/// <summary>
/// Returns the value of the specified System Default.
/// For that, the whole System Defaults DB table is read from the server - that's not a problem so long as there's not
/// thousands of system defaults, and this method isn't called too often!
/// </summary>
/// <param name="ASystemDefaultName">The System Default for which the value should be returned.</param>
/// <returns>The value of the System Default, or SYSDEFAULT_NOT_FOUND if the
/// specified System Default was not found.</returns>
public static String GetSystemDefault(String ASystemDefaultName)
{
SSystemDefaultsTable SystemDefaultsDT = null;
SSystemDefaultsRow FoundSystemDefaultsRow;
bool ServerCallSuccessful = false;
TServerBusyHelper.CoordinatedAutoRetryCall("System Defaults", ref ServerCallSuccessful,
delegate
{
SystemDefaultsDT = TRemote.MSysMan.Maintenance.SystemDefaults.WebConnectors.GetSystemDefaults();
ServerCallSuccessful = true;
});
if (!ServerCallSuccessful)
{
TServerBusyHelperGui.ShowLoadingOfDataGotCancelledDialog();
return(SharedConstants.SYSDEFAULT_NOT_FOUND);
}
if (SystemDefaultsDT != null)
{
// Look up the System Default
FoundSystemDefaultsRow = (SSystemDefaultsRow)SystemDefaultsDT.Rows.Find(ASystemDefaultName);
return(FoundSystemDefaultsRow != null ? FoundSystemDefaultsRow.DefaultValue : SharedConstants.SYSDEFAULT_NOT_FOUND);
}
else
{
// 'Back-stop' - should never get here
return(SharedConstants.SYSDEFAULT_NOT_FOUND);
}
}
public static void ProcessEDBAccessLackingCoordinationExc(EDBAccessLackingCoordinationException AException)
{
string Reason = String.Empty;
//Would normally use the code below but cannot due to circular referencing.
//Form MainMenuForm = TFormsList.GFormsList.MainMenuForm;
if (Application.OpenForms.Count != 0) // in the Main Menu Form Test this will be false...
{
Form MainMenuForm = Application.OpenForms[0]; // This gets the first ever opened Form, which is the Main Menu
// Ensure MessageBox is shown on the UI Thread!
if (MainMenuForm.InvokeRequired)
{
MainMenuForm.Invoke((MethodInvoker) delegate
{
TServerBusyHelperGui.ShowDBAccessLackingActionNotPossibleDialog(
AException, out Reason);
});
}
else
{
TServerBusyHelperGui.ShowDBAccessLackingActionNotPossibleDialog(
AException, out Reason);
}
}
else
{
TServerBusyHelperGui.ShowDBAccessLackingActionNotPossibleDialog(
AException, out Reason);
}
if (TLogging.DebugLevel >= TLogging.DEBUGLEVEL_COORDINATED_DB_ACCESS)
{
TLogging.Log(String.Format(Catalog.GetString(
TLogging.LOG_PREFIX_INFO + "The OpenPetra Server was too busy to perform the requested action. (Reason: {0})"),
Reason));
TLogging.Log(AException.StackTrace);
}
}
/// <summary>
/// todoComment
/// </summary>
/// <param name="ASender"></param>
/// <param name="AEventArgs"></param>
public void OnThreadException(object ASender, ThreadExceptionEventArgs AEventArgs)
{
TUnhandledExceptionForm UEDialogue;
string FunctionalityNotImplementedMsg = AppCoreResourcestrings.StrFunctionalityNotAvailableYet;
string Reason = String.Empty;
Exception TheException = ((Exception)AEventArgs.Exception);
// 'Unwrap' the Exception if it is contained inside a TargetInvocationException
if ((TheException is TargetInvocationException) &&
(TheException.InnerException != null))
{
TheException = TheException.InnerException;
}
if (TExceptionHelper.IsExceptionCausedByUnavailableDBConnectionClientSide(TheException))
{
TExceptionHelper.ShowExceptionCausedByUnavailableDBConnectionMessage(false);
return;
}
if (TheException is NotImplementedException)
{
if (TheException.Message != String.Empty)
{
FunctionalityNotImplementedMsg = TheException.Message;
}
TLogging.Log(FunctionalityNotImplementedMsg);
TLogging.Log(TheException.StackTrace);
MessageBox.Show(FunctionalityNotImplementedMsg, AppCoreResourcestrings.StrFunctionalityNotAvailableYetTitle,
MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else if (TDBExceptionHelper.IsTransactionSerialisationException(TheException))
{
TConcurrentServerTransactions.ShowTransactionSerializationExceptionDialog();
}
