protected ITransaction BeginTransaction()
{
DebugContract.Requires(Session.Current);
var tx = CurrentTransaction;
if (tx == null)
{
tx = new HypergraphTransaction(_indexManager);
CurrentTransaction = tx;
CurrentTransaction.UpdateProfiler(p => p.NumberOfTransactions.Incr());
}
else
{
// Nested
tx.PushNestedTransaction();
}
return(tx);
}