org.hibernate.event.internal

Class DefaultLoadEventListener

java.lang.Object

org.hibernate.event.internal.AbstractReassociateEventListener

org.hibernate.event.internal.AbstractLockUpgradeEventListener

org.hibernate.event.internal.DefaultLoadEventListener

All Implemented Interfaces:

Serializable, LoadEventListener

public class DefaultLoadEventListener
extends AbstractLockUpgradeEventListener
implements LoadEventListener

Defines the default load event listeners used by hibernate for loading entities in response to generated load events.

Author:

Steve Ebersole

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.hibernate.event.spi.LoadEventListener

LoadEventListener.LoadType

Field Summary

Fields

Modifier and Type	Field and Description
static LockMode	DEFAULT_LOCK_MODE
static Object	INCONSISTENT_RTN_CLASS_MARKER
static Object	REMOVED_ENTITY_MARKER

Fields inherited from interface org.hibernate.event.spi.LoadEventListener

GET, IMMEDIATE_LOAD, INTERNAL_LOAD_EAGER, INTERNAL_LOAD_LAZY, INTERNAL_LOAD_NULLABLE, LOAD, RELOAD

Constructor Summary

Constructors

Constructor and Description
DefaultLoadEventListener()

Method Summary

Modifier and Type	Method and Description
protected Object	loadFromSessionCache(LoadEvent event, EntityKey keyToLoad, LoadEventListener.LoadType options) Attempts to locate the entity in the session-level cache.
void	onLoad(LoadEvent event, LoadEventListener.LoadType loadType) Handle the given load event.

Methods inherited from class org.hibernate.event.internal.AbstractLockUpgradeEventListener

upgradeLock

Methods inherited from class org.hibernate.event.internal.AbstractReassociateEventListener

reassociate

Methods inherited from class java.lang.Object

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

Field Detail

REMOVED_ENTITY_MARKER

public static final Object REMOVED_ENTITY_MARKER

INCONSISTENT_RTN_CLASS_MARKER

public static final Object INCONSISTENT_RTN_CLASS_MARKER

DEFAULT_LOCK_MODE

public static final LockMode DEFAULT_LOCK_MODE

Constructor Detail

DefaultLoadEventListener

public DefaultLoadEventListener()

Method Detail

onLoad

public void onLoad(LoadEvent event,
                   LoadEventListener.LoadType loadType)
            throws HibernateException

Handle the given load event.

Specified by:

onLoad in interface LoadEventListener

Parameters:

event - The load event to be handled.

Throws:

HibernateException

loadFromSessionCache

protected Object loadFromSessionCache(LoadEvent event,
                                      EntityKey keyToLoad,
                                      LoadEventListener.LoadType options)
                               throws HibernateException

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 set to true, then if the entity is found in the session-level cache, it's current status within the session cache is checked to see if it has previously been scheduled for deletion.

Parameters:

event - The load event

keyToLoad - The EntityKey representing the entity to be loaded.

options - The load options.

Returns:

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

Throws:

HibernateException - Generally indicates problems applying a lock-mode.