/// <summary>Gets the unique instance for the cache for the identification</summary>
public static NeoDatis.Odb.Core.Transaction.ICrossSessionCache GetInstance(string
baseIdentification)
{
ICrossSessionCache cache = null;
instances.TryGetValue(baseIdentification, out cache);
if (cache == null)
{
lock (instances)
{
cache = new CrossSessionCache();
instances[baseIdentification] = cache;
}
}
return(cache);
}
public virtual object BuildOneInstance(NonNativeObjectInfo objectInfo)
{
ICache cache = GetSession().GetCache();
// verify if the object is check to delete
if (objectInfo.IsDeletedObject())
{
throw new ODBRuntimeException(NeoDatisError.ObjectIsMarkedAsDeletedForOid.AddParameter(objectInfo.GetOid()));
}
// Then check if object is in cache
object o = cache.GetObjectWithOid(objectInfo.GetOid());
if (o != null)
{
return(o);
}
Type instanceClazz = null;
instanceClazz = classPool.GetClass(objectInfo.GetClassInfo().GetFullClassName());
try
{
o = classIntrospector.NewInstanceOf(instanceClazz);
}
catch (System.Exception e)
{
throw new ODBRuntimeException(NeoDatisError.InstanciationError.AddParameter(objectInfo.GetClassInfo().GetFullClassName()), e);
}
// This can happen if ODB can not create the instance
// TODO Check if returning null is correct
if (o == null)
{
return(null);
}
// Keep the initial hash code. In some cases, when the class redefines
// the hash code method
// Hash code can return wrong values when attributes are not set (when
// hash code depends on attribute values)
// Hash codes are used as the key of the map,
// So at the end of this method, if hash codes are different, object
// will be removed from the cache and inserted back
bool hashCodeIsOk = true;
int initialHashCode = 0;
try
{
initialHashCode = o.GetHashCode();
}
catch (System.Exception)
{
hashCodeIsOk = false;
}
// Adds this incomplete instance in the cache to manage cyclic reference
if (hashCodeIsOk)
{
cache.AddObject(objectInfo.GetOid(), o, objectInfo.GetHeader());
}
ClassInfo ci = objectInfo.GetClassInfo();
IOdbList <FieldInfo> fields = classIntrospector.GetAllFields(ci.GetFullClassName());
FieldInfo field = null;
AbstractObjectInfo aoi = null;
object value = null;
for (int i = 0; i < fields.Count; i++)
{
field = fields[i];
// Gets the id of this field
int attributeId = ci.GetAttributeId(field.Name);
if (OdbConfiguration.IsDebugEnabled(LogIdDebug))
{
DLogger.Debug("getting field with name " + field.Name + ", attribute id is " + attributeId);
}
aoi = objectInfo.GetAttributeValueFromId(attributeId);
// Check consistency
// ensureClassCompatibily(field,
// instanceInfo.getClassInfo().getAttributeinfo(i).getFullClassname());
if (aoi != null && (!aoi.IsNull()))
{
if (aoi.IsNative())
{
if (aoi.IsAtomicNativeObject())
{
if (aoi.IsNull())
{
value = null;
}
else
{
value = aoi.GetObject();
}
}
if (aoi.IsCollectionObject())
{
value = BuildCollectionInstance((CollectionObjectInfo)aoi);
// Manage a specific case of Set
/*
* if (typeof(Java.Util.Set).IsAssignableFrom(field.GetType()) && typeof(ICollection).IsAssignableFrom(value.GetType()))
* {
* Java.Util.Set s = new Java.Util.HashSet();
* s.AddAll((System.Collections.ICollection)value);
* value = s;
* }*/
}
if (aoi.IsArrayObject())
{
value = BuildArrayInstance((ArrayObjectInfo)aoi);
}
if (aoi.IsMapObject())
{
value = BuildMapInstance((MapObjectInfo)aoi);
}
if (aoi.IsEnumObject())
{
value = BuildEnumInstance((EnumNativeObjectInfo)aoi, field.FieldType);
}
}
else
{
if (aoi.IsNonNativeObject())
{
if (aoi.IsDeletedObject())
{
if (NeoDatis.Odb.OdbConfiguration.DisplayWarnings())
{
IError warning = NeoDatisError.AttributeReferencesADeletedObject
.AddParameter(objectInfo.GetClassInfo().GetFullClassName())
.AddParameter(objectInfo.GetOid()).AddParameter(field.Name);
DLogger.Info(warning.ToString());
}
value = null;
}
else
{
value = BuildOneInstance((NonNativeObjectInfo)aoi);
}
}
}
if (value != null)
{
if (OdbConfiguration.IsDebugEnabled(LogIdDebug))
{
DLogger.Debug("Setting field " + field.Name + "(" + field.GetType().FullName + ") to " + value + " / " + value.GetType().FullName);
}
try
{
field.SetValue(o, value);
}
catch (System.Exception e)
{
throw new ODBRuntimeException(NeoDatisError.InstanceBuilderWrongObjectContainerType
.AddParameter(objectInfo.GetClassInfo().GetFullClassName())
.AddParameter(value.GetType().FullName).AddParameter(field.GetType().FullName), e);
}
}
}
}
if (o != null && !OdbClassUtil.GetFullName(o.GetType()).Equals(objectInfo.GetClassInfo().GetFullClassName()))
{
new ODBRuntimeException(NeoDatisError.InstanceBuilderWrongObjectType
.AddParameter(objectInfo.GetClassInfo().GetFullClassName())
.AddParameter(o.GetType().FullName));
}
if (hashCodeIsOk || initialHashCode != o.GetHashCode())
{
// Bug (sf bug id=1875544 )detected by glsender
// This can happen when an object has redefined its own hashcode
// method and depends on the field values
// Then, we have to remove object from the cache and re-insert to
// correct map hash code
cache.RemoveObjectWithOid(objectInfo.GetOid());
// re-Adds instance in the cache
cache.AddObject(objectInfo.GetOid(), o, objectInfo.GetHeader());
}
if (triggerManager != null)
{
triggerManager.ManageSelectTriggerAfter(objectInfo.GetClassInfo().GetFullClassName
(), objectInfo, objectInfo.GetOid());
}
if (OdbConfiguration.ReconnectObjectsToSession())
{
ICrossSessionCache crossSessionCache = CacheFactory.GetCrossSessionCache(engine.GetBaseIdentification().GetIdentification());
crossSessionCache.AddObject(o, objectInfo.GetOid());
}
return(o);
}
