Count (Storm 2.7.1 API)

java.lang.Object
- org.apache.storm.trident.operation.builtin.Count

All Implemented Interfaces:

Serializable, CombinerAggregator<Long>
```
public class Count
extends Object
implements CombinerAggregator<Long>
```
See Also:

Serialized Form

- Constructor Summary
  
  Constructors
  Constructor Description
  
  Count()
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  Long combine(Long val1, Long val2)
  
  Long init(TridentTuple tuple)
  
  Long zero()
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Count
```
public Count()
```
- Method Detail
  - init
```
public Long init(TridentTuple tuple)
```
    Specified by:
    
    init in interface CombinerAggregator<Long>
  - combine
```
public Long combine(Long val1,
                    Long val2)
```
    Specified by:
    
    combine in interface CombinerAggregator<Long>
  - zero
```
public Long zero()
```
    Specified by:
    
    zero in interface CombinerAggregator<Long>