Package org.apache.storm.coordination

Class BatchOutputCollector

java.lang.Object

org.apache.storm.coordination.BatchOutputCollector

Direct Known Subclasses:

BatchOutputCollectorImpl

public abstract class BatchOutputCollector
extends Object

Constructor Summary

Constructors

Constructor	Description
BatchOutputCollector()

Method Summary

Modifier and Type	Method	Description
abstract List<Integer>	emit(String streamId, List<Object> tuple)
List<Integer>	emit(List<Object> tuple)	Emits a tuple to the default output stream.
abstract void	emitDirect(int taskId, String streamId, List<Object> tuple)
void	emitDirect(int taskId, List<Object> tuple)	Emits a tuple to the specified task on the default output stream.
abstract void	flush()	Flush any buffered tuples (when batching is enabled).
abstract void	reportError(Throwable error)

Methods inherited from class java.lang.Object

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

Constructor Details

BatchOutputCollector

public BatchOutputCollector()

Method Details

emit

public List<Integer> emit(List<Object> tuple)

Emits a tuple to the default output stream.

emit

public abstract List<Integer> emit(String streamId,
 List<Object> tuple)

emitDirect

public void emitDirect(int taskId,
 List<Object> tuple)

Emits a tuple to the specified task on the default output stream. This output stream must have been declared as a direct stream, and the specified task must use a direct grouping on this stream to receive the message.

emitDirect

public abstract void emitDirect(int taskId,
 String streamId,
 List<Object> tuple)

flush

public abstract void flush()

Flush any buffered tuples (when batching is enabled).

reportError

public abstract void reportError(Throwable error)