org.redisson

Class RedissonLiveObjectService

java.lang.Object

org.redisson.RedissonLiveObjectService

All Implemented Interfaces:

RLiveObjectService

public class RedissonLiveObjectService
extends Object
implements RLiveObjectService

Constructor Summary

Constructors

Constructor and Description
RedissonLiveObjectService(ConcurrentMap<Class<?>,Class<?>> classCache, CommandAsyncExecutor commandExecutor)

Method Summary

Modifier and Type	Method and Description
<T> RLiveObject	asLiveObject(T instance) To cast the instance to RLiveObject instance.
<T,K,V> RMap<K,V>	asRMap(T instance) To cast the instance to RMap instance.
<T> T	attach(T detachedObject) Returns proxied object for the detached object.
long	count(Class<?> entityClass, Condition condition) Counts the entities matches specified condition.
<T> T	createLiveObject(Class<T> entityClass, Object id)
<T> long	delete(Class<T> entityClass, Object... ids) Deletes object by class and ids including all nested objects.
RFuture<Long>	delete(Object id, Class<?> entityClass, NamingScheme namingScheme, CommandBatchService ce)
<T> void	delete(T attachedObject) Deletes attached object including all nested objects.
<T> T	detach(T attachedObject) Returns unproxied detached object for the attached object.
<T> Collection<T>	find(Class<T> entityClass, Condition condition) Finds the entities matches specified condition.
<K> Iterable<K>	findIds(Class<?> entityClass) Returns iterator for all entry ids by specified entityClass.
<K> Iterable<K>	findIds(Class<?> entityClass, int count) Returns iterator for all entry ids by specified entityClass.
<T> T	get(Class<T> entityClass, Object id) Finds the entity from Redis with the id.
boolean	isClassRegistered(Class<?> cls) Check if the class is registered in the cache.
<T> boolean	isExists(T instance) Returns true if the RLiveObject already exists in redis.
<T> boolean	isLiveObject(T instance) Returns true if the instance is a instance of RLiveObject.
<T> T	merge(T detachedObject) Returns proxied object for the detached object.
<T> List<T>	persist(T... detachedObjects) Returns proxied attached objects for the detached objects.
<T> T	persist(T detachedObject) Returns proxied attached object for the detached object.
void	registerClass(Class<?> cls) Pre register the class with the service, registering all the classes on startup can speed up the instance creation.
void	unregisterClass(Class<?> cls) Unregister the class with the service.

Methods inherited from class java.lang.Object

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

Constructor Detail

RedissonLiveObjectService

public RedissonLiveObjectService(ConcurrentMap<Class<?>,Class<?>> classCache,
                                 CommandAsyncExecutor commandExecutor)

Method Detail

createLiveObject

public <T> T createLiveObject(Class<T> entityClass,
                              Object id)

get

public <T> T get(Class<T> entityClass,
                 Object id)

Description copied from interface: RLiveObjectService

Finds the entity from Redis with the id. The entityClass should have a field annotated with RId, and the entityClass itself should have REntity annotated. The type of the RId can be anything except the followings:

1. An array i.e. byte[], int[], Integer[], etc.
2. or a RObject i.e. RedissonMap
3. or a Class with REntity annotation.

Specified by:

get in interface RLiveObjectService

Type Parameters:

T - Entity type

Parameters:

entityClass - - entity class

id - identifier

Returns:

a proxied object if it exists in redis, or null if not.

find

public <T> Collection<T> find(Class<T> entityClass,
                              Condition condition)

Description copied from interface: RLiveObjectService

Finds the entities matches specified condition. Usage example:

 Collection objects = liveObjectService.find(MyObject.class, Conditions.or(Conditions.in("field", "value1", "value2"), 
                          Conditions.and(Conditions.eq("field2", "value2"), Conditions.eq("field3", "value5"))));
 

Specified by:

find in interface RLiveObjectService

Type Parameters:

T - Entity type

Parameters:

entityClass - - entity class

condition - - condition object

Returns:

collection of live objects or empty collection.

See Also:

Conditions

count

public long count(Class<?> entityClass,
                  Condition condition)

Description copied from interface: RLiveObjectService

Counts the entities matches specified condition. Usage example:

 long objectsAmount = liveObjectService.count(MyObject.class, Conditions.or(Conditions.in("field", "value1", "value2"),
                          Conditions.and(Conditions.eq("field2", "value2"), Conditions.eq("field3", "value5"))));
 

Specified by:

count in interface RLiveObjectService

Parameters:

entityClass - - entity class

condition - - condition object

Returns:

amount of live objects.

See Also:

Conditions

attach

public <T> T attach(T detachedObject)

Description copied from interface: RLiveObjectService

Returns proxied object for the detached object. Discard all the field values already in the detached instance. The class representing this object should have a field annotated with RId, and the object should hold a non null value in that field. If this object is not in redis then a new blank proxied instance with the same RId field value will be created.

Specified by:

attach in interface RLiveObjectService

Type Parameters:

T - Entity type

Parameters:

detachedObject - - not proxied object

Returns:

proxied object

merge

public <T> T merge(T detachedObject)

Description copied from interface: RLiveObjectService

Returns proxied object for the detached object. Transfers all the NON NULL field values to the redis server. It does not delete any existing data in redis in case of the field value is null. The class representing this object should have a field annotated with RId, and the object should hold a non null value in that field. If this object is not in redis then a new hash key will be created to store it. Otherwise overrides current object state in Redis with the given object state.

Specified by:

merge in interface RLiveObjectService

Type Parameters:

T - Entity type

Parameters:

detachedObject - - not proxied object

Returns:

proxied object

persist

public <T> T persist(T detachedObject)

Description copied from interface: RLiveObjectService

Returns proxied attached object for the detached object. Transfers all the NON NULL field values to the redis server. Only when the it does not already exist.

