Error with subreports?

[2002 JI Open Discussion]

By: Peter Kohlendorfer - kohlendorfer

Error with subreports?

2003-04-01 06:06

Hi,

 

when using subreports the first row always gets dropped in my subreport. However, when displaying the subreport alone (not embedded) I see all rows.

I am using the following subreport definition:

 

<subreport isUsingCache="true">

<reportElement x="0" y="0" width="802" height="20" isPrintRepeatedValues="false" isPrintWhenDetailOverflows="false" isRemoveLineWhenBlank="true"/>

<dataSourceExpression>

$P{REPORT_DATA_SOURCE}

</dataSourceExpression>

<subreportExpression class="dori.jasper.engine.JasperReport">

$P{SubreportName}

</subreportExpression>

</subreport>

 

Any ideas what could be wrong?

 

Greetings,

 

Peter

 

 

 

 

By: Teodor Danciu - teodord

RE: Error with subreports?

2003-04-01 10:00

 

Hi,

 

You are passing to your subreport the same

data source that the master reports has.

This is not quite usual.

If you are sure it is exactly what you need to do,

note that when generating the subreport, the pointer

in the datasource already points to the row let's say "n" and the first row appearing in the subreport

will be the next, which is "n + 1".

 

If you want the row "n" of the data source to appear

in the subreport, you need a custom data source

that will allow you to reverse the pointer in the data

source with one position, before launching the subreport. You need a way to call something like a "previous" method, contrary to the "next" method

that the engine always calls on the data source object.

 

I hope this helps.

Teodor

 

 

 

 

 

 

By: Peter Kohlendorfer - kohlendorfer

RE: Error with subreports?

2003-04-01 08:13

Hi,

 

I did some additional investigation:

In JRVerticalFiller line 160 the method fillReportStart() is called. For some reason in JRFillBand the flag "isToPrint" is set to false, so for the first row of data the subreport's fields are not evaluated at all and I do not get the subreport.

For subsequent rows the call of fillReportContent() in line 169 works fine and produces all rows as I would expect.

 

Has anybody (Teodor, please help) an idea how this can happen. To me it looks like a bug, but maybe it is some misconfiguration of the subreport. As I mentioned before when I execute the subreport alone all rows including the first one are displayed.

 

Thanks in advance,

 

Peter

 

 

 

 

By: danita perez - danita

RE: Error with subreports?

2003-05-07 10:06

My error is similar, when I call the constructor of JRVerticalFiller it appear it never returns anything, i'm trying to debug the source but now i really don't now what to do. What can be my error:

 

In class JRFiller:

 

public static JasperPrint fillReport(

JasperReport jasperReport,

Map parameters,

JRDataSource dataSource

) throws JRException

{

...

switch (jasperReport.getPrintOrder())

{

case JasperReport.PRINT_ORDER_HORIZONTAL :

{

filler = new JRHorizontalFiller(jasperReport, false);

System.out.println("jrfiller3");

break;

}

case JasperReport.PRINT_ORDER_VERTICAL :

{

System.out.println("jrfiller44");

filler = new JRVerticalFiller(jasperReport, false);

System.out.println("jrfiller4");

break;

}

}

System.out.println("jrfiller5");

return filler.fill(parameters, dataSource);

}

 

 

it seems to never go out of the switch when it calls the JRVerticallFiller method

 

thanks...

 

 

 

 

 

By: Jose Maria Lopez - vchema

RE: Error with subreports?

2003-05-14 02:36

I'm also having this problem. I pass the subreport datasorce as a field of the master report. Displaying the subreport alone works fine but when I do it as a subreport some detail lines are not showed.

 

With different data some times there are a few pages that are not displayed, and some other times the whole detail lines are not displayed. But the data is retrieved properly, even the calculations are done perfectly.

 

I am using version 0.4.6.