Package org.apache.calcite.materialize

Class Lattice.Measure

java.lang.Object

org.apache.calcite.materialize.Lattice.Measure

All Implemented Interfaces:

Comparable<Lattice.Measure>

Enclosing class:

Lattice

public static class Lattice.Measure
extends Object
implements Comparable<Lattice.Measure>

A measure within a Lattice.

It is immutable.

Examples: SUM(products.weight), COUNT() (means "COUNT(*")), COUNT(DISTINCT customer.id).

Field Summary

Fields

Modifier and Type	Field	Description
final SqlAggFunction	agg
final com.google.common.collect.ImmutableList<Lattice.Column>	args
final String	digest
final boolean	distinct
final @Nullable String	name

Constructor Summary

Constructors

Constructor	Description
Measure(SqlAggFunction agg, boolean distinct, @Nullable String name, Iterable<Lattice.Column> args)

Method Summary

Modifier and Type	Method	Description
ImmutableBitSet	argBitSet()	Returns the set of distinct argument ordinals.
List<Integer>	argOrdinals()	Returns a list of argument ordinals.
int	compareTo(Lattice.Measure measure)
boolean	equals(@Nullable Object obj)
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

agg

public final SqlAggFunction agg

distinct

public final boolean distinct

name

public final @Nullable String name

args

public final com.google.common.collect.ImmutableList<Lattice.Column> args

digest

public final String digest

Constructor Details

Measure

public Measure(SqlAggFunction agg,
 boolean distinct,
 @Nullable String name,
 Iterable<Lattice.Column> args)

Method Details

compareTo

public int compareTo(Lattice.Measure measure)

Specified by:

compareTo in interface Comparable<Lattice.Measure>

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(@Nullable Object obj)

Overrides:

equals in class Object

argBitSet

public ImmutableBitSet argBitSet()

Returns the set of distinct argument ordinals.

argOrdinals

public List<Integer> argOrdinals()

Returns a list of argument ordinals.