CardinalityAggregation

java.lang.Object
- lumis.portal.bigdata.query.CardinalityAggregation

All Implemented Interfaces:

IAggregation, IFieldAwareAggregation
```
@StableMinor(version="14.0",
             sinceVersion="11.0")
public class CardinalityAggregation
extends Object
implements IFieldAwareAggregation
```
Aggregation that returns in a value bucket the unique value count for a given field. Produces an IValueAggregationResult. Only supported by the following data types:
Since:

11.0.0

Version:

$Revision: 24477 $ $Date: 2021-04-28 11:30:36 -0300 (Wed, 28 Apr 2021) $

Field Summary

Fields
Modifier and Type Field Description

protected String id

Constructor Summary

Constructors
Constructor Description

CardinalityAggregation(String id, DocumentTypeField field)
Creates a new instance.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`DocumentTypeField`	`getField()`	Returns the field this aggregation is bound to.
`String`	`getId()`	Returns the aggregation identifier.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface lumis.portal.bigdata.query.IAggregation
getId

- Field Detail
  - id
```
protected final String id
```
- Constructor Detail
  - CardinalityAggregation
```
public CardinalityAggregation(String id,
                              DocumentTypeField field)
```
    Creates a new instance.
    
    Parameters:
    
    id - the aggregation identifier.
    
    field - the field that aggregation will be performed on.
    
    Since:
    
    11.0.0
- Method Detail
  - getField
```
public DocumentTypeField getField()
```
    Description copied from interface: IFieldAwareAggregation
    
    Returns the field this aggregation is bound to.
    
    Specified by:
    
    getField in interface IFieldAwareAggregation
    
    Returns:
    
    the field this aggregation is bound to.
  - getId
```
public String getId()
```
    Description copied from interface: IAggregation
    
    Returns the aggregation identifier.
    
    Specified by:
    
    getId in interface IAggregation
    
    Returns:
    
    the aggregation identifier.