CountBolt (Storm 2.7.1 API)

java.lang.Object
- org.apache.storm.topology.base.BaseComponent
- - org.apache.storm.topology.base.BaseBasicBolt
  - - org.apache.storm.perf.bolt.CountBolt

All Implemented Interfaces:

Serializable, IBasicBolt, IComponent
```
public class CountBolt
extends BaseBasicBolt
```
See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field Description

static String FIELDS_COUNT

static String FIELDS_WORD

Constructor Summary

Constructors
Constructor Description

CountBolt()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`declareOutputFields(OutputFieldsDeclarer declarer)`	Declare the output schema for all the streams of this topology.
`void`	`execute(Tuple tuple, BasicOutputCollector collector)`	Process the input tuple and optionally emit new tuples based on the input tuple.
`void`	`prepare(Map<String,Object> topoConf, TopologyContext context)`

Methods inherited from class org.apache.storm.topology.base.BaseBasicBolt
cleanup

Methods inherited from class org.apache.storm.topology.base.BaseComponent
getComponentConfiguration

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.storm.topology.IComponent
getComponentConfiguration

- Field Detail
  - FIELDS_WORD
```
public static final String FIELDS_WORD
```
    See Also:
    
    Constant Field Values
  - FIELDS_COUNT
```
public static final String FIELDS_COUNT
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - CountBolt
```
public CountBolt()
```
- Method Detail
  - prepare
```
public void prepare(Map<String,Object> topoConf,
                    TopologyContext context)
```
    Specified by:
    
    prepare in interface IBasicBolt
    
    Overrides:
    
    prepare in class BaseBasicBolt
  - execute
```
public void execute(Tuple tuple,
                    BasicOutputCollector collector)
```
    Description copied from interface: IBasicBolt
    
    Process 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.
  - declareOutputFields
```
public void declareOutputFields(OutputFieldsDeclarer declarer)
```
    Description copied from interface: IComponent
    
    Declare the output schema for all the streams of this topology.
    
    Parameters:
    
    declarer - this is used to declare output stream ids, output fields, and whether or not each output stream is a direct stream