Report with subreports, what to deploy

[J_N]

I have report with 2 subreports. I successfully run the report from java code.

 

 

InputStream input=new FileInputStream(new File("MyReport.jrxml"));

JasperDesign design = JRXmlLoader.load(input);

JasperReport report = JasperCompileManager.compileReport(design);

...

 

I found out, that I must deploy main file as .jrxml file and subreports as compiled .jasper files. There's no need having any reference to them from java code.

But could it be possible to have subreports as .jrxml files too? What then java code should look like? Thanks.

[George_A]

I do this thing by parameter.

in main report in subreport section

place:

<parameter name="subReport" class="net.sf.jasperreports.engine.JasperReport">

</parameter>

 

In subreport section: <subreportExpression class="net.sf.jasperreports.engine.JasperReport">

<![CDATA[$P{subReport}]]></subreportExpression>

 

In java code:

InputStream subreportStream = new FileInputStream("subreport.jrxml");

JasperReport subreport = JasperCompileManager.compile(subreportStream);

 

InputStream reportStream = new FileInputStream("report.jrxml");

JasperReport report = JasperCompileManager.compile(reportStream);

 

Map parameterMap = new Hashtable();

table.put("subReport", subreport);

 

JasperPrint print = JasperFillManager(report, parameterMap, getDatabaseConnection());

 

 

This exmaple create by ./jasperreport/samples/demo/subreport

sources.

[J_N]

I did exactly as you said and tried to run thus modified report from iReport, but no subreport was shown. Of course, because subreport is described as $P{subReport} and 'subReport' parameter has no default value. I cannot put there file name as String, because parameter class type is net.sf.jasperreports.engine.JasperReport and not String. So what now? I would like to see both ways working - iReport and Java code too.

Post edited by: J_N, at: 2006/10/17 07:44

[J_N]

I found a better solution - distribute subreports as .jrxml and silmply compile them:

 

JasperCompileManager.compileReportToFile("subreport.jrxml", "subreport.jasper");

 

And last problem would be to find out the complete list of subreports (and subreport's subreports) which the main report contains.

Does exist some java method to extract this info from JasperReport or I must do it by text searching ".jasper" in .jrxml file?