Package org.springframework.data.redis.support.collections

Class DefaultRedisMap<K,V>

java.lang.Object

org.springframework.data.redis.support.collections.DefaultRedisMap<K,V>

All Implemented Interfaces:

ConcurrentMap<K,V>, Map<K,V>, BoundKeyOperations<String>, RedisMap<K,V>, RedisStore

public class DefaultRedisMap<K,V>
extends Object
implements RedisMap<K,V>

Default implementation for RedisMap. Note that the current implementation doesn't provide the same locking semantics across all methods. In highly concurrent environments, race conditions might appear.

Author:

Costin Leau, Christoph Strobl, Christian Bühler

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K extends Object,V extends Object>

Constructor Summary

Constructors

Constructor	Description
DefaultRedisMap(String key, RedisOperations<String,?> operations)	Constructs a new DefaultRedisMap instance.
DefaultRedisMap(BoundHashOperations<String,K,V> boundOps)	Constructs a new DefaultRedisMap instance.

Method Summary

Modifier and Type	Method	Description
void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<K,V>>	entrySet()
boolean	equals(Object o)
Boolean	expire(long timeout, TimeUnit unit)	Sets the key time-to-live/expiration.
Boolean	expireAt(Date date)	Sets the key time-to-live/expiration.
V	get(Object key)
Long	getExpire()	Returns the expiration of this key.
String	getKey()	Returns the key associated with this entity.
RedisOperations<String,?>	getOperations()	Returns the underlying Redis operations used by the backing implementation.
DataType	getType()	Returns the associated Redis type.
int	hashCode()
Double	increment(K key, double delta)	Increment value of the hash key by the given delta.
Long	increment(K key, long delta)	Increment value of the hash key by the given delta.
boolean	isEmpty()
Set<K>	keySet()
Boolean	persist()	Removes the expiration (if any) of the key.
V	put(K key, V value)
void	putAll(Map<? extends K,? extends V> m)
V	putIfAbsent(K key, V value)
Map.Entry<K,V>	randomEntry()	Get a random entry from the hash.
K	randomKey()	Get a random key from the hash.
V	remove(Object key)
boolean	remove(Object key, Object value)
void	rename(String newKey)	Renames the key.
V	replace(K key, V value)
boolean	replace(K key, V oldValue, V newValue)
Cursor<Map.Entry<K,V>>	scan()
int	size()
String	toString()
Collection<V>	values()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.springframework.data.redis.core.BoundKeyOperations

expire, expireAt

Methods inherited from interface java.util.concurrent.ConcurrentMap

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, replaceAll

Constructor Details

DefaultRedisMap

public DefaultRedisMap(String key,
 RedisOperations<String,?> operations)

Constructs a new DefaultRedisMap instance.

Parameters:

key - Redis key of this map.

operations - RedisOperations for this map.

See Also:

• RedisOperations.getHashKeySerializer()
• RedisOperations.getValueSerializer()

DefaultRedisMap

public DefaultRedisMap(BoundHashOperations<String,K,V> boundOps)

Constructs a new DefaultRedisMap instance.

Parameters:

boundOps - BoundHashOperations for this map.

Method Details

increment

public Long increment(K key,
 long delta)

Description copied from interface: RedisMap

Increment value of the hash key by the given delta.

Specified by:

increment in interface RedisMap<K,V>

Parameters:

key - must not be null.

Returns:

null if hash does not exist.

increment

public Double increment(K key,
 double delta)

Description copied from interface: RedisMap

Increment value of the hash key by the given delta.

Specified by:

increment in interface RedisMap<K,V>

Parameters:

key - must not be null.

Returns:

null if hash does not exist.

randomKey

public K randomKey()

Description copied from interface: RedisMap

Get a random key from the hash.

Specified by:

randomKey in interface RedisMap<K,V>

Returns:

null if the hash does not exist.

randomEntry

public Map.Entry<K,V> randomEntry()

Description copied from interface: RedisMap

Get a random entry from the hash.

