public override void Enlist(object distributedTransaction)
{
ITransaction transaction = (ITransaction)distributedTransaction;
if (transaction == null)
{
Future future = new Future(Service.TransactionEnlist, (int)DtpFlags.SQL_TP_UNENLIST, null);
object result = null;
try
{
futures.Add(future);
future.SendRequest(Session);
result = future.GetNextResult(Session, futures);
}
finally
{
futures.Remove(future);
}
if (result != null && result is object[])
{
object[] results = (object[])result;
errors.AddServerError((string)results[1], null, (string)results[2]);
Diagnostics.HandleErrors(CLI.ReturnCode.SQL_ERROR, this);
}
}
else
{
byte[] whereabouts = GetServerDtcWhereabouts();
DTC.ITransactionExport export = DTC.GetTransactionExport(transaction, whereabouts);
byte[] cookie = DTC.GetTransactionCookie(transaction, export);
string cookie_encoded = Encode(cookie);
ManagedCommand cmd = new ManagedCommand(this);
cmd.SetParameters(null);
try
{
cmd.Execute("select mts_enlist_transaction('" + cookie_encoded + "')");
if (cmd.Fetch())
{
autocommit = false;
}
}
finally
{
cmd.CloseCursor(true);
cmd.Dispose();
}
}
}
public override void EndTransaction(bool commit)
{
Debug.WriteLineIf(CLI.FnTrace.Enabled, String.Format(
"ManagedConnection.EndTransaction ({0})", commit));
CLI.CompletionType completion = commit ?
CLI.CompletionType.SQL_COMMIT :
CLI.CompletionType.SQL_ROLLBACK;
Future future = new Future(
Service.Transaction, (int)completion, null);
object result = null;
try
{
futures.Add(future);
future.SendRequest(Session);
result = future.GetNextResult(Session, futures);
Debug.WriteLineIf(CLI.FnTrace.Enabled, String.Format(
"ManagedConnection.EndTransaction ({0}) success", commit));
}
finally
{
futures.Remove(future);
}
if (result is object[])
{
Debug.WriteLineIf(CLI.FnTrace.Enabled, String.Format(
"ManagedConnection.EndTransaction ({0}) error", commit));
object[] results = (object[])result;
errors.AddServerError((string)results[1], null, (string)results[2]);
Diagnostics.HandleErrors(CLI.ReturnCode.SQL_ERROR, this);
}
autocommit = true;
isolation = CLI.IsolationLevel.SQL_TXN_READ_COMMITED;
Debug.WriteLineIf(CLI.FnTrace.Enabled, String.Format(
"ManagedConnection.EndTransaction ({0}) done", commit));
}
private CLI.ReturnCode ProcessResult(bool needEvl)
{
Debug.WriteLineIf(CLI.FnTrace.Enabled, "ManagedCommand.ProcessResult (" + needEvl + ")");
bool warningPending = false;
for (;;)
{
object result = pendingFuture.GetNextResult(connection.Session, connection.futures);
if (result is object[])
{
object[] results = (object[])result;
AnswerTag tag = (AnswerTag)results[0];
Debug.WriteLineIf(Switch.Enabled, "QA: " + tag);
switch (tag)
{
case AnswerTag.QA_LOGIN:
connection.currentCatalog = (string)results[1];
break;
case AnswerTag.QA_COMPILED:
{
object[] compilation = (object[])results[1];
queryType = (QueryType)compilation[1];
SetColumnMetaData(compilation[0], (int)compilation[4]);
if (!needEvl)
{
return(warningPending ? CLI.ReturnCode.SQL_SUCCESS_WITH_INFO : CLI.ReturnCode.SQL_SUCCESS);
}
break;
}
case AnswerTag.QA_ROWS_AFFECTED:
affectedRows += (int)results[1];
isLastRow = true;
if (queryType == QueryType.QT_PROC_CALL)
{
return(CLI.ReturnCode.SQL_NO_DATA);
}
isLastResult = true;
if (queryType == QueryType.QT_SELECT)
{
return(CLI.ReturnCode.SQL_NO_DATA);
}
return(warningPending ? CLI.ReturnCode.SQL_SUCCESS_WITH_INFO : CLI.ReturnCode.SQL_SUCCESS);
case AnswerTag.QA_ROW_LAST_IN_BATCH:
isLastInBatch = true;
