An Empty data source running from app.

[tanvirtonu]

I have a report which I want to populate with data given from my application not database.I have created and compiled the report with empty data source in Ireport.

But, now I cant run that report from my application.Previously,I could run any .jasper file (with active connection)from the following code

 

Code:

JasperPrint jasperPrint = JasperFillManager.fillReport(reportFileName, map, jdbcConnection);
           JasperViewer.viewReport(jasperPrint,false);

 

Now,what code should I write to run compiled jasper file which has empty data source.

One more thing,if I pass a Map object from my application into report,how can I get the key and value of that map in Ireport/expression editor.Please help me.

[Pedja]

Put "new JREmptyDatasource()" instead of your connection object, and in your report design you have to define all the parameters that you want to use. Then, in your code, you can put something like

parameterMap.put("MY_PARAM", paramValue);

and use the $P{MY_PARAM} to get the value from the map.