else if ((TheException is EOPDBException) &&
((TheException.InnerException != null) &&
(TheException.InnerException is EDBAccessLackingCoordinationException)))
{
TExceptionHandlingCommon.ProcessEDBAccessLackingCoordinationExc((EDBAccessLackingCoordinationException)TheException.InnerException);
}
else if (TheException is EDBAccessLackingCoordinationException)
{
TExceptionHandlingCommon.ProcessEDBAccessLackingCoordinationExc((EDBAccessLackingCoordinationException)TheException);
}
else if (TheException is ECachedDataTableLoadingRetryGotCancelledException)
{
if (TLogging.DebugLevel >= TLogging.DEBUGLEVEL_COORDINATED_DB_ACCESS)
{
TLogging.Log(Catalog.GetString(
TLogging.LOG_PREFIX_INFO +
"The OpenPetra Server was too busy to retrieve the data for a Cacheable DataTable and the user cancelled the loading after the retry attempts were exhausted."));
TLogging.Log(TheException.StackTrace);
}
TServerBusyHelperGui.ShowLoadingOfDataGotCancelledDialog();
}
else if (TheException is ESecurityAccessDeniedException)
{
if (ProcessSecurityAccessDeniedException != null)
{
ProcessSecurityAccessDeniedException((ESecurityAccessDeniedException)TheException, ASender.GetType());
}
else
{
MessageBox.Show(
"Unhandled Thread Exception Handler: encountered ESecurityAccessDeniedException, but Delegate " +
"'ProcessSecurityAccessDeniedException' isn't set up - which is a mistake that needs to be corrected." +
Environment.NewLine +
"Message of the ProcessSecurityAccessDeniedException instance:" + Environment.NewLine +
ProcessSecurityAccessDeniedException.ToString());
}
}
else if (TheException is System.OutOfMemoryException)
{
TExceptionHelper.ShowExceptionCausedByOutOfMemoryMessage(false);
TLogging.Log(TheException.ToString());
}
else if ((TheException is InvalidOperationException) &&
(Application.OpenForms.Count == 0) &&
(TheException.Message == "DragDrop registration did not succeed."))
{
// This happens during testing because the apartment model is MTA
// Do nothing because we do not want to show a dialog
}
else
{
// MessageBox.Show(
// "TUnhandledThreadExceptionHandler.OnThreadException Unhandled Exception: \r\n\r\n" + TheException.ToString());
ExceptionHandling.LogException(TheException, "Reported by TUnhandledThreadExceptionHandler.OnThreadException");
UEDialogue = new TUnhandledExceptionForm();
UEDialogue.NonRecoverable = false;
UEDialogue.TheException = TheException;
//Would normally use the code below but cannot due to circular referencing.
//Form MainMenuForm = TFormsList.GFormsList.MainMenuForm;
if (Application.OpenForms.Count != 0) // in the Main Menu Form Test this will be false...
{
Form MainMenuForm = Application.OpenForms[0]; // This gets the first ever opened Form, which is the Main Menu
// Ensure UEDialogue is shown on the UI Thread!
if (MainMenuForm.InvokeRequired)
{
MainMenuForm.Invoke((MethodInvoker) delegate
{
UEDialogue.ShowDialog();
});
}
else
{
UEDialogue.ShowDialog();
}
}
else
{
UEDialogue.ShowDialog();
}
}
}
/// <summary>
/// todoComment
/// </summary>
/// <param name="ASender"></param>
/// <param name="AEventArgs"></param>
public static void UnhandledExceptionHandler(object ASender, UnhandledExceptionEventArgs AEventArgs)
{
TUnhandledExceptionForm UEDialogue;
string FunctionalityNotImplementedMsg = AppCoreResourcestrings.StrFunctionalityNotAvailableYet;
string Reason = String.Empty;
if (((Exception)AEventArgs.ExceptionObject is NotImplementedException))
{
if (((Exception)AEventArgs.ExceptionObject).Message != String.Empty)
{
FunctionalityNotImplementedMsg = ((Exception)AEventArgs.ExceptionObject).Message;
}
TLogging.Log(FunctionalityNotImplementedMsg);
TLogging.Log(((Exception)AEventArgs.ExceptionObject).StackTrace);
MessageBox.Show(FunctionalityNotImplementedMsg, AppCoreResourcestrings.StrFunctionalityNotAvailableYetTitle,
MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else if (((Exception)AEventArgs.ExceptionObject is EDBAccessLackingCoordinationException))
{
//Would normally use the code below but cannot due to circular referencing.
