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 java.lang.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 RelMetadataProvider	SOURCE

Constructor Summary

Constructors

Constructor	Description
RelMdRowCount()

Method Summary

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

SOURCE

public static final RelMetadataProvider SOURCE

Constructor Detail

RelMdRowCount

public RelMdRowCount()

Method Detail

getDef

public MetadataDef<BuiltInMetadata.RowCount> getDef()

Specified by:

getDef in interface MetadataHandler<BuiltInMetadata.RowCount>

getRowCount

public java.lang.Double getRowCount(RelNode rel,
                                    RelMetadataQuery mq)

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

See Also:

RelMetadataQuery.getRowCount(RelNode)

getRowCount

public java.lang.Double getRowCount(RelSubset subset,
                                    RelMetadataQuery mq)

getRowCount

public java.lang.Double getRowCount(Union rel,
                                    RelMetadataQuery mq)

getRowCount

public java.lang.Double getRowCount(Intersect rel,
                                    RelMetadataQuery mq)

getRowCount

public java.lang.Double getRowCount(Minus rel,
                                    RelMetadataQuery mq)

getRowCount

public java.lang.Double getRowCount(Filter rel,
                                    RelMetadataQuery mq)

getRowCount

public java.lang.Double getRowCount(Calc rel,
                                    RelMetadataQuery mq)

getRowCount

public java.lang.Double getRowCount(Project rel,
                                    RelMetadataQuery mq)

getRowCount

public java.lang.Double getRowCount(Sort rel,
                                    RelMetadataQuery mq)

getRowCount

public java.lang.Double getRowCount(EnumerableLimit rel,
                                    RelMetadataQuery mq)

getRowCount

public java.lang.Double getRowCount(SingleRel rel,
                                    RelMetadataQuery mq)

getRowCount

public java.lang.Double getRowCount(Join rel,
                                    RelMetadataQuery mq)

getRowCount

public java.lang.Double getRowCount(SemiJoin rel,
                                    RelMetadataQuery mq)

getRowCount

public java.lang.Double getRowCount(Aggregate rel,
                                    RelMetadataQuery mq)

getRowCount

public java.lang.Double getRowCount(TableScan rel,
                                    RelMetadataQuery mq)

getRowCount

public java.lang.Double getRowCount(Values rel,
                                    RelMetadataQuery mq)