org.apache.calcite.model

Class JsonMeasure

java.lang.Object

org.apache.calcite.model.JsonMeasure

public class JsonMeasure
extends Object

An aggregate function applied to a column (or columns) of a lattice.

Occurs in a JsonTile, and there is a default list in JsonLattice.

See Also:

Description of schema elements

Field Summary

Fields

Modifier and Type	Field and Description
String	agg
Object	args Arguments to the measure.

Constructor Summary

Constructors

Constructor and Description
JsonMeasure()

Method Summary

Methods

Modifier and Type	Method and Description
void	accept(ModelHandler modelHandler)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

agg

public String agg

args

public Object args

Arguments to the measure.

Valid values are:

• Not specified: no arguments
• null: no arguments
• Empty list: no arguments
• String: single argument, the name of a lattice column
• List: multiple arguments, each a column name

Unlike lattice dimensions, measures can not be specified in qualified format, ["table", "column"]. When you define a lattice, make sure that each column you intend to use as a measure has a unique name within the lattice (using "AS alias" if necessary).

Constructor Detail

JsonMeasure

public JsonMeasure()

Method Detail

accept

public void accept(ModelHandler modelHandler)