## Uses of Interface
org.apache.storm.windowing.TriggerPolicy

- Packages that use TriggerPolicy
  Package | Description
  --- | ---
  org.apache.storm.trident.windowing.strategy |
  org.apache.storm.windowing |

- - ### Uses of TriggerPolicy in org.apache.storm.trident.windowing.strategy

    Methods in org.apache.storm.trident.windowing.strategy that return TriggerPolicy
    Modifier and Type | Method | Description
    --- | --- | ---
    `TriggerPolicy<T,​?>` | SlidingCountWindowStrategy.`getTriggerPolicy​(TriggerHandler triggerHandler, EvictionPolicy<T,​?> evictionPolicy)` | Returns a `TriggerPolicy` which triggers for every count of given sliding window.
    `TriggerPolicy<T,​?>` | SlidingDurationWindowStrategy.`getTriggerPolicy​(TriggerHandler triggerHandler, EvictionPolicy<T,​?> evictionPolicy)` | Returns a `TriggerPolicy` which triggers for every configured sliding window duration.
    `TriggerPolicy<T,​?>` | TumblingCountWindowStrategy.`getTriggerPolicy​(TriggerHandler triggerHandler, EvictionPolicy<T,​?> evictionPolicy)` | Returns a `TriggerPolicy` which triggers for every count of given sliding window.
    `TriggerPolicy<T,​?>` | TumblingDurationWindowStrategy.`getTriggerPolicy​(TriggerHandler triggerHandler, EvictionPolicy<T,​?> evictionPolicy)` | Returns a `TriggerPolicy` which triggers for every given sliding duration.
    `TriggerPolicy<T,​?>` | WindowStrategy.`getTriggerPolicy​(TriggerHandler triggerHandler, EvictionPolicy<T,​?> evictionPolicy)` | Returns a `TriggerPolicy` by creating with `triggerHandler` and `evictionPolicy` with the given configuration.

  - ### Uses of TriggerPolicy in org.apache.storm.windowing

    Classes in org.apache.storm.windowing that implement TriggerPolicy
    Modifier and Type | Class | Description
    --- | --- | ---
    `class` | `CountTriggerPolicy<T>` | A trigger that tracks event counts and calls back `TriggerHandler.onTrigger()` when the count threshold is hit.
    `class` | `TimeTriggerPolicy<T>` | Invokes `TriggerHandler.onTrigger()` after the duration.
    `class` | `WatermarkCountTriggerPolicy<T>` | A trigger policy that tracks event counts and sets the context for eviction policy to evict based on latest watermark time.
    `class` | `WatermarkTimeTriggerPolicy<T>` | Handles watermark events and triggers `TriggerHandler.onTrigger()` for each window interval that has events to be processed up to the watermark ts.

    Fields in org.apache.storm.windowing declared as TriggerPolicy
    Modifier and Type | Field | Description
    --- | --- | ---
    `protected TriggerPolicy<T,​?>` | WindowManager.`triggerPolicy` |

    Methods in org.apache.storm.windowing with parameters of type TriggerPolicy
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | WindowManager.`setTriggerPolicy​(TriggerPolicy<T,​?> triggerPolicy)` |