# Package org.apache.storm.trident.state

package org.apache.storm.trident.state

- Related Packages
  Package
  Description
  org.apache.storm.trident
  org.apache.storm.trident.state.map
  org.apache.storm.trident.state.snapshot
- Class
  Description
  BaseQueryFunction<S extends State,T>
  BaseStateUpdater<S extends State>
  CombinerValueUpdater
  ITupleCollection
  JSONNonTransactionalSerializer
  JSONOpaqueSerializer
  JSONTransactionalSerializer
  OpaqueValue<T>
  QueryFunction<S extends State,T>
  ReadOnlyState
  ReducerValueUpdater
  Serializer<T>
  State
  There's 3 different kinds of state:
  StateFactory
  StateSpec
  StateType
  StateUpdater<S extends State>
  TransactionalValue<T>
  ValueUpdater<T>