RedisKeyValueStateProvider (Storm 2.7.1 API)

java.lang.Object
- org.apache.storm.redis.state.RedisKeyValueStateProvider

All Implemented Interfaces:: StateProvider

public class RedisKeyValueStateProvider
extends Object
implements StateProvider

Provides RedisKeyValueState.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class RedisKeyValueStateProvider.StateConfig

Constructor Summary

Constructors
Constructor Description

RedisKeyValueStateProvider()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`State`	`newState(String namespace, Map<String,Object> topoConf, TopologyContext context)`	Returns a new state instance.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - RedisKeyValueStateProvider
```
public RedisKeyValueStateProvider()
```
- Method Detail
  - newState
```
public State newState(String namespace,
                      Map<String,Object> topoConf,
                      TopologyContext context)
```
    Description copied from interface: StateProvider
    
    Returns a new state instance. Each state belongs unique namespace which is typically the componentid-task of the task, so that each task can have its own unique state.
    
    Specified by:
    
    newState in interface StateProvider
    
    Parameters:
    
    namespace - a namespace of the state
    
    topoConf - the storm topology configuration
    
    context - the TopologyContext
    
    Returns:
    
    a previously saved state if one exists otherwise a newly initialized state.