com.hazelcast.client.proxy

Class NearCachedClientMapProxy<K,V>

java.lang.Object

com.hazelcast.client.spi.ClientProxy

com.hazelcast.client.proxy.ClientMapProxy<K,V>

com.hazelcast.client.proxy.NearCachedClientMapProxy<K,V>

Type Parameters:

K - the key type for this IMap proxy.

V - the value type for this IMap proxy.

All Implemented Interfaces:

BaseMap<K,V>, DistributedObject, IMap<K,V>, EventJournalReader<EventJournalMapEvent<K,V>>, LegacyAsyncMap<K,V>, ConcurrentMap<K,V>, Map<K,V>

public class NearCachedClientMapProxy<K,V>
extends ClientMapProxy<K,V>

A Client-side IMap implementation which is fronted by a Near Cache.

Nested Class Summary

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

Map.Entry<K,V>

Field Summary

Fields inherited from class com.hazelcast.client.proxy.ClientMapProxy

GET_ASYNC_RESPONSE_DECODER, NULL_AGGREGATOR_IS_NOT_ALLOWED, NULL_KEY_IS_NOT_ALLOWED, NULL_LISTENER_IS_NOT_ALLOWED, NULL_PREDICATE_IS_NOT_ALLOWED, NULL_PROJECTION_IS_NOT_ALLOWED, NULL_VALUE_IS_NOT_ALLOWED

Fields inherited from class com.hazelcast.client.spi.ClientProxy

name

Constructor Summary

Constructors

Constructor and Description
NearCachedClientMapProxy(String serviceName, String name, ClientContext context)

Method Summary

Modifier and Type	Method and Description
String	addNearCacheInvalidationListener(EventHandler handler)
void	clear() Clears the map and deletes the items from the backing map store.
protected boolean	containsKeyInternal(Object key)
protected void	deleteInternal(Object key)
void	evictAll() Evicts all keys from this map except the locked ones.
protected boolean	evictInternal(Object key)
Object	executeOnKeyInternal(Object key, EntryProcessor entryProcessor)
protected void	getAllInternal(Set<K> keys, Map<Integer,List<Data>> partitionToKeyData, List<Object> resultingKeyValuePairs)
ICompletableFuture<V>	getAsync(K key) Asynchronously gets the given key.
protected V	getInternal(Object key)
LocalMapStats	getLocalMapStats() Returns LocalMapStats for this map.
NearCache<Object,Object>	getNearCache()
void	loadAll(boolean replaceExistingValues) Loads all keys into the store.
protected void	loadAllInternal(boolean replaceExistingValues, Collection<?> keysParameter)
protected void	onInitialize() Called when proxy is created.
protected void	onShutdown() Called before client shutdown.
protected void	postDestroy() Called after proxy is destroyed.
protected Map<K,Object>	prepareResult(Collection<Map.Entry<Data,Data>> entrySet)
protected void	putAllInternal(Map<? extends K,? extends V> map, Map<Integer,List<Map.Entry<Data,Data>>> entryMap)
protected ICompletableFuture<V>	putAsyncInternal(long ttl, TimeUnit timeunit, Long maxIdle, TimeUnit maxIdleUnit, Object key, Object value)
protected V	putIfAbsentInternal(long ttl, TimeUnit timeunit, Long maxIdle, TimeUnit maxIdleUnit, Object key, Object value)
protected V	putInternal(long ttl, TimeUnit ttlUnit, Long maxIdle, TimeUnit maxIdleUnit, Object key, Object value)
protected void	putTransientInternal(long ttl, TimeUnit timeunit, Long maxIdle, TimeUnit maxIdleUnit, Object key, Object value)
protected void	removeAllInternal(Predicate predicate)
protected ICompletableFuture<V>	removeAsyncInternal(Object key)
protected com.hazelcast.client.impl.protocol.codec.MapRemoveCodec.ResponseParameters	removeInternal(Object key)
protected boolean	removeInternal(Object key, Object value)
protected boolean	replaceIfSameInternal(Object key, Object oldValue, Object newValue)
protected V	replaceInternal(Object key, Object value)
protected ICompletableFuture<Void>	setAsyncInternal(long ttl, TimeUnit timeunit, Long maxIdle, TimeUnit maxIdleUnit, Object key, Object value)
protected void	setInternal(long ttl, TimeUnit timeunit, Long maxIdle, TimeUnit maxIdleUnit, Object key, Object value)
protected boolean	setTtlInternal(Object key, long ttl, TimeUnit timeUnit)
ICompletableFuture	submitToKeyInternal(Object key, EntryProcessor entryProcessor)
void	submitToKeyInternal(Object key, EntryProcessor entryProcessor, ExecutionCallback callback)
protected boolean	tryPutInternal(long timeout, TimeUnit timeunit, Object key, Object value)
protected boolean	tryRemoveInternal(long timeout, TimeUnit timeunit, Object key)

