/**
* 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.
*
* @param event The load event
* @return The loaded entity, or null.
*/
protected Serializable resolveNaturalId(final ResolveNaturalIdEvent event) {
final EntityPersister persister = event.getEntityPersister();
final boolean traceEnabled = LOG.isTraceEnabled();
if (traceEnabled)
LOG.tracev(
"Attempting to resolve: {0}",
MessageHelper.infoString(
persister, event.getNaturalIdValues(), event.getSession().getFactory()));
Serializable entityId = resolveFromCache(event);
if (entityId != null) {
if (traceEnabled)
LOG.tracev(
"Resolved object in cache: {0}",
MessageHelper.infoString(
persister, event.getNaturalIdValues(), event.getSession().getFactory()));
return entityId;
}
if (traceEnabled)
LOG.tracev(
"Object not resolved in any cache: {0}",
MessageHelper.infoString(
persister, event.getNaturalIdValues(), event.getSession().getFactory()));
return loadFromDatasource(event);
}
