@SuppressWarnings("unchecked")
@Override
/**
* Handle the given delete event. This is the cascaded form.
*
* @param event The delete event.
* @param transientEntities The cache of entities already deleted
* @throws HibernateException
*/
public void onDelete(DeleteEvent event, Set transientEntities) throws HibernateException {
final EventSource source = event.getSession();
final PersistenceContext persistenceContext = source.getPersistenceContext();
Object entity = persistenceContext.unproxyAndReassociate(event.getObject());
EntityEntry entityEntry = persistenceContext.getEntry(entity);
final EntityPersister persister = source.getEntityPersister(event.getEntityName(), entity);
final Object version;
if (persister.isVersioned()) {
version = persister.getVersion(entity, source.getEntityMode());
// Make sure version has not changed on deleted entities
if ((entity instanceof TimelineEntity) && !((TimelineEntity) entity).isNew()) {
if (!persister.getVersionType().isEqual(version, entityEntry.getVersion())) {
throw new StaleObjectStateException(persister.getEntityName(), entityEntry.getId());
}
}
}
super.onDelete(event, transientEntities);
}
/**
* Register the "hydrated" state of an entity instance, after the first step of 2-phase loading.
*
* <p>Add the "hydrated state" (an array) of an uninitialized entity to the session. We don't try
* to resolve any associations yet, because there might be other entities waiting to be read from
* the JDBC result set we are currently processing
*/
public static void postHydrate(
final EntityPersister persister,
final Serializable id,
final Object[] values,
final Object rowId,
final Object object,
final LockMode lockMode,
final boolean lazyPropertiesAreUnfetched,
final SessionImplementor session)
throws HibernateException {
Object version = Versioning.getVersion(values, persister);
session
.getPersistenceContext()
.addEntry(
object,
Status.LOADING,
values,
rowId,
id,
version,
lockMode,
true,
persister,
false,
lazyPropertiesAreUnfetched);
if (log.isTraceEnabled() && version != null) {
String versionStr =
persister.isVersioned()
? persister.getVersionType().toLoggableString(version, session.getFactory())
: "null";
log.trace("Version: " + versionStr);
}
}
/** Convience method to retreive an entities next version value */
private Object getNextVersion(FlushEntityEvent event) throws HibernateException {
EntityEntry entry = event.getEntityEntry();
EntityPersister persister = entry.getPersister();
if (persister.isVersioned()) {
Object[] values = event.getPropertyValues();
if (entry.isBeingReplicated()) {
return Versioning.getVersion(values, persister);
} else {
int[] dirtyProperties = event.getDirtyProperties();
final boolean isVersionIncrementRequired =
isVersionIncrementRequired(event, entry, persister, dirtyProperties);
final Object nextVersion =
isVersionIncrementRequired
? Versioning.increment(
entry.getVersion(), persister.getVersionType(), event.getSession())
: entry.getVersion(); // use the current version
Versioning.setVersion(values, nextVersion, persister);
return nextVersion;
}
} else {
return null;
}
}
/**
* Perform any property value substitution that is necessary (interceptor callback, version
* initialization...)
*
* @param entity The entity
* @param id The entity identifier
* @param values The snapshot entity state
* @param persister The entity persister
* @param source The originating session
* @return True if the snapshot state changed such that reinjection of the values into the entity
* is required.
*/
protected boolean substituteValuesIfNecessary(
Object entity,
Serializable id,
Object[] values,
EntityPersister persister,
SessionImplementor source) {
boolean substitute =
source
.getInterceptor()
.onSave(entity, id, values, persister.getPropertyNames(), persister.getPropertyTypes());
// keep the existing version number in the case of replicate!
if (persister.isVersioned()) {
substitute =
Versioning.seedVersion(
values, persister.getVersionProperty(), persister.getVersionType(), source)
|| substitute;
}
return substitute;
}
/**
* Perform the second step of 2-phase load. Fully initialize the entity instance.
