Example #1
0
        /// <summary>
        /// Execute the current transaction with the reason specified to obtain
        /// the next user command.
        /// </summary>
        private void GetNextUserCommand(KmodTransactionReason reason)
        {
            Debug.Assert(IsTransactionExecuting());
            Debug.Assert(IsThreadReadyForUserCommand());

            // Remember the previous command posted by the user.
            KmodThreadCommand prevCmd = m_curCommand;

            try
            {
                // Call Run(). Note that the transaction may be cancelled
                // or finished during that time.
                m_curTransaction.Run(reason);

                // If the transaction is still executing and the user hasn't
                // posted another command or if the transaction has explicitly
                // been marked finished, the transaction is completed.
                if ((IsTransactionExecuting() && (m_curCommand == null || m_curCommand == prevCmd)) ||
                    (m_curTransaction != null && m_curTransaction.Status == KmodTransactionStatus.Finished))
                {
                    EndCurrentTransaction();
                    RequestRun();
                }
            }

            // The transaction has failed. Kill everything and request a run.
            catch (Exception ex)
            {
                Killall(ex);
                RequestRun();
            }
        }
Example #2
0
        public override void Run(KmodTransactionReason reason)
        {
            if (reason == KmodTransactionReason.Start)
            {
                PostCommand(new K3p.k3p_beg_session(), false);
                for (int i = 0; i < InCmdArray.Length - 1; i++)
                {
                    PostCommand(InCmdArray[i], false);
                }
                PostCommand(InCmdWithRes, true);
            }

            else if (reason == KmodTransactionReason.CommandResult)
            {
                // Important: let Slurp() throw.
                GetSlurper().Slurp(InCmdWithRes, out OutDesc, out OutMsg);

                // Post the end session command.
                PostCommand(new K3p.k3p_end_session(), false);

                // Mark the query as finished to allow the callback to cancel
                // the query without killing KMOD.
                Finish();

                // Call the callback.
                CallCallback();
            }

            else
            {
                OutDesc = Ex.Message;
                CallCallback();
            }
        }
Example #3
0
 /// <summary>
 /// This method is called by the KMOD broker in UI context when the
 /// first command is ready to be sent, when the current command results
 /// are ready and also when an error occurs in KMOD. If no command is posted
 /// during the call to Run(), the KMOD broker will assume that the
 /// transaction is completed.
 ///
 /// IMPORTANT NOTES:
 /// - The Run() method may not reenter the UI.
 /// - All the exceptions raised due to a communication error with KMOD
 ///   must be allowed to escape to the caller. The KMOD broker must
 ///   trap these exceptions to update its status correctly.
 /// </summary>
 /// <param name="reason">Reason why this method is being called</param>
 public abstract void Run(KmodTransactionReason reason);
Example #4
0
        /// <summary>
        /// Execute the current transaction with the reason specified to obtain
        /// the next user command.
        /// </summary>
        private void GetNextUserCommand(KmodTransactionReason reason)
        {
            Debug.Assert(IsTransactionExecuting());
            Debug.Assert(IsThreadReadyForUserCommand());

            // Remember the previous command posted by the user.
            KmodThreadCommand prevCmd = m_curCommand;

            try
            {
                // Call Run(). Note that the transaction may be cancelled
                // or finished during that time.
                m_curTransaction.Run(reason);

                // If the transaction is still executing and the user hasn't
                // posted another command or if the transaction has explicitly
                // been marked finished, the transaction is completed.
                if ((IsTransactionExecuting() && (m_curCommand == null || m_curCommand == prevCmd)) ||
                    (m_curTransaction != null && m_curTransaction.Status == KmodTransactionStatus.Finished))
                {
                    EndCurrentTransaction();
                    RequestRun();
                }
            }

            // The transaction has failed. Kill everything and request a run.
            catch (Exception ex)
            {
                Killall(ex);
                RequestRun();
            }
        }
Example #5
0
 /// <summary>
 /// This method is called by the KMOD broker in UI context when the
 /// first command is ready to be sent, when the current command results
 /// are ready and also when an error occurs in KMOD. If no command is posted
 /// during the call to Run(), the KMOD broker will assume that the
 /// transaction is completed.
 /// 
 /// IMPORTANT NOTES:
 /// - The Run() method may not reenter the UI. 
 /// - All the exceptions raised due to a communication error with KMOD
 ///   must be allowed to escape to the caller. The KMOD broker must
 ///   trap these exceptions to update its status correctly.
 /// </summary>
 /// <param name="reason">Reason why this method is being called</param>
 public abstract void Run(KmodTransactionReason reason);
Example #6
0
        public override void Run(KmodTransactionReason reason)
        {
            if (reason == KmodTransactionReason.Start)
            {
                PostCommand(new K3p.k3p_beg_session(), false);
                for (int i = 0; i < InCmdArray.Length - 1; i++) PostCommand(InCmdArray[i], false);
                PostCommand(InCmdWithRes, true);
            }

            else if (reason == KmodTransactionReason.CommandResult)
            {
                // Important: let Slurp() throw.
                GetSlurper().Slurp(InCmdWithRes, out OutDesc, out OutMsg);

                // Post the end session command.
                PostCommand(new K3p.k3p_end_session(), false);

                // Mark the query as finished to allow the callback to cancel
                // the query without killing KMOD.
                Finish();

                // Call the callback.
                CallCallback();
            }

            else
            {
                OutDesc = Ex.Message;
                CallCallback();
            }
        }