io.lettuce.core.api.async

Interface RedisStringAsyncCommands<K,V>

Type Parameters:

K - Key type.

V - Value type.

All Known Subinterfaces:

RedisAdvancedClusterAsyncCommands<K,V>, RedisAsyncCommands<K,V>, RedisClusterAsyncCommands<K,V>, RedisClusterPubSubAsyncCommands<K,V>, RedisPubSubAsyncCommands<K,V>

All Known Implementing Classes:

AbstractRedisAsyncCommands, RedisAdvancedClusterAsyncCommandsImpl, RedisAsyncCommandsImpl, RedisClusterPubSubAsyncCommandsImpl, RedisPubSubAsyncCommandsImpl

public interface RedisStringAsyncCommands<K,V>

Asynchronous executed commands for Strings.

Since:

4.0

Author:

Mark Paluch

Generated class:

by io.lettuce.apigenerator.CreateAsyncApi

Method Summary

Modifier and Type	Method and Description
RedisFuture<Long>	append(K key, V value) Append a value to a key.
RedisFuture<Long>	bitcount(K key) Count set bits in a string.
RedisFuture<Long>	bitcount(K key, long start, long end) Count set bits in a string.
RedisFuture<List<Long>>	bitfield(K key, BitFieldArgs bitFieldArgs) Execute BITFIELD with its subcommands.
RedisFuture<Long>	bitopAnd(K destination, K... keys) Perform bitwise AND between strings.
RedisFuture<Long>	bitopNot(K destination, K source) Perform bitwise NOT between strings.
RedisFuture<Long>	bitopOr(K destination, K... keys) Perform bitwise OR between strings.
RedisFuture<Long>	bitopXor(K destination, K... keys) Perform bitwise XOR between strings.
RedisFuture<Long>	bitpos(K key, boolean state) Find first bit set or clear in a string.
RedisFuture<Long>	bitpos(K key, boolean state, long start) Find first bit set or clear in a string.
RedisFuture<Long>	bitpos(K key, boolean state, long start, long end) Find first bit set or clear in a string.
RedisFuture<Long>	decr(K key) Decrement the integer value of a key by one.
RedisFuture<Long>	decrby(K key, long amount) Decrement the integer value of a key by the given number.
RedisFuture<V>	get(K key) Get the value of a key.
RedisFuture<Long>	getbit(K key, long offset) Returns the bit value at offset in the string value stored at key.
RedisFuture<V>	getrange(K key, long start, long end) Get a substring of the string stored at a key.
RedisFuture<V>	getset(K key, V value) Set the string value of a key and return its old value.
RedisFuture<Long>	incr(K key) Increment the integer value of a key by one.
RedisFuture<Long>	incrby(K key, long amount) Increment the integer value of a key by the given amount.
RedisFuture<Double>	incrbyfloat(K key, double amount) Increment the float value of a key by the given amount.
RedisFuture<List<KeyValue<K,V>>>	mget(K... keys) Get the values of all the given keys.
RedisFuture<Long>	mget(KeyValueStreamingChannel<K,V> channel, K... keys) Stream over the values of all the given keys.
RedisFuture<String>	mset(Map<K,V> map) Set multiple keys to multiple values.
RedisFuture<Boolean>	msetnx(Map<K,V> map) Set multiple keys to multiple values, only if none of the keys exist.
RedisFuture<String>	psetex(K key, long milliseconds, V value) Set the value and expiration in milliseconds of a key.
RedisFuture<String>	set(K key, V value) Set the string value of a key.
RedisFuture<String>	set(K key, V value, SetArgs setArgs) Set the string value of a key.
RedisFuture<Long>	setbit(K key, long offset, int value) Sets or clears the bit at offset in the string value stored at key.
RedisFuture<String>	setex(K key, long seconds, V value) Set the value and expiration of a key.
RedisFuture<Boolean>	setnx(K key, V value) Set the value of a key, only if the key does not exist.
RedisFuture<Long>	setrange(K key, long offset, V value) Overwrite part of a string at key starting at the specified offset.
RedisFuture<StringMatchResult>	stralgoLcs(StrAlgoArgs strAlgoArgs) The STRALGO command implements complex algorithms that operate on strings.
RedisFuture<Long>	strlen(K key) Get the length of the value stored in a key.

Method Detail

append

RedisFuture<Long> append(K key,
                         V value)

Append a value to a key.

Parameters:

key - the key

value - the value

Returns:

Long integer-reply the length of the string after the append operation.

bitcount

RedisFuture<Long> bitcount(K key)

Count set bits in a string.

Parameters:

key - the key

Returns:

Long integer-reply The number of bits set to 1.

bitcount

RedisFuture<Long> bitcount(K key,
                           long start,
                           long end)

Count set bits in a string.

