org.apache.calcite.rel.metadata

Class RelMdMinRowCount

java.lang.Object

org.apache.calcite.rel.metadata.RelMdMinRowCount

All Implemented Interfaces:

MetadataHandler<BuiltInMetadata.MinRowCount>

public class RelMdMinRowCount
extends Object
implements MetadataHandler<BuiltInMetadata.MinRowCount>

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

Field Summary

Fields

Modifier and Type	Field and Description
static RelMetadataProvider	SOURCE

Constructor Summary

Constructors

Constructor and Description
RelMdMinRowCount()

Method Summary

Modifier and Type	Method and Description
MetadataDef<BuiltInMetadata.MinRowCount>	getDef()
Double	getMinRowCount(Aggregate rel, RelMetadataQuery mq)
Double	getMinRowCount(EnumerableLimit rel, RelMetadataQuery mq)
Double	getMinRowCount(Filter rel, RelMetadataQuery mq)
Double	getMinRowCount(Intersect rel, RelMetadataQuery mq)
Double	getMinRowCount(Join rel, RelMetadataQuery mq)
Double	getMinRowCount(Minus rel, RelMetadataQuery mq)
Double	getMinRowCount(Project rel, RelMetadataQuery mq)
Double	getMinRowCount(RelNode rel, RelMetadataQuery mq)
Double	getMinRowCount(RelSubset rel, RelMetadataQuery mq)
Double	getMinRowCount(Sort rel, RelMetadataQuery mq)
Double	getMinRowCount(TableScan rel, RelMetadataQuery mq)
Double	getMinRowCount(Union rel, RelMetadataQuery mq)
Double	getMinRowCount(Values values, 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

RelMdMinRowCount

public RelMdMinRowCount()

Method Detail

getDef

public MetadataDef<BuiltInMetadata.MinRowCount> getDef()

Specified by:

getDef in interface MetadataHandler<BuiltInMetadata.MinRowCount>

getMinRowCount

public Double getMinRowCount(Union rel,
                             RelMetadataQuery mq)

getMinRowCount

public Double getMinRowCount(Intersect rel,
                             RelMetadataQuery mq)

getMinRowCount

public Double getMinRowCount(Minus rel,
                             RelMetadataQuery mq)

getMinRowCount

public Double getMinRowCount(Filter rel,
                             RelMetadataQuery mq)

getMinRowCount

public Double getMinRowCount(Project rel,
                             RelMetadataQuery mq)

getMinRowCount

public Double getMinRowCount(Sort rel,
                             RelMetadataQuery mq)

getMinRowCount

public Double getMinRowCount(EnumerableLimit rel,
                             RelMetadataQuery mq)

getMinRowCount

public Double getMinRowCount(Aggregate rel,
                             RelMetadataQuery mq)

getMinRowCount

public Double getMinRowCount(Join rel,
                             RelMetadataQuery mq)

getMinRowCount

public Double getMinRowCount(TableScan rel,
                             RelMetadataQuery mq)

getMinRowCount

public Double getMinRowCount(Values values,
                             RelMetadataQuery mq)

getMinRowCount

public Double getMinRowCount(RelSubset rel,
                             RelMetadataQuery mq)

getMinRowCount

public Double getMinRowCount(RelNode rel,
                             RelMetadataQuery mq)