public bool Equals(EntityUniqueKey that)
{
return(that != null && that.EntityName.Equals(entityName) && that.UniqueKeyName.Equals(uniqueKeyName) &&
// Normally entities are cached by semi-resolved type only, but the initial fix of #1226 causes them to
// be cached by type too. This may then cause issues (including Stack Overflow Exception) when this
// happens with the that.keyType being an entity type while its value is an uninitialized proxy: if
// this.keyType is not an entity type too, its IsEqual will trigger the proxy loading.
// So we need to short-circuit on keyType inequality, at least till Loader.CacheByUniqueKey is removed.
// 6.0 TODO: consider removing the keyType.Equals(that.keyType) check, see above comment.
keyType.Equals(that.keyType) &&
keyType.IsEqual(that.key, key));
}
/// <summary>
/// Hydrate the state of an object from the SQL <c>IDataReader</c>, into
/// an array of "hydrated" values (do not resolve associations yet),
/// and pass the hydrated state to the session.
/// </summary>
private void LoadFromResultSet(IDataReader rs, int i, object obj, string instanceClass, EntityKey key,
string rowIdAlias, LockMode lockMode, ILoadable rootPersister,
ISessionImplementor session)
{
object id = key.Identifier;
// Get the persister for the _subclass_
ILoadable persister = (ILoadable) Factory.GetEntityPersister(instanceClass);
if (log.IsDebugEnabled)
{
log.Debug("Initializing object from DataReader: " + MessageHelper.InfoString(persister, id));
}
bool eagerPropertyFetch = IsEagerPropertyFetchEnabled(i);
// add temp entry so that the next step is circular-reference
// safe - only needed because some types don't take proper
// advantage of two-phase-load (esp. components)
TwoPhaseLoad.AddUninitializedEntity(key, obj, persister, lockMode, !eagerPropertyFetch, session);
// This is not very nice (and quite slow):
string[][] cols = persister == rootPersister
? EntityAliases[i].SuffixedPropertyAliases
: EntityAliases[i].GetSuffixedPropertyAliases(persister);
object[] values = persister.Hydrate(rs, id, obj, rootPersister, cols, eagerPropertyFetch, session);
object rowId = persister.HasRowId ? rs[rowIdAlias] : null;
IAssociationType[] ownerAssociationTypes = OwnerAssociationTypes;
if (ownerAssociationTypes != null && ownerAssociationTypes[i] != null)
{
string ukName = ownerAssociationTypes[i].RHSUniqueKeyPropertyName;
if (ukName != null)
{
int index = ((IUniqueKeyLoadable) persister).GetPropertyIndex(ukName);
IType type = persister.PropertyTypes[index];
// polymorphism not really handled completely correctly,
// perhaps...well, actually its ok, assuming that the
// entity name used in the lookup is the same as the
// the one used here, which it will be
EntityUniqueKey euk =
new EntityUniqueKey(rootPersister.EntityName, ukName, type.SemiResolve(values[index], session, obj), type,
session.EntityMode, session.Factory);
session.PersistenceContext.AddEntity(euk, obj);
}
}
TwoPhaseLoad.PostHydrate(persister, id, values, rowId, obj, lockMode, !eagerPropertyFetch, session);
}
/// <summary> Add an entity to the cache by unique key</summary>
public void AddEntity(EntityUniqueKey euk, object entity)
{
entitiesByUniqueKey[euk] = entity;
}
/// <summary> Get an entity cached by unique key</summary>
public object GetEntity(EntityUniqueKey euk)
{
object result;
entitiesByUniqueKey.TryGetValue(euk, out result);
return result;
}
/// <summary>
/// Load an instance by a unique key that is not the primary key.
/// </summary>
/// <param name="entityName">The name of the entity to load </param>
/// <param name="uniqueKeyPropertyName">The name of the property defining the uniqie key. </param>
/// <param name="key">The unique key property value. </param>
/// <param name="session">The originating session. </param>
/// <returns> The loaded entity </returns>
public object LoadByUniqueKey(string entityName, string uniqueKeyPropertyName, object key, ISessionImplementor session)
{
ISessionFactoryImplementor factory = session.Factory;
IUniqueKeyLoadable persister = (IUniqueKeyLoadable)factory.GetEntityPersister(entityName);
//TODO: implement caching?! proxies?!
EntityUniqueKey euk =
new EntityUniqueKey(entityName, uniqueKeyPropertyName, key, GetIdentifierOrUniqueKeyType(factory),
session.EntityMode, session.Factory);
IPersistenceContext persistenceContext = session.PersistenceContext;
try
{
object result = persistenceContext.GetEntity(euk);
if (result == null)
{
result = persister.LoadByUniqueKey(uniqueKeyPropertyName, key, session);
}
return result == null ? null : persistenceContext.ProxyFor(result);
}
catch (HibernateException)
{
// Do not call Convert on HibernateExceptions
throw;
}
catch (Exception sqle)
{
throw ADOExceptionHelper.Convert(factory.SQLExceptionConverter, sqle, "Error performing LoadByUniqueKey");
}
}
public bool Equals(EntityUniqueKey that)
{
return(that == null ? false :
that.EntityName.Equals(entityName) && that.UniqueKeyName.Equals(uniqueKeyName) && keyType.IsEqual(that.key, key, entityMode));
}
public bool Equals(EntityUniqueKey that)
{
return that == null ? false :
that.EntityName.Equals(entityName) && that.UniqueKeyName.Equals(uniqueKeyName) && keyType.IsEqual(that.key, key, entityMode);
}
