JsonMeasure (Apache Calcite API)

java.lang.Object
- org.apache.calcite.model.JsonMeasure

```
public class JsonMeasure
extends java.lang.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 Description
  
  java.lang.String agg
  The name of an aggregate function.
  
  java.lang.Object args
  Arguments to the measure.
- Constructor Summary
  
  Constructors
  Constructor Description
  
  JsonMeasure()
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method 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 java.lang.String agg
```
    The name of an aggregate function.
    Required. Usually count, sum, min, max.
  - args
```
public java.lang.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)
```