Package org.apache.calcite.rel.metadata

Class RelMdDistinctRowCount

java.lang.Object

org.apache.calcite.rel.metadata.RelMdDistinctRowCount

All Implemented Interfaces:

MetadataHandler<BuiltInMetadata.DistinctRowCount>

public class RelMdDistinctRowCount
extends Object
implements MetadataHandler<BuiltInMetadata.DistinctRowCount>

RelMdDistinctRowCount supplies a default implementation of RelMetadataQuery.getDistinctRowCount(org.apache.calcite.rel.RelNode, org.apache.calcite.util.ImmutableBitSet, org.apache.calcite.rex.RexNode) for the standard logical algebra.

Field Summary

Fields

Modifier and Type	Field	Description
static final RelMetadataProvider	SOURCE

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	RelMdDistinctRowCount()

Method Summary

Modifier and Type	Method	Description
MetadataDef<BuiltInMetadata.DistinctRowCount>	getDef()
@Nullable Double	getDistinctRowCount(RelSubset rel, RelMetadataQuery mq, ImmutableBitSet groupKey, @Nullable RexNode predicate)
@Nullable Double	getDistinctRowCount(Aggregate rel, RelMetadataQuery mq, ImmutableBitSet groupKey, @Nullable RexNode predicate)
@Nullable Double	getDistinctRowCount(Exchange rel, RelMetadataQuery mq, ImmutableBitSet groupKey, @Nullable RexNode predicate)
@Nullable Double	getDistinctRowCount(Filter rel, RelMetadataQuery mq, ImmutableBitSet groupKey, @Nullable RexNode predicate)
@Nullable Double	getDistinctRowCount(Join rel, RelMetadataQuery mq, ImmutableBitSet groupKey, @Nullable RexNode predicate)
@Nullable Double	getDistinctRowCount(Project rel, RelMetadataQuery mq, ImmutableBitSet groupKey, @Nullable RexNode predicate)
@Nullable Double	getDistinctRowCount(Sort rel, RelMetadataQuery mq, ImmutableBitSet groupKey, @Nullable RexNode predicate)
@Nullable Double	getDistinctRowCount(TableModify rel, RelMetadataQuery mq, ImmutableBitSet groupKey, @Nullable RexNode predicate)
@Nullable Double	getDistinctRowCount(TableScan scan, RelMetadataQuery mq, ImmutableBitSet groupKey, RexNode predicate)
@Nullable Double	getDistinctRowCount(Union rel, RelMetadataQuery mq, ImmutableBitSet groupKey, @Nullable RexNode predicate)
Double	getDistinctRowCount(Values rel, RelMetadataQuery mq, ImmutableBitSet groupKey, @Nullable RexNode predicate)
@Nullable Double	getDistinctRowCount(RelNode rel, RelMetadataQuery mq, ImmutableBitSet groupKey, @Nullable RexNode predicate)	Catch-all implementation for BuiltInMetadata.DistinctRowCount.getDistinctRowCount(ImmutableBitSet, RexNode), 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

RelMdDistinctRowCount

protected RelMdDistinctRowCount()

Method Details

getDef

public MetadataDef<BuiltInMetadata.DistinctRowCount> getDef()

Specified by:

getDef in interface MetadataHandler<BuiltInMetadata.DistinctRowCount>

getDistinctRowCount

public @Nullable Double getDistinctRowCount(RelNode rel,
 RelMetadataQuery mq,
 ImmutableBitSet groupKey,
 @Nullable RexNode predicate)

Catch-all implementation for BuiltInMetadata.DistinctRowCount.getDistinctRowCount(ImmutableBitSet, RexNode), invoked using reflection.

See Also:

• RelMetadataQuery.getDistinctRowCount(RelNode, ImmutableBitSet, RexNode)

getDistinctRowCount

public @Nullable Double getDistinctRowCount(TableScan scan,
 RelMetadataQuery mq,
 ImmutableBitSet groupKey,
 RexNode predicate)

getDistinctRowCount

public @Nullable Double getDistinctRowCount(Union rel,
 RelMetadataQuery mq,
 ImmutableBitSet groupKey,
 @Nullable RexNode predicate)

getDistinctRowCount

public @Nullable Double getDistinctRowCount(Sort rel,
 RelMetadataQuery mq,
 ImmutableBitSet groupKey,
 @Nullable RexNode predicate)

getDistinctRowCount

public @Nullable Double getDistinctRowCount(TableModify rel,
 RelMetadataQuery mq,
 ImmutableBitSet groupKey,
 @Nullable RexNode predicate)

getDistinctRowCount

public @Nullable Double getDistinctRowCount(Exchange rel,
 RelMetadataQuery mq,
 ImmutableBitSet groupKey,
 @Nullable RexNode predicate)

getDistinctRowCount

public @Nullable Double getDistinctRowCount(Filter rel,
 RelMetadataQuery mq,
 ImmutableBitSet groupKey,
 @Nullable RexNode predicate)

getDistinctRowCount

public @Nullable Double getDistinctRowCount(Join rel,
 RelMetadataQuery mq,
 ImmutableBitSet groupKey,
 @Nullable RexNode predicate)

getDistinctRowCount

public @Nullable Double getDistinctRowCount(Aggregate rel,
 RelMetadataQuery mq,
 ImmutableBitSet groupKey,
 @Nullable RexNode predicate)

getDistinctRowCount

public Double getDistinctRowCount(Values rel,
 RelMetadataQuery mq,
 ImmutableBitSet groupKey,
 @Nullable RexNode predicate)

getDistinctRowCount

public @Nullable Double getDistinctRowCount(Project rel,
 RelMetadataQuery mq,
 ImmutableBitSet groupKey,
 @Nullable RexNode predicate)

getDistinctRowCount

public @Nullable Double getDistinctRowCount(RelSubset rel,
 RelMetadataQuery mq,
 ImmutableBitSet groupKey,
 @Nullable RexNode predicate)