# Uses of Interface
org.apache.storm.trident.state.map.ReadOnlyMapState

Packages that use ReadOnlyMapState
Package
Description
org.apache.storm.starter.trident
org.apache.storm.trident.operation.builtin
org.apache.storm.trident.state.map
org.apache.storm.trident.testing

- ## Uses of ReadOnlyMapState in org.apache.storm.starter.trident

  Classes in org.apache.storm.starter.trident that implement ReadOnlyMapState
  Modifier and Type
  Class
  Description
  `class`
  `DebugMemoryMapState<T>`
  `static class`
  `TridentReach.StaticSingleKeyMapState`

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

  Methods in org.apache.storm.trident.operation.builtin with parameters of type ReadOnlyMapState
  Modifier and Type
  Method
  Description
  `List<Object>`
  MapGet.`batchRetrieve(ReadOnlyMapState map, List<TridentTuple> keys)`

- ## Uses of ReadOnlyMapState in org.apache.storm.trident.state.map

  Subinterfaces of ReadOnlyMapState in org.apache.storm.trident.state.map
  Modifier and Type
  Interface
  Description
  `interface`
  `MapState<T>`
  Classes in org.apache.storm.trident.state.map that implement ReadOnlyMapState
  Modifier and Type
  Class
  Description
  `class`
  `NonTransactionalMap<T>`
  `class`
  `OpaqueMap<T>`
  `class`
  `SnapshottableMap<T>`
  `class`
  `TransactionalMap<T>`

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

  Classes in org.apache.storm.trident.testing that implement ReadOnlyMapState
  Modifier and Type
  Class
  Description
  `class`
  `LRUMemoryMapState<T>`
  `class`
  `MemoryMapState<T>`