Package org.apache.storm.trident.operation.builtin

# Class MapGet

java.lang.Object
org.apache.storm.trident.operation.BaseOperation
org.apache.storm.trident.state.BaseQueryFunction<ReadOnlyMapState,Object>
org.apache.storm.trident.operation.builtin.MapGet

All Implemented Interfaces:
  `Serializable`, `EachOperation`, `Operation`, `QueryFunction<ReadOnlyMapState,Object>`

public class MapGet extends BaseQueryFunction<ReadOnlyMapState,Object>

See Also:
  - Serialized Form

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `MapGet()`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `List<Object>`
  `batchRetrieve(ReadOnlyMapState map, List<TridentTuple> keys)`
  `void`
  `execute(TridentTuple tuple, Object result, TridentCollector collector)`

  ### Methods inherited from class org.apache.storm.trident.operation.BaseOperation

  `cleanup, prepare`

  ### Methods inherited from class java.lang.Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

  ### Methods inherited from interface org.apache.storm.trident.operation.Operation

  `cleanup, prepare`

- ## Constructor Details

  - ### MapGet

    public MapGet()

- ## Method Details

  - ### batchRetrieve

    public List<Object> batchRetrieve(ReadOnlyMapState map, List<TridentTuple> keys)

  - ### execute

    public void execute(TridentTuple tuple, Object result, TridentCollector collector)