org.apache.ignite.cache.hibernate

Class HibernateReadWriteAccessStrategy

java.lang.Object

org.apache.ignite.cache.hibernate.HibernateAccessStrategyAdapter

org.apache.ignite.cache.hibernate.HibernateReadWriteAccessStrategy

public class HibernateReadWriteAccessStrategy
extends HibernateAccessStrategyAdapter

Implementation of READ_WRITE cache access strategy.

Configuration of L2 cache and per-entity cache access strategy can be set in the Hibernate configuration file:

 <hibernate-configuration>
     <!-- Enable L2 cache. -->
     <property name="cache.use_second_level_cache">true</property>

     <!-- Use Ignite as L2 cache provider. -->
     <property name="cache.region.factory_class">org.apache.ignite.cache.hibernate.HibernateRegionFactory</property>

     <!-- Specify entity. -->
     <mapping class="com.example.Entity"/>

     <!-- Enable L2 cache with read-write access strategy for entity. -->
     <class-cache class="com.example.Entity" usage="read-write"/>
 </hibernate-configuration>
 

Also cache access strategy can be set using annotations:

 @javax.persistence.Entity
 @javax.persistence.Cacheable
 @org.hibernate.annotations.Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
 public class Entity { ... }
 

Field Summary

Fields inherited from class org.apache.ignite.cache.hibernate.HibernateAccessStrategyAdapter

cache, ignite, log

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	HibernateReadWriteAccessStrategy(Ignite ignite, HibernateCacheProxy cache, ThreadLocal txCtx, HibernateExceptionConverter eConverter)

Method Summary

Modifier and Type	Method and Description
boolean	afterInsert(Object key, Object val) Called after Hibernate inserted object in the database and transaction successfully completed.
boolean	afterUpdate(Object key, Object val) Called after Hibernate updated object in the database and transaction successfully completed.
Object	get(Object key)
boolean	insert(Object key, Object val) Called after Hibernate inserted object in the database but before transaction completed.
void	lock(Object key) Called during database transaction execution before Hibernate attempts to update or remove given key.
void	putFromLoad(Object key, Object val) Puts in cache value loaded from the database.
void	remove(Object key) Called after Hibernate removed object from database but before transaction completed.
void	unlock(Object key) Called after Hibernate failed to update or successfully removed given key.
boolean	update(Object key, Object val) Called after Hibernate updated object in the database but before transaction completed.

Methods inherited from class org.apache.ignite.cache.hibernate.HibernateAccessStrategyAdapter

evict, evict, evictAll, evictAll, lockRegion, putFromLoad, removeAll, unlockRegion

Methods inherited from class java.lang.Object

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

Constructor Detail

HibernateReadWriteAccessStrategy

protected HibernateReadWriteAccessStrategy(Ignite ignite,
                                           HibernateCacheProxy cache,
                                           ThreadLocal txCtx,
                                           HibernateExceptionConverter eConverter)

Parameters:

ignite - Grid.

cache - Cache.

txCtx - Thread local instance used to track updates done during one Hibernate transaction.

eConverter - Exception converter.

Method Detail

get

public Object get(Object key)

Overrides:

get in class HibernateAccessStrategyAdapter

Parameters:

key - Key.

Returns:

Cached value.

putFromLoad

public void putFromLoad(Object key,
                        Object val)

Puts in cache value loaded from the database.

Overrides:

putFromLoad in class HibernateAccessStrategyAdapter

Parameters:

key - Key.

val - Value.

lock

public void lock(Object key)

Called during database transaction execution before Hibernate attempts to update or remove given key.

Specified by:

lock in class HibernateAccessStrategyAdapter

Parameters:

key - Key.

unlock

public void unlock(Object key)

Called after Hibernate failed to update or successfully removed given key.

Specified by:

unlock in class HibernateAccessStrategyAdapter

Parameters:

key - Key.

update

public boolean update(Object key,
                      Object val)

Called after Hibernate updated object in the database but before transaction completed.

Specified by:

update in class HibernateAccessStrategyAdapter

Parameters:

key - Key.

val - Value.

Returns:

True if operation updated cache.

afterUpdate

public boolean afterUpdate(Object key,
                           Object val)

Called after Hibernate updated object in the database and transaction successfully completed.

Specified by:

afterUpdate in class HibernateAccessStrategyAdapter

Parameters:

key - Key.

val - Value.

Returns:

True if operation updated cache.

insert

public boolean insert(Object key,
                      Object val)

Called after Hibernate inserted object in the database but before transaction completed.

Specified by:

insert in class HibernateAccessStrategyAdapter

Parameters:

key - Key.

val - Value.

Returns:

True if operation updated cache.

afterInsert

public boolean afterInsert(Object key,
                           Object val)

Called after Hibernate inserted object in the database and transaction successfully completed.

Specified by:

afterInsert in class HibernateAccessStrategyAdapter

Parameters:

key - Key.

val - Value.

Returns:

True if operation updated cache.

remove

public void remove(Object key)

Called after Hibernate removed object from database but before transaction completed.

Specified by:

remove in class HibernateAccessStrategyAdapter

Parameters:

key - Key,