public virtual IEnumerable <PersistAction> GetPersistSequence(EntityChangeRegistry registry)
{
// Delete
foreach (var action in GetDeleteSequence(GetRemovedStates(registry)))
{
yield return(action);
}
// Update
foreach (var state in registry.GetItems(PersistenceState.Modified))
{
if (state.IsNotAvailableOrMarkedAsRemoved)
{
continue;
}
yield return(new PersistAction(Node, state, PersistActionKind.Update));
state.DifferentialTuple.Merge();
}
// Insert
foreach (var action in GetInsertSequence(GetCreatedStates(registry)))
{
yield return(action);
}
// Commit state differences, if any
foreach (var state in GetCreatedStates(registry))
{
state.CommitDifference();
}
}
public RemapContext(EntityChangeRegistry registry)
{
ArgumentValidator.EnsureArgumentNotNull(registry, "registry");
this.registry = registry;
keyMap = new Dictionary <Key, Key>();
readOnlyKeyMap = new ReadOnlyDictionary <Key, Key>(keyMap, false);
}
/// <summary>
/// Remap temporary (local) keys to real (will be saved to storage) keys.
/// </summary>
/// <param name="registry">Registry that contains changed <see cref="EntityState">states of entity.</see></param>
/// <returns>Mapping temporary keys to real keys.</returns>
public KeyMapping Remap(EntityChangeRegistry registry)
{
var context = new RemapContext(registry);
RemapEntityKeys(context);
RemapReferencesToEntities(context);
Session.ReferenceFieldsChangesRegistry.Clear();
return(context.KeyMapping);
}
public void Process(EntityChangeRegistry registry)
{
activeRegistry = registry;
PinAll();
PinnedItems = new EntityChangeRegistry(Session);
PersistableItems = new EntityChangeRegistry(Session);
ProcessRegistry(PersistenceState.New);
ProcessRegistry(PersistenceState.Modified);
ProcessRegistry(PersistenceState.Removed);
ClearPinned();
activeRegistry = null;
}
public void Reset()
{
PinnedItems = null;
PersistableItems = null;
}
protected static IEnumerable <EntityState> GetRemovedStates(EntityChangeRegistry registry)
{
return(registry
.GetItems(PersistenceState.Removed)
.Except(registry.GetItems(PersistenceState.New)));
}
protected static IEnumerable <EntityState> GetCreatedStates(EntityChangeRegistry registry)
{
return(registry
.GetItems(PersistenceState.New)
.Where(state => !state.IsNotAvailableOrMarkedAsRemoved));
}