Parameters:

key - the key

start - the start

end - the end

Returns:

Long integer-reply The number of bits set to 1.

bitfield

RedisFuture<List<Long>> bitfield(K key,
                                 BitFieldArgs bitFieldArgs)

Execute BITFIELD with its subcommands.

Parameters:

key - the key

bitFieldArgs - the args containing subcommands, must not be null.

Returns:

Long bulk-reply the results from the bitfield commands.

bitpos

RedisFuture<Long> bitpos(K key,
                         boolean state)

Find first bit set or clear in a string.

Parameters:

key - the key

state - the state

Returns:

Long integer-reply The command returns the position of the first bit set to 1 or 0 according to the request. If we look for set bits (the bit argument is 1) and the string is empty or composed of just zero bytes, -1 is returned. If we look for clear bits (the bit argument is 0) and the string only contains bit set to 1, the function returns the first bit not part of the string on the right. So if the string is tree bytes set to the value 0xff the command BITPOS key 0 will return 24, since up to bit 23 all the bits are 1. Basically the function consider the right of the string as padded with zeros if you look for clear bits and specify no range or the start argument only.

bitpos

RedisFuture<Long> bitpos(K key,
                         boolean state,
                         long start)

Find first bit set or clear in a string.

Parameters:

key - the key

state - the bit type: long

start - the start type: long

Returns:

Long integer-reply The command returns the position of the first bit set to 1 or 0 according to the request. If we look for set bits (the bit argument is 1) and the string is empty or composed of just zero bytes, -1 is returned. If we look for clear bits (the bit argument is 0) and the string only contains bit set to 1, the function returns the first bit not part of the string on the right. So if the string is tree bytes set to the value 0xff the command BITPOS key 0 will return 24, since up to bit 23 all the bits are 1. Basically the function consider the right of the string as padded with zeros if you look for clear bits and specify no range or the start argument only.

Since:

5.0.1

bitpos

RedisFuture<Long> bitpos(K key,
                         boolean state,
                         long start,
                         long end)

Find first bit set or clear in a string.

Parameters:

key - the key

state - the bit type: long

start - the start type: long

end - the end type: long

Returns:

Long integer-reply The command returns the position of the first bit set to 1 or 0 according to the request. If we look for set bits (the bit argument is 1) and the string is empty or composed of just zero bytes, -1 is returned. If we look for clear bits (the bit argument is 0) and the string only contains bit set to 1, the function returns the first bit not part of the string on the right. So if the string is tree bytes set to the value 0xff the command BITPOS key 0 will return 24, since up to bit 23 all the bits are 1. Basically the function consider the right of the string as padded with zeros if you look for clear bits and specify no range or the start argument only. However this behavior changes if you are looking for clear bits and specify a range with both start and end. If no clear bit is found in the specified range, the function returns -1 as the user specified a clear range and there are no 0 bits in that range.

bitopAnd

RedisFuture<Long> bitopAnd(K destination,
                           K... keys)

Perform bitwise AND between strings.

Parameters:

destination - result key of the operation

keys - operation input key names

Returns:

Long integer-reply The size of the string stored in the destination key, that is equal to the size of the longest input string.

bitopNot

RedisFuture<Long> bitopNot(K destination,
                           K source)

Perform bitwise NOT between strings.

Parameters:

destination - result key of the operation

source - operation input key names

Returns:

Long integer-reply The size of the string stored in the destination key, that is equal to the size of the longest input string.

bitopOr

RedisFuture<Long> bitopOr(K destination,
                          K... keys)

Perform bitwise OR between strings.

Parameters:

destination - result key of the operation

keys - operation input key names

Returns:

Long integer-reply The size of the string stored in the destination key, that is equal to the size of the longest input string.

bitopXor

RedisFuture<Long> bitopXor(K destination,
                           K... keys)

Perform bitwise XOR between strings.

Parameters:

destination - result key of the operation

keys - operation input key names

Returns:

Long integer-reply The size of the string stored in the destination key, that is equal to the size of the longest input string.

decr

RedisFuture<Long> decr(K key)

Decrement the integer value of a key by one.

Parameters:

key - the key

Returns:

Long integer-reply the value of key after the decrement

decrby

RedisFuture<Long> decrby(K key,
                         long amount)

Decrement the integer value of a key by the given number.

Parameters:

key - the key

amount - the decrement type: long

Returns:

Long integer-reply the value of key after the decrement

get

RedisFuture<V> get(K key)

Get the value of a key.

Parameters:

key - the key

Returns:

V bulk-string-reply the value of key, or null when key does not exist.

getbit

RedisFuture<Long> getbit(K key,
                         long offset)

Returns the bit value at offset in the string value stored at key.

