/// <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();
}
}
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();
}
}
/// <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);
/// <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();
}
}
/// <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);
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();
}
}
