org.apache.storm.redis.trident.state

Class RedisStateUpdater

java.lang.Object

org.apache.storm.trident.operation.BaseOperation

org.apache.storm.trident.state.BaseStateUpdater<T>

org.apache.storm.redis.trident.state.AbstractRedisStateUpdater<RedisState>

org.apache.storm.redis.trident.state.RedisStateUpdater

All Implemented Interfaces:

Serializable, Operation, StateUpdater<RedisState>

public class RedisStateUpdater
extends AbstractRedisStateUpdater<RedisState>

BaseStateUpdater implementation for single Redis environment.

See Also:

AbstractRedisStateUpdater, Serialized Form

Field Summary

Fields inherited from class org.apache.storm.redis.trident.state.AbstractRedisStateUpdater

additionalKey, dataType, expireIntervalSec

Constructor Summary

Constructors

Constructor and Description
RedisStateUpdater(RedisStoreMapper storeMapper) Constructor.

Method Summary

Modifier and Type	Method and Description
protected void	updateStatesToRedis(RedisState redisState, Map<String,String> keyToValue) Updates (key, value) pairs to Redis.
RedisStateUpdater	withExpire(int expireIntervalSec) Sets expire (time to live) if needed.

Methods inherited from class org.apache.storm.redis.trident.state.AbstractRedisStateUpdater

setExpireInterval, updateState

Methods inherited from class org.apache.storm.trident.operation.BaseOperation

cleanup, prepare

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.storm.trident.operation.Operation

cleanup, prepare

Constructor Detail

RedisStateUpdater

public RedisStateUpdater(RedisStoreMapper storeMapper)

Constructor.

Parameters:

storeMapper - mapper for storing

Method Detail

withExpire

public RedisStateUpdater withExpire(int expireIntervalSec)

Sets expire (time to live) if needed.

Parameters:

expireIntervalSec - time to live in seconds

Returns:

RedisStateUpdater itself

updateStatesToRedis

protected void updateStatesToRedis(RedisState redisState,
                                   Map<String,String> keyToValue)

Updates (key, value) pairs to Redis.

Specified by:

updateStatesToRedis in class AbstractRedisStateUpdater<RedisState>

Parameters:

redisState - State for handling query

keyToValue - (key, value) pairs