com.hazelcast.core
Interface MapStore<K,V>

All Superinterfaces:

MapLoader<K,V>

public interface MapStore<K,V>
extends MapLoader<K,V>

Hazelcast distributed map implementation is an in-memory data store but it can be backed by any type of data store such as RDBMS, OODBMS, or simply a file based data store.

IMap.put(key, value) normally stores the entry into JVM's memory. If MapStore implementation is provided then Hazelcast can also call the MapStore implementation to store the entry into a user defined storage such as RDBMS or some other external storage system. It is completely up to the user how the key-value will be stored or deleted.

Same goes for IMap.remove(key)

Store implementation can be called synchronously (write-through) or asynchronously (write-behind) depending on the configuration.

Method Summary

void	delete(K key) Deletes the entry with a given key from the store.
void	deleteAll(Collection<K> keys) Deletes multiple entries from the store.
void	store(K key, V value) Stores the key-value pair.
void	storeAll(Map<K,V> map) Stores multiple entries.

Methods inherited from interface com.hazelcast.core.MapLoader

load, loadAll, loadAllKeys

Method Detail

store

void store(K key,
           V value)

Stores the key-value pair.

Parameters:

key - key of the entry to store

value - value of the entry to store

storeAll

void storeAll(Map<K,V> map)

Stores multiple entries. Implementation of this method can optimize the store operation by storing all entries in one database connection for instance.

Parameters:

map - map of entries to store

delete

void delete(K key)

Deletes the entry with a given key from the store.

Parameters:

key - key to delete from the store.

deleteAll

void deleteAll(Collection<K> keys)

Deletes multiple entries from the store.

Parameters:

keys - keys of the entries to delete.