Package org.apache.calcite.rel.metadata

Class RelMdUniqueKeys

java.lang.Object

org.apache.calcite.rel.metadata.RelMdUniqueKeys

All Implemented Interfaces:

MetadataHandler<BuiltInMetadata.UniqueKeys>

public class RelMdUniqueKeys
extends Object
implements MetadataHandler<BuiltInMetadata.UniqueKeys>

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

Field Summary

Fields

Modifier and Type	Field	Description
static final RelMetadataProvider	SOURCE

Method Summary

Modifier and Type	Method	Description
MetadataDef<BuiltInMetadata.UniqueKeys>	getDef()
Set<ImmutableBitSet>	getUniqueKeys(Aggregate rel, RelMetadataQuery mq, boolean ignoreNulls)
@Nullable Set<ImmutableBitSet>	getUniqueKeys(Calc rel, RelMetadataQuery mq, boolean ignoreNulls)
@Nullable Set<ImmutableBitSet>	getUniqueKeys(Correlate rel, RelMetadataQuery mq, boolean ignoreNulls)
@Nullable Set<ImmutableBitSet>	getUniqueKeys(Filter rel, RelMetadataQuery mq, boolean ignoreNulls)
Set<ImmutableBitSet>	getUniqueKeys(Intersect rel, RelMetadataQuery mq, boolean ignoreNulls)	Any unique key of any input of Intersect is an unique key of the Intersect.
@Nullable Set<ImmutableBitSet>	getUniqueKeys(Join rel, RelMetadataQuery mq, boolean ignoreNulls)
Set<ImmutableBitSet>	getUniqueKeys(Minus rel, RelMetadataQuery mq, boolean ignoreNulls)	The unique keys of Minus are precisely the unique keys of its first input.
Set<ImmutableBitSet>	getUniqueKeys(Project rel, RelMetadataQuery mq, boolean ignoreNulls)
@Nullable Set<ImmutableBitSet>	getUniqueKeys(Sort rel, RelMetadataQuery mq, boolean ignoreNulls)
@Nullable Set<ImmutableBitSet>	getUniqueKeys(TableModify rel, RelMetadataQuery mq, boolean ignoreNulls)
@Nullable Set<ImmutableBitSet>	getUniqueKeys(TableScan rel, RelMetadataQuery mq, boolean ignoreNulls)
Set<ImmutableBitSet>	getUniqueKeys(Union rel, RelMetadataQuery mq, boolean ignoreNulls)
@Nullable Set<ImmutableBitSet>	getUniqueKeys(RelNode rel, RelMetadataQuery mq, boolean ignoreNulls)

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

Method Details

getDef

public MetadataDef<BuiltInMetadata.UniqueKeys> getDef()

Specified by:

getDef in interface MetadataHandler<BuiltInMetadata.UniqueKeys>

getUniqueKeys

public @Nullable Set<ImmutableBitSet> getUniqueKeys(Filter rel,
 RelMetadataQuery mq,
 boolean ignoreNulls)

getUniqueKeys

public @Nullable Set<ImmutableBitSet> getUniqueKeys(Sort rel,
 RelMetadataQuery mq,
 boolean ignoreNulls)

getUniqueKeys

public @Nullable Set<ImmutableBitSet> getUniqueKeys(Correlate rel,
 RelMetadataQuery mq,
 boolean ignoreNulls)

getUniqueKeys

public @Nullable Set<ImmutableBitSet> getUniqueKeys(TableModify rel,
 RelMetadataQuery mq,
 boolean ignoreNulls)

getUniqueKeys

public Set<ImmutableBitSet> getUniqueKeys(Project rel,
 RelMetadataQuery mq,
 boolean ignoreNulls)

getUniqueKeys

public @Nullable Set<ImmutableBitSet> getUniqueKeys(Calc rel,
 RelMetadataQuery mq,
 boolean ignoreNulls)

getUniqueKeys

public @Nullable Set<ImmutableBitSet> getUniqueKeys(Join rel,
 RelMetadataQuery mq,
 boolean ignoreNulls)

getUniqueKeys

public Set<ImmutableBitSet> getUniqueKeys(Aggregate rel,
 RelMetadataQuery mq,
 boolean ignoreNulls)

getUniqueKeys

public Set<ImmutableBitSet> getUniqueKeys(Union rel,
 RelMetadataQuery mq,
 boolean ignoreNulls)

getUniqueKeys

public Set<ImmutableBitSet> getUniqueKeys(Intersect rel,
 RelMetadataQuery mq,
 boolean ignoreNulls)

Any unique key of any input of Intersect is an unique key of the Intersect.

getUniqueKeys

public Set<ImmutableBitSet> getUniqueKeys(Minus rel,
 RelMetadataQuery mq,
 boolean ignoreNulls)

The unique keys of Minus are precisely the unique keys of its first input.

getUniqueKeys

public @Nullable Set<ImmutableBitSet> getUniqueKeys(TableScan rel,
 RelMetadataQuery mq,
 boolean ignoreNulls)

getUniqueKeys

public @Nullable Set<ImmutableBitSet> getUniqueKeys(RelNode rel,
 RelMetadataQuery mq,
 boolean ignoreNulls)