Home Datapipelines
New Blog Posts: Merging Reports - Part 1 and Part 2

PRoblems with TppJITPipeline

Hello,

I have a fairly specific problem with one of my reports.
In short, the report freezes when I try to display a value from a `TppJITPipeline`, **but only when the report consists of multiple pages**. The report never reaches the end: the **“Close”** button does not appear and remains **“Cancel”**, and clicking it does nothing. I then have to terminate the application using Task Manager.

The `TppJITPipeline` itself is very simple: it contains only **one record** and reads its values from a record. The value itself is displayed correctly in the report, so that does not seem to be the issue.

It makes no difference whether I place the field in the header band or the footer band.
As soon as I add this field, the report is no longer generated completely.

Where should I start looking?

Any help would be greatly appreciated!

kind regards,

Dirk Janssens.

For completeness, below is my TppJITPipeline component (without the fields), and the procedure jitOrderTotalenGetFieldValue :

object jitOrderTotalen: TppJITPipeline
InitialIndex = 0
RecordCount = 1
UserName = 'jitOrderTotalen'
OnCloseDataSet = jitOrderTotalenCloseDataSet
OnGetFieldValue = jitOrderTotalenGetFieldValue
Left = 304
Top = 16
object jitOrderTotalenppField1: TppField
FieldAlias = 'Huur_Dag_Bruto'
FieldName = 'Huur_Dag_Bruto'
FieldLength = 10
DataType = dtDouble
DisplayWidth = 10
Position = 0
end
.......etc...

function TDM_Reportbuilder.jitOrderTotalenGetFieldValue(
aFieldName: string): Variant;
begin

try

if OrderTotalen.DagenInWeek = 0 then
Bepaal_Offertetotalen_Op_Basis_Van_Leveringsgegevens ;

DM_Codesite.csDebug.TraceMethod( Self, 'jitOrderTotalenGetFieldValue', tmoTiming );

DM_Codesite.csDebug.Send( aFieldname);

case jitOrdertotalen.FindField(aFieldName) of

0 : REsult := OrderTotalen.Dagprijs_Bruto ;

//similar for 1..33]

34 : REsult := OrderTotalen.TeVerzekeren_PerDag * 5 ;

else Result := 'onbekend veld: ' + aFieldName ;

end;

except //The exception is never triggered

on E : Exception do
DM_Codesite.csDebug.SendException('Fout in cdsFacturenCalcFields', E );

end;

end;




Comments

  • Hi Dirk,

    Which version of ReportBuilder are you using? If you trace into the OnGetFieldValue event where does it hang? If you simply return a static string value, do you get the same behavior?

    If possible please create a simple example recreating this issue and send it to us so we can research what is happening.
    Best Regards,

    Nico Cizik
    Digital Metaphors
    http://www.digital-metaphors.com
Sign In or Register to comment.