*
* <p>After processing a JDBC result set, we "resolve" all the associations between the entities
* which were instantiated and had their state "hydrated" into an array
*/
public static void initializeEntity(
final Object entity,
final boolean readOnly,
final SessionImplementor session,
final PreLoadEvent preLoadEvent,
final PostLoadEvent postLoadEvent)
throws HibernateException {
// TODO: Should this be an InitializeEntityEventListener??? (watch out for performance!)
final PersistenceContext persistenceContext = session.getPersistenceContext();
EntityEntry entityEntry = persistenceContext.getEntry(entity);
if (entityEntry == null) {
throw new AssertionFailure("possible non-threadsafe access to the session");
}
EntityPersister persister = entityEntry.getPersister();
Serializable id = entityEntry.getId();
Object[] hydratedState = entityEntry.getLoadedState();
if (log.isDebugEnabled())
log.debug(
"resolving associations for "
+ MessageHelper.infoString(persister, id, session.getFactory()));
Type[] types = persister.getPropertyTypes();
for (int i = 0; i < hydratedState.length; i++) {
final Object value = hydratedState[i];
if (value != LazyPropertyInitializer.UNFETCHED_PROPERTY
&& value != BackrefPropertyAccessor.UNKNOWN) {
hydratedState[i] = types[i].resolve(value, session, entity);
}
}
// Must occur after resolving identifiers!
if (session.isEventSource()) {
preLoadEvent.setEntity(entity).setState(hydratedState).setId(id).setPersister(persister);
PreLoadEventListener[] listeners = session.getListeners().getPreLoadEventListeners();
for (int i = 0; i < listeners.length; i++) {
listeners[i].onPreLoad(preLoadEvent);
}
}
persister.setPropertyValues(entity, hydratedState, session.getEntityMode());
final SessionFactoryImplementor factory = session.getFactory();
if (persister.hasCache() && session.getCacheMode().isPutEnabled()) {
if (log.isDebugEnabled())
log.debug(
"adding entity to second-level cache: "
+ MessageHelper.infoString(persister, id, session.getFactory()));
Object version = Versioning.getVersion(hydratedState, persister);
CacheEntry entry =
new CacheEntry(
hydratedState,
persister,
entityEntry.isLoadedWithLazyPropertiesUnfetched(),
version,
session,
entity);
CacheKey cacheKey =
new CacheKey(
id,
persister.getIdentifierType(),
persister.getRootEntityName(),
session.getEntityMode(),
session.getFactory());
boolean put =
persister
.getCache()
.put(
cacheKey,
persister.getCacheEntryStructure().structure(entry),
session.getTimestamp(),
version,
persister.isVersioned() ? persister.getVersionType().getComparator() : null,
useMinimalPuts(
session,
entityEntry)); // we could use persister.hasLazyProperties() instead of true
if (put && factory.getStatistics().isStatisticsEnabled()) {
factory
.getStatisticsImplementor()
.secondLevelCachePut(persister.getCache().getRegionName());
}
}
if (readOnly || !persister.isMutable()) {
// no need to take a snapshot - this is a
// performance optimization, but not really
// important, except for entities with huge
// mutable property values
persistenceContext.setEntryStatus(entityEntry, Status.READ_ONLY);
} else {
// take a snapshot
TypeFactory.deepCopy(
hydratedState,
persister.getPropertyTypes(),
persister.getPropertyUpdateability(),
hydratedState, // after setting values to object, entityMode
session);
persistenceContext.setEntryStatus(entityEntry, Status.MANAGED);
}
persister.afterInitialize(entity, entityEntry.isLoadedWithLazyPropertiesUnfetched(), session);
if (session.isEventSource()) {
postLoadEvent.setEntity(entity).setId(id).setPersister(persister);
PostLoadEventListener[] listeners = session.getListeners().getPostLoadEventListeners();
for (int i = 0; i < listeners.length; i++) {
listeners[i].onPostLoad(postLoadEvent);
}
}
if (log.isDebugEnabled())
log.debug(
"done materializing entity "
+ MessageHelper.infoString(persister, id, session.getFactory()));
if (factory.getStatistics().isStatisticsEnabled()) {
factory.getStatisticsImplementor().loadEntity(persister.getEntityName());
}
}