private static object[] Assemble(object[] values, object result, object id, IEntityPersister persister,
IInterceptor interceptor, ISessionImplementor session)
{
//assembled state gets put in a new array (we read from cache by value!)
object[] assembledProps = TypeFactory.Assemble(values, persister.PropertyTypes, session, result);
//from h3.2 TODO: reuse the PreLoadEvent
PreLoadEvent preLoadEvent = new PreLoadEvent((IEventSource) session);
preLoadEvent.Entity = result;
preLoadEvent.State=assembledProps;
preLoadEvent.Id = id;
preLoadEvent.Persister=persister;
IPreLoadEventListener[] listeners = session.Listeners.PreLoadEventListeners;
for (int i = 0; i < listeners.Length; i++)
{
listeners[i].OnPreLoad(preLoadEvent);
}
persister.SetPropertyValues(result, assembledProps, session.EntityMode);
return assembledProps;
}
internal void InitializeEntitiesAndCollections(IList hydratedObjects, object resultSetId, ISessionImplementor session,
bool readOnly)
{
ICollectionPersister[] collectionPersisters = CollectionPersisters;
if (collectionPersisters != null)
{
for (int i = 0; i < collectionPersisters.Length; i++)
{
if (collectionPersisters[i].IsArray)
{
//for arrays, we should end the collection load before resolving
//the entities, since the actual array instances are not instantiated
//during loading
//TODO: or we could do this polymorphically, and have two
// different operations implemented differently for arrays
EndCollectionLoad(resultSetId, session, collectionPersisters[i]);
}
}
}
//important: reuse the same event instances for performance!
PreLoadEvent pre;
PostLoadEvent post;
if (session.IsEventSource)
{
var eventSourceSession = (IEventSource) session;
pre = new PreLoadEvent(eventSourceSession);
post = new PostLoadEvent(eventSourceSession);
}
else
{
pre = null;
post = null;
}
if (hydratedObjects != null)
{
int hydratedObjectsSize = hydratedObjects.Count;
if (log.IsDebugEnabled)
{
log.Debug(string.Format("total objects hydrated: {0}", hydratedObjectsSize));
}
for (int i = 0; i < hydratedObjectsSize; i++)
{
TwoPhaseLoad.InitializeEntity(hydratedObjects[i], readOnly, session, pre, post);
}
}
if (collectionPersisters != null)
{
for (int i = 0; i < collectionPersisters.Length; i++)
{
if (!collectionPersisters[i].IsArray)
{
//for sets, we should end the collection load after resolving
//the entities, since we might call hashCode() on the elements
//TODO: or we could do this polymorphically, and have two
// different operations implemented differently for arrays
EndCollectionLoad(resultSetId, session, collectionPersisters[i]);
}
}
}
}
public void OnPreLoad(PreLoadEvent @event){}
/// <summary>
/// Perform the second step of 2-phase load. Fully initialize the entity instance.
/// 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
/// </summary>
public static void InitializeEntity(object entity, bool readOnly, ISessionImplementor session, PreLoadEvent preLoadEvent, PostLoadEvent postLoadEvent)
{
//TODO: Should this be an InitializeEntityEventListener??? (watch out for performance!)
IPersistenceContext persistenceContext = session.PersistenceContext;
EntityEntry entityEntry = persistenceContext.GetEntry(entity);
if (entityEntry == null)
{
throw new AssertionFailure("possible non-threadsafe access to the session");
}
IEntityPersister persister = entityEntry.Persister;
object id = entityEntry.Id;
object[] hydratedState = entityEntry.LoadedState;
if (log.IsDebugEnabled)
log.Debug("resolving associations for " + MessageHelper.InfoString(persister, id, session.Factory));
IType[] types = persister.PropertyTypes;
for (int i = 0; i < hydratedState.Length; i++)
{
object value = hydratedState[i];
if (value != LazyPropertyInitializer.UnfetchedProperty && value != BackrefPropertyAccessor.Unknown)
{
hydratedState[i] = types[i].ResolveIdentifier(value, session, entity);
}
}
//Must occur after resolving identifiers!
if (session.IsEventSource)
{
preLoadEvent.Entity = entity;
preLoadEvent.State = hydratedState;
preLoadEvent.Id = id;
preLoadEvent.Persister=persister;
IPreLoadEventListener[] listeners = session.Listeners.PreLoadEventListeners;
for (int i = 0; i < listeners.Length; i++)
{
listeners[i].OnPreLoad(preLoadEvent);
}
}
persister.SetPropertyValues(entity, hydratedState, session.EntityMode);
ISessionFactoryImplementor factory = session.Factory;
if (persister.HasCache && ((session.CacheMode & CacheMode.Put) == CacheMode.Put))
{
if (log.IsDebugEnabled)
log.Debug("adding entity to second-level cache: " + MessageHelper.InfoString(persister, id, session.Factory));
object version = Versioning.GetVersion(hydratedState, persister);
CacheEntry entry =
new CacheEntry(hydratedState, persister, entityEntry.LoadedWithLazyPropertiesUnfetched, version, session, entity);
CacheKey cacheKey = new CacheKey(id, persister.IdentifierType, persister.RootEntityName, session.EntityMode, session.Factory);
bool put =
persister.Cache.Put(cacheKey, entry, session.Timestamp, version,
persister.IsVersioned ? persister.VersionType.Comparator : null,
UseMinimalPuts(session, entityEntry));
//we could use persister.hasLazyProperties() instead of true
if (put && factory.Statistics.IsStatisticsEnabled)
{
factory.StatisticsImplementor.SecondLevelCachePut(persister.Cache.RegionName);
}
}
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.ReadOnly);
}
else
{
//take a snapshot
TypeFactory.DeepCopy(hydratedState, persister.PropertyTypes, persister.PropertyUpdateability, hydratedState, session);
persistenceContext.SetEntryStatus(entityEntry, Status.Loaded);
}
persister.AfterInitialize(entity, entityEntry.LoadedWithLazyPropertiesUnfetched, session);
if (session.IsEventSource)
{
postLoadEvent.Entity = entity;
postLoadEvent.Id = id;
postLoadEvent.Persister = persister;
IPostLoadEventListener[] listeners = session.Listeners.PostLoadEventListeners;
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.Factory));
if (factory.Statistics.IsStatisticsEnabled)
{
factory.StatisticsImplementor.LoadEntity(persister.EntityName);
}
}
public void OnPreLoad(PreLoadEvent @event)
{
Debug.WriteLine("EventListener.OnPreLoad: {0}", @event.Id);
}
public void OnPreLoad(PreLoadEvent @event)
{
log.Debug("OnPreLoad :" + @event);
}