public class TotalWordCounter extends Object implements IBasicBolt
| Constructor and Description |
|---|
TotalWordCounter() |
| Modifier and Type | Method and Description |
|---|---|
void |
cleanup() |
void |
declareOutputFields(OutputFieldsDeclarer declarer)
Declare the output schema for all the streams of this topology.
|
void |
execute(Tuple input,
BasicOutputCollector collector)
Process the input tuple and optionally emit new tuples based on the input tuple.
|
Map<String,Object> |
getComponentConfiguration()
Declare configuration specific to this component.
|
void |
prepare(Map<String,Object> topoConf,
TopologyContext context) |
public void prepare(Map<String,Object> topoConf, TopologyContext context)
prepare in interface IBasicBoltpublic void execute(Tuple input, BasicOutputCollector collector)
IBasicBoltProcess the input tuple and optionally emit new tuples based on the input tuple.
All acking is managed for you. Throw a FailedException if you want to fail the tuple.
execute in interface IBasicBoltpublic void cleanup()
cleanup in interface IBasicBoltpublic void declareOutputFields(OutputFieldsDeclarer declarer)
IComponentDeclare the output schema for all the streams of this topology.
declareOutputFields in interface IComponentdeclarer - this is used to declare output stream ids, output fields, and whether or not each output stream is a direct streampublic Map<String,Object> getComponentConfiguration()
IComponentDeclare configuration specific to this component. Only a subset of the “topology.*” configs can be overridden. The component configuration can be further overridden when constructing the topology using TopologyBuilder
getComponentConfiguration in interface IComponentCopyright © 2021 The Apache Software Foundation. All rights reserved.