Chart in Detail Band

Hi,

 

What you describe is not a bug, but rather a wrong usage of the JRBeanCollectionDataSource.

You have not posted any files so that we could tell you what is wrong with them. Please do, if you want to have your problem fixed.

 

Thank you,

Teodor

 

Hi Teodor,

 

I attached the jrxml file.

I defined a datasource parameter (Chart1Datasource) in the report and I put the code below in the java application. The "datasource" variable is the main datasource of the report (not used by the chart).

 

List dataSource = new ArrayList();

dataSource.add(...);

 

HashMap reportParams = new HashMap();

List chart1Datasource = ...;

reportParams.put("Chart1Datasource", new JRBeanCollectionDataSource(chart1Datasource));

 

URL reportFile = Thread.currentThread().getContextClassLoader().

getResource(jasperBasePath + "Relatorio_analise_resultados.jrxml");

 

JasperPrint print = JasperFillManager.fillReport(reportFile.openStream(), reportParams, new JRBeanCollectionDataSource(dataSource));

return JasperExportManager.exportReportToPdf(print);

 

Thank you

Lúcio Pereira

Hi,

 

Do not pass JRBeanCollectionDataSource instances as parameters, but rather pass the raw Collection object. You'd be wrapping the collection in a data source instance in the .

 

This way a new data source is created every time the chart is run, discarding previous data source instances which have reached the last record.

 

This is the way to do it. There is no point in calling moveFirst. Just create another data source every time.

 

I hope this helps.

Teodor