public static class ReachTopology.CountAggregator extends BaseBatchBolt<Object>
Constructor and Description |
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CountAggregator() |
Modifier and Type | Method and Description |
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void |
declareOutputFields(OutputFieldsDeclarer declarer)
Declare the output schema for all the streams of this topology.
|
void |
execute(Tuple tuple) |
void |
finishBatch() |
void |
prepare(Map<String,Object> conf,
TopologyContext context,
BatchOutputCollector collector,
Object id) |
getComponentConfiguration
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
getComponentConfiguration
public void prepare(Map<String,Object> conf, TopologyContext context, BatchOutputCollector collector, Object id)
public void execute(Tuple tuple)
public void finishBatch()
public void declareOutputFields(OutputFieldsDeclarer declarer)
IComponent
Declare the output schema for all the streams of this topology.
declarer
- this is used to declare output stream ids, output fields, and whether or not each output stream is a direct streamCopyright © 2022 The Apache Software Foundation. All rights reserved.