# Uses of Class
org.apache.storm.trident.operation.BaseAggregator

Packages that use BaseAggregator
Package
Description
org.apache.storm.trident.operation.builtin
org.apache.storm.trident.testing

- ## Uses of BaseAggregator in org.apache.storm.trident.operation.builtin

  Subclasses of BaseAggregator in org.apache.storm.trident.operation.builtin
  Modifier and Type
  Class
  Description
  `class`
  `ComparisonAggregator<T>`
  Abstract `Aggregator` for comparing two values in a stream.
  `static class`
  `FirstN.FirstNAgg`
  `static class`
  `FirstN.FirstNSortedAgg`
  `class`
  `Max`
  This aggregator computes the maximum of aggregated tuples in a stream.
  `class`
  `MaxWithComparator<T>`
  This aggregator computes the maximum of aggregated tuples in a stream.
  `class`
  `Min`
  This aggregator computes the minimum of aggregated tuples in a stream.
  `class`
  `MinWithComparator<T>`
  This aggregator computes the minimum of aggregated tuples in a stream.

- ## Uses of BaseAggregator in org.apache.storm.trident.testing

  Subclasses of BaseAggregator in org.apache.storm.trident.testing
  Modifier and Type
  Class
  Description
  `class`
  `CountAsAggregator`