Methods inherited from class com.hazelcast.client.proxy.ClientMapProxy

addEntryListener, addEntryListener, addEntryListener, addEntryListener, addEntryListener, addEntryListener, addEntryListener, addEntryListener, addIndex, addInterceptor, addLocalEntryListener, addLocalEntryListener, addLocalEntryListener, addLocalEntryListener, addLocalEntryListener, addLocalEntryListener, addPartitionLostListener, aggregate, aggregate, aggregate, aggregate, containsKey, containsValue, delete, entrySet, entrySet, evict, executeOnEntries, executeOnEntries, executeOnKey, executeOnKeys, fillPartitionToKeyData, flush, forceUnlock, get, getAll, getAsyncInternal, getEntryView, getQueryCache, getQueryCache, getQueryCache, getQueryCacheContext, isEmpty, isLocked, iterator, iterator, keySet, keySet, loadAll, localKeySet, localKeySet, lock, lock, onDestroy, project, project, put, put, put, putAll, putAsync, putAsync, putAsync, putIfAbsent, putIfAbsent, putIfAbsent, putTransient, putTransient, readFromEventJournal, remove, remove, removeAll, removeAsync, removeEntryListener, removeInterceptor, removePartitionLostListener, replace, replace, set, set, set, setAsync, setAsync, setAsync, setTtl, size, submitToKey, submitToKey, submitToKeys, subscribeToEventJournal, toString, tryLock, tryLock, tryLock, tryPut, tryRemove, unlock, values, values

Methods inherited from class com.hazelcast.client.spi.ClientProxy

deregisterListener, destroy, destroyLocally, destroyRemotely, equals, getClient, getConnectedServerVersion, getContext, getDistributedObjectName, getId, getName, getPartitionKey, getSerializationService, getServiceName, hashCode, invoke, invoke, invokeOnAddress, invokeOnPartition, invokeOnPartitionInterruptibly, preDestroy, registerListener, setContext, toData, toObject

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.concurrent.ConcurrentMap

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

Methods inherited from interface java.util.Map

equals, hashCode

Methods inherited from interface com.hazelcast.core.DistributedObject

destroy, getName, getPartitionKey, getServiceName

Constructor Detail

NearCachedClientMapProxy

public NearCachedClientMapProxy(String serviceName,
                                String name,
                                ClientContext context)

Method Detail

onInitialize

protected void onInitialize()

Description copied from class: ClientProxy

Called when proxy is created. Overriding implementations can add initialization specific logic into this method like registering a listener, creating a cleanup task etc.

Overrides:

onInitialize in class ClientMapProxy<K,V>

containsKeyInternal

protected boolean containsKeyInternal(Object key)

Overrides:

containsKeyInternal in class ClientMapProxy<K,V>

getInternal

protected V getInternal(Object key)

Overrides:

getInternal in class ClientMapProxy<K,V>

setTtlInternal

protected boolean setTtlInternal(Object key,
                                 long ttl,
                                 TimeUnit timeUnit)

Overrides:

setTtlInternal in class ClientMapProxy<K,V>

getAsync

public ICompletableFuture<V> getAsync(K key)

Description copied from interface: IMap

Asynchronously gets the given key.

   ICompletableFuture future = map.getAsync(key);
   // do some other stuff, when ready get the result.
   Object value = future.get();
 

Future.get() will block until the actual map.get() completes. If the application requires timely response, then Future.get(long, TimeUnit) can be used.

   try {
     ICompletableFuture future = map.getAsync(key);
     Object value = future.get(40, TimeUnit.MILLISECOND);
   } catch (TimeoutException t) {
     // time wasn't enough
   }
 

Additionally, the client can schedule an ExecutionCallback to be invoked upon completion of the ICompletableFuture via ICompletableFuture.andThen(ExecutionCallback) or ICompletableFuture.andThen(ExecutionCallback, Executor):

   // assuming an IMap<String, String>
   ICompletableFuture<String> future = map.getAsync("a");
   future.andThen(new ExecutionCallback<String>() {
     public void onResponse(String response) {
       // do something with value in response
     }

     public void onFailure(Throwable t) {
       // handle failure
     }
   });
 

ExecutionException is never thrown.

