/// <summary>
/// The surrogates created as Holders of IStateObjects must be persisted.
/// </summary>
internal void HandleSurrogateHolders()
{
//First we need to go through the properties and Adopt any Unattached object.
foreach (StateObjectSurrogate obj in _orphanHolders)
{
var surrogateToAdoptSurrogate = _stateManager.surrogateManager.GetSurrogateFirstReference(obj);
var objValue = obj.Value as IStateObject;
AdoptionInformation.StaticAdopt(surrogateToAdoptSurrogate, objValue);
foreach (var dependant in _stateManager.GetDependentItemsInCache(objValue.UniqueID))
{
var pointer = dependant.Value as StateObjectPointer;
//If the Target of the opinter is also Unattached.
if (pointer != null && !(pointer is UpgradeHelpers.WebMap.Server.StateObjectPointerReferenceSuperValue))
{
AdoptionInformation.StaticAdopt(pointer, pointer.Target);
}
StateManager.Current.StorageManager.SaveObject(dependant.Value);
}
}
//Once all the adoptions accured then we can procceed and store those adopted values.
foreach (StateObjectSurrogate obj in _orphanHolders)
{
var surrogateToAdoptSurrogate = _stateManager.surrogateManager.GetSurrogateFirstReference(obj);
var objValue = obj.Value as IStateObject;
StateManager.Current.StorageManager.SaveObject(objValue);
foreach (var dependant in StateManager.Current.GetDependentItemsInCache(objValue.UniqueID))
{
StateManager.Current.StorageManager.SaveObject(dependant.Value);
}
}
_orphanHolders.Clear();
}
private bool TransferValueToReference(string branchRemoved, ReferencesTable referencesTable, IStateObject elementToAdoptObj = null, bool isDispose = false, IFormBaseViewModel formBaseViewModel = null)
{
if (isDispose && referencesTable.IsReferencedObjectAnIDisposableDependencyControl)
{
return(false);
}
//If the elementToAdopt was not sent as a parameter let's calculate it.
if (elementToAdoptObj == null)
{
elementToAdoptObj = referencesTable.ReferencedObject;
}
string oldParentUniqueID = elementToAdoptObj.UniqueID;
//Entire windows won't be preserved.
if (elementToAdoptObj is IViewModel)
{
return(false);
}
//Let's get the reference candidate for the adoption.
var reference = GetReferenceValidForAdoption(referencesTable, false);
if (reference == null)
{
return(false);
}
var candidate = CalculateCandidateForAdoption(reference);
//The cadidates parent was already removed...Ciao
if (candidate == null)
{
return(false);
}
bool doNotRegisterIDSwitch = true;
if (formBaseViewModel == null)
{
formBaseViewModel = ViewManager.Instance.GetTopLevelObject(elementToAdoptObj) as IFormBaseViewModel;
}
if (formBaseViewModel != null)
{
doNotRegisterIDSwitch = formBaseViewModel.IsDisposing;
}
if (!(elementToAdoptObj is IDisposableDependencyControl) || (!isDispose && !doNotRegisterIDSwitch))
{
//The element won't belong to the parent anymore.
IStateObject elementsToBeAdopted = _stateManager.DettachObject(elementToAdoptObj, !doNotRegisterIDSwitch);
//We need to promote the object and attach it to the first candidate.
AdoptionInformation.StaticAdopt(candidate, elementsToBeAdopted);
////Let's update all the references
UpdateReferencesTables(oldParentUniqueID, elementToAdoptObj.UniqueID);
//Only foreign references allowed
referencesTable.RemoveReference(reference);
//We move the element to a substitute parent.
referencesTable.AttachedToParent = false;
//We had a succesfull adoption :)
return(true);
}
return(false);
}
private void ProcessIfOrphan()
{
if (!StateManager.AllBranchesAttached(_current.UniqueID))
{
//If we enter here we are Orphans :(
//We asumme we got here because we are inside a surrogate and
//that means that there is an StateObjectSurrogate associated with the parentObject
if (parentCandidate == null)
{
var typeName = TypeCacheUtils.GetOriginalTypeName(_current.GetType());
throw new NotSupportedException("The wrapped stated of type " + typeName + "object with ID" + _current.UniqueID + " does not have a valid parent reference");
}
var parentSurrogate = StateManager.Current.surrogateManager.GetSurrogateFor(parentCandidate, generateIfNotFound: false);
if (parentSurrogate == null)
{
var typeName = TypeCacheUtils.GetOriginalTypeName(_current.GetType());
throw new NotSupportedException("The wrapped stated of type " + typeName + "object with ID" + _current.UniqueID + " does not have a valid parent SURROGATE reference");
}
AdoptionInformation.StaticAdopt(parentSurrogate, _current);
}
}
public static void Serialize(object instance, BinaryWriter binaryWriter, MemoryStream ms, ISurrogateContext context)
{
var sortedList = instance as System.Collections.SortedList;
binaryWriter.Write(sortedList.Count);
foreach (System.Collections.DictionaryEntry item in sortedList)
{
var asStateObject = item.Key as IStateObject;
//Flag to determine if value is stateobject
binaryWriter.Write(asStateObject != null);
//Save Key
if (asStateObject != null)
{
if (!StateManager.AllBranchesAttached(asStateObject.UniqueID))
{
var sortedListSurrogate = StateManager.Current.surrogateManager.GetSurrogateFor(sortedList, generateIfNotFound: false);
AdoptionInformation.StaticAdopt(sortedListSurrogate, asStateObject);
}
//TODO this line has to be removed from here when the SaveObject will be generalized
StateManager.Current.StorageManager.SaveObject(asStateObject);
foreach (var pair in StateManager.Current.GetDependentItemsInCache(asStateObject.UniqueID))
{
StateManager.Current.StorageManager.SaveObject(pair.Value);
}
binaryWriter.Write(asStateObject.UniqueID);
}
else
{
binaryWriter.Write(item.Key.ToString());
}
//Save Value
asStateObject = item.Value as IStateObject;
binaryWriter.Write(asStateObject != null);
//Save Key
if (asStateObject != null)
{
if (!StateManager.AllBranchesAttached(asStateObject.UniqueID))
{
var sortedListSurrogate = StateManager.Current.surrogateManager.GetSurrogateFor(sortedList, generateIfNotFound: false);
AdoptionInformation.StaticAdopt(sortedListSurrogate, asStateObject);
}
//TODO this line has to be removed from here when the SaveObject will be generalized
StateManager.Current.StorageManager.SaveObject(asStateObject);
foreach (var pair in StateManager.Current.GetDependentItemsInCache(asStateObject.UniqueID))
{
StateManager.Current.StorageManager.SaveObject(pair.Value);
}
binaryWriter.Write(asStateObject.UniqueID);
}
else
{
binaryWriter.Write(item.Key.ToString());
}
}
}
