public override object GetObjectFromOid(NeoDatis.Odb.OID oid)
{
if (oid == null)
{
throw new NeoDatis.Odb.ODBRuntimeException(NeoDatis.Odb.Core.NeoDatisError.CanNotGetObjectFromNullOid
);
}
NeoDatis.Odb.Core.Layers.Layer2.Meta.NonNativeObjectInfo nnoi = GetObjectReader()
.ReadNonNativeObjectInfoFromOid(null, oid, true, true);
if (nnoi.IsDeletedObject())
{
throw new NeoDatis.Odb.ODBRuntimeException(NeoDatis.Odb.Core.NeoDatisError.ObjectIsMarkedAsDeletedForOid
.AddParameter(oid));
}
object o = nnoi.GetObject();
if (o == null)
{
o = GetObjectReader().GetInstanceBuilder().BuildOneInstance(nnoi);
}
NeoDatis.Odb.Core.Transaction.ISession lsession = GetSession(true);
// Here oid can be different from nnoi.getOid(). This is the case when
// the oid is an external oid. That`s why we use
// nnoi.getOid() to put in the cache
lsession.GetCache().AddObject(nnoi.GetOid(), o, nnoi.GetHeader());
lsession.GetTmpCache().ClearObjectInfos();
return(o);
}
/// <summary>
/// Checks if something in the Collection has changed, if yes, stores the
/// change
/// </summary>
/// <param name="nnoi1">
/// The first Object meta representation (nnoi =
/// NonNativeObjectInfo)
/// </param>
/// <param name="nnoi2">The second object meta representation</param>
/// <param name="fieldIndex">The field index that this collection represents</param>
/// <param name="coi1">
/// The Meta representation of the collection 1 (coi =
/// CollectionObjectInfo)
/// </param>
/// <param name="coi2">The Meta representation of the collection 2</param>
/// <param name="objectRecursionLevel"></param>
/// <returns>true if 2 collection representation are different</returns>
private bool ManageCollectionChanges(NonNativeObjectInfo
nnoi1, NonNativeObjectInfo nnoi2, int fieldId
, CollectionObjectInfo coi1, CollectionObjectInfo
coi2, int objectRecursionLevel)
{
ICollection<AbstractObjectInfo
> collection1 = coi1.GetCollection();
ICollection<AbstractObjectInfo
> collection2 = coi2.GetCollection();
if (collection1.Count != collection2.Count)
{
System.Text.StringBuilder buffer = new System.Text.StringBuilder();
buffer.Append("Collection size has changed oldsize=").Append(collection1.Count).Append
("/newsize=").Append(collection2.Count);
StoreChangedObject(nnoi1, nnoi2, fieldId, coi1, coi2, buffer.ToString(), objectRecursionLevel
);
return true;
}
System.Collections.IEnumerator iterator1 = collection1.GetEnumerator();
System.Collections.IEnumerator iterator2 = collection2.GetEnumerator();
AbstractObjectInfo value1 = null;
AbstractObjectInfo value2 = null;
int index = 0;
while (iterator1.MoveNext())
{
iterator2.MoveNext();
value1 = (AbstractObjectInfo)iterator1.Current;
value2 = (AbstractObjectInfo)iterator2.Current;
bool hasChanged = this.HasChanged(value1, value2, objectRecursionLevel);
if (hasChanged)
{
// We consider collection has changed only if object are
// different, If objects are the same instance, but something in
// the object has changed, then the collection has not
// changed,only the object
if (value1.IsNonNativeObject() && value2.IsNonNativeObject())
{
NonNativeObjectInfo nnoia = (NonNativeObjectInfo
)value1;
NonNativeObjectInfo nnoib = (NonNativeObjectInfo
)value2;
if (nnoia.GetOid() != null && !nnoia.GetOid().Equals(nnoi2.GetOid()))
{
// Objects are not the same instance -> the collection
// has changed
StoreChangedObject(nnoi1, nnoi2, fieldId, value1, value2, "List element index " +
index + " has changed", objectRecursionLevel);
}
}
else
{
supportInPlaceUpdate = false;
nbChanges++;
}
//storeChangedObject(nnoi1, nnoi2, fieldId, value1, value2, "List element index " + index + " has changed", objectRecursionLevel);
return true;
}
index++;
}
return false;
}
private void StoreChangedObject(NonNativeObjectInfo
aoi1, NonNativeObjectInfo aoi2, int fieldId
, AbstractObjectInfo oldValue, AbstractObjectInfo
newValue, string message, int objectRecursionLevel)
{
if (aoi1 != null && aoi2 != null)
{
if (aoi1.GetOid() != null && aoi1.GetOid().Equals(aoi2.GetOid()))
{
changedObjectMetaRepresentations.Add(aoi2);
changes.Add(new ChangedObjectInfo(aoi1
.GetClassInfo(), aoi2.GetClassInfo(), fieldId, oldValue, newValue, message, objectRecursionLevel
));
// also the max recursion level
if (objectRecursionLevel > maxObjectRecursionLevel)
{
maxObjectRecursionLevel = objectRecursionLevel;
}
nbChanges++;
}
else
{
newObjects.Add(aoi2.GetObject());
string fieldName = aoi1.GetClassInfo().GetAttributeInfoFromId(fieldId).GetName();
// keep track of the position where the reference must be
// updated - use aoi1 to get position, because aoi2 do not have position defined yet
long positionToUpdateReference = aoi1.GetAttributeDefinitionPosition(fieldId);
StoreNewObjectReference(positionToUpdateReference, aoi2, objectRecursionLevel, fieldName
);
}
}
else
{
//newObjectMetaRepresentations.add(aoi2);
NeoDatis.Tool.DLogger.Info("Non native object with null object");
}
}
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;
}