Warning:

This method uses hashCode and equals of the binary form of the key, not the actual implementations of hashCode and equals defined in the key's class.

Interactions with the map store

If value with key is not found in memory MapLoader.load(Object) is invoked to load the value from the map store backing the map. Exceptions thrown by load fail the operation and are propagated to the caller.

Specified by:

getAsync in interface IMap<K,V>

Specified by:

getAsync in interface LegacyAsyncMap<K,V>

Overrides:

getAsync in class ClientMapProxy<K,V>

Parameters:

key - the key of the map entry

Returns:

ICompletableFuture from which the value of the key can be retrieved

See Also:

ICompletableFuture

removeInternal

protected com.hazelcast.client.impl.protocol.codec.MapRemoveCodec.ResponseParameters removeInternal(Object key)

Overrides:

removeInternal in class ClientMapProxy<K,V>

removeInternal

protected boolean removeInternal(Object key,
                                 Object value)

Overrides:

removeInternal in class ClientMapProxy<K,V>

removeAllInternal

protected void removeAllInternal(Predicate predicate)

Overrides:

removeAllInternal in class ClientMapProxy<K,V>

deleteInternal

protected void deleteInternal(Object key)

Overrides:

deleteInternal in class ClientMapProxy<K,V>

putAsyncInternal

protected ICompletableFuture<V> putAsyncInternal(long ttl,
                                                 TimeUnit timeunit,
                                                 Long maxIdle,
                                                 TimeUnit maxIdleUnit,
                                                 Object key,
                                                 Object value)

Overrides:

putAsyncInternal in class ClientMapProxy<K,V>

setAsyncInternal

protected ICompletableFuture<Void> setAsyncInternal(long ttl,
                                                    TimeUnit timeunit,
                                                    Long maxIdle,
                                                    TimeUnit maxIdleUnit,
                                                    Object key,
                                                    Object value)

Overrides:

setAsyncInternal in class ClientMapProxy<K,V>

removeAsyncInternal

protected ICompletableFuture<V> removeAsyncInternal(Object key)

Overrides:

removeAsyncInternal in class ClientMapProxy<K,V>

tryRemoveInternal

protected boolean tryRemoveInternal(long timeout,
                                    TimeUnit timeunit,
                                    Object key)

Overrides:

tryRemoveInternal in class ClientMapProxy<K,V>

tryPutInternal

protected boolean tryPutInternal(long timeout,
                                 TimeUnit timeunit,
                                 Object key,
                                 Object value)

Overrides:

tryPutInternal in class ClientMapProxy<K,V>

putInternal

protected V putInternal(long ttl,
                        TimeUnit ttlUnit,
                        Long maxIdle,
                        TimeUnit maxIdleUnit,
                        Object key,
                        Object value)

Overrides:

putInternal in class ClientMapProxy<K,V>

putTransientInternal

protected void putTransientInternal(long ttl,
                                    TimeUnit timeunit,
                                    Long maxIdle,
                                    TimeUnit maxIdleUnit,
                                    Object key,
                                    Object value)

Overrides:

putTransientInternal in class ClientMapProxy<K,V>

putIfAbsentInternal

protected V putIfAbsentInternal(long ttl,
                                TimeUnit timeunit,
                                Long maxIdle,
                                TimeUnit maxIdleUnit,
                                Object key,
                                Object value)

Overrides:

putIfAbsentInternal in class ClientMapProxy<K,V>

replaceIfSameInternal

protected boolean replaceIfSameInternal(Object key,
                                        Object oldValue,
                                        Object newValue)

Overrides:

replaceIfSameInternal in class ClientMapProxy<K,V>

replaceInternal

protected V replaceInternal(Object key,
                            Object value)

Overrides:

replaceInternal in class ClientMapProxy<K,V>

setInternal

protected void setInternal(long ttl,
                           TimeUnit timeunit,
                           Long maxIdle,
                           TimeUnit maxIdleUnit,
                           Object key,
                           Object value)

Overrides:

setInternal in class ClientMapProxy<K,V>

evictInternal

protected boolean evictInternal(Object key)

Overrides:

evictInternal in class ClientMapProxy<K,V>

evictAll

public void evictAll()

Description copied from interface: IMap

Evicts all keys from this map except the locked ones.

If a MapStore is defined for this map, deleteAll is not called by this method. If you do want to MapStore.deleteAll(Collection) to be called use the IMap.clear() method.

