org.springframework.data.redis.connection

Interface RedisHashCommands

All Known Subinterfaces:

RedisCommands, RedisConnection, StringRedisConnection

All Known Implementing Classes:

AbstractRedisConnection, DefaultStringRedisConnection, JedisConnection, JredisConnection, LettuceConnection, SrpConnection

public interface RedisHashCommands

Hash-specific commands supported by Redis.

Author:

Costin Leau, Christoph Strobl

Method Summary

Modifier and Type	Method and Description
Long	hDel(byte[] key, byte[]... fields) Delete given hash fields.
Boolean	hExists(byte[] key, byte[] field) Determine if given hash field exists.
byte[]	hGet(byte[] key, byte[] field) Get value for given field from hash at key.
Map<byte[],byte[]>	hGetAll(byte[] key) Get entire hash stored at key.
Double	hIncrBy(byte[] key, byte[] field, double delta) Increment value of a hash field by the given delta.
Long	hIncrBy(byte[] key, byte[] field, long delta) Increment value of a hash field by the given delta.
Set<byte[]>	hKeys(byte[] key) Get key set (fields) of hash at key.
Long	hLen(byte[] key) Get size of hash at key.
List<byte[]>	hMGet(byte[] key, byte[]... fields) Get values for given fields from hash at key.
void	hMSet(byte[] key, Map<byte[],byte[]> hashes) Set multiple hash fields to multiple values using data provided in hashes
Cursor<Map.Entry<byte[],byte[]>>	hScan(byte[] key, ScanOptions options) Use a Cursor to iterate over entries in hash at key.
Boolean	hSet(byte[] key, byte[] field, byte[] value) Set the value of a hash field.
Boolean	hSetNX(byte[] key, byte[] field, byte[] value) Set the value of a hash field only if field does not exist.
List<byte[]>	hVals(byte[] key) Get entry set (values) of hash at field.

Method Detail

hSet

Boolean hSet(byte[] key,
             byte[] field,
             byte[] value)

Set the value of a hash field.

Parameters:

key -

field -

value -

Returns:

See Also:

http://redis.io/commands/hset

hSetNX

Boolean hSetNX(byte[] key,
               byte[] field,
               byte[] value)

Set the value of a hash field only if field does not exist.

Parameters:

key -

field -

value -

Returns:

See Also:

http://redis.io/commands/hsetnx

hGet

byte[] hGet(byte[] key,
            byte[] field)

Get value for given field from hash at key.

Parameters:

key -

field -

Returns:

See Also:

http://redis.io/commands/hget

hMGet

List<byte[]> hMGet(byte[] key,
                   byte[]... fields)

Get values for given fields from hash at key.

Parameters:

key -

fields -

Returns:

See Also:

http://redis.io/commands/hmget

hMSet

void hMSet(byte[] key,
           Map<byte[],byte[]> hashes)

Set multiple hash fields to multiple values using data provided in hashes

Parameters:

key -

hashes -

See Also:

http://redis.io/commands/hmset

hIncrBy

Long hIncrBy(byte[] key,
             byte[] field,
             long delta)

Increment value of a hash field by the given delta.

Parameters:

key -

field -

delta -

Returns:

See Also:

http://redis.io/commands/hincrby

hIncrBy

Double hIncrBy(byte[] key,
               byte[] field,
               double delta)

Increment value of a hash field by the given delta.

Parameters:

key -

field -

delta -

Returns:

See Also:

http://redis.io/commands/hincrbyfloat

hExists

Boolean hExists(byte[] key,
                byte[] field)

Determine if given hash field exists.

Parameters:

key -

field -

Returns:

See Also:

http://redis.io/commands/hexits

hDel

Long hDel(byte[] key,
          byte[]... fields)

Delete given hash fields.

Parameters:

key -

fields -

Returns:

See Also:

http://redis.io/commands/hdel

hLen

Long hLen(byte[] key)

Get size of hash at key.

Parameters:

key -

Returns:

See Also:

http://redis.io/commands/hlen

hKeys

Set<byte[]> hKeys(byte[] key)

Get key set (fields) of hash at key.

Parameters:

key -

Returns:

See Also:

http://redis.io/commands/h?

hVals

List<byte[]> hVals(byte[] key)

Get entry set (values) of hash at field.

Parameters:

key -

Returns:

See Also:

http://redis.io/commands/hvals

hGetAll

Map<byte[],byte[]> hGetAll(byte[] key)

Get entire hash stored at key.

Parameters:

key -

Returns:

See Also:

http://redis.io/commands/hgetall

hScan

Cursor<Map.Entry<byte[],byte[]>> hScan(byte[] key,
                                       ScanOptions options)

Use a Cursor to iterate over entries in hash at key.

Parameters:

key -

options -

Returns:

Since:

1.4

See Also:

http://redis.io/commands/scan