gov.va.medora.mdws.SecureMessageLib.updateMessageThread C# (CSharp) Method

        public ThreadTO updateMessageThread(string pwd, Int32 threadId, string threadSubject, Int32 messageCategory, Int32 threadOplock)
        {
            ThreadTO result = new ThreadTO();

            if (threadId <= 0)
            {
                result.fault = new FaultTO("Must specify a message thread");
            }
            else if (String.IsNullOrEmpty(threadSubject))
            {
                result.fault = new FaultTO("Missing thread subject");
            }
            else if (messageCategory > 0 && !Enum.IsDefined(typeof(gov.va.medora.mdo.domain.sm.enums.MessageCategoryTypeEnum), messageCategory))
            {
                result.fault = new FaultTO("That message category is not defined");
            }

            if (result.fault != null)
            {
                return result;
            }

            try
            {
                gov.va.medora.mdo.domain.sm.Thread thread = new gov.va.medora.mdo.domain.sm.Thread()
                {
                    Id = threadId,
                    Subject = threadSubject,
                    MessageCategoryType = (gov.va.medora.mdo.domain.sm.enums.MessageCategoryTypeEnum)messageCategory,
                    Oplock = threadOplock
                };

                using (MdoOracleConnection cxn = new MdoOracleConnection(new mdo.DataSource() { ConnectionString = pwd }))
                {
                    SecureMessageDao dao = new SecureMessageDao(cxn);
                    gov.va.medora.mdo.domain.sm.Thread dbThread = dao.getMessagesFromThread(threadId);

                    // we don't want to permit apps to change the mail group this way so just keep what's in the database which gets set through the proper channels
                    thread.MailGroup = dbThread.MailGroup;

                    if (dbThread == null || dbThread.Id <= 0 || dbThread.Messages == null || dbThread.Messages.Count <= 0)
                    {
                        throw new Exception("That thread does not exist in the database or appears malformed");
                    }

                    // make sure the thread hasn't been marked as completed
                    foreach(Message m in dbThread.Messages)
                    {
                        if (m.CompletedDate.Year > 1900)
                        {
                            throw new Exception("That message thread has already been completed. Unable to edit.");
                        }
                    }

                    result = new ThreadTO(dao.updateThread(thread));
                }
            }
            catch (Exception exc)
            {
                result.fault = new FaultTO(exc);
            }

            return result;
        }