The EVICT_ALL event is fired for any registered listeners. See MapEvictedListener.mapEvicted(MapEvent) .

Specified by:

evictAll in interface IMap<K,V>

Overrides:

evictAll in class ClientMapProxy<K,V>

See Also:

IMap.clear()

loadAll

public void loadAll(boolean replaceExistingValues)

Description copied from interface: IMap

Loads all keys into the store. This is a batch load operation so that an implementation can optimize multiple loads.

Interactions with the map store

Calls MapLoader.loadAllKeys() and with the loaded keys calls MapLoader.loadAll(java.util.Collection) on each partition. Exceptions thrown by loadAllKeys() or loadAll() are not propagated to the caller.

Specified by:

loadAll in interface IMap<K,V>

Overrides:

loadAll in class ClientMapProxy<K,V>

Parameters:

replaceExistingValues - when true, existing values in the Map will be replaced by those loaded from the MapLoader IMap.loadAll(boolean)

loadAllInternal

protected void loadAllInternal(boolean replaceExistingValues,
                               Collection<?> keysParameter)

Overrides:

loadAllInternal in class ClientMapProxy<K,V>

getAllInternal

protected void getAllInternal(Set<K> keys,
                              Map<Integer,List<Data>> partitionToKeyData,
                              List<Object> resultingKeyValuePairs)

Overrides:

getAllInternal in class ClientMapProxy<K,V>

getLocalMapStats

public LocalMapStats getLocalMapStats()

Description copied from interface: IMap

Returns LocalMapStats for this map.

LocalMapStats are the statistics for the local portion of this distributed map and contains information such as ownedEntryCount backupEntryCount, lastUpdateTime, lockedEntryCount.

Since this stats are only for the local portion of this map, if you need the cluster-wide MapStats then you need to get the LocalMapStats from all members of the cluster and combine them.

It's guaranteed that the returned LocalMapStats instance contains an up-to-date statistics. But over the time some parts of the returned instance may become stale while others may be updated. To obtain a fresh up-to-date instance invoke the method one more time.

Specified by:

getLocalMapStats in interface IMap<K,V>

Overrides:

getLocalMapStats in class ClientMapProxy<K,V>

Returns:

this map's local statistics

executeOnKeyInternal

public Object executeOnKeyInternal(Object key,
                                   EntryProcessor entryProcessor)

Overrides:

executeOnKeyInternal in class ClientMapProxy<K,V>

submitToKeyInternal

public ICompletableFuture submitToKeyInternal(Object key,
                                              EntryProcessor entryProcessor)

Overrides:

submitToKeyInternal in class ClientMapProxy<K,V>

submitToKeyInternal

public void submitToKeyInternal(Object key,
                                EntryProcessor entryProcessor,
                                ExecutionCallback callback)

Overrides:

submitToKeyInternal in class ClientMapProxy<K,V>

prepareResult

protected Map<K,Object> prepareResult(Collection<Map.Entry<Data,Data>> entrySet)

Overrides:

prepareResult in class ClientMapProxy<K,V>

putAllInternal

protected void putAllInternal(Map<? extends K,? extends V> map,
                              Map<Integer,List<Map.Entry<Data,Data>>> entryMap)

Overrides:

putAllInternal in class ClientMapProxy<K,V>

clear

public void clear()

Description copied from interface: IMap

Clears the map and deletes the items from the backing map store.

The MAP_CLEARED event is fired for any registered listeners. See MapClearedListener.mapCleared(MapEvent).

To clear the map without removing the items from the map store, use IMap.evictAll().

Interactions with the map store

Calls MapStore.deleteAll(Collection) on each partition with the keys that the given partition stores. Exceptions thrown by deleteAll() are not propagated to the caller.

Specified by:

clear in interface IMap<K,V>

Specified by:

clear in interface Map<K,V>

Overrides:

clear in class ClientMapProxy<K,V>

See Also:

IMap.evictAll()

postDestroy

protected void postDestroy()

Description copied from class: ClientProxy

Called after proxy is destroyed.

Overrides:

postDestroy in class ClientProxy

onShutdown

protected void onShutdown()

Description copied from class: ClientProxy

Called before client shutdown. Overriding implementations can add shutdown specific logic here.

Overrides:

onShutdown in class ClientProxy

getNearCache

public NearCache<Object,Object> getNearCache()

addNearCacheInvalidationListener

public String addNearCacheInvalidationListener(EventHandler handler)