/// <summary>
/// Fetches Partner Info data from the Petra Server.
/// </summary>
/// <param name="ADummy">A dummy object (needed because called from the Timer). Pass in null.</param>
private void FetchDataFromServer(object ADummy)
{
TimeSpan Duration;
PartnerInfoTDS PartlyPopulatedPartnerInfoDS = null;
bool ServerCallSuccessful = false;
if (FTimer == null) // prevent execution of this Method if Timer is already disposed!
{
return;
}
if (FLastDataFeched != DateTime.MinValue)
{
Duration = DateTime.Now.Subtract(FLastDataFeched);
}
else
{
Duration = new TimeSpan(0, 0, 0, 0, MINIMUM_SERVERCALL_GAP);
}
// Decide whether to make the call to the PetraServer, or whether to delay it.
if (Duration.TotalMilliseconds < MINIMUM_SERVERCALL_GAP)
{
// TLogging.Log("MINIMUM_SERVERCALL_GAP NOT reached, sleeping " +
// (MINIMUM_SERVERCALL_GAP - Duration.TotalMilliseconds).ToString() + "ms ...");
FTimer.Change(Convert.ToInt32(MINIMUM_SERVERCALL_GAP - Duration.TotalMilliseconds),
System.Threading.Timeout.Infinite);
}
else
{
// we are now in the process of fetching data from the PetraServer!
FFetchingData = true;
FLastDataFeched = DateTime.Now;
// We need to work with an exact copy of FServerCallParams because FServerCallParams
// can be overwritten anytime!
FCurrentServerCallParams = FServerCallParams.GetDeepCopy();
// TLogging.Log("MINIMUM_SERVERCALL_GAP reached, making Server call for Partner " +
// FCurrentServerCallParams.PartnerKey.ToString() + ". FCurrentServerCallParams.PartnerInfoScope: " +
// FCurrentServerCallParams.PartnerInfoScope.ToString("G") + "...");
FServerCallError = String.Empty;
FCurrentServerCallParams.ServerCallOK = false;
// Reset Dictionary
HyperlinkWithValueArguments =
new Dictionary <string, Tuple <TPartnerAttributeTypeValueKind, string>>(1);
try
{
Ict.Common.DB.TServerBusyHelper.CoordinatedAutoRetryCall("Partner Info", ref ServerCallSuccessful,
delegate
{
/*
* Actual PetraServer calls!
*/
if ((FCurrentServerCallParams.PartnerInfoScope == TPartnerInfoScopeEnum.pisPartnerLocationAndRestOnly)
|| (FCurrentServerCallParams.PartnerInfoScope == TPartnerInfoScopeEnum.pisLocationPartnerLocationAndRestOnly))
{
FCurrentServerCallParams.ServerCallOK = TServerLookup.TMPartner.PartnerInfo(FCurrentServerCallParams.PartnerKey,
FCurrentServerCallParams.LocationKey,
FCurrentServerCallParams.PartnerInfoScope,
out FPartnerInfoDS);
ServerCallSuccessful = true;
FPartnerInfoDS.Merge(FPartnerAttributeCategoryDT);
FPartnerInfoDS.Merge(FPartnerAttributeTypeDT);
}
else if (FCurrentServerCallParams.PartnerInfoScope == TPartnerInfoScopeEnum.pisFull)
{
FCurrentServerCallParams.ServerCallOK = TServerLookup.TMPartner.PartnerInfo(FCurrentServerCallParams.PartnerKey,
FCurrentServerCallParams.PartnerInfoScope,
out FPartnerInfoDS);
ServerCallSuccessful = true;
FPartnerInfoDS.Merge(FPartnerAttributeCategoryDT);
FPartnerInfoDS.Merge(FPartnerAttributeTypeDT);
FPartnerClass = SharedTypes.PartnerClassStringToEnum(FPartnerInfoDS.PartnerHeadInfo[0].PartnerClass);
FPartnerShortName = FPartnerInfoDS.PartnerHeadInfo[0].PartnerShortName;
}
else
{
FCurrentServerCallParams.ServerCallOK = TServerLookup.TMPartner.PartnerInfo(FCurrentServerCallParams.PartnerKey,
FCurrentServerCallParams.LocationKey,
FCurrentServerCallParams.PartnerInfoScope,
out PartlyPopulatedPartnerInfoDS);
ServerCallSuccessful = true;
}
});
}
catch (ESecurityPartnerAccessDeniedException Exp)
{
FServerCallError = TMessages.MsgSecurityExceptionString(Exp);
}
catch (Exception Exc)
{
FServerCallError = "An error occured while trying to retrieve data for the Partner.";
TLogging.Log("Partner Info: An error occured while trying to retrieve data for the Partner! Details:\r\n" +
Exc.ToString());
}
if (!ServerCallSuccessful)
{
// ServerCallRetries must be equal to MAX_RETRIES when we get here!
FServerCallError = String.Format(StrPartnerInfoCannotBeShownDueToTooBusyServerText,
Catalog.GetString(" in the Find Result"), Catalog.GetString(" in the Find Result"),
Catalog.GetString("re-run the search operation by pressing 'Search'"));
}
//MessageBox.Show("FCurrentServerCallParams.ServerCallOK: " + FCurrentServerCallParams.ServerCallOK.ToString());
if (FServerCallError == String.Empty)
{
/*
* Find out if the User requested a different Partner/LocationKey combination
* in the meantime. If so, don't update the UI with the currently retrieved data,
* but retrive the data for the new Partner/LocationKey combination and update the
* UI with that!
*/
if (FCurrentServerCallParams.IsIdentical(FServerCallParams))
{
if ((FCurrentServerCallParams.PartnerInfoScope == TPartnerInfoScopeEnum.pisPartnerLocationOnly)
|| (FCurrentServerCallParams.PartnerInfoScope == TPartnerInfoScopeEnum.pisLocationPartnerLocationOnly))
{
FPartnerInfoDS.PLocation.Rows.Clear();
FPartnerInfoDS.PPartnerLocation.Rows.Clear();
FPartnerInfoDS.Merge(PartlyPopulatedPartnerInfoDS);
FPartnerInfoDS.Merge(FPartnerAttributeCategoryDT);
FPartnerInfoDS.Merge(FPartnerAttributeTypeDT);
}
/*
* Update the User Interface with the data that was retrieved from the PetraServer!
*/
UpdateUI();
// we don't fetch data from the PetraServer anymore.
FFetchingData = false;
}
else
{
// TLogging.Log("Newer FServerCallParams available; making new Server call!");
FetchDataFromServer(null);
}
}
else
{
/*
* An Exception occured while making the call to the PetraServer ->
* inform user about that!
*/
UpdateUI();
// we don't fetch data from the PetraServer anymore.
FFetchingData = false;
}
}
}