org.redisson.api

Interface RBucket<V>

Type Parameters:

V - - the type of object

All Superinterfaces:

RBucketAsync<V>, RExpirable, RExpirableAsync, RObject, RObjectAsync

All Known Subinterfaces:

RBinaryStream

All Known Implementing Classes:

RedissonBinaryStream, RedissonBucket, RedissonTransactionalBucket

public interface RBucket<V>
extends RExpirable, RBucketAsync<V>

Object holder. Max size of object is 512MB

Author:

Nikita Koksharov

Method Summary

Modifier and Type	Method and Description
int	addListener(ObjectListener listener) Adds object event listener
boolean	compareAndSet(V expect, V update) Atomically sets the value to the given updated value only if serialized state of the current value equals to serialized state of the expected value.
V	get() Retrieves element stored in the holder.
V	getAndDelete() Retrieves element in the holder and removes it.
V	getAndSet(V newValue) Retrieves current element in the holder and replaces it with newValue.
V	getAndSet(V value, long timeToLive, TimeUnit timeUnit) Retrieves current element in the holder and replaces it with newValue with defined timeToLive interval.
void	set(V value) Stores element into the holder.
void	set(V value, long timeToLive, TimeUnit timeUnit) Stores element into the holder with defined timeToLive interval.
void	setAndKeepTTL(V value) Set value and keep existing TTL.
boolean	setIfExists(V value) Sets value only if it's already exists.
boolean	setIfExists(V value, long timeToLive, TimeUnit timeUnit) Sets value only if it's already exists.
long	size() Returns size of object in bytes.
boolean	trySet(V value) Tries to set element atomically into empty holder.
boolean	trySet(V value, long timeToLive, TimeUnit timeUnit) Tries to set element atomically into empty holder with defined timeToLive interval.

Methods inherited from interface org.redisson.api.RExpirable

clearExpire, expire, expire, expireAt, expireAt, remainTimeToLive

Methods inherited from interface org.redisson.api.RObject

copy, delete, dump, getCodec, getIdleTime, getName, isExists, migrate, move, removeListener, rename, renamenx, restore, restore, restoreAndReplace, restoreAndReplace, sizeInMemory, touch, unlink

Methods inherited from interface org.redisson.api.RBucketAsync

addListenerAsync, compareAndSetAsync, getAndDeleteAsync, getAndSetAsync, getAndSetAsync, getAsync, setAndKeepTTLAsync, setAsync, setAsync, setIfExistsAsync, setIfExistsAsync, sizeAsync, trySetAsync, trySetAsync

Methods inherited from interface org.redisson.api.RExpirableAsync

clearExpireAsync, expireAsync, expireAsync, expireAtAsync, expireAtAsync, remainTimeToLiveAsync

Methods inherited from interface org.redisson.api.RObjectAsync

copyAsync, deleteAsync, dumpAsync, getIdleTimeAsync, isExistsAsync, migrateAsync, moveAsync, removeListenerAsync, renameAsync, renamenxAsync, restoreAndReplaceAsync, restoreAndReplaceAsync, restoreAsync, restoreAsync, sizeInMemoryAsync, touchAsync, unlinkAsync

Method Detail

size

long size()

Returns size of object in bytes.

Returns:

object size

get

V get()

Retrieves element stored in the holder.

Returns:

element

getAndDelete

V getAndDelete()

Retrieves element in the holder and removes it.

Returns:

element

trySet

boolean trySet(V value)

Tries to set element atomically into empty holder.

Parameters:

value - - value to set

Returns:

true if successful, or false if element was already set

trySet

boolean trySet(V value,
               long timeToLive,
               TimeUnit timeUnit)

Tries to set element atomically into empty holder with defined timeToLive interval.

Parameters:

value - - value to set

timeToLive - - time to live interval

timeUnit - - unit of time to live interval

Returns:

true if successful, or false if element was already set

setIfExists

boolean setIfExists(V value)

Sets value only if it's already exists.

Parameters:

value - - value to set

Returns:

true if successful, or false if element wasn't set

setIfExists

boolean setIfExists(V value,
                    long timeToLive,
                    TimeUnit timeUnit)

Sets value only if it's already exists.

Parameters:

value - - value to set

timeToLive - - time to live interval

timeUnit - - unit of time to live interval

Returns:

true if successful, or false if element wasn't set

compareAndSet

boolean compareAndSet(V expect,
                      V update)

Atomically sets the value to the given updated value only if serialized state of the current value equals to serialized state of the expected value.

Parameters:

expect - the expected value

update - the new value

Returns:

true if successful; or false if the actual value was not equal to the expected value.

getAndSet

V getAndSet(V newValue)

Retrieves current element in the holder and replaces it with newValue.

Parameters:

newValue - - value to set

Returns:

previous value

getAndSet

V getAndSet(V value,
            long timeToLive,
            TimeUnit timeUnit)

Retrieves current element in the holder and replaces it with newValue with defined timeToLive interval.

Parameters:

value - - value to set

timeToLive - - time to live interval

timeUnit - - unit of time to live interval

Returns:

previous value

set

void set(V value)

Stores element into the holder.

Parameters:

value - - value to set

set

void set(V value,
         long timeToLive,
         TimeUnit timeUnit)

Stores element into the holder with defined timeToLive interval.

Parameters:

value - - value to set

timeToLive - - time to live interval

timeUnit - - unit of time to live interval

setAndKeepTTL

void setAndKeepTTL(V value)

Set value and keep existing TTL.

Requires Redis 6.0.0 and higher.

Parameters:

value - - value to set

addListener

int addListener(ObjectListener listener)

Adds object event listener

Specified by:

addListener in interface RObject

Parameters:

listener - - object event listener

Returns:

listener id

See Also:

ExpiredObjectListener, DeletedObjectListener, SetObjectListener