TimestampExtractor (Storm 2.7.1 API)

All Superinterfaces:

Serializable

All Known Implementing Classes:

TupleFieldTimestampExtractor
```
public interface TimestampExtractor
extends Serializable
```
Interface to be implemented for extracting timestamp from a tuple.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`long`	`extractTimestamp(Tuple tuple)`	Return the tuple timestamp indicating the time when the event happened.

- Method Detail
  - extractTimestamp
```
long extractTimestamp(Tuple tuple)
```
    Return the tuple timestamp indicating the time when the event happened.
    
    Parameters:
    
    tuple - the tuple
    
    Returns:
    
    the timestamp