Package org.apache.storm.windowing

# Interface Event<T>

Type Parameters:
  `T` - the type of the object thats wrapped. E.g Tuple

All Known Implementing Classes:
  `EventImpl`, `WaterMarkEvent`

public interface Event<T>
An event is a wrapper object that gets stored in the window.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `T`
  `get()`
  Returns the wrapped object, E.g.
  `long`
  `getTimestamp()`
  The event timestamp in millis.
  `boolean`
  `isWatermark()`
  If this is a watermark event or not.

- ## Method Details

  - ### getTimestamp

    long getTimestamp()
    The event timestamp in millis. This could be the time when the source generated the tuple or the time when the tuple was received by a bolt.
    Returns:
      the event timestamp in milliseconds.

  - ### get

    T get()
    Returns the wrapped object, E.g. a tuple
    Returns:
      the wrapped object.

  - ### isWatermark

    boolean isWatermark()
    If this is a watermark event or not. Watermark events are used for tracking time while processing event based ts.
    Returns:
      true if this is a watermark event