internal void Commit(SimpleTransaction tx)
{
tx.MakeInactive();
var parent = tx.parent;
// Unlock all resources held by this transaction
if (parent != null)
{
parent.MakeActive();
}
_currentTransaction[tx.provider] = parent;
// Fire Events and unlock Store only when Top-most Tx commits
if (parent == null)
{
SimpleLockManager.UnlockAll(tx);
tx.FireCompleted();
}
}
internal void Rollback(SimpleTransaction tx)
{
tx.MakeInactive();
var parent = tx.parent;
// Unlock all resources held by this transaction
if (parent != null)
{
parent.MakeActive();
}
_currentTransaction[tx.provider] = parent;
// Unlock Store only when Top-most Tx Completes
if (parent == null)
{
SimpleLockManager.UnlockAll(tx);
}
// In case of Rollback we fire off event even for nested Tx
tx.FireCompleted();
}
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;
}
