internal OleDbConnectionInternal(OleDbConnectionString constr, OleDbConnection connection) : base()
{
Debug.Assert((null != constr) && !constr.IsEmpty, "empty connectionstring");
ConnectionString = constr;
if (constr.PossiblePrompt && !System.Environment.UserInteractive)
{
throw ODB.PossiblePromptNotUserInteractive();
}
try
{
// this is the native DataLinks object which pools the native datasource/session
OleDbServicesWrapper wrapper = OleDbConnectionInternal.GetObjectPool();
_datasrcwrp = new DataSourceWrapper();
// DataLinks wrapper will call IDataInitialize::GetDataSource to create the DataSource
// uses constr.ActualConnectionString, no InfoMessageEvent checking
wrapper.GetDataSource(constr, ref _datasrcwrp);
Debug.Assert(!_datasrcwrp.IsInvalid, "bad DataSource");
// initialization is delayed because of OleDbConnectionStringBuilder only wants
// pre-Initialize IDBPropertyInfo & IDBProperties on the data source
if (null != connection)
{
_sessionwrp = new SessionWrapper();
// From the DataSource object, will call IDBInitialize.Initialize & IDBCreateSession.CreateSession
// We always need both called so we use a single call for a single DangerousAddRef/DangerousRelease pair.
OleDbHResult hr = _datasrcwrp.InitializeAndCreateSession(constr, ref _sessionwrp);
// process the HResult here instead of from the SafeHandle because the possibility
// of an InfoMessageEvent.
if ((0 <= hr) && !_sessionwrp.IsInvalid)
{ // process infonessage events
OleDbConnection.ProcessResults(hr, connection, connection);
}
else
{
Exception e = OleDbConnection.ProcessResults(hr, null, null);
Debug.Assert(null != e, "CreateSessionError");
throw e;
}
Debug.Assert(!_sessionwrp.IsInvalid, "bad Session");
}
}
catch
{
if (null != _sessionwrp)
{
_sessionwrp.Dispose();
_sessionwrp = null;
}
if (null != _datasrcwrp)
{
_datasrcwrp.Dispose();
_datasrcwrp = null;
}
throw;
}
}
