| Class | Description | 
|---|---|
| BaseBasicBolt | |
| BaseBatchBolt<T> | |
| BaseComponent | |
| BaseRichBolt | |
| BaseRichSpout | |
| BaseStatefulBolt<T extends State> | |
| BaseStatefulWindowedBolt<T extends State> | |
| BaseTickTupleAwareRichBolt | This class is based on BaseRichBolt, but is aware of tick tuple. | 
| BaseWindowedBolt | |
| BaseWindowedBolt.Count | Holds a count value for count based windows and sliding intervals. | 
| BaseWindowedBolt.Duration | Holds a Time duration for time based windows and sliding intervals. | 
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