private bool HasChanged(NonNativeObjectInfo nnoi1, NonNativeObjectInfo nnoi2, int objectRecursionLevel)
{
AbstractObjectInfo value1 = null;
AbstractObjectInfo value2 = null;
bool hasChanged = false;
// If the object is already being checked, return false, this second
// check will not affect the check
int n = 0;
alreadyCheckingObjects.TryGetValue(nnoi2, out n);
if (n != 0)
{
return false;
}
// Put the object in the temporary cache
alreadyCheckingObjects[nnoi1] = 1;
alreadyCheckingObjects[nnoi2] = 1;
// Warning ID Start with 1 and not 0
for (int id = 1; id <= nnoi1.GetMaxNbattributes(); id++)
{
value1 = nnoi1.GetAttributeValueFromId(id);
// Gets the value by the attribute id to be sure
// Problem because a new object info may not have the right ids ?
// Check if
// the new oiD is ok.
value2 = nnoi2.GetAttributeValueFromId(id);
if (value2 == null)
{
// this means the object to have attribute id
StoreChangedObject(nnoi1, nnoi2, id, objectRecursionLevel);
hasChanged = true;
continue;
}
if (value1 == null)
{
//throw new ODBRuntimeException("ObjectInfoComparator.hasChanged:attribute with id "+id+" does not exist on "+nnoi2);
// This happens when this object was created with an version of ClassInfo (which has been refactored).
// In this case,we simply tell that in place update is not supported so that the object will be rewritten with
// new metamodel
supportInPlaceUpdate = false;
continue;
}
// If both are null, no effect
if (value1.IsNull() && value2.IsNull())
{
continue;
}
if (value1.IsNull() || value2.IsNull())
{
supportInPlaceUpdate = false;
hasChanged = true;
StoreActionSetAttributetoNull(nnoi1, id, objectRecursionLevel);
continue;
}
if (!ClassAreCompatible(value1, value2))
{
if (value2 is NativeObjectInfo)
{
StoreChangedObject(nnoi1, nnoi2, id, objectRecursionLevel);
StoreChangedAttributeAction(new ChangedNativeAttributeAction
(nnoi1, nnoi2, nnoi1.GetHeader().GetAttributeIdentificationFromId(id), (NativeObjectInfo
)value2, objectRecursionLevel, false, nnoi1.GetClassInfo().GetAttributeInfoFromId
(id).GetName()));
}
if (value2 is ObjectReference)
{
NonNativeObjectInfo nnoi = (NonNativeObjectInfo
)value1;
ObjectReference oref = (ObjectReference
)value2;
if (!nnoi.GetOid().Equals(oref.GetOid()))
{
StoreChangedObject(nnoi1, nnoi2, id, objectRecursionLevel);
int attributeIdThatHasChanged = id;
// this is the exact position where the object reference
// definition is stored
long attributeDefinitionPosition = nnoi2.GetAttributeDefinitionPosition(attributeIdThatHasChanged
);
StoreChangedAttributeAction(new ChangedObjectReferenceAttributeAction
(attributeDefinitionPosition, (ObjectReference
)value2, objectRecursionLevel));
}
else
{
continue;
}
}
hasChanged = true;
continue;
}
if (value1.IsAtomicNativeObject())
{
if (!value1.Equals(value2))
{
// storeChangedObject(nnoi1, nnoi2, id,
// objectRecursionLevel);
StoreChangedAttributeAction(new ChangedNativeAttributeAction
(nnoi1, nnoi2, nnoi1.GetHeader().GetAttributeIdentificationFromId(id), (NativeObjectInfo
)value2, objectRecursionLevel, false, nnoi1.GetClassInfo().GetAttributeInfoFromId
(id).GetName()));
hasChanged = true;
continue;
}
continue;
}
if (value1.IsCollectionObject())
{
CollectionObjectInfo coi1 = (CollectionObjectInfo)value1;
CollectionObjectInfo coi2 = (CollectionObjectInfo)value2;
bool collectionHasChanged = ManageCollectionChanges(nnoi1, nnoi2, id, coi1, coi2, objectRecursionLevel);
hasChanged = hasChanged || collectionHasChanged;
continue;
}
if (value1.IsArrayObject())
{
ArrayObjectInfo aoi1 = (ArrayObjectInfo)value1;
ArrayObjectInfo aoi2 = (ArrayObjectInfo)value2;
bool arrayHasChanged = ManageArrayChanges(nnoi1, nnoi2, id, aoi1, aoi2, objectRecursionLevel
);
hasChanged = hasChanged || arrayHasChanged;
continue;
}
if (value1.IsMapObject())
{
MapObjectInfo moi1 = (MapObjectInfo)value1;
MapObjectInfo moi2 = (MapObjectInfo)value2;
bool mapHasChanged = ManageMapChanges(nnoi1, nnoi2, id, moi1, moi2, objectRecursionLevel
);
hasChanged = hasChanged || mapHasChanged;
continue;
}
if (value1.IsEnumObject())
{
EnumNativeObjectInfo enoi1 = (EnumNativeObjectInfo)value1;
EnumNativeObjectInfo enoi2 = (EnumNativeObjectInfo)value2;
bool enumHasChanged = !enoi1.GetEnumClassInfo().GetId().Equals(enoi2.GetEnumClassInfo
().GetId()) || !enoi1.GetEnumName().Equals(enoi2.GetEnumName());
hasChanged = hasChanged || enumHasChanged;
continue;
}
if (value1.IsNonNativeObject())
{
NonNativeObjectInfo oi1 = (NonNativeObjectInfo)value1;
NonNativeObjectInfo oi2 = (NonNativeObjectInfo)value2;
// If oids are equal, they are the same objects
if (oi1.GetOid() != null && oi1.GetOid().Equals(oi2.GetOid()))
{
hasChanged = HasChanged(value1, value2, objectRecursionLevel + 1) || hasChanged;
}
else
{
// This means that an object reference has changed.
hasChanged = true;
// keep track of the position where the reference must be
// updated
long positionToUpdateReference = nnoi1.GetAttributeDefinitionPosition(id);
StoreNewObjectReference(positionToUpdateReference, oi2, objectRecursionLevel, nnoi1
.GetClassInfo().GetAttributeInfoFromId(id).GetName());
objectRecursionLevel++;
// Value2 may have change too
AddPendingVerification(value2);
}
continue;
}
}
int i1 = (int)alreadyCheckingObjects[nnoi1];
int i2 = (int)alreadyCheckingObjects[nnoi2];
if (i1 != null)
{
i1 = i1 - 1;
}
if (i2 != null)
{
i2 = i2 - 1;
}
if (i1 == 0)
{
alreadyCheckingObjects.Remove(nnoi1);
}
else
{
alreadyCheckingObjects.Add(nnoi1, i1);
}
if (i2 == 0)
{
alreadyCheckingObjects.Remove(nnoi2);
}
else
{
alreadyCheckingObjects.Add(nnoi2, i2);
}
return hasChanged;
}