Package org.apache.calcite.rel.metadata

Class RelMdMeasure

java.lang.Object

org.apache.calcite.rel.metadata.RelMdMeasure

All Implemented Interfaces:

MetadataHandler<BuiltInMetadata.Measure>

public class RelMdMeasure
extends Object
implements MetadataHandler<BuiltInMetadata.Measure>

Default implementations of the BuiltInMetadata.Measure metadata provider for the standard logical algebra.

See Also:

• RelMetadataQuery.isMeasure(org.apache.calcite.rel.RelNode, int)
• RelMetadataQuery.expand(org.apache.calcite.rel.RelNode, int, org.apache.calcite.rel.metadata.BuiltInMetadata.Measure.Context)

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	RelMdMeasure.Contexts	Helpers for BuiltInMetadata.Measure.Context.
static class	RelMdMeasure.DelegatingContext	Implementation of Context that delegates to another Context.

Field Summary

Fields

Modifier and Type	Field	Description
static final RelMetadataProvider	SOURCE

Constructor Summary

Constructors

Constructor	Description
RelMdMeasure()

Method Summary

Modifier and Type	Method	Description
RexNode	expand(RelSubset subset, RelMetadataQuery mq, int column, BuiltInMetadata.Measure.Context context)	Refines expand for RelSubset; called via reflection.
@Nullable RexNode	expand(Aggregate aggregate, RelMetadataQuery mq, int column, BuiltInMetadata.Measure.Context context)	Refines expand for Aggregate; called via reflection.
RexNode	expand(Filter filter, RelMetadataQuery mq, int column, BuiltInMetadata.Measure.Context context)	Refines expand for Filter; called via reflection.
@Nullable RexNode	expand(Project project, RelMetadataQuery mq, int column, BuiltInMetadata.Measure.Context context)	Refines expand for Project; called via reflection.
RexNode	expand(RelNode rel, RelMetadataQuery mq, int column, BuiltInMetadata.Measure.Context context)	Catch-all implementation for BuiltInMetadata.Measure.expand(int, BuiltInMetadata.Measure.Context), invoked using reflection.
MetadataDef<BuiltInMetadata.Measure>	getDef()
Boolean	isMeasure(RelNode rel, RelMetadataQuery mq, int column)	Catch-all implementation for BuiltInMetadata.Measure.isMeasure(int), invoked using reflection.

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

RelMdMeasure

public RelMdMeasure()

Method Details

getDef

public MetadataDef<BuiltInMetadata.Measure> getDef()

Specified by:

getDef in interface MetadataHandler<BuiltInMetadata.Measure>

isMeasure

public Boolean isMeasure(RelNode rel,
 RelMetadataQuery mq,
 int column)

Catch-all implementation for BuiltInMetadata.Measure.isMeasure(int), invoked using reflection.

See Also:

• RelMetadataQuery.isMeasure(RelNode, int)

expand

public RexNode expand(RelNode rel,
 RelMetadataQuery mq,
 int column,
 BuiltInMetadata.Measure.Context context)

Catch-all implementation for BuiltInMetadata.Measure.expand(int, BuiltInMetadata.Measure.Context), invoked using reflection.

See Also:

• RelMetadataQuery.expand(RelNode, int, BuiltInMetadata.Measure.Context)

expand

public RexNode expand(RelSubset subset,
 RelMetadataQuery mq,
 int column,
 BuiltInMetadata.Measure.Context context)

Refines expand for RelSubset; called via reflection.

expand

public RexNode expand(Filter filter,
 RelMetadataQuery mq,
 int column,
 BuiltInMetadata.Measure.Context context)

Refines expand for Filter; called via reflection.

expand

public @Nullable RexNode expand(Project project,
 RelMetadataQuery mq,
 int column,
 BuiltInMetadata.Measure.Context context)

Refines expand for Project; called via reflection.

expand

public @Nullable RexNode expand(Aggregate aggregate,
 RelMetadataQuery mq,
 int column,
 BuiltInMetadata.Measure.Context context)

Refines expand for Aggregate; called via reflection.