Parameters:

key - the key

offset - the offset type: long

Returns:

Long integer-reply the bit value stored at offset.

getrange

RedisFuture<V> getrange(K key,
                        long start,
                        long end)

Get a substring of the string stored at a key.

Parameters:

key - the key

start - the start type: long

end - the end type: long

Returns:

V bulk-string-reply

getset

RedisFuture<V> getset(K key,
                      V value)

Set the string value of a key and return its old value.

Parameters:

key - the key

value - the value

Returns:

V bulk-string-reply the old value stored at key, or null when key did not exist.

incr

RedisFuture<Long> incr(K key)

Increment the integer value of a key by one.

Parameters:

key - the key

Returns:

Long integer-reply the value of key after the increment

incrby

RedisFuture<Long> incrby(K key,
                         long amount)

Increment the integer value of a key by the given amount.

Parameters:

key - the key

amount - the increment type: long

Returns:

Long integer-reply the value of key after the increment

incrbyfloat

RedisFuture<Double> incrbyfloat(K key,
                                double amount)

Increment the float value of a key by the given amount.

Parameters:

key - the key

amount - the increment type: double

Returns:

Double bulk-string-reply the value of key after the increment.

mget

RedisFuture<List<KeyValue<K,V>>> mget(K... keys)

Get the values of all the given keys.

Parameters:

keys - the key

Returns:

List<V> array-reply list of values at the specified keys.

mget

RedisFuture<Long> mget(KeyValueStreamingChannel<K,V> channel,
                       K... keys)

Stream over the values of all the given keys.

Parameters:

channel - the channel

keys - the keys

Returns:

Long array-reply list of values at the specified keys.

mset

RedisFuture<String> mset(Map<K,V> map)

Set multiple keys to multiple values.

Parameters:

map - the null

Returns:

String simple-string-reply always OK since MSET can't fail.

msetnx

RedisFuture<Boolean> msetnx(Map<K,V> map)

Set multiple keys to multiple values, only if none of the keys exist.

Parameters:

map - the null

Returns:

Boolean integer-reply specifically: 1 if the all the keys were set. 0 if no key was set (at least one key already existed).

set

RedisFuture<String> set(K key,
                        V value)

Set the string value of a key.

Parameters:

key - the key

value - the value

Returns:

String simple-string-reply OK if SET was executed correctly.

set

RedisFuture<String> set(K key,
                        V value,
                        SetArgs setArgs)

Set the string value of a key.

Parameters:

key - the key

value - the value

setArgs - the setArgs

Returns:

String simple-string-reply OK if SET was executed correctly.

setbit

RedisFuture<Long> setbit(K key,
                         long offset,
                         int value)

Sets or clears the bit at offset in the string value stored at key.

Parameters:

key - the key

offset - the offset type: long

value - the value type: string

Returns:

Long integer-reply the original bit value stored at offset.

setex

RedisFuture<String> setex(K key,
                          long seconds,
                          V value)

Set the value and expiration of a key.

Parameters:

key - the key

seconds - the seconds type: long

value - the value

Returns:

String simple-string-reply

psetex

RedisFuture<String> psetex(K key,
                           long milliseconds,
                           V value)

Set the value and expiration in milliseconds of a key.

Parameters:

key - the key

milliseconds - the milliseconds type: long

value - the value

Returns:

String simple-string-reply

setnx

RedisFuture<Boolean> setnx(K key,
                           V value)

Set the value of a key, only if the key does not exist.

Parameters:

key - the key

value - the value

Returns:

Boolean integer-reply specifically: 1 if the key was set 0 if the key was not set

setrange

RedisFuture<Long> setrange(K key,
                           long offset,
                           V value)

Overwrite part of a string at key starting at the specified offset.

Parameters:

key - the key

offset - the offset type: long

value - the value

Returns:

Long integer-reply the length of the string after it was modified by the command.

stralgoLcs

RedisFuture<StringMatchResult> stralgoLcs(StrAlgoArgs strAlgoArgs)

The STRALGO command implements complex algorithms that operate on strings. This method uses the LCS algorithm (longest common substring).

• Without modifiers the string representing the longest common substring is returned.
• When LEN is given the command returns the length of the longest common substring.
• When IDX is given the command returns an array with the LCS length and all the ranges in both the strings, start and end offset for each string, where there are matches. When WITHMATCHLEN is given each array representing a match will also have the length of the match.

Parameters:

strAlgoArgs - command arguments.

Returns:

StringMatchResult

Since:

6.0

strlen

RedisFuture<Long> strlen(K key)

Get the length of the value stored in a key.

Parameters:

key - the key

Returns:

Long integer-reply the length of the string at key, or 0 when key does not exist.