BaseOperation (Storm 2.7.1 API)

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

All Methods Instance Methods Concrete Methods
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 Detail
  - BaseOperation
```
public BaseOperation()
```
- Method Detail
  - 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