/**
* Attempts to load the entity from the second-level cache.
*
* @return The entity from the second-level cache, or null.
* @throws HibernateException
*/
protected Object loadFromSecondLevelCache(
final LoadEvent event,
final EntityPersister persister,
final LoadEventListener.LoadType options)
throws HibernateException {
final SessionImplementor source = event.getSession();
final boolean useCache =
persister.hasCache()
&& source.getCacheMode().isGetEnabled()
&& event.getLockMode().lessThan(LockMode.READ);
if (useCache) {
final SessionFactoryImplementor factory = source.getFactory();
final CacheKey ck =
new CacheKey(
event.getEntityId(),
persister.getIdentifierType(),
persister.getRootEntityName(),
source.getEntityMode(),
source.getFactory());
Object ce = persister.getCache().get(ck, source.getTimestamp());
if (factory.getStatistics().isStatisticsEnabled()) {
if (ce == null) {
factory
.getStatisticsImplementor()
.secondLevelCacheMiss(persister.getCache().getRegionName());
} else {
factory
.getStatisticsImplementor()
.secondLevelCacheHit(persister.getCache().getRegionName());
}
}
if (ce != null) {
CacheEntry entry = (CacheEntry) persister.getCacheEntryStructure().destructure(ce, factory);
// Entity was found in second-level cache...
return assembleCacheEntry(entry, event.getEntityId(), persister, event);
}
}
return null;
}
@Override
public void execute() throws HibernateException {
nullifyTransientReferencesIfNotAlready();
final EntityPersister persister = getPersister();
final SessionImplementor session = getSession();
final Object instance = getInstance();
final Serializable id = getId();
final boolean veto = preInsert();
// Don't need to lock the cache here, since if someone
// else inserted the same pk first, the insert would fail
if (!veto) {
persister.insert(id, getState(), instance, session);
final EntityEntry entry = session.getPersistenceContext().getEntry(instance);
if (entry == null) {
throw new AssertionFailure("possible non-threadsafe access to session");
}
entry.postInsert(getState());
if (persister.hasInsertGeneratedProperties()) {
persister.processInsertGeneratedProperties(id, instance, getState(), session);
if (persister.isVersionPropertyGenerated()) {
version = Versioning.getVersion(getState(), persister);
}
entry.postUpdate(instance, getState(), version);
}
getSession().getPersistenceContext().registerInsertedKey(getPersister(), getId());
}
final SessionFactoryImplementor factory = getSession().getFactory();
if (isCachePutEnabled(persister, session)) {
final CacheEntry ce = persister.buildCacheEntry(instance, getState(), version, session);
cacheEntry = persister.getCacheEntryStructure().structure(ce);
final CacheKey ck =
session.generateCacheKey(
id, persister.getIdentifierType(), persister.getRootEntityName());
final boolean put = persister.getCacheAccessStrategy().insert(ck, cacheEntry, version);
if (put && factory.getStatistics().isStatisticsEnabled()) {
factory
.getStatisticsImplementor()
.secondLevelCachePut(getPersister().getCacheAccessStrategy().getRegion().getName());
}
}
handleNaturalIdPostSaveNotifications(id);
postInsert();
if (factory.getStatistics().isStatisticsEnabled() && !veto) {
factory.getStatisticsImplementor().insertEntity(getPersister().getEntityName());
}
markExecuted();
}
@Override
public void execute() throws HibernateException {
final Serializable id = getId();
final EntityPersister persister = getPersister();
final SessionImplementor session = getSession();
final Object instance = getInstance();
final boolean veto = preUpdate();
final SessionFactoryImplementor factory = session.getFactory();
Object previousVersion = this.previousVersion;
if (persister.isVersionPropertyGenerated()) {
// we need to grab the version value from the entity, otherwise
// we have issues with generated-version entities that may have
// multiple actions queued during the same flush
previousVersion = persister.getVersion(instance);
}
final Object ck;
if (persister.hasCache()) {
final EntityRegionAccessStrategy cache = persister.getCacheAccessStrategy();
ck = cache.generateCacheKey(id, persister, factory, session.getTenantIdentifier());
lock = cache.lockItem(session, ck, previousVersion);
} else {
ck = null;
}
if (!veto) {
persister.update(
id,
state,
dirtyFields,
hasDirtyCollection,
previousState,
previousVersion,
instance,
rowId,
session);
}
final EntityEntry entry = session.getPersistenceContext().getEntry(instance);
if (entry == null) {
throw new AssertionFailure("possible nonthreadsafe access to session");
}
if (entry.getStatus() == Status.MANAGED || persister.isVersionPropertyGenerated()) {
// get the updated snapshot of the entity state by cloning current state;
// it is safe to copy in place, since by this time no-one else (should have)
// has a reference to the array
TypeHelper.deepCopy(
state, persister.getPropertyTypes(), persister.getPropertyCheckability(), state, session);
if (persister.hasUpdateGeneratedProperties()) {
// this entity defines proeprty generation, so process those generated
// values...
persister.processUpdateGeneratedProperties(id, instance, state, session);
if (persister.isVersionPropertyGenerated()) {
nextVersion = Versioning.getVersion(state, persister);
}
}
// have the entity entry doAfterTransactionCompletion post-update processing, passing it the
// update state and the new version (if one).
entry.postUpdate(instance, state, nextVersion);
}
if (persister.hasCache()) {
if (persister.isCacheInvalidationRequired() || entry.getStatus() != Status.MANAGED) {
persister.getCacheAccessStrategy().remove(session, ck);
} else {
// TODO: inefficient if that cache is just going to ignore the updated state!
final CacheEntry ce = persister.buildCacheEntry(instance, state, nextVersion, getSession());
cacheEntry = persister.getCacheEntryStructure().structure(ce);
final boolean put = cacheUpdate(persister, previousVersion, ck);
if (put && factory.getStatistics().isStatisticsEnabled()) {
factory
.getStatisticsImplementor()
.secondLevelCachePut(getPersister().getCacheAccessStrategy().getRegion().getName());
}
}
}
session
.getPersistenceContext()
.getNaturalIdHelper()
.manageSharedNaturalIdCrossReference(
persister, id, state, previousNaturalIdValues, CachedNaturalIdValueSource.UPDATE);
postUpdate();
if (factory.getStatistics().isStatisticsEnabled() && !veto) {
factory.getStatisticsImplementor().updateEntity(getPersister().getEntityName());
}
}
/**
* 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());
}
}