_dataTypesByTypeName = new HashMap<String, DataTypeInfo>();
_mediator = new ControlMediator();
final ISQLConnection conn = session.getSQLConnection();
_columnsCmb = new ColumnsComboBox(conn, ti);
_dataTypesCmb = new DataTypesComboBox(conn);
for (int i = 0, limit = _dataTypesCmb.getItemCount(); i < limit; ++i)
{
DataTypeInfo dti = _dataTypesCmb.getDataTypeAt(i);