//Form MainMenuForm = TFormsList.GFormsList.MainMenuForm;
Form MainMenuForm = Application.OpenForms[0];
// Ensure MessageBox is shown on the UI Thread!
if (MainMenuForm.InvokeRequired)
{
MainMenuForm.Invoke((MethodInvoker) delegate {
TServerBusyHelperGui.ShowDBAccessLackingActionNotPossibleDialog(
(EDBAccessLackingCoordinationException)AEventArgs.ExceptionObject, out Reason);
});
}
else
{
TServerBusyHelperGui.ShowDBAccessLackingActionNotPossibleDialog(
(EDBAccessLackingCoordinationException)AEventArgs.ExceptionObject, out Reason);
}
if (TLogging.DebugLevel >= TLogging.DEBUGLEVEL_COORDINATED_DB_ACCESS)
{
TLogging.Log(String.Format(Catalog.GetString(
TLogging.LOG_PREFIX_INFO + "The OpenPetra Server was too busy to perform the requested action. (Reason: {0})"),
Reason));
TLogging.Log(((Exception)AEventArgs.ExceptionObject).StackTrace);
}
}
else if (((Exception)AEventArgs.ExceptionObject is ECachedDataTableLoadingRetryGotCancelledException))
{
if (TLogging.DebugLevel >= TLogging.DEBUGLEVEL_COORDINATED_DB_ACCESS)
{
TLogging.Log(Catalog.GetString(
TLogging.LOG_PREFIX_INFO +
"The OpenPetra Server was too busy to retrieve the data for a Cacheable DataTable and the user cancelled the loading after the retry attempts were exhausted."));
TLogging.Log(((Exception)AEventArgs.ExceptionObject).StackTrace);
}
TServerBusyHelperGui.ShowLoadingOfDataGotCancelledDialog();
}
else if (((Exception)AEventArgs.ExceptionObject is ESecurityAccessDeniedException))
{
if (ProcessSecurityAccessDeniedException != null)
{
ProcessSecurityAccessDeniedException((ESecurityAccessDeniedException)AEventArgs.ExceptionObject, ASender.GetType());
}
else
{
MessageBox.Show(
"Unhandled Thread Exception Handler: encountered ESecurityAccessDeniedException, but Delegate " +
"'ProcessSecurityAccessDeniedException' isn't set up - which is a mistake that needs to be corrected." +
Environment.NewLine +
"Message of the ProcessSecurityAccessDeniedException instance:" + Environment.NewLine +
ProcessSecurityAccessDeniedException.ToString());
}
}
else
{
// MessageBox.Show("UnhandledExceptionHandler Unhandled Exception: \r\n\r\n" +
// ((Exception)(AEventArgs.ExceptionObject)).ToString() + "\r\n\r\n"+
// "IsTerminating: " + AEventArgs.IsTerminating.ToString());
LogException((Exception)AEventArgs.ExceptionObject,
"Reported by UnhandledExceptionHandler: (Application is terminating: " + AEventArgs.IsTerminating.ToString() + ')');
UEDialogue = new TUnhandledExceptionForm();
UEDialogue.NonRecoverable = AEventArgs.IsTerminating;
UEDialogue.TheException = (Exception)AEventArgs.ExceptionObject;
//Would normally use the code below but cannot due to circular referencing.
//Form MainMenuForm = TFormsList.GFormsList.MainMenuForm;
Form MainMenuForm = Application.OpenForms[0]; // This gets the first ever opened Form, which is the Main Menu
// Ensure UEDialogue is shown on the UI Thread!
if (MainMenuForm.InvokeRequired)
{
MainMenuForm.Invoke((MethodInvoker) delegate { UEDialogue.ShowDialog(); });
}
else
{
UEDialogue.ShowDialog();
}
}
}