Specified by:

persist in interface RLiveObjectService

Type Parameters:

T - Entity type

Parameters:

detachedObject - - not proxied object

Returns:

proxied object

persist

public <T> List<T> persist(T... detachedObjects)

Description copied from interface: RLiveObjectService

Returns proxied attached objects for the detached objects. Stores all the NON NULL field values.

Specified by:

persist in interface RLiveObjectService

Type Parameters:

T - Entity type

Parameters:

detachedObjects - - not proxied objects

Returns:

list of proxied objects

detach

public <T> T detach(T attachedObject)

Description copied from interface: RLiveObjectService

Returns unproxied detached object for the attached object.

Specified by:

detach in interface RLiveObjectService

Type Parameters:

T - Entity type

Parameters:

attachedObject - - proxied object

Returns:

proxied object

delete

public <T> void delete(T attachedObject)

Description copied from interface: RLiveObjectService

Deletes attached object including all nested objects.

Specified by:

delete in interface RLiveObjectService

Type Parameters:

T - Entity type

Parameters:

attachedObject - - proxied object

delete

public <T> long delete(Class<T> entityClass,
                       Object... ids)

Description copied from interface: RLiveObjectService

Deletes object by class and ids including all nested objects.

Specified by:

delete in interface RLiveObjectService

Type Parameters:

T - Entity type

Parameters:

entityClass - - object class

ids - - object ids

Returns:

amount of deleted objects

delete

public RFuture<Long> delete(Object id,
                            Class<?> entityClass,
                            NamingScheme namingScheme,
                            CommandBatchService ce)

findIds

public <K> Iterable<K> findIds(Class<?> entityClass)

Description copied from interface: RLiveObjectService

Returns iterator for all entry ids by specified entityClass. Ids traversed with SCAN operation. Each SCAN operation loads up to count keys per request.

Specified by:

findIds in interface RLiveObjectService

Type Parameters:

K - Key type

Parameters:

entityClass - - entity class

Returns:

collection of ids or empty collection.

findIds

public <K> Iterable<K> findIds(Class<?> entityClass,
                               int count)

Description copied from interface: RLiveObjectService

Returns iterator for all entry ids by specified entityClass. Ids traversed with SCAN operation. Each SCAN operation loads up to count keys per request.

Specified by:

findIds in interface RLiveObjectService

Type Parameters:

K - Key type

Parameters:

entityClass - - entity class

count - - keys loaded per request to Redis

Returns:

collection of ids or empty collection.

asLiveObject

public <T> RLiveObject asLiveObject(T instance)

Description copied from interface: RLiveObjectService

To cast the instance to RLiveObject instance.

Specified by:

asLiveObject in interface RLiveObjectService

Type Parameters:

T - type of instance

Parameters:

instance - - live object

Returns:

RLiveObject compatible object

asRMap

public <T,K,V> RMap<K,V> asRMap(T instance)

Description copied from interface: RLiveObjectService

To cast the instance to RMap instance.

Specified by:

asRMap in interface RLiveObjectService

Type Parameters:

T - type of instance

K - type of key

V - type of value

Parameters:

instance - - live object

Returns:

RMap compatible object

isLiveObject

public <T> boolean isLiveObject(T instance)

Description copied from interface: RLiveObjectService

Returns true if the instance is a instance of RLiveObject.

Specified by:

isLiveObject in interface RLiveObjectService

Type Parameters:

T - type of instance

Parameters:

instance - - live object

Returns:

true object is RLiveObject

isExists

public <T> boolean isExists(T instance)

Description copied from interface: RLiveObjectService

Returns true if the RLiveObject already exists in redis. It will return false if the passed object is not a RLiveObject.

Specified by:

isExists in interface RLiveObjectService

Type Parameters:

T - type of instance

Parameters:

instance - - live object

Returns:

true object exists

registerClass

public void registerClass(Class<?> cls)

Description copied from interface: RLiveObjectService

Pre register the class with the service, registering all the classes on startup can speed up the instance creation. This is NOT mandatory since the class will also be registered lazily when it is first used. All classed registered with the service is stored in a class cache. The cache is independent between different RedissonClient instances. When a class is registered in one RLiveObjectService instance it is also accessible in another RLiveObjectService instance so long as they are created by the same RedissonClient instance.

Specified by:

registerClass in interface RLiveObjectService

Parameters:

cls - - class

unregisterClass

public void unregisterClass(Class<?> cls)

Description copied from interface: RLiveObjectService

Unregister the class with the service. This is useful after you decide the class is no longer required. A class will be automatically unregistered if the service encountered any errors during proxying or creating the object, since those errors are not recoverable. All classed registered with the service is stored in a class cache. The cache is independent between different RedissonClient instances. When a class is registered in one RLiveObjectService instance it is also accessible in another RLiveObjectService instance so long as they are created by the same RedissonClient instance.

Specified by:

unregisterClass in interface RLiveObjectService

Parameters:

cls - It can be either the proxied class or the unproxied conterpart.

isClassRegistered

public boolean isClassRegistered(Class<?> cls)

Description copied from interface: RLiveObjectService

Check if the class is registered in the cache. All classed registered with the service is stored in a class cache. The cache is independent between different RedissonClient instances. When a class is registered in one RLiveObjectService instance it is also accessible in another RLiveObjectService instance so long as they are created by the same RedissonClient instance.

Specified by:

isClassRegistered in interface RLiveObjectService

Parameters:

cls - - type of instance

Returns:

true if class already registered