subreport within subreport problem

[kgoedert]

Hi,

 

I have a master report which has a subreport which in turn has another subreport.

 

I my master report, I have a list of beans of class A that have a list of beans of class B that are shown in the subreport and beans of class B have a list of beans of class C that should be shown in the subreport's subreport.

 

I can show properties of class' A objects with no problem and the first subreport also has no problem. I pass the properties from the master report to the subreport through a list and everything works just fine.

 

Which doesn't work is passing parameters from the subreport (which shows properties of B objects) to the subreport within it (which should show properties of C objects).

 

In my java code I have this:

Code:

InputStream c = getClass().getClassLoader().getResourceAsStream(ReportManager.REPOSITORY + "c.jasper"«»);
			InputStream b = getClass().getClassLoader().getResourceAsStream(ReportManager.REPOSITORY + "b.jasper"«»);
			InputStream main = getClass().getClassLoader().getResourceAsStream(ReportManager.REPOSITORY + "main.jasper"«»);
			
			param.put("subRelPath", b);
			param.put("subScalePath", c);
			
			try {
				print = JasperFillManager.fillReport(main, param, ds);	
				return JasperExportManager.exportReportToPdf(print);
			} catch (JRException e) {
				e.printStackTrace();
			} 

 

In my main report, in the subreport properties I pass a parameter that represents the collection it should show, and I do the same on this subreport to the subreport within it. And this doesn't work. What is wrong?

 

Why can I pass a collection from the master report to its subreport and it works fine, but it doesn't work when passing from one subreport to a subreport within it?

 

Thanks for any help