Package org.apache.storm.trident.operation

# Class BaseOperation

java.lang.Object
org.apache.storm.trident.operation.BaseOperation

All Implemented Interfaces:
  `Serializable`, `Operation`

Direct Known Subclasses:
  `BaseAggregator`, `BaseFilter`, `BaseFunction`, `BaseQueryFunction`, `BaseStateUpdater`, `ConsumerExecutor`, `FlatMapFunctionExecutor`, `MapFunctionExecutor`

public class BaseOperation extends Object implements Operation
Convenience implementation of the `Operation` interface.

Provides no-op implementations of the `prepare()` and `cleanup()` methods.

See Also:
  - Serialized Form

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `BaseOperation()`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `cleanup()`
  No-op implemnation.
  `void`
  `prepare(Map<String,Object> conf, TridentOperationContext context)`
  No-op implementation.

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

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

- ## Constructor Details

  - ### BaseOperation

    public BaseOperation()

- ## Method Details

  - ### prepare

    public void prepare(Map<String,Object> conf, TridentOperationContext context)
    No-op implementation.
    Specified by:
      `prepare` in interface `Operation`
    Parameters:
      `conf` - the Storm configuration map
      `context` - the operation context which provides information such as the number of partitions in the stream, and the current partition index. It also provides methods for registering operation-specific metrics.
    See Also:
      - `TridentOperationContext`

  - ### cleanup

    public void cleanup()
    No-op implemnation.
    Specified by:
      `cleanup` in interface `Operation`