Package org.apache.calcite.rel.metadata

Class RelMdRowCount

java.lang.Object

org.apache.calcite.rel.metadata.RelMdRowCount

All Implemented Interfaces:

MetadataHandler<BuiltInMetadata.RowCount>

public class RelMdRowCount
extends Object
implements MetadataHandler<BuiltInMetadata.RowCount>

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

Field Summary

Fields

Modifier and Type	Field	Description
static final RelMetadataProvider	SOURCE

Constructor Summary

Constructors

Constructor	Description
RelMdRowCount()

Method Summary

Modifier and Type	Method	Description
MetadataDef<BuiltInMetadata.RowCount>	getDef()
@Nullable Double	getRowCount(EnumerableLimit rel, RelMetadataQuery mq)
@Nullable Double	getRowCount(RelSubset subset, RelMetadataQuery mq)
Double	getRowCount(Aggregate rel, RelMetadataQuery mq)
Double	getRowCount(Calc rel, RelMetadataQuery mq)
@Nullable Double	getRowCount(Exchange rel, RelMetadataQuery mq)
Double	getRowCount(Filter rel, RelMetadataQuery mq)
@Nullable Double	getRowCount(Intersect rel, RelMetadataQuery mq)
@Nullable Double	getRowCount(Join rel, RelMetadataQuery mq)
@Nullable Double	getRowCount(Minus rel, RelMetadataQuery mq)
@Nullable Double	getRowCount(Project rel, RelMetadataQuery mq)
@Nullable Double	getRowCount(Sample rel, RelMetadataQuery mq)
@Nullable Double	getRowCount(Sort rel, RelMetadataQuery mq)
@Nullable Double	getRowCount(TableModify rel, RelMetadataQuery mq)
@Nullable Double	getRowCount(TableScan rel, RelMetadataQuery mq)
@Nullable Double	getRowCount(Union rel, RelMetadataQuery mq)
Double	getRowCount(Values rel, RelMetadataQuery mq)
@Nullable Double	getRowCount(RelNode rel, RelMetadataQuery mq)	Catch-all implementation for BuiltInMetadata.RowCount.getRowCount(), invoked using reflection.
@Nullable Double	getRowCount(SingleRel 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

Constructor Details

RelMdRowCount

public RelMdRowCount()

Method Details

getDef

public MetadataDef<BuiltInMetadata.RowCount> getDef()

Specified by:

getDef in interface MetadataHandler<BuiltInMetadata.RowCount>

getRowCount

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

Catch-all implementation for BuiltInMetadata.RowCount.getRowCount(), invoked using reflection.

See Also:

• RelMetadataQuery.getRowCount(RelNode)

getRowCount

public @Nullable Double getRowCount(RelSubset subset,
 RelMetadataQuery mq)

getRowCount

public @Nullable Double getRowCount(Union rel,
 RelMetadataQuery mq)

getRowCount

public @Nullable Double getRowCount(Intersect rel,
 RelMetadataQuery mq)

getRowCount

public @Nullable Double getRowCount(Minus rel,
 RelMetadataQuery mq)

getRowCount

public Double getRowCount(Filter rel,
 RelMetadataQuery mq)

getRowCount

public Double getRowCount(Calc rel,
 RelMetadataQuery mq)

getRowCount

public @Nullable Double getRowCount(Project rel,
 RelMetadataQuery mq)

getRowCount

public @Nullable Double getRowCount(Sort rel,
 RelMetadataQuery mq)

getRowCount

public @Nullable Double getRowCount(EnumerableLimit rel,
 RelMetadataQuery mq)

getRowCount

public @Nullable Double getRowCount(Sample rel,
 RelMetadataQuery mq)

getRowCount

public @Nullable Double getRowCount(SingleRel rel,
 RelMetadataQuery mq)

getRowCount

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

getRowCount

public Double getRowCount(Aggregate rel,
 RelMetadataQuery mq)

getRowCount

public @Nullable Double getRowCount(TableScan rel,
 RelMetadataQuery mq)

getRowCount

public Double getRowCount(Values rel,
 RelMetadataQuery mq)

getRowCount

public @Nullable Double getRowCount(Exchange rel,
 RelMetadataQuery mq)

getRowCount

public @Nullable Double getRowCount(TableModify rel,
 RelMetadataQuery mq)