Class CountAggregator<K, V>

Calculates a number of values in an entry set.

Type parameters

K = any
V = any

Hierarchy

EntryAggregator<K, V, number>
- CountAggregator

Index

Constructors

constructor

Properties

Methods

andThen

Constructors

constructor

new CountAggregator(): CountAggregator

Overrides EntryAggregator.constructor

Constructs a new CountAggregator.

Returns CountAggregator

Properties

Protected @class

@class: string

Server-side EntryAggregator implementation type identifier.

Protected Optional extractor

extractor: ValueExtractor

The extractor.ValueExtractor to apply when aggregating results.

Methods

andThen

andThen(aggregator: EntryAggregator<K, V, number>): EntryAggregator<K, V, number>

Inherited from EntryAggregator.andThen

Returns a CompositeAggregator comprised of this and the provided aggregator.

Parameters
- aggregator: EntryAggregator<K, V, number>
  
  the next aggregator
Returns EntryAggregator<K, V, number>

a CompositeAggregator comprised of this and the provided aggregator