Package org.hibernate.loader.internal

Class CacheLoadHelper

java.lang.Object

org.hibernate.loader.internal.CacheLoadHelper

public class CacheLoadHelper
extends Object

Some logic which originally resided in DefaultLoadEventListener and in DefaultInitializeCollectionEventListener but was moved here to make it reusable.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final record	CacheLoadHelper.PersistenceContextEntry

Method Summary

Modifier and Type	Method	Description
static CacheLoadHelper.PersistenceContextEntry.EntityStatus	entityStatus(EntityKey keyToLoad, LoadEventListener.LoadType options, SharedSessionContractImplementor session, EntityEntry oldEntry, Object old)
static boolean	initializeCollectionFromCache(Object key, CollectionPersister persister, PersistentCollection<?> collection, SharedSessionContractImplementor source)	Try to initialize a collection from the cache
static Object	loadFromSecondLevelCache(SharedSessionContractImplementor source, Object entity, LockMode lockMode, EntityPersister persister, EntityKey entityKey)	Attempts to load the entity from the second-level cache.
static CacheLoadHelper.PersistenceContextEntry	loadFromSessionCache(EntityKey keyToLoad, LockOptions lockOptions, LoadEventListener.LoadType options, SharedSessionContractImplementor session)	Attempts to locate the entity in the session-level cache.

Methods inherited from class java.lang.Object

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

Method Details

loadFromSessionCache

public static CacheLoadHelper.PersistenceContextEntry loadFromSessionCache(EntityKey keyToLoad,
 LockOptions lockOptions,
 LoadEventListener.LoadType options,
 SharedSessionContractImplementor session)

Attempts to locate the entity in the session-level cache.

If allowed to return nulls, then if the entity happens to be found in the session cache, we check the entity type for proper handling of entity hierarchies.

If checkDeleted was true, and if the entity is found in the session-level cache, its current status within the session cache is checked to see if it has previously been scheduled for deletion.

Parameters:

keyToLoad - The EntityKey representing the entity to be loaded

lockOptions - The lock options

options - The load options

session - The originating session

Returns:

The entity from the session-level cache, or null.

Throws:

HibernateException - Generally indicates problems applying a lock mode.

entityStatus

public static CacheLoadHelper.PersistenceContextEntry.EntityStatus entityStatus(EntityKey keyToLoad,
 LoadEventListener.LoadType options,
 SharedSessionContractImplementor session,
 EntityEntry oldEntry,
 Object old)

loadFromSecondLevelCache

public static Object loadFromSecondLevelCache(SharedSessionContractImplementor source,
 Object entity,
 LockMode lockMode,
 EntityPersister persister,
 EntityKey entityKey)

Attempts to load the entity from the second-level cache.

Parameters:

source - The source

entity - The entity

lockMode - The lock mode

persister - The persister for the entity being requested for load

entityKey - The entity key

Returns:

The entity from the second-level cache, or null.

initializeCollectionFromCache

public static boolean initializeCollectionFromCache(Object key,
 CollectionPersister persister,
 PersistentCollection<?> collection,
 SharedSessionContractImplementor source)

Try to initialize a collection from the cache

Parameters:

key - The key of the collection to initialize

persister - The collection persister

collection - The collection to initialize

source - The originating session

Returns:

true if we were able to initialize the collection from the cache; false otherwise.