RelMetadataQuery mq)

getPercentageOriginalRows

public @Nullable Double getPercentageOriginalRows(Aggregate rel,
 RelMetadataQuery mq)

getPercentageOriginalRows

public Double getPercentageOriginalRows(Union rel,
 RelMetadataQuery mq)

getPercentageOriginalRows

public @Nullable Double getPercentageOriginalRows(Join rel,
 RelMetadataQuery mq)

getPercentageOriginalRows

public @Nullable Double getPercentageOriginalRows(RelNode rel,
 RelMetadataQuery mq)

getCumulativeCost

public @Nullable RelOptCost getCumulativeCost(RelNode rel,
 RelMetadataQuery mq)

getCumulativeCost

public @Nullable RelOptCost getCumulativeCost(EnumerableInterpreter rel,
 RelMetadataQuery mq)

getNonCumulativeCost

public @Nullable RelOptCost getNonCumulativeCost(RelNode rel,
 RelMetadataQuery mq)