Package org.apache.calcite.rel.metadata

Class RelMdLowerBoundCost

java.lang.Object

org.apache.calcite.rel.metadata.RelMdLowerBoundCost

All Implemented Interfaces:

MetadataHandler<BuiltInMetadata.LowerBoundCost>

public class RelMdLowerBoundCost
extends Object
implements MetadataHandler<BuiltInMetadata.LowerBoundCost>

Default implementations of the BuiltInMetadata.LowerBoundCost metadata provider for the standard algebra.

Field Summary

Fields

Modifier and Type	Field	Description
static final RelMetadataProvider	SOURCE

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	RelMdLowerBoundCost()

Method Summary

Modifier and Type	Method	Description
MetadataDef<BuiltInMetadata.LowerBoundCost>	getDef()
@Nullable RelOptCost	getLowerBoundCost(RelSubset subset, RelMetadataQuery mq, VolcanoPlanner planner)
@Nullable RelOptCost	getLowerBoundCost(RelNode node, RelMetadataQuery mq, VolcanoPlanner planner)

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

Constructor Details

RelMdLowerBoundCost

protected RelMdLowerBoundCost()

Method Details

getDef

public MetadataDef<BuiltInMetadata.LowerBoundCost> getDef()

Specified by:

getDef in interface MetadataHandler<BuiltInMetadata.LowerBoundCost>

getLowerBoundCost

public @Nullable RelOptCost getLowerBoundCost(RelSubset subset,
 RelMetadataQuery mq,
 VolcanoPlanner planner)

getLowerBoundCost

public @Nullable RelOptCost getLowerBoundCost(RelNode node,
 RelMetadataQuery mq,
 VolcanoPlanner planner)