Class DefaultKeyValueStore

java.lang.Object

io.fluxzero.sdk.persisting.keyvalue.DefaultKeyValueStore

All Implemented Interfaces:

KeyValueStore

public class DefaultKeyValueStore
extends Object
implements KeyValueStore

The default implementation of the KeyValueStore interface that provides operations for storing, retrieving, and deleting key-value pairs using a KeyValueClient and a Serializer. This class handles serialization and deserialization of values and ensures that operations conform to the guarantees provided by the client.

Constructor Summary

Constructors

Constructor	Description
DefaultKeyValueStore()

Method Summary

Modifier and Type	Method	Description
void	delete(String key)	Removes the value associated with the given key.
<R> R	get(String key)	Retrieves the value associated with the given key.
void	store(String key, Object value, Guarantee guarantee)	Stores a value under the given key with the specified delivery guarantee.
boolean	storeIfAbsent(String key, Object value)	Stores a value only if there is no existing value for the specified key.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface KeyValueStore

store

Constructor Details

DefaultKeyValueStore

public DefaultKeyValueStore()

Method Details

store

public void store(String key,
 Object value,
 Guarantee guarantee)

Description copied from interface: KeyValueStore

Stores a value under the given key with the specified delivery guarantee.

Specified by:

store in interface KeyValueStore

Parameters:

key - the key to store the value under

value - the value to store

guarantee - the delivery guarantee (e.g., SENT, STORED)

storeIfAbsent

public boolean storeIfAbsent(String key,
 Object value)

Description copied from interface: KeyValueStore

Stores a value only if there is no existing value for the specified key.

Specified by:

storeIfAbsent in interface KeyValueStore

Parameters:

key - the key to store the value under

value - the value to store

Returns:

true if the value was stored, false if the key already had a value

get

public <R> R get(String key)

Description copied from interface: KeyValueStore

Retrieves the value associated with the given key.

Specified by:

get in interface KeyValueStore

Type Parameters:

R - the expected result type

Parameters:

key - the key to retrieve

Returns:

the stored value, or null if not found

delete

public void delete(String key)

Description copied from interface: KeyValueStore

Removes the value associated with the given key.

Specified by:

delete in interface KeyValueStore

Parameters:

key - the key to delete