How to return values to master report from subreport?

[Novaa]

Hello Jaspersoft Community,

i cannot return Variables to my Master report. Can somebody help? Or Explain me how to return values.

 

Subreport Variable:

 

 

 

 

 

 

Displayed Content of the Sup Report:

Main Report Variable:

Return Values:

 

Displayed Content in Main Report:

 

 

 

 

 

[lucianc]

If you want to display the returned value in the same band as the subreport, you'll have to set evaluationTime="Band" for the text element that displays the return value.

Regards,

Lucian

[Novaa]

Thanks for your Answer :)

Now i have an other Problem. I want to make an Expression with the Variable that came from the Subreport but my Expressions doesn´t work.

I have used this IF CASES:

$V{Column_number2} != BigDecimal.ZERO

$V{Column_number2} != null

Regards

Novaa

 

[ojvm24]

Hi, I recommend you pass those values as a param to the report, so you must calculate BEFORE calling the report, let´s say you have a list of items, iterate over the list make the sum, and store it in a variable, then add it as a param, "amount", this variable must be added to the report.

BigDecimal total = BigDecimal.ZERO;

for( Item i : items){

   total = total.add( i.amount);

}

 

Map<String, Object> param : new HashMap<>();

param.put("amount", total);

final JasperPrint print = JasperFillManager.fillReport(report, param, source);

 

// Export the report to a PDF file.

JasperExportManager.exportReportToPdfStream(print, out);