public void Update(string demoChildData, DemoParent parent)
{
if (Key >= 0)
{
if (parent.Key < 0)
{
throw new Exception($"DemoChild.Update(): It is illegal to add stored DemoChild '{this}'" + Environment.NewLine +
$"to Parent '{parent}', which is not stored.");
}
}
var clone = new DemoChild(this);
var isCancelled = false;
onUpdating(demoChildData, parent, ref isCancelled);
if (isCancelled)
{
return;
}
#if DEBUG
DC.Trace?.Invoke($"Updating DemoChild: {ToTraceString()}");
#endif
var isChangeDetected = false;
if (DemoChildData != demoChildData)
{
DemoChildData = demoChildData;
isChangeDetected = true;
}
if (Parent != parent)
{
Parent.RemoveFromDemoChildren(this);
Parent = parent;
Parent.AddToDemoChildren(this);
isChangeDetected = true;
}
if (isChangeDetected)
{
onUpdated(clone);
if (Key >= 0)
{
DC.Data.DemoChildren.ItemHasChanged(clone, this);
}
else if (DC.Data.IsTransaction)
{
DC.Data.AddTransaction(new TransactionItem(35, TransactionActivityEnum.Update, Key, this, oldItem: clone));
}
HasChanged?.Invoke(clone, this);
}
#if DEBUG
DC.Trace?.Invoke($"Updated DemoChild: {ToTraceString()}");
#endif
}
public DemoChild(string demoChildData, DemoParent parent, bool isStoring = true)
{
Key = StorageExtensions.NoKey;
DemoChildData = demoChildData;
Parent = parent;
#if DEBUG
DC.Trace?.Invoke($"new DemoChild: {ToTraceString()}");
#endif
Parent.AddToDemoChildren(this);
onConstruct();
if (DC.Data?.IsTransaction ?? false)
{
DC.Data.AddTransaction(new TransactionItem(35, TransactionActivityEnum.New, Key, this));
}
if (isStoring)
{
Store();
}
}