Specified by:

randomEntry in interface RedisMap<K,V>

Returns:

null if the hash does not exist.

getOperations

public RedisOperations<String,?> getOperations()

Description copied from interface: RedisStore

Returns the underlying Redis operations used by the backing implementation.

Specified by:

getOperations in interface RedisStore

Returns:

operations never null.

clear

public void clear()

Specified by:

clear in interface Map<K,V>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<K,V>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<K,V>

entrySet

public Set<Map.Entry<K,V>> entrySet()

Specified by:

entrySet in interface Map<K,V>

get

@Nullable
public V get(Object key)

Specified by:

get in interface Map<K,V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<K,V>

keySet

public Set<K> keySet()

Specified by:

keySet in interface Map<K,V>

put

public V put(K key,
 V value)

Specified by:

put in interface Map<K,V>

putAll

public void putAll(Map<? extends K,? extends V> m)

Specified by:

putAll in interface Map<K,V>

remove

@Nullable
public V remove(Object key)

Specified by:

remove in interface Map<K,V>

size

public int size()

Specified by:

size in interface Map<K,V>

values

public Collection<V> values()

Specified by:

values in interface Map<K,V>

equals

public boolean equals(@Nullable
 Object o)

Specified by:

equals in interface Map<K,V>

Overrides:

equals in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<K,V>

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object

putIfAbsent

@Nullable
public V putIfAbsent(K key,
 V value)

Specified by:

putIfAbsent in interface ConcurrentMap<K,V>

Specified by:

putIfAbsent in interface Map<K,V>

remove

public boolean remove(Object key,
 Object value)

Specified by:

remove in interface ConcurrentMap<K,V>

Specified by:

remove in interface Map<K,V>

replace

public boolean replace(K key,
 V oldValue,
 V newValue)

Specified by:

replace in interface ConcurrentMap<K,V>

Specified by:

replace in interface Map<K,V>

replace

@Nullable
public V replace(K key,
 V value)

Specified by:

replace in interface ConcurrentMap<K,V>

Specified by:

replace in interface Map<K,V>

expire

public Boolean expire(long timeout,
 TimeUnit unit)

Description copied from interface: BoundKeyOperations

Sets the key time-to-live/expiration.

Specified by:

expire in interface BoundKeyOperations<K>

Parameters:

timeout - expiration value

unit - expiration unit

Returns:

true if expiration was set, false otherwise. null when used in pipeline / transaction.

expireAt

public Boolean expireAt(Date date)

Description copied from interface: BoundKeyOperations

Sets the key time-to-live/expiration.

Specified by:

expireAt in interface BoundKeyOperations<K>

Parameters:

date - expiration date

Returns:

true if expiration was set, false otherwise. null when used in pipeline / transaction.

getExpire

public Long getExpire()

Description copied from interface: BoundKeyOperations

Returns the expiration of this key.

Specified by:

getExpire in interface BoundKeyOperations<K>

Returns:

expiration value (in seconds). null when used in pipeline / transaction.

persist

public Boolean persist()

Description copied from interface: BoundKeyOperations

Removes the expiration (if any) of the key.

Specified by:

persist in interface BoundKeyOperations<K>

Returns:

true if expiration was removed, false otherwise. null when used in pipeline / transaction.

getKey

public String getKey()

Description copied from interface: BoundKeyOperations

Returns the key associated with this entity.

Specified by:

getKey in interface BoundKeyOperations<K>

Returns:

key associated with the implementing entity

rename

public void rename(String newKey)

Description copied from interface: BoundKeyOperations

Renames the key.
Note: The new name for empty collections will be propagated on add of first element.

Specified by:

rename in interface BoundKeyOperations<K>

Parameters:

newKey - new key. Must not be null.

getType

public DataType getType()

Description copied from interface: BoundKeyOperations

Returns the associated Redis type.

Specified by:

getType in interface BoundKeyOperations<K>

Returns:

key type. null when used in pipeline / transaction.

scan

public Cursor<Map.Entry<K,V>> scan()

Specified by:

scan in interface RedisMap<K,V>

Returns: