org.hibernate.event.internal
Class DefaultResolveNaturalIdEventListener

java.lang.Object
  org.hibernate.event.internal.AbstractReassociateEventListener
      org.hibernate.event.internal.AbstractLockUpgradeEventListener
          org.hibernate.event.internal.DefaultResolveNaturalIdEventListener

All Implemented Interfaces:

Serializable, ResolveNaturalIdEventListener

public class DefaultResolveNaturalIdEventListener
extends AbstractLockUpgradeEventListener
implements ResolveNaturalIdEventListener

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

See Also:

Serialized Form

Field Summary

static Object	INCONSISTENT_RTN_CLASS_MARKER
static Object	REMOVED_ENTITY_MARKER

Constructor Summary

DefaultResolveNaturalIdEventListener()

Method Summary

protected Serializable	loadFromDatasource(ResolveNaturalIdEvent event) Performs the process of loading an entity from the configured underlying datasource.
void	onResolveNaturalId(ResolveNaturalIdEvent event) Handle the given resolve natural id event.
protected Serializable	resolveFromCache(ResolveNaturalIdEvent event) Attempts to resolve the entity id corresponding to the event's natural id values from the session
protected Serializable	resolveNaturalId(ResolveNaturalIdEvent event) Coordinates the efforts to load a given entity.

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

Constructor Detail

DefaultResolveNaturalIdEventListener

public DefaultResolveNaturalIdEventListener()

Method Detail

onResolveNaturalId

public void onResolveNaturalId(ResolveNaturalIdEvent event)
                        throws HibernateException

Description copied from interface: ResolveNaturalIdEventListener

Handle the given resolve natural id event.

Specified by:

onResolveNaturalId in interface ResolveNaturalIdEventListener

Parameters:

event - The resolve natural id event to be handled.

Throws:

HibernateException - Indicates a problem resolving natural id to primary key

resolveNaturalId

protected Serializable resolveNaturalId(ResolveNaturalIdEvent event)

Coordinates the efforts to load a given entity. First, an attempt is made to load the entity from the session-level cache. If not found there, an attempt is made to locate it in second-level cache. Lastly, an attempt is made to load it directly from the datasource.

Parameters:

event - The load event

Returns:

The loaded entity, or null.

resolveFromCache

protected Serializable resolveFromCache(ResolveNaturalIdEvent event)

Attempts to resolve the entity id corresponding to the event's natural id values from the session

Parameters:

event - The load event

Returns:

The entity from the cache, or null.

loadFromDatasource

protected Serializable loadFromDatasource(ResolveNaturalIdEvent event)

Performs the process of loading an entity from the configured underlying datasource.

Parameters:

event - The load event

Returns:

The object loaded from the datasource, or null if not found.