Package org.springframework.data.redis.core

Interface ReactiveValueOperations<K,V>

public interface ReactiveValueOperations<K,V>

Reactive Redis operations for simple (or in Redis terminology 'string') values.

Streams of methods returning Mono<K> or Flux<M> are terminated with InvalidDataAccessApiUsageException when RedisElementReader.read(ByteBuffer) returns null for a particular element as Reactive Streams prohibit the usage of null values.

Since:

2.0

Author:

Mark Paluch, Jiahe Cai

Method Summary

Modifier and Type	Method	Description
Mono<Long>	append(K key, String value)	Append a value to key.
Mono<List<Long>>	bitField(K key, BitFieldSubCommands command)	Get / Manipulate specific integer fields of varying bit widths and arbitrary non (necessary) aligned offset stored at a given key.
Mono<Long>	decrement(K key)	Decrements the number stored at key by one.
Mono<Long>	decrement(K key, long delta)	Decrements the number stored at key by delta.
Mono<Boolean>	delete(K key)	Removes the given key.
Mono<V>	get(Object key)	Get the value of key.
Mono<String>	get(K key, long start, long end)	Get a substring of value of key between begin and end.
Mono<V>	getAndDelete(K key)	Return the value at key and delete the key.
Mono<V>	getAndExpire(K key, Duration timeout)	Return the value at key and expire the key by applying timeout.
Mono<V>	getAndPersist(K key)	Return the value at key and persist the key.
Mono<V>	getAndSet(K key, V value)	Set value of key and return its old value.
Mono<Boolean>	getBit(K key, long offset)	« Get the bit value at offset of value at key.
Mono<Long>	increment(K key)	Increments the number stored at key by one.
Mono<Double>	increment(K key, double delta)	Increment the string representing a floating point number stored at key by delta.
Mono<Long>	increment(K key, long delta)	Increments the number stored at key by delta.
Mono<List<V>>	multiGet(Collection<K> keys)	Get multiple keys.
Mono<Boolean>	multiSet(Map<? extends K,? extends V> map)	Set multiple keys to multiple values using key-value pairs provided in tuple.
Mono<Boolean>	multiSetIfAbsent(Map<? extends K,? extends V> map)	Set multiple keys to multiple values using key-value pairs provided in tuple only if the provided key does not exist.
Mono<Boolean>	set(K key, V value)	Set value for key.
Mono<Long>	set(K key, V value, long offset)	Overwrite parts of key starting at the specified offset with given value.
Mono<Boolean>	set(K key, V value, Duration timeout)	Set the value and expiration timeout for key.
Mono<Boolean>	setBit(K key, long offset, boolean value)	Sets the bit at offset in value stored at key.
Mono<V>	setGet(K key, V value, Duration timeout)	Set the value and expiration timeout for key.
Mono<Boolean>	setIfAbsent(K key, V value)	Set key to hold the string value if key is absent.
Mono<Boolean>	setIfAbsent(K key, V value, Duration timeout)	Set key to hold the string value and expiration timeout if key is absent.
Mono<Boolean>	setIfPresent(K key, V value)	Set key to hold the string value if key is present.
Mono<Boolean>	setIfPresent(K key, V value, Duration timeout)	Set key to hold the string value and expiration timeout if key is present.
Mono<Long>	size(K key)	Get the length of the value stored at key.

Method Details

set

Mono<Boolean> set(K key,
 V value)

Set value for key.

Parameters:

key - must not be null.

value -

See Also:

• Redis Documentation: SET

set

Mono<Boolean> set(K key,
 V value,
 Duration timeout)

Set the value and expiration timeout for key.

Parameters:

key - must not be null.

value -

timeout - must not be null.

See Also:

• Redis Documentation: SET

setGet

Mono<V> setGet(K key,
 V value,
 Duration timeout)

Set the value and expiration timeout for key. Return the old string stored at key, or empty if key did not exist. An error is returned and SET aborted if the value stored at key is not a string.

Parameters:

key - must not be null.

value -

timeout - must not be null.

Since:

3.5

See Also:

• Redis Documentation: SETEX

setIfAbsent

Mono<Boolean> setIfAbsent(K key,
 V value)

Set key to hold the string value if key is absent.

Parameters:

key - must not be null.

value -

See Also:

• Redis Documentation: SET

setIfAbsent

Mono<Boolean> setIfAbsent(K key,
 V value,
 Duration timeout)

Set key to hold the string value and expiration timeout if key is absent.

Parameters:

key - must not be null.

value -

timeout - must not be null.

Since:

2.1

See Also:

• Redis Documentation: SET

setIfPresent

Mono<Boolean> setIfPresent(K key,
 V value)

Set key to hold the string value if key is present.