goto case AnswerTag.QA_ROW;
case AnswerTag.QA_ROW:
prefetchRow = results;
isLastRow = false;
return(warningPending ? CLI.ReturnCode.SQL_SUCCESS_WITH_INFO : CLI.ReturnCode.SQL_SUCCESS);
case AnswerTag.QA_PROC_RETURN:
SetParameterValues(results);
isLastResult = isLastRow = true;
return(warningPending ? CLI.ReturnCode.SQL_SUCCESS_WITH_INFO : CLI.ReturnCode.SQL_SUCCESS);
case AnswerTag.QA_NEED_DATA:
needDataParameter = (int)results[1];
return(CLI.ReturnCode.SQL_NEED_DATA);
case AnswerTag.QA_ERROR:
isLastResult = isLastRow = true;
errors.AddServerError((string)results[1], null, (string)results[2]);
return(CLI.ReturnCode.SQL_ERROR);
case AnswerTag.QA_WARNING:
errors.AddServerWarning((string)results[1], null, (string)results[2]);
warningPending = true;
break;
}
}
else
{
/*
* CLI.ReturnCode rc = (CLI.ReturnCode) result;
* if (rc == CLI.ReturnCode.SQL_NO_DATA)
* return rc;
*/
isLastRow = true;
// proc call. Result set ends, proc not returned.
if (queryType == QueryType.QT_PROC_CALL)
{
return(CLI.ReturnCode.SQL_NO_DATA);
}
isLastResult = true;
if (queryType == QueryType.QT_SELECT)
{
return(CLI.ReturnCode.SQL_NO_DATA);
}
return(CLI.ReturnCode.SQL_SUCCESS);
}
}
}
public override void Enlist (object distributedTransaction)
{
ITransaction transaction = (ITransaction) distributedTransaction;
if (transaction == null)
{
Future future = new Future (Service.TransactionEnlist, (int) DtpFlags.SQL_TP_UNENLIST, null);
object result = null;
try
{
futures.Add (future);
future.SendRequest (Session);
result = future.GetNextResult (Session, futures);
}
finally
{
futures.Remove (future);
}
if (result != null && result is object[])
{
object[] results = (object[]) result;
errors.AddServerError ((string) results[1], null, (string) results[2]);
Diagnostics.HandleErrors (CLI.ReturnCode.SQL_ERROR, this);
}
}
else
{
byte[] whereabouts = GetServerDtcWhereabouts ();
DTC.ITransactionExport export = DTC.GetTransactionExport (transaction, whereabouts);
byte[] cookie = DTC.GetTransactionCookie (transaction, export);
string cookie_encoded = Encode (cookie);
ManagedCommand cmd = new ManagedCommand (this);
cmd.SetParameters (null);
try
{
cmd.Execute ("select mts_enlist_transaction('" + cookie_encoded + "')");
if (cmd.Fetch ())
{
autocommit = false;
}
}
finally
{
cmd.CloseCursor (true);
cmd.Dispose ();
}
}
}
public override void EndTransaction (bool commit)
{
Debug.WriteLineIf (CLI.FnTrace.Enabled, String.Format (
"ManagedConnection.EndTransaction ({0})", commit));
CLI.CompletionType completion = commit ?
CLI.CompletionType.SQL_COMMIT :
CLI.CompletionType.SQL_ROLLBACK;
Future future = new Future (
Service.Transaction, (int) completion, null);
object result = null;
try
{
futures.Add (future);
future.SendRequest (Session);
result = future.GetNextResult (Session, futures);
Debug.WriteLineIf (CLI.FnTrace.Enabled, String.Format (
"ManagedConnection.EndTransaction ({0}) success", commit));
}
finally
{
futures.Remove (future);
}
if (result is object[])
{
Debug.WriteLineIf (CLI.FnTrace.Enabled, String.Format (
"ManagedConnection.EndTransaction ({0}) error", commit));
object[] results = (object[]) result;
errors.AddServerError ((string) results[1], null, (string) results[2]);
Diagnostics.HandleErrors (CLI.ReturnCode.SQL_ERROR, this);
}
autocommit = true;
isolation = CLI.IsolationLevel.SQL_TXN_READ_COMMITED;
Debug.WriteLineIf (CLI.FnTrace.Enabled, String.Format (
"ManagedConnection.EndTransaction ({0}) done", commit));
}
