ITridentSpout.Emitter (Storm 2.7.1 API)

All Known Subinterfaces:

ICommitterTridentSpout.Emitter

All Known Implementing Classes:

BatchSpoutExecutor.BatchSpoutEmitter, OpaquePartitionedTridentSpoutExecutor.Emitter

Enclosing interface:

ITridentSpout<T>
```
public static interface ITridentSpout.Emitter<X>
```

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`close()`	Release any resources held by this emitter.
`void`	`emitBatch(TransactionAttempt tx, X coordinatorMeta, TridentCollector collector)`	Emit a batch for the specified transaction attempt and metadata for the transaction.
`void`	`success(TransactionAttempt tx)`	This attempt committed successfully, so all state for this commit and before can be safely cleaned up.

- Method Detail
  - emitBatch
```
void emitBatch(TransactionAttempt tx,
               X coordinatorMeta,
               TridentCollector collector)
```
    Emit a batch for the specified transaction attempt and metadata for the transaction. The metadata was created by the Coordinator in the initializeTransaction method. This method must always emit the same batch of tuples across all tasks for the same transaction id.
    
    Parameters:
    
    tx - transaction id
    
    coordinatorMeta - metadata from the coordinator defining this transaction
    
    collector - output tuple collector
  - success
```
void success(TransactionAttempt tx)
```
    This attempt committed successfully, so all state for this commit and before can be safely cleaned up.
    
    Parameters:
    
    tx - attempt object containing transaction id and attempt number
  - close
```
void close()
```
    Release any resources held by this emitter.