Parameters:

key - must not be null.

value -

See Also:

• Redis Documentation: SET

setIfPresent

Mono<Boolean> setIfPresent(K key,
 V value,
 Duration timeout)

Set key to hold the string value and expiration timeout if key is present.

Parameters:

key - must not be null.

value -

timeout - must not be null.

Since:

2.1

See Also:

• Redis Documentation: SET

multiSet

Mono<Boolean> multiSet(Map<? extends K,? extends V> map)

Set multiple keys to multiple values using key-value pairs provided in tuple.

Parameters:

map - must not be null.

See Also:

• Redis Documentation: MSET

multiSetIfAbsent

Mono<Boolean> multiSetIfAbsent(Map<? extends K,? extends V> map)

Set multiple keys to multiple values using key-value pairs provided in tuple only if the provided key does not exist.

Parameters:

map - must not be null.

See Also:

• Redis Documentation: MSETNX

get

Mono<V> get(Object key)

Get the value of key.

Parameters:

key - must not be null.

See Also:

• Redis Documentation: GET

getAndDelete

Mono<V> getAndDelete(K key)

Return the value at key and delete the key.

Parameters:

key - must not be null.

Since:

2.6

See Also:

• Redis Documentation: GETDEL

getAndExpire

Mono<V> getAndExpire(K key,
 Duration timeout)

Return the value at key and expire the key by applying timeout.

Parameters:

key - must not be null.

timeout - must not be null.

Since:

2.6

See Also:

• Redis Documentation: GETEX

getAndPersist

Mono<V> getAndPersist(K key)

Return the value at key and persist the key. This operation removes any TTL that is associated with key.

Parameters:

key - must not be null.

Since:

2.6

See Also:

• Redis Documentation: GETEX

getAndSet

Mono<V> getAndSet(K key,
 V value)

Set value of key and return its old value.

Parameters:

key - must not be null.

See Also:

• Redis Documentation: GETSET

multiGet

Mono<List<V>> multiGet(Collection<K> keys)

Get multiple keys. Values are in the order of the requested keys. Absent field values are represented using null in the resulting List.

Parameters:

keys - must not be null.

See Also:

• Redis Documentation: MGET

increment

Mono<Long> increment(K key)

Increments the number stored at key by one.

Parameters:

key - must not be null.

Since:

2.1

See Also:

• Redis Documentation: INCR

increment

Mono<Long> increment(K key,
 long delta)

Increments the number stored at key by delta.

Parameters:

key - must not be null.

delta -

Since:

2.1

See Also:

• Redis Documentation: INCRBY

increment

Mono<Double> increment(K key,
 double delta)

Increment the string representing a floating point number stored at key by delta.

Parameters:

key - must not be null.

delta -

Since:

2.1

See Also:

• Redis Documentation: INCRBYFLOAT

decrement

Mono<Long> decrement(K key)

Decrements the number stored at key by one.

Parameters:

key - must not be null.

Since:

2.1

See Also:

• Redis Documentation: DECR

decrement

Mono<Long> decrement(K key,
 long delta)

Decrements the number stored at key by delta.

Parameters:

key - must not be null.

delta -

Since:

2.1

See Also:

• Redis Documentation: DECRBY

append

Mono<Long> append(K key,
 String value)

Append a value to key.

Parameters:

key - must not be null.

value -

See Also:

• Redis Documentation: APPEND

get

Mono<String> get(K key,
 long start,
 long end)

Get a substring of value of key between begin and end.

Parameters:

key - must not be null.

start -

end -

See Also:

• Redis Documentation: GETRANGE

set

Mono<Long> set(K key,
 V value,
 long offset)

Overwrite parts of key starting at the specified offset with given value.

Parameters:

key - must not be null.

value -

offset -

See Also:

• Redis Documentation: SETRANGE

size

Mono<Long> size(K key)

Get the length of the value stored at key.

Parameters:

key - must not be null.

See Also:

• Redis Documentation: STRLEN

setBit

Mono<Boolean> setBit(K key,
 long offset,
 boolean value)

Sets the bit at offset in value stored at key.

Parameters:

key - must not be null.

offset -

value -

See Also:

• Redis Documentation: SETBIT

getBit

Mono<Boolean> getBit(K key,
 long offset)

« Get the bit value at offset of value at key.

Parameters:

key - must not be null.

offset -

See Also:

• Redis Documentation: GETBIT

bitField

Mono<List<Long>> bitField(K key,
 BitFieldSubCommands command)

Get / Manipulate specific integer fields of varying bit widths and arbitrary non (necessary) aligned offset stored at a given key.

Parameters:

key - must not be null.

command - must not be null.

Returns:

Since:

2.1

See Also:

• Redis Documentation: BITFIELD

delete

Mono<Boolean> delete(K key)

Removes the given key.

Parameters:

key - must not be null.

See Also:

• Redis Documentation: DEL