| Interface | Description |
|---|---|
| ISpout |
ISpout is the core interface for implementing spouts.
|
| ISpoutOutputCollector | |
| ISpoutWaitStrategy |
The strategy a spout needs to use when its waiting.
|
| MultiScheme | |
| Scheme |
| Class | Description |
|---|---|
| CheckpointSpout |
Emits checkpoint tuples which is used to save the state of the
IStatefulComponent across the topology. |
| CheckPointState |
Captures the current state of the transaction in
CheckpointSpout. |
| SpoutOutputCollector |
| Enum | Description |
|---|---|
| CheckPointState.Action | |
| CheckPointState.State |