internal OleDbTransaction(OleDbConnection connection, OleDbTransaction transaction, IsolationLevel isolevel)
{
OleDbConnection.VerifyExecutePermission();
_parentConnection = connection;
_parentTransaction = transaction;
switch (isolevel)
{
case IsolationLevel.Unspecified: // OLE DB doesn't support this isolevel on local transactions
isolevel = IsolationLevel.ReadCommitted;
break;
case IsolationLevel.Chaos:
case IsolationLevel.ReadUncommitted:
case IsolationLevel.ReadCommitted:
case IsolationLevel.RepeatableRead:
case IsolationLevel.Serializable:
case IsolationLevel.Snapshot:
break;
default:
throw ADP.InvalidIsolationLevel(isolevel); // MDAC 74269
}
_isolationLevel = isolevel;
}
override public void EnlistTransaction(SysTx.Transaction transaction) // MDAC 78997
{
OleDbConnection.VerifyExecutePermission();
OleDbConnection outerConnection = Connection;
if (null != LocalTransaction)
{
throw ADP.LocalTransactionPresent();
}
EnlistTransactionInternal(transaction);
}
internal void EnlistTransactionInternal(SysTx.Transaction transaction)
{
OleDbConnection.VerifyExecutePermission();
SysTx.IDtcTransaction oleTxTransaction = ADP.GetOletxTransaction(transaction);
IntPtr hscp;
Bid.ScopeEnter(out hscp, "<oledb.ITransactionJoin.JoinTransaction|API|OLEDB> %d#\n", ObjectID);
try {
using (ITransactionJoinWrapper transactionJoin = ITransactionJoin()) {
if (null == transactionJoin.Value)
{
throw ODB.TransactionsNotSupported(Provider, (Exception)null);
}
transactionJoin.Value.JoinTransaction(oleTxTransaction, (int)IsolationLevel.Unspecified, 0, IntPtr.Zero);
_unEnlistDuringDeactivate = (null != transaction);
}
}
finally {
Bid.ScopeLeave(ref hscp);
}
EnlistedTransaction = transaction;
}
