com.hazelcast.examples

Class DummyStore

java.lang.Object

com.hazelcast.examples.DummyStore

All Implemented Interfaces:

MapLoader, MapStore

public class DummyStore
extends Object
implements MapLoader, MapStore

A dummy store

Constructor Summary

Constructors

Constructor and Description
DummyStore()

Method Summary

Modifier and Type	Method and Description
void	delete(Object key) Deletes the entry with a given key from the store.
void	deleteAll(Collection keys) Deletes multiple entries from the store.
Object	load(Object key) Loads the value of a given key.
Map	loadAll(Collection keys) Loads given keys.
Set	loadAllKeys() Loads all of the keys from the store.
void	store(Object key, Object value) Stores the key-value pair.
void	storeAll(Map map) Stores multiple entries.

Methods inherited from class java.lang.Object

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

Constructor Detail

DummyStore

public DummyStore()

Method Detail

loadAllKeys

public Set loadAllKeys()

Description copied from interface: MapLoader

Loads all of the keys from the store.

Specified by:

loadAllKeys in interface MapLoader

Returns:

all the keys

load

public Object load(Object key)

Description copied from interface: MapLoader

Loads the value of a given key. If distributed map doesn't contain the value for the given key then Hazelcast will call implementation's load (key) method to obtain the value. Implementation can use any means of loading the given key; such as an O/R mapping tool, simple SQL or reading a file etc.

Specified by:

load in interface MapLoader

Returns:

value of the key

loadAll

public Map loadAll(Collection keys)

Description copied from interface: MapLoader

Loads given keys. This is batch load operation so that implementation can optimize the multiple loads.

Specified by:

loadAll in interface MapLoader

Parameters:

keys - keys of the values entries to load

Returns:

map of loaded key-value pairs.

store

public void store(Object key,
                  Object value)

Description copied from interface: MapStore

Stores the key-value pair. If an exception is thrown then the put operation will fail.

Specified by:

store in interface MapStore

Parameters:

key - key of the entry to store

value - value of the entry to store

storeAll

public void storeAll(Map map)

Description copied from interface: MapStore

Stores multiple entries. Implementation of this method can optimize the store operation by storing all entries in one database connection for instance. storeAll used when writeDelaySeconds is positive (write-behind). If an exception is thrown the entries will be tried to be stored one by one using store() method.

Specified by:

storeAll in interface MapStore

Parameters:

map - map of entries to store

delete

public void delete(Object key)

Description copied from interface: MapStore

Deletes the entry with a given key from the store. If an exception is thrown the remove operation will fail.

Specified by:

delete in interface MapStore

Parameters:

key - key to delete from the store.

deleteAll

public void deleteAll(Collection keys)

Description copied from interface: MapStore

Deletes multiple entries from the store. If an exception is thrown the entries will be tried to be deleted one by one using delete() method.

Specified by:

deleteAll in interface MapStore

Parameters:

keys - keys of the entries to delete.