internal virtual NodeValueCommmand CreateSetValueCommand(
VanillaXmlModelProvider provider, NodeValueChange change)
{
return new NodeValueCommmand(change);
}
internal SimpleTransaction(
VanillaXmlModelProvider provider, string name, SimpleTransaction parent, SimpleTransactionManager mgr, object userState)
{
this.provider = provider;
this.name = name;
this.parent = parent;
manager = mgr;
DesignerTransaction = true;
resources = new Dictionary<XDocument, SimpleTransactionLogger>();
status = XmlTransactionStatus.Active;
_userState = userState;
}
internal virtual RemoveNodeCommand CreateRemoveNodeCommand(
VanillaXmlModelProvider provider, RemoveNodeChange change)
{
return new RemoveNodeCommand(change);
}
internal virtual AddNodeCommand CreateAddNodeCommand(
VanillaXmlModelProvider provider, AddNodeChange change)
{
return new AddNodeCommand(change);
}
internal void SetCurrentTransaction(VanillaXmlModelProvider provider, SimpleTransaction tx)
{
if (_currentTransaction.ContainsKey(provider))
{
_currentTransaction[provider] = tx;
}
else
{
_currentTransaction.Add(provider, tx);
}
}
internal SimpleTransaction GetCurrentTransaction(VanillaXmlModelProvider provider)
{
SimpleTransaction current = null;
if (_currentTransaction.ContainsKey(provider))
{
current = _currentTransaction[provider];
}
return current;
}
internal SimpleTransaction BeginTransaction(
VanillaXmlModelProvider provider, string name, SimpleTransaction parent, object userState)
{
var tx = new SimpleTransaction(provider, name, parent, this, userState);
if (parent != null)
{
// Unsubscribe events on parent transaction
parent.MakeInactive();
// Create SimpleTransactionLogger for each document in VanillaXmlModelProvider
foreach (var model in provider.OpenXmlModels)
{
tx.EnlistResource(model as SimpleXmlModel);
}
}
else
{
// This is the top level transaction, so acquire all locks to avoid deadlocks
lock (this)
{
foreach (var model in provider.OpenXmlModels)
{
tx.LockForWrite(model as SimpleXmlModel);
}
}
}
// Make this the current Active transaction
SetCurrentTransaction(provider, tx);
tx.MakeActive();
return tx;
}
