org.springframework.data.keyvalue.redis.connection
Interface RedisConnection

All Superinterfaces:

RedisCommands, RedisHashCommands, RedisListCommands, RedisPubSubCommands, RedisServerCommands, RedisSetCommands, RedisStringCommands, RedisTxCommands, RedisZSetCommands

All Known Subinterfaces:

StringRedisConnection

All Known Implementing Classes:

DefaultStringRedisConnection, JedisConnection, JredisConnection

public interface RedisConnection
extends RedisCommands

A connection to a Redis server. Acts as an common abstraction across various Redis client libraries (or drivers). Additionally performs exception translation between the underlying Redis client library and Spring DAO exceptions. The methods follow as much as possible the Redis names and conventions.

Author:

Costin Leau

Nested Class Summary

Nested classes/interfaces inherited from interface org.springframework.data.keyvalue.redis.connection.RedisListCommands

RedisListCommands.Position

Nested classes/interfaces inherited from interface org.springframework.data.keyvalue.redis.connection.RedisZSetCommands

RedisZSetCommands.Aggregate, RedisZSetCommands.Tuple

Method Summary

void	close() Closes (or quits) the connection.
List<Object>	closePipeline() Executes the commands in the pipeline and returns their result.
Object	getNativeConnection() Returns the native connection (the underlying library/driver object).
boolean	isClosed() Indicates whether the underlying connection is closed or not.
boolean	isPipelined() Indicates whether the connection is currently pipelined or not.
boolean	isQueueing() Indicates whether the connection is in "queue"(or "MULTI") mode or not.
void	openPipeline() Activates the pipeline mode for this connection.

Methods inherited from interface org.springframework.data.keyvalue.redis.connection.RedisCommands

del, echo, exists, expire, expireAt, keys, persist, ping, randomKey, rename, renameNX, select, sort, sort, ttl, type

Methods inherited from interface org.springframework.data.keyvalue.redis.connection.RedisTxCommands

discard, exec, multi, unwatch, watch

Methods inherited from interface org.springframework.data.keyvalue.redis.connection.RedisStringCommands

append, decr, decrBy, get, getBit, getRange, getSet, incr, incrBy, mGet, mSet, mSetNX, set, setBit, setEx, setNX, setRange, strLen

Methods inherited from interface org.springframework.data.keyvalue.redis.connection.RedisListCommands

bLPop, bRPop, bRPopLPush, lIndex, lInsert, lLen, lPop, lPush, lPushX, lRange, lRem, lSet, lTrim, rPop, rPopLPush, rPush, rPushX

Methods inherited from interface org.springframework.data.keyvalue.redis.connection.RedisSetCommands

sAdd, sCard, sDiff, sDiffStore, sInter, sInterStore, sIsMember, sMembers, sMove, sPop, sRandMember, sRem, sUnion, sUnionStore

Methods inherited from interface org.springframework.data.keyvalue.redis.connection.RedisZSetCommands

zAdd, zCard, zCount, zIncrBy, zInterStore, zInterStore, zRange, zRangeByScore, zRangeByScore, zRangeByScoreWithScore, zRangeByScoreWithScore, zRangeWithScore, zRank, zRem, zRemRange, zRemRangeByScore, zRevRange, zRevRangeWithScore, zRevRank, zScore, zUnionStore, zUnionStore

Methods inherited from interface org.springframework.data.keyvalue.redis.connection.RedisHashCommands

hDel, hExists, hGet, hGetAll, hIncrBy, hKeys, hLen, hMGet, hMSet, hSet, hSetNX, hVals

Methods inherited from interface org.springframework.data.keyvalue.redis.connection.RedisServerCommands

bgSave, bgWriteAof, dbSize, flushAll, flushDb, getConfig, info, lastSave, resetConfigStats, save, setConfig, shutdown

Methods inherited from interface org.springframework.data.keyvalue.redis.connection.RedisPubSubCommands

getSubscription, isSubscribed, pSubscribe, publish, subscribe

Method Detail

close

void close()
           throws DataAccessException

Closes (or quits) the connection.

Throws:

DataAccessException

isClosed

boolean isClosed()

Indicates whether the underlying connection is closed or not.

Returns:

true if the connection is closed, false otherwise.

getNativeConnection

Object getNativeConnection()

Returns the native connection (the underlying library/driver object).

Returns:

underlying, native object

isQueueing

boolean isQueueing()

Indicates whether the connection is in "queue"(or "MULTI") mode or not. When queueing, all commands are postponed until EXEC or DISCARD commands are issued. Since in queueing no results are returned, the connection will return NULL on all operations that interact with the data.

Returns:

true if the connection is in queue/MULTI mode, false otherwise

isPipelined

boolean isPipelined()

Indicates whether the connection is currently pipelined or not.

Returns:

true if the connection is pipelined, false otherwise

See Also:

openPipeline(), isQueueing()

openPipeline

void openPipeline()

Activates the pipeline mode for this connection. When pipelined, all commands return null (the reply is read at the end through closePipeline(). Calling this method when the connection is already pipelined has no effect. Pipelining is used for issuing commands without requesting the response right away but rather at the end of the batch. While somewhat similar to MULTI, pipelining does not guarantee atomicity - it only tries to improve performance when issuing a lot of commands (such as in batching scenarios).

Note:

Consider doing some performance testing before using this feature since in many cases the performance benefits are minimal yet the impact on usage are not.

See Also:

RedisTxCommands.multi()

closePipeline

List<Object> closePipeline()

Executes the commands in the pipeline and returns their result. If the connection is not pipelined, an empty collection is returned.

Returns:

the